Japanese Journal of Oral and Maxillofacial Surgery
Online ISSN : 2186-1579
Print ISSN : 0021-5163
ISSN-L : 0021-5163
Volume 35 , Issue 1
Showing 1-32 articles out of 32 articles from the selected issue
  • Atsuo KAETSU
    1989 Volume 35 Issue 1 Pages 1-15
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Demineralized bone matrix were placed as inlay in defects of rabbit mandibula, then periosteum of operation site of one group was abraded and replaced (Group A), and periosteum of another group was abraded and excised (Group B). 1, 2, 3, 4 and 8 weeks after operations, radiographic, histopathologic and CMA findings of two groups were evaluated.
    1. By 1 week, resorption of demineralized bone matrix and beginning of bone repair were observed. There was no difference between Groups A and B.
    2. By 2 weeks, active osteoconduction was observed. Periostial ossification was observed in Group A only.
    3. By 3 weeks, active osteoconduction and good bone repair were observed, but Group A bone repair was more active.
    4. By 4 weeks, all defects were filled with new bone, but new bone of Group A was more compact than Group B.
    5. By 8 weeks, there was no difference between Group A and B. Bone repair and calcifi cation was completed and cortical bone and bone marrow were obseved.
    Defects with periosteum showed quicker repair in first stage, but 8 weeks following there was no difference and good repair was observed in both groups.
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  • MITSUO NISHIDA
    1989 Volume 35 Issue 1 Pages 16-30
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    The postoperative prediction by the paper surgery was made on 36 cases operated by sagittal splitting osteotomy of the mandibular ramus. The new technique was planned and carried out as follows: In the oral cavity, the plaster cast of the mandibular dental arch (after application of a solution of barium sulfate) was positioned against the maxillary dental arch in three dimensions, using the occlusal splint of the model operation as a guide. Under this state, tt lateral head film was taken and the trace of mandibular teeth crowns was positioned, adjusting them to the intermaxillary relationship of teeth crowns on the film. Comparing this modified method with the present method on the amount of aberration of the prediction in all measuring points, the following results were obtained:
    1. Postoperative prediction of each case by the modified method was remarkably correct in comparison with the conventional method, and was statistically significant. In Japan mandibular deformities could be most frequently seen in jaw deformities, and various orthognathic surgeries had be done. This modified method could apply to these operations and was considered to be very useful because of its simplicity.
    2. As the mandibular occlusal plane was rotated on the paper surgery in the frontal plane or the horizontal plane in the range of general clinical cases, the trace of teeth crowns of the mandibular rest position was not in conformity with the trace of teeth crowns of the mandibular model. But exact prediction was gained by this modified method.
    3. The occlusal splint was considered to be significant to many purposes.
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  • MITSUO NISHIDA
    1989 Volume 35 Issue 1 Pages 31-45
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    In this study, morphological changes of skeletal class III craniofaces operated by sagittal splitting osteotomy of the mandibular ramus (male: 30, female: 40) were analyzed. On lateral head vlms, positional changes of the soft tissue and hard tissue were evaluated. On the basis of these results, fiive kinds of methods of postoperative prediction on soft tissue profile were instituted. Which method of prediction was the best was examined with external checks on other samples (male: 16, female: 17) about the amount of aberration of predictions in all measuring points, and the following results were obtained.
    1. Judging totally from the sum of ranking numbers of aberration in all measuring points of mental soft tissue, the following ranking was found among the five kinds of methods.(1) Simple regrcssion linear analysis, (2) average changing rate from sfot tissue to hard tissuc, (3) multiple regression analysis, (4) avcrage positional relationship between soft tissue and hard tissue on the standard of cases normalized by surgical correction (by the author) and (5) average positional relationship between soft tissue and hard tissue on the standard of normal persons.
    The methods based on the amount of positional changes were better than those based on average positional relationship.
    2. Postoperative prediction of the upper lip needs average positional relationship between soft tissue and hard tissue, because few facts are gained from the amount of positional changes of the lower incisors and mental area. The method of average positional relationship on the standard of the cases normalized by surgical correction achieved much closer predictions than the standard method for normal persons.
    3. Against the amount of backward movement of point B, Pogonion, and Menton, the rate of that of their neighboring soft tissues were 98%, 86%, 86% respectively. On the other hand much greater deviation in the rate of vertical movement was observed; therefore clinical application of those data was considered impossible.
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  • Mitsuo NISHIDA
    1989 Volume 35 Issue 1 Pages 46-62
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Two-and three-dimensional postoperative predictions utilizing the computer system were evaluated for exactness from the amount of aberration of the prediction in all measuring points on 36 cases with mandibular deformities operated by sagittal splitting osteotomy of the mandibular ramus. Lateral and frontal head films taken by the method of applying occlusal splints and plaster casts of the mandibular dental arch already explained in the second part were made material in this study. The following result were obtained:
    1. About the prediction of hard tissue, computer graphic prediction of the profile (aberration: average 0.3-1.2mm) was superior to prediction by the conventional paper surgery with statistical significance, though it was a little inferior to that by the modified method (referring to the second part). The prediction of soft tissue was made on the basis of the results of the third part and satisfying results (aberration: average 0.5 mm) were obtained.
    2. In the three-dimensional computer graphic prediction, a little aberration (average: 0.5-1.6mm) of prediction on frontal hard tissue was observed.
    3. The position of point B and Pogonion must be decided also in three-dimensional coordinates about the postoperative prediction of mandibular deformity. It was possible to institute those measuring points on the basis of the results of the first part. In addition, the method of point B plasty on genioectomy was introduced.
    4. Superimposing of frontal head films was considered possible indirectly, utilizing the computer system.
    5. The method of three-dimensional computer graphic prediction seemed to include some problems from multiple points of view.
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  • Yuichiro YAMAMOTO
    1989 Volume 35 Issue 1 Pages 63-79
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Tumor cells taken out of the pleural fluid of a patient with malignant melanoma was established as human gingiva-originated malignant melanoma (HMG) and was subcultured. Amelanotic malignant tumor formed by the transplantation of this HMG in a nude mouse was treated with an experimental chemotherapy with some antitumor agents, leading to antitumor effect both macroscopically and histologically. We recently made an electron microscopic observation of the effects of these agents and using an image analytic apparatus, have examined changes in tumor cells in comparison with the control.
    Drugs used are MPL+TA-077, FT-207, VCR, CDDP, DTIC and PSK singly and MPL+TA-077, MPL+CDDP, MPL+VCR, FT-207+ DTIC, PSK+MPL and PSK+TA-077 in combination. Nude mice were killed for electron microscopic observation 12, 20 and 30 days after administration. Photographs were taken at 3, 000 magnifications, so as to avoid those of the same cell. Using an image analytic apparatus (Kontron MOP modular system) 100 nucleuscontaining tumor cells were determined for cellular and nuclear areas, circumferential length and nuclear irregularity.
    (1) Cellular area: For single administration, tumor cells became larger for CDDP and FT-207 and smaller for MPL, TA-077, VCR and DTIC. For combined administration, tumor cells became larger for MPL+TA-077, MPL+CDDP, MPL+VCR and smaller FT-207+DTIC and for PSK+TA-077.
    (2) Nuclear area: Nucleus became larger for CDDP and FT-207 and smaller for MPL, VCR and DTIC. For combined administration, nucleus became larger for MPL+TA-077 and smaller for PSK + TA-077, respectively.
    (3) Nuclear irregurality: Indentation was strong for MPL, CDDP, FT-207 and MPL+TA-077 and weak for VCR, MPL+ CDDP and PSK +TA-077
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  • Shoji INAGAKI, Nagato NATSUME, Shigeki MIURA, Hiroshi FUJIWARA, Shuich ...
    1989 Volume 35 Issue 1 Pages 80-85
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Wistar Imamichi rats were given a single subcutaneous injection of suspension of dexamethasone from the 9 th day to the 12 th day of gestation. Cleft palates in the fetuses were observed after rats were sacrificed with ether inhalation followed by cervical dislocation at the 20 th day of gestation.
    In the group administered 1. 6 mg of dexamethasone, the incidence of cleft palate was 64. 6% at the 10 th day of gestation. In the group administered 3. 2 mg of dexamethasone, the incidence of cleft palate was 78. 7% at the 11 th day of gestation. They both showed high rates.
    We thought that this method
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  • Hoon CHUNG
    1989 Volume 35 Issue 1 Pages 86-96
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Biochemical studies on synovial fluid in the temporomandibular joint are rather rare when compared with those in the orthopedic field. In the orthopedic, several biochemical studies on synovial fluid have been reported such as the study of the proteins, sugars, enzymes, etc. So the author attempted to analyze synovial fluid in the temporomandibular joint and the data were compared with the clinical symptoms.
    Objects were 10 normal and 60 pathologic samples of temporomandibular joints synovial fluid.
    Synovial fluid was collected from upper joint cavity by pumping 3 times with 2 ml of 2 Xylocaine. Click or pain in the temporomandibular joint area and changes in the maxium interincisal distance before and after cavity pumping were checked and Orbito-ramus, Schüller projection and arthrogram were taken. Collected synovial fluid was centrifuged at 3, 000 rpm for 10 min, and the supernatant was obtained for analysis. Total protein amount, immunoelectrophoresis, SDS-electrophoresis, and calculation of the albumin/globulin (A/G) ratio from the SDS-electrophoretograms were performed. In addition, gel filtration and ion exchange chromatography, amino acid analysis, immunoblotting method were performed for biochemical study. Correlation coefficient between the biochemical results and clinical data was calculated using a statistic analysis program.
    The results were as follows; Average of total protein amounts was 1, 259μg/ml in the pathologic synovial fluid, in contrast to 205μg/ml in the normal. Albumin appeared in normal fluid, but albumin, transferrin and IgG were found in the pathologic fluid by the immunoelectrophoresis. A/G ratio of pathologic synovial fluid was 2. 26 which was close to that of serum (1.2-2.1). A protein of 78 k in molecular weight, which was not found in normal synovial fluid or serum, appeared in pathologic synovial fluid in the SDS-electrophoresis. This 78k protein had a tendency to appear when there were pathologic changes in upper joint cavity.(84%). But in the some cases (16%), this protein did not appear in spite of pathologic changes in upper joint. From the results of clinical examination, those cases without 78k protein had a tendency to have chronic or fixed symptoms. By statistic analysis, correlation coefficient between the appearance of 78 k protein and incidence of disk deformity was 0.58. This result indicated that disk deformity may have some relation to 78 k protein appearance.
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  • Nobuyuki TANAKA, Kuo Jeng HSIEH, Kodo SASAKI, Kensuke NAKANO, Teruo AM ...
    1989 Volume 35 Issue 1 Pages 97-102
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Rare varieties of malignant melanoma occurring in the oral area will be shown in this presentation.
    We observed four cases of malignant melanomas, especially their rough endoplasmic reticulum and melanosomes by transmission electronmicroscopy.
    We examined the relation between the stages of melanosomes and clinical features of malignant melanomas.
    The tumor growth of one case was clinically slow as compared with the other cases, and the electronmicroscopic findings revealed many melanosomes of which stages were high and few rough endoplasmic reticulums.
    The tumor growth of other cases was fast. Their ultrastructures showed many melanosomes of various stages.
    In the case of which the tumor growth was fastest, numerous rough endoplasmic reticulums were shown.
    This study suggest that the growth of the malignant melanomas in which the stages of the melanosomes are high are slow.
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  • Shin TAKAGI, Shunichiro NAGAHATA, Hiraki SADAMORI, Suzuyo ENOMOTO, Aka ...
    1989 Volume 35 Issue 1 Pages 103-110
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Malignant lymphoma occurs frequently in the head and neck region, but rarely in the oral cavity.
    A 73-year old man was referred to our clinic complaining of the right upper jaw trouble. Clinical findings revelated swelling and ulcer on the right molargingiva. X-ray findings showed right upper jaw diffuse resorption. Histopathological examination indicated malignant lymphoma.
    The patient received combination chemotherapy with CHOP and radiotherapy. Tumor disappeared after therapies and there has been no recurrence. So maxillofacial prosthesis: was applicated.
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  • Yoshitaka SHIBATA, Seiji KITAYAMA, Tohru NAGAO, Kazuhiko KONDOU, Tetsu ...
    1989 Volume 35 Issue 1 Pages 111-121
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    OK-432 is generally given muscularly or subcutaneously. But, in the case of the subcutaneous injection, one often cannot help ceasing to inject because of severe local dermal reaction. The local immunity at the intestinum mucosa suggested by Besredka in 1927, was applied to the oral administration. McGhee reported that antigen given perorally stimulates the immuno competent cell at Peyer's nodules. The stimulated immuno competent cell becomes matured by general circulation and reaches the local mucosa of salivary glands and guts etc, and then produces the specific IgA. The eight cases, administered perorally, were followed. Three were tongue, two were mandibul and maxilla and one was floor of the mouth. Six subjects were males, two were females. Radiotherapy was given in all cases, operations in five cases. The usual dose of OK-432 was 5 KE. It was administered for seven consecutive days and during about two months administered every other day, after that once a week or two. The immune reactions of the skin test for Su-PS and PPD were examined before administration and one, two, and four weeks, two and three moths after. At the same time the specific IgA for OK-432 in saliva was also examined. The levels of the s-IgA tended to increase after oral administration. In cases of increasing levels of s-IgA, the reactions of thes kin test for Su-PS were enhanced. This suggested the possibility of the oral administration of OK-432 stimulating general immunity.
    Now, the levels of the s-IgA were correlated with the reactions of the skin test for Su-PS. So we will be able to interpret the general immunity from the reactions of the skin test for Su-PS. The relation between the reactions of the skin test for PPD and the levels of the s-IgA were not defined.
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  • Keigo KUDO, Masaru SHOJI, Kazushige YAMAGUCHI, Mitumasa YOKOTA, Tomoyu ...
    1989 Volume 35 Issue 1 Pages 122-126
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Surgical treatment for recurrent dislocation of the temporomandibular joint with mental disorder or cerebral lesion was carried out in 3 cases. A preauricular incision like a hockey stick which ended in the hair bearing part of the temple was made. In 19-and 22-year old females, a mandibular chip at the sugittal splitting osteotomy for mandibular prognathism and iliac bone were transplanted into the base of zygomatic process of the temporal bone, respectively. On the other hand, in a 73-year old woman, a fragment of the zygomatic arch was pushed out and down toward the articular tubercle by Dautray's technique. Above the two bone grafts and a fragment were fixed by means of intraosseous ligation to the zygomatic arch. There was no recurrent dislocation during a period of 6 to 26 months after surgery.
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  • Yoshinori YOSHIDA, Misao YAMAGUCHI, Mikio OOHASHI, Junichi SHINDO, Sat ...
    1989 Volume 35 Issue 1 Pages 127-133
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    The most common type of malignant pleomorphic adenoma is carconoma in pleomorphic adenoma. However, the other type has sometimes been reported, which reveals malignant changes on both epithelial and stromatous cells. This paper contains a rare case of malignant pleomorphic adenoma.
    A 53-year-old man visited our hospital with complaint of the swelling of the right mandibular region. The tumor was surgically removed under the diagnosis of the malignant tumor of submandibular salivary gland. However it proliferated again and metastasis was found on the nasal septum. The patient died of general-condition exacerabation after 18 months.
    Histologically the tumor consisted of the solid nests of epithelial cells and partially of adenomatoid and squamous cells. Myxomatous or hyalin areas were also seen. Cellular atypia were observed on both epithelial and myxomatous cells.
    Autopsy showed metastasis in the nasal septum and lung and small round cell carcinoma was found in the lung.
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  • Tatsuo TSUJI, Kohsuke SASAKI, Fumihiko SHINOZAKI
    1989 Volume 35 Issue 1 Pages 134-137
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Neuroblastoma is highly malignant tumor in infants and children, and metastasis in the mandible is very rare. A case of neuroblastoma in a 8-month-old boy which metastasized to the mandible is described in this paper with a review of literature.
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  • Hiroomi CHO, Keigo KUDO, Takabumi KOBAYAKAWA, Hiroki MIYATE, Nobuhiro ...
    1989 Volume 35 Issue 1 Pages 138-142
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Clinicopathological results of 4 cases of oral cancers, which recurred after 2 to 7 years following surgery with chemo-and radiotherapy, was retrospectively discussed. In 2 out of 4 patients recurrent tumors appeared in the neighboring site of the primary lesion. In the other 2 patients, multiple tumors were found in the opposite side of the primary lesion. After a period of 3 to 12 years, all cases showed satisfactory clinical courses. The results of the present study suggest that careful surgical excision of various mucosal lesions found after the treatment of oral carcinomas is very important. Especially, precancerous lesions of patients with oral carcinoma have an occasional malignant potential.
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  • Mayumi YAMAGISHI, Yutaka KITAMURA, Tetsuo YAMADA, Akio UEDA, Takehiro ...
    1989 Volume 35 Issue 1 Pages 143-148
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Epidermoid cyst is known to be derived from impaction of the ectoderm during the embryonic period or is acquired from injury or inflammation. It is a relatively rare disease, especially, in the region of the jaw and oral cavity. The majority of cases occur in the floor of the mouth, and occurrence in the lip is very rare. In this report, we presented a case of an epidermoid cyst in the lower lip, and reviewed 21 cases of dermoid cyst and epidermoid cyst in the region of the lip as reported in the Japanese literature.
    The patient, an 18-year-old man, with a chief complaint of swelling in the lower lip was referred by his doctor. He first noted hematoma-like swelling in the right lower lip with no other symptoms about 1 year ago, and purposely bit his lower lip in an effort to reduce the existing swelling. After 1 to 2 weeks, the swelling recurred at the same region, and enlarged gradually. On physical examination, there was a well-defined swelling which was the size of a soybean.
    Under the clinical diagnosis of mucocele, the lesion was surgically enucleated with little difficulty. The removed spherical mass measured 9×8×5mm, and when cut open emitted a yellow-whitish fluid.
    Histopathological study revealed it to be an epidermoid cyst.
    Postoperative healing was uneventful and there is no evidence of recurrence after 2 years.
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  • Kazuhiko NAKAMURA, Kenji HASHIMOTO, Yukou IZUMI, Yoshiaki OHMURA, Koui ...
    1989 Volume 35 Issue 1 Pages 149-154
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    We report a case of hemangioma that originated in cleft lip and the treatment with magnesium (Mg) wires. Mg wires which have no foreign body reaction have been reported as good material for hemangioma treatment. There is no risk of damaging normal tissue and involution of the hemangioma is induced by fibrosis.
    Case report; The patient was born with left unilateral cleft palate and lip and with hemangioma of the cleft lip. For 7 months after cheiloplasty, hemangioma growth continued so it was treated by insertion with Mg wires and packing method. 99.9% pure Mg wires of 0.5mm diameter were used and immersed in 10% acetic acid solution for a few seconds before insertion. Mg wires were inserted 4 times for 3.5 years at the intervals of half a year and more (altogether 35cm lengths). The Mg blood-level and urine-level were checked after operation and found to remain within normal range. After 4 years from the first treatment, hemangioma had gradually disappeared and the contour and the color of the lip was normal. No occurrence of regression yet, but we must follow up the patient and proceed with this treatment in oral and maxillo-facial region selectively and carefully.
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  • Masatoshi OHNISHI, Eiji NAKAYAMA, Kayoko OHTSUKI
    1989 Volume 35 Issue 1 Pages 155-167
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Soft tissue pathology should be appreciated in diagnosing temporomandibular joint (TMJ) disease. For this purpose, contrast arthrography is useful and we also have introduced double-contrast arthrotomography of the TMJ.
    X-ray computed tomography (CT), on the other hand, is well suited to the diagnosis of TMJ disease, because it can clearly delineate both hard and soft tissues. We thus introduce direct sagittal CT of the head with the enhancement of the articular space of the TMJ using negative and positive contrast media and confirmed that this method is very useful for the diagnosis of TMJ disease.
    In this paper we principally investigate the suitability of this double-contrast computed tomography of the TMJ.
    We conclude that double-contrast CT technique is equally or more useful in some cases than single-contrast CT technique in the diagnosis of TMJ disease.
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  • Koichi KATAOKA, Kenji HASHIMOTO, Kenichi TOMITSUKA, Kensuke NAKANO, Sh ...
    1989 Volume 35 Issue 1 Pages 168-173
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Sleep apnea syndrome has been reported by Guilleminault et al. in 1976 and it is a rare condition. The major symptoms of this syndrome are excessive daytime somnolence, sleep apnea and loud snoring.
    Recently, we have experienced one case of microgenia with sleep apnea syndrome. Our present case, a 29-year-old Japanese woman complained of retrogression of the mandible and loud snoring. She was operated on horizontal advancement genioplasty and her symptoms then improved.
    This case suggested that horizontal advancement genioplasty was effective for sleep apnea syndrome, and we considered the result that her upper airway was extended by this operation.
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  • Junichi ISHIMARU, Makoto TOIDA, Norichika TATEMATSU, Nobumitsu OKA
    1989 Volume 35 Issue 1 Pages 174-177
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Vascular leiomyoma is a benign tumor first reported by Stout in 1939. It is frequently observed in the skin, especially in the lower extremities, but seldom in the oral cavity.
    The purpose of this paper is to report a case of vascular leiomyoma arose from the maxillary mucolabial fold in a 38-year-old female. Review of the literature revealed 25 cases in Japan and 68 in other countries reported to date.
    The patients ranged from infancy to 69 years old and sex ratio was 5:2, with a inclination to males. The clinical appearance of vascular leiomyoma was small, painless, and sessile mass, although painful lesion in the lower extremities. Etiology was presumed to be infection, traumatic force or estrogen influences, etc.
    Histopathological examination indicated that this tumor was composed of a tortous mass of blood vesseles between interwinding bundles of smooth muscle.
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  • Susumu TAKEDA, Hiroshi KURITA, Shunichi MINEMURA, Shyuichirou NEBASHI, ...
    1989 Volume 35 Issue 1 Pages 178-182
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    A 80-year-old male patient, diagnosed advanced maxillary sinus carcinoma was treated by multidisciplinary methods which included continous intra-arterial infusion immunochemotherapy with Lentinan, oral administration of 5'-DFUR, radiation and partial maxillary resection.
    He had a good course clinically, histopathologically and immunologically. Seven months after treatment he was free from local recurrence and distant metastasis. However he is still followed up. So, we think that a view of the regional immunocondition will be necessary for the prospective cancer treatment.
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  • Syuichi SATO, Yasuhiko TOMIZAWA, Hiroshi NAGASAKA, Yoshio TAKAHASHI, H ...
    1989 Volume 35 Issue 1 Pages 183-186
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Six cases of bilateral coronoid hyperplasia resulting in limitation of mandibular movement were presented. The positional interrelation between the coronoid process and the zygomatic bone and arch were examined on lateral and posterior-anterior cephalograms.
    The result was that in these cases the tip of the coronoid process was situated higher above the keyridge, closer to the posterior aspect of the zygomatic bone and horizontally nearer to the inner aspect of the zygomatic arch than in the controls.
    Cephalograms were very helpful in examining the anatomic position of the coronoid process.
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  • Yasuharu TAKENOSHITA, Yasufumi HORINOUCHI, Masaie YAMAMOTO, Hiroshi HI ...
    1989 Volume 35 Issue 1 Pages 187-191
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Fracture of the mental spine (genial tubercles, spina mandibularis) is comparatively rare entity of mandibular fracture. It can be assertained only by occlusal radiogram. This type of fracture is considered that normal occlusal stress is a main role, in the severely atrophied edentulous mandible and hypertrophied spines in the denture bearing elders.
    The pathogenesis of this fracture is proposed as one of the stress or spontaneous fractures, like a so-called pathologic fracture. In this sequence, the dental practitioners should keep in mind the possibility of this fracture, especially in denture construction.
    The authors reported three further cases treated conservatively and discussed the mechanism and treatment of this injury.
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  • Yasuharu TAKENOSHITA, Hideichi OHTSUKA, Hideki MIYATANI, Yasufumi HORI ...
    1989 Volume 35 Issue 1 Pages 192-195
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Most congenital lip fistulas are located in the lower lip and are usually associated with cleft lip and palate. The etiology of the fistula is still unknown. However, what seems to be the most likely explanation supported generally is that the origin of the fistula may be related to the presence of lateral sulci on the developing mandibular arch. The fistulous tract extends in the substance of the lip under the mucosa, running towards the labio-gingival inflection ending blindly.
    This paper adds one case with discussion. The authors have excised the entire fistula tract, including the surrounding salivary glands with very satisfactory results and without complication.
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  • Masanori SHINOHARA, Haruki SAZA, Tatsuyuki HAIDA, Hideo TASHIRO, Masui ...
    1989 Volume 35 Issue 1 Pages 196-208
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    The clinical symptoms and criteria for the diagnosis of Sjögren's syndrome were examined.
    According to the criteria by Sjögren's syndrome Committee of the Ministry of Health and Welfare, we examined 113 cases of this disease in our clinic. 92 patients had “definite”, and 21 had “probable” Sjögren's syndrome. 106 patients were female and 7 were male. In clinical classification of Sjögren's syndrome, 50 cases belonged to Group I, 43 cases to Group II, 20 cases to Group III. We examined clinical history, clinical symptoms, salivary secretion rate, tear flow rate, sialogrophy, histological finding of the labial salivary gland and serum auto-antibodies of the patients of Sjögren's syndrome.
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  • Hideki MIYATANI, Yasuharu TAKENOSHITA, Yuji SAKOTA, Hiroyuki ISHII, Ya ...
    1989 Volume 35 Issue 1 Pages 209-216
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Multiple primary cancer was first reported by Billroth in 1889. Since then the number of these cases reported had increased year by year, but only a few oral multiple cancers were reported.
    We treated two cases of oral multiple cancer. Case 1 was a 61 year old male and a synchronous case. He had two lesions of the right edge of the tongue (T3 NO MO) and the left retromolar region (T2 NO MO). Their histological types were both squamous cell carcinomas. The tumor of the retromolar region was excised under general anesthesia and that of the tongue was irradiated by Ra needle after radio-chemotherapy. Case 2 was a 72 year old female and a metachronous case. She had first squamous cell carcinoma of the right buccal mucosa (T2 NO MO) and radiochemotherapy followed by excision of the tumor under local anesthesia. But 3 months later, metastasis appeared in the right submandibular lymphnode and she was received radical neck dissection. Twenty-seven months later after discharge, she had S.C.C.of the right gingiva of upper molar region (T3 NO MO) and that was excised under general anesthesia. No recurrence was seen in either case at present.
    In addition we reviewed the Japanese literature and found the occurrence was 31 of 2049 cases and 1. 51% in Japan. There were 13 cases of oral multiple cancer that were described in detail and included our 2 cases. Ten of 13 cases were male and average age was 53.8 years in male, 66. 3 years in female. Thirteen lesions (48%) appeared in the most popular site the tongue.
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  • Minoru WAKAMORI, Yoshiharu KAWANO, Tomoyuki ISHII, Kanji KURIYAMA, Hid ...
    1989 Volume 35 Issue 1 Pages 217-220
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Intramuscular hemangiomas of the head and neck region occur in approximately 10% of all intramuscular hemangiomas. Erectile hemangiomas in the masseter are characterized by exhibiting the swelling not at the rest of the mandible, but at the biting.
    We have observed two erectile hemangiomas. The first case was a 27 year old female and the second was a 35 year old female. We extirpated the tumors in the first case from the extraoral and in the second from the intraoral. In the second case the size of the tumor reduced within 5 years of follow-up, and we experienced difficulty of recognition of the hemangioma in the operation. In general, venous hemangiomas don't reduce in size but in the second case we made a diagnosis of a venous hemangioma.
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  • Tetsuji KAWAGUCHI, Shigetoshi SHIODA, Shigetoshi YOKOYA, Kazuhiko NAKA ...
    1989 Volume 35 Issue 1 Pages 221-230
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Warthin's tumor, also in appropriately called adenolymphoma is a comparatively rare epithelial benign tumor of the salivary glands, particulary most frequency in the region of the parotid gland.
    This paper described a rare case of Warthin's tumor in bilateral parotid regions in a 65 year-old man who complained of swelling of bilateral parotid regions in our clinic.
    The masses of both sides were well-defined, movable, resilient in consistency and not adherent to the surrounding tissues.
    Computed-tomography, sialo-schintigraphy and ultrasonic-tomography revealed masses in bilateral parotid regions.
    Clinical diagnosis was a Warthin's tumor in bilateral parotid regions.
    The tumor was surgically removed and encapsulated by a fibrous connective tissue. Right tumor was 45×20×15mm and left was 30×20×20mm.
    Microscopically, the tumor was composed of epithelial and lymphoid elements projecting into cystic spaces. The epithelium consisted of cells arranged in double layers, the inner layer composed of tall columnar cells with acidophilic cytoplasm and the outer layer was composed of cuboidal cells. The lymphoid tissue had a germinal center.
    Histopathologic diagnosis was Warthin's tumor.
    Additionally, electrical-microscopic observations were done.
    There was no recurrence at about 3 years after operation.
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  • Syoji INAGAKI, Yoshiyuki NAGANAWA, Masaki KATO, Shuichi SUGIMOTO
    1989 Volume 35 Issue 1 Pages 231-235
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Sialolithiasis in an infant is rare.
    We have recently experienced a case of sialolithiasis in a three year old boy. The case had no subjective symptons and was chanced upon by his mother. We removed two sialolithiasis in the duct of submandibular gland under local anesthesia and nitrous oxide inhalation sedation. The prognosis is fairly good after surgical treatment and there is no reccurrence after one and half years.
    In a review of literature of Japan, this was one of the youngest cases which we were able to find.
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  • Katsuaki MIYAKI, Hisasi ADACHI, Yoshiki HIDAKA, Mitsuo NISHIDA, Yasuhi ...
    1989 Volume 35 Issue 1 Pages 236-241
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Clinical evaluation and effectiveness of the preprosthetic surgery are retrospectively studied based upon operative experiences on 111 cases at the authors' clinics during the past 10 years.
    The results are as follows:
    1. The number of patients showed a tendency to increase every year, the ratio between male and female was 1:1.6, and the age ranged from 30 to 80 years with an average of 64.1 years of age.
    2. Most cases were diagnosed as alveolar atrophy of the mandible and the surgical procedure was mostly lowering the floor of the mouth and vestibuloplasty with skin grafting.
    3. Selective cases of total alveolar plasty were successfuly done followed by ridge augmentation with hydroxylapatite.
    4. Postoperative questionaire revealed that about 92% of patients were satisfied with the surgical result.
    5. The importance of selection of surgical procedures and proper postoperative prosthetic care are emphasized.
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  • Yoshihiko YOKOE, Hisashi ADACHI, Masahiro NOSE, Hideki MATSUI, Masazum ...
    1989 Volume 35 Issue 1 Pages 242-248
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    A histological classification and grading of malignancy was evaluated on the initial biopsy specimens from 38 patients with squamous cell carcinoma of the lower gum in the Department of Oral and Maxillofacial Surgery at Kyoto University Hospital during the past 20 years.
    Malignancy points were investigated by means of Willén's method and the materials were classified into three groups; low malignant group (<14), moderate malignant group (14≤, ≤16) and high malignant group (16<).
    The low malignant group patients showed a cumulative five years survival rate of 41.3%, on the other hand, lower survival rate was found in the high malignant group, with a cumulative five years survival rate of 22.2%.
    This study suggested the positive relationship between a histological grading of malignancy and the clinical course in gingival cancer patient.
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  • Nagahisa FUJIMURA, Masatoshi WATANABE, Hideaki NAGURA, Shoji ENOMOTO, ...
    1989 Volume 35 Issue 1 Pages 249-257
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Thirteen cases of branchial cysts were investigated clinically and histopathologically.
    The mean age was 30.2 years and the highest incidence was recognized in the second and third decades. The sex distribution showed female predominance. The upper and middle neck were the more common sites, but 3 cases in parotid gland and one in submental region were also found. The chief complaint was painless swelling. Most cases were rather easily diagnosed clinically, but the cases of parotid gland tended to be diagnosed as benign tumors. Extirpations or superficial parotidectomies were performed and neither reccurrences nor complications were observed during postoperative period. The size of the cysts was 60mm×40mm in the largest case and 20mm×15mm in the smallest. One cyst had two daughter cysts. The contents were mostly either mucous, muddy or creamy, but those of 3 cases were serous, 2 of which occurred in parotid gland. The biochemical analysis of conten revealed high activity of amylase and especially the salivary type of amylase isozyme in some cases.
    Histopathologically the following findings were obtained. The epithelium of all the cysts of neck was of stratified squamous cell type. Cuboidal cell type was found in 2 of three cases occurring in parotid gland. The lymphnoid tissue beneath the epithelium was varied in both quality and quantity. The salivary tissue was found beneath the epithelium in all three cases of parotid gland. One case had the histological characteristics of both dermoid cyst and lymphoepithelial cyst.
    Consequently the variety of clinical and histopathological characteristics as described above suggested the possibility of the multiple origins of branchial cyst.
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  • Mikio KUSAMA, Masaru HORIKOSHI, Toyoko KISHI, Toaki ONO, Takashi FUJIB ...
    1989 Volume 35 Issue 1 Pages 258-264
    Published: January 20, 1989
    Released: July 25, 2011
    JOURNALS FREE ACCESS
    Thirty patients of squamous cell carcinoma on the lower alveolus and gingiva were treated by surgical management for initial treatment during a 6 year period. Twenty seven patients received segmental resection of the mandible and 3 patients received hemimandibulectomy. No patient received marginal resection of the mandible.
    Recurrence on primary lesion, metastases of the neck or distant metastases were found in 8 out of 30 patients. Two out of 8 patients had recurrence on primary sites and neck region. One out of 8 patients showed recurrence on primary site and distant metastasis. Three out of 8 patients had distant metastases. Four out of 29 patients who received curative operation had recurrence on primary region in soft tissue adjacent to surgical margins. Three out of 4 patients were at T2 stage. Five patients with cervical metastases of N3 stage developed subseqently recurrence of primary region, cervical metastases or distant metastases.
    The comparatively low recurrence rate for segmental resection of mandible found in this series suggest that our treatment planning with neck dissection should be considered as the initial form of therapy except for patients at T1NO stage.
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