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Volume 42, Issue 4
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Masahiko HINA, Masahisa INOUE, Hitoshi NAGATSUKA, Tohru TAKAGI, Noriyu ...1993 Volume 42 Issue 4 Pages 659-664
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSIn order to examine the distribution of amelogenin, type IV collagen and fibronectin in tooth germs of rat and human fetus, immunohistochemical studies were carried out. The following antibodies were used: polyclenal antibody against bovine amelogenin, monoclonal antibodies against rat and human type IV collagen and polyclonal antibodies against rat and human fibronectin. Specimens were tooth germs of mandit ular first molar of rats at 1st day after birth and mandibular first incisor of human fetus at 16 to 24 weeks. Immunoreactivity of amelogenin was found from the early stage of secretory ameloblast. Also we found the penetration in predentin and intercellular space of odontoblasts. At the inner enamel epithelium of human fetus, tooth germ was found a scanty immunoreactivity of amelogenin, whereas it was not found in rats. Immunoreactivity of type IV collagen was found in the basement membrane of both tooth germs. After the predentin was secreted at the epithelial-mesenchymal interface, uniform immunoreactivity was founded and when the dentin was produced and the epithelial cells were differentiated into ameloblasts, the immunoreactivity was abundant. Immunoreactivity of fibronectin was found in the basement membrane, mesenchymal cells predentin and mineralized dentin. When the immunoreactivity of type IV collagen was abundant and the penetration of amelogenin was found in predentin, an intense immunoreactivity of fibronectin was found in predentin. These results suggest the possibility that the penetration of amelogenin toward the odontoblasts is related to the mineralization of predentin. In conclusion, these phenomenon was observed in rat and human fetnc tooth germs.View full abstractDownload PDF (5289K) -
Penetration of Antibiotics to Buccal AbscessTakashi YOSHII, Munenori AKAMATSU, Seiko KUWAMOTO, Motonari NISHIO, Ma ...1993 Volume 42 Issue 4 Pages 665-680
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSThe penetration of antibiotics (PIPC, CPZ, CTRX) to the exudate and granulation tissue in caragheenin abscess of rats was examined on day 1 and day 5. The results were as follows:
1. The concentrations of β-lactam antibiotics (PIPC, CPZ, CTRX 20mg/kg, i.v.) of the exudate in caragheenin abscess were lower than serum levels. However, the exudate levels persisted longer than serum. On the other hand, the concentrations of the granulation tissue were almost the same as serum levels after its peak.
2. The difference of the concentration between day 1 and day 5 was not found in the exudate, however, the concentration of the granulation tissue on day 1 was higher than on day 5.
3. There was no difference in Cmax of the exudate and granulation tissue between the three antibiotics. The order of T1/2, Tmax and AUC in the exudate and granulation tissue (PIPC<CPZ<CTRX) was the same as the order of T1/2 in serum.
4. AUC ratio in the exudate (PIPC≅CPZ>CTRX) was in inverse proportion to the protein binding rate (PIPC<CPZ<CTRX) in serum. However, AUC ratio in the granulation tissue showed the opposite relationship to the exudate.
5. From the above results, the penetration of antibiotics to the exudate was not parallel to the antibiotic level of the inflammatory tissue itself. It was recognized that the method of administration should be determined according to serum levels rather than exudate levels, such as pus.
In the latter inflammatory stages, the antibiotic levels did not persist as long as in the early stages. Therefore, it was considered important that the administration given at certain intervals should be performed especially in the latter stage.View full abstractDownload PDF (7527K) -
Orthodontic Forces during Traction of Palatally Impacted CaninesSachio UMEMURA, Tomoaki NEMOTO, Hisae NIWA, Toshio YAMAGUCHI1993 Volume 42 Issue 4 Pages 681-689
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSThe purpose of the present paper was to clarify the ballista spring mechanism. An experimental apparatus was used to measure the orthodontic forces during traction of palatally impacted canines. The following results were found:
1. The length for clinical-use is from minimum 10.65 mm to maximum 24.03mm in perpendicular bending section and from minimum 15.24mm to maximum 22.46mm in horizontal bending section. 2. The load of ballista spring wire is narrow in proportion to its diameter, length of vertical and horizontal bending section, and active angle.
3. Since the active angle of wire became 160° and wire of each diameter exceeded the elastic limit, an adequate upper range in clinical pathology is surmised to be within 140°.
4. 0.014 inch diameter round wire has too weak to use as orthodontic power.
5. Use 0.016 inch diameter round wire if the vertical bending section is within 15mm use.
6. 0.014 inch diameter round wire is best for ballista spring appliance wire.
From the above, a diameter of 0.018 inch round wire is best suited for a ballista spring device, but in case of a short distance from the dental arch to an impacted tooth, it is necessary to get a week force by making the wire size small or by assembling the helical loop to elongate the wire length to the impacted tooth.View full abstractDownload PDF (4254K) -
Part 2: Effect of Eperisone Hydrochloride on the Masseter Blood FlowMasashi SUGISAKI, Hitoshi MURAOKA, Kazuo IOROI, Shigeru SUZUKI, Keiko ...1993 Volume 42 Issue 4 Pages 690-694
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSThe pharmacologic effect of eperisone hydrochloride, having vasodilation actions, on the muscle problems of temporomandibular disorders was unknown. Then we investigated blood flow changes of the masseter muscle in anesthetized rat during pre-and post-injection (i.v.) of eperisone (5mg/kg) by using the laser Doppler flow meter. The following results were obtained.
1. The arterial blood pressure dropped just after injection.
2. The blood flow of the masseter muscle increased just after injection.
3. At ten minutes after injection, shortening the half-time period of post-exercise hyperemia induced by tetanic contraction was observed. The decline of post-exercise blood volume was inhibited.
4. At twenty minutes after injection, shortening the half-time period of post-exercise hyperemia induced by tetanic contraction was observed, too.
These results shmed that the effectiveness of eperisone, having vasodilation actions, on the masseter muscle was available. Eperisone rapidly induced functional vasodilation on the masseter muscle, and brought the post-exercise hyperemia to completion shortly. Furthermore, an inhibitory action on muscle sympathetic nerve activity suppressed the decline of post-exercise blood volume. Then, therapeutic effect of eperisone on muscle problems of temporomandibular disorders suggested to be available with its central-acting muscle relaxant and vasodilation actions.View full abstractDownload PDF (796K) -
Comparative Study of Hardening Materials and Non Hardening MaterialsKimie MORI, Kohsuke OHNO, Masato KUDO, Ken-ichi MICHI, Keiko SHIGENO, ...1993 Volume 42 Issue 4 Pages 695-703
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSSelf-setting apatite bone substitute is calcium phosphate hardening, biocompatible, super formative material. This material is made of a mixture of a-tricalcium phosphate and tetracalcium phosphate as powder, and a solution of 65%, 83%, or 98% deacetylated chitosan in citric acid as liquid. The kneaded material first becomes gum-like, and then hardens in about 8 minutes.
The sample rods were 1.5mm in diameter and 3mm in length. They were implanted in the subcutaneous tissue in the backs of rats.
1) control: sintered hydroxylapatite.
2) samples:
(1) hardening material: mixture of the powder and each solution, implanted after hardening.
(2) non hardening material: mixture of the powder and each solution, implanted before hardening.
Decalcified sections of tissue, taken from the backs at 1, 2, and 4 weeks and 3 months, were stained by hematoxylin and eosin, and evaluated.
The results are summarized as follows.
1) At 1 week postoperative, small round cells (SRC) were very prominent in all materials.
2) At 2 weeks postoperative, SRC were seen less around the control and 98% or 83% deacetylated chitosan hardened materials than around 65% deacetylated chitosan or non-hardened materials.
3) At 4 weeks postoperative, fibrous tissues were seen around all materials but were less prominent around 65% deacetylated chitosan hardened material and 3 types of non-hardening materials.
4) At 3 months postoperative, fibrous tissue was seen around allmaterials, but SRC were also seen, with the fibrous tissue, around non-hardening material.
We concluded that no SRC were seen around the 83% or 98% deacetylated chitosan in citric acid as the liquid for the hardening materials, and this was responsible for the fibrous tissues. SRC was seen around the non-hardening materials for a long time. From these findings, it was concluded that it is desirable to use the highly deacetylated chitosan in citric acid as the liquid for hardening materials, or wait until after the material has hardened for clinical application.View full abstractDownload PDF (11415K) -
Toshiyuki OGASAWARA1993 Volume 42 Issue 4 Pages 704-716
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSThe influence of unilateral occlusal interference on the rat masseter muscle activity was investigated by placing a mesh plate and a CoCr wire on the left side of the second molar of the maxilla. The electromyograms (EMGs) of bilateral masseter muscles were recorded during mastication of hard food pellets before and after interference placement (1day and1, 2, 3, 4, 5, and 6 weeks).
The following results were obtained.
1.The duration of EMG burst showed significant prolongation even1day after placement, and such a prolongation became much more clear after 4 weeks, especially in the interference side.
2.The onset of EMG burst in the interference side preceded invariably that in the intact side.
3.The integration of EMG activity decreased and the duration of the silent period (SP) prolonged in the interference side until3weeks after placement, but both of them tended to return to the preoperation level at5to6weeks after placement.
4.The latency of SP prolonged in both sides after placement, and its time course was similar to that observed in the duration of EMG burst.
These data demonstrated that the unilateral occlusal interference has long-term influences on the masseter EMG activity.It was also suggested that the analysis of the durations of EMG burst and SP could be used to estimate the clinical development of the malocclusion and that the comparison of the integration of EMG activity in each side could identify the affected side.
The present study indicated that the masseter EMG could be a useful clinical examination for diagnosis of the subclinical malocclusion in the temporomandibular joint disorder syndrome.View full abstractDownload PDF (5965K) -
Takashi TACHIMURA, Hisanaga HARA, Takeshi WADA1993 Volume 42 Issue 4 Pages 717-721
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSAnkyloglossia is commonly observed but very little study has been done concerning the real indications for surgical procedures including age and functional disorders. There are often found cases in which a lingual frenulectomy is indicated and performed incorrectly during early infancy on suspicion that short lingual frenulum might cause speech disorders in the future as well as feeding disability.From the speech pathological point of view, however, it is difficult, when patients are under 4years of age, to evaluate how the future speech development will be or to diagnose whether ankyloglossia actually might affect speech sound production. It is often experienced clinically that lingual frenulectomy with a simple cut during early infancy results in much more severe adhesion of tongue to the oral floor, which causes serious articulation disorders.
This report described a case of a7-year-old girl who had been suffering from serious articulation disorders in palatal glides caused by the recurrence of ankyloglossia following incorrect frenulectomy at1month after birth.The tip of the tongue could not protrude over the lower lip nor contact the palate, which resulted in articulation disorders in palatal glides.In this case the surgical separation of ankyloglossia was successfully performed with the improvement of the speech disorder6months postoperatively through speech therapy.The result suggested that more careful recommendation should be required for frenulectomy during early infancy with certain criteria so that it might not result in unexpectedly severe speech disorders caused by readhesion of tongue to the oral floor.View full abstractDownload PDF (7489K) -
Positional Change of the Hyoid Bone in Maximal OpeningToshitaka MUTO, Johji KAWAKAMI, Masaaki KANAZAWA1993 Volume 42 Issue 4 Pages 722-728
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSThe positional change of the hyoid bone between closedand maximal opening position of the mandible was investigated by cephalometric measurements. The following results were obtained.
1. W ith the increase of the mouth opening the hyoid bone moved downward and backward. At maximal mouth opening the head posture changed more posteriorly compared to that of the occluded one.
2. Superimposed on SN plane, it became apparent that hyoid bone was moved downward by maximal opening and backward by the posterior change of the head posture.
3. Significant correlations were found between the degree of rotation of the mandible and posterior or inferior deviation of the hyoid bone at maximal opening.
4. It became evident from these results that the posterior change of the head posture and the inferior movement of the hyoid bone were essential to obtain the maximal mouth opening.View full abstractDownload PDF (802K) -
A Immunohistochemical StudyHiroyo DEGUCHI, Hironori HAMANO, Yoshio HAYASHI1993 Volume 42 Issue 4 Pages 729-734
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSFourteen cases with carcinoma in pleomorphic adenomaand seventeen cases with benign pleomorphic adenoma were examined immunohistochemically for the expression of various oncogene products such as c-erbB-2, c-myc, c-src, and H-ras-P21 using ABCmethod. Incidence in positive immunoreactivity with anti-c-src and anti-H-ras-P21 oncogene product in cases with carcinomas in pleomorphic adenomas was significantly higher than those with pleomorphic adenomas (p<0.001 & P<0.01). Immunohistochemically, these oncogene products were most commonly observed in neoplastic glandular duct-forming cells besides undifferentiated carcinoma cells. These findings indicate that these oncogenes may play significant roles in vivo in the development of malignant transformation towards carcinoma in pleomorphic adenoma of the human salivary glands.View full abstractDownload PDF (6508K) -
Kousuke HONDA, Yutaka TSUDA, Takamasa ARIMOTO, Hiromitsu KISHIMOTO, Ta ...1993 Volume 42 Issue 4 Pages 735-738
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSIt was difficult to find fracture lesion of the maxillo-facial region from ordinary X-ray pictures, because it was composed of many complicated bones. Andit was impossible to take X-ray of patients with whole body injury.
Computed tomography (CT) examination is known as a more useful method for examination of the maxillo-facial fractures. Recently, the new CT machine called SPIRAL CT scan was developed. It had functions for continuous scanning in a short time and aquiring sufficient volume dapa for threedimensional CT reconstruction. We applied the SPIRAL CT scan to examine the cases of extensive and complicated maxillo-facial bone fractures.
As a result, we acquired many useful findings without restraining the patients for a long time and reconstructed three-dimensional images were available for the operation.View full abstractDownload PDF (4469K) -
Yoshikazu SUEI, Minoru FUJITA, Akira TAGUCHI, Takuro WADA1993 Volume 42 Issue 4 Pages 739-744
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSSixty-six patients with mandibular fractures under the age of 15 years were examined concerning number of tooth follicles involved in fractures and their prognosis thereof. One hundred and twenty six teeth were involved in the fractures. Most teeth were canines. This may be due to that a canine follicle occupies a larger area in the mandible and remains longer than other follicles.
In thirty-eight follicles followed up after fractures, sixteen showed abnormalities of tooth formation (abnormal angulat, ion of roots, protuberance on root surfaces, interruption of tooth formation) and disturbance of eruption. These abnormalities were found in corresponding to growing tips of tooth germs (basal area) which were involved in fracture lines. Disturbances of eruption was observed only in an infected case. It was, therefore, suggested that traumatic injuries and infections affecting toothforming tissues were major causes of such abnormalities.View full abstractDownload PDF (7837K) -
Yoshiaki YURA, Hiroki IGA, Yasuo KONDO, Kouji HARADA, Hitoshi TSUJIMOT ...1993 Volume 42 Issue 4 Pages 745-751
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSTwo cases of primary herpes simplex virus type 1 (HSV-1) infection with facial skin lesions and one case with recurrent herpetic lesions in the perioral area were treated by acyclovir ointment in combination with oral or intravenous acyclovir. Acyclovir ointment used in this theraphy was composed of acyclovir, paraffin, vaseline, polyethylene glycol, carboxymethyl cellulose, and sodiumpolyacryl acid. It was found that acyclovir therapy was effective for the treatment of these cases and that acyclovir ointment has no side effect, when applied to the skin lesions. Acyclovir ointment may be useful for the treatment of primary HSV-1 infection and severe recurrent HSV-1 infection if combined with systemic administration of acyclovir.View full abstractDownload PDF (7113K) -
Kunihisa TANIGUCHI, Takeshi HONDA, Kazuhiko OKAMURA, Katsuya KITAMURA1993 Volume 42 Issue 4 Pages 752-756
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSA case of hemangioma in the maxillary sinus is reported in a 53-year-old male patient. FIemangioma occupied the entire left maxillary sinus, and the lower portion conducted the oral cavity directly, accompanying extensive destruction of the maxilla. These clinical findings revealed it to be a malignant lesion. Histopatholegical findings as a hemangioma were mostly obscured due to secondarychanges such as hemorrhage, hematoma formation with insufficient organization, and probably chronicinflammation. In such cases of large hemangioma of the maxillary sinus as this one, the exact perception of the whole lesion is difficult both clinically and pathologically, therefore, complete resection of the tumor with ample surgical procedure will surely promise favcrable prognoses, by stopping progressively expansive tumor growth with destruction of the surrounding tissues and removing a possibly latent malignant lesion.View full abstractDownload PDF (9941K) -
Yoshikazu SUEI, Keiji TANIMOTO, Akira TAGUCHI, Jun YAMADA, Minoru FUJI ...1993 Volume 42 Issue 4 Pages 757-761
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSA statistical study was undertaken for 378 cases of squamous cell carcinoma in the oral and maxillofacial regions.
The number of patients showed neither increase nor decrease during the 1979-91 period.
The most frequent site was the tongue (15.3 %), followed by the lower gingiva (15.3 %), floor of the mouth (13.0 %), upper gingiva (12.4 %), buccal mucosa (9.8 %), oropharynx (8.7 %) and maxillary sinus (6.9 %). The percentage of lip, hard palate, and central carcinoma was less than 2%.
Although upper and lower gingivae were reported as the most frequent sites in past reports, tongue and floor of mouth have increased recently. The anatomical distribution of squamous cell carcinoma in Japan seems to be similar to that in America and Europe. It is supposed that this change might be due to the Westernizing of the life style in Japan.View full abstractDownload PDF (741K) -
Shinko MATSUNAGA, Hiroaki IDEI, Shinkichi IWANARI, Mitsuhiko MATSUMOTO ...1993 Volume 42 Issue 4 Pages 762-768
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSMalignant myoepithelioma is an extremely rare tumor, and is classified as a carcinoma of the salivary glands. A case of low grade malignant myoepithelioma arising in the parotid gland is reported.
The patient was a 44-year-old man who complained of a painless mass in the left parotid region.The tumor with chondromatous consistency was a chicken egg-sized mass and fixed to the surrounding tissues, except for the overlying skin.
A CT scan with medium contrast showed a clearly defined, solitary mass in the region of the left parotid gland. Accumulation of 67Ga and accumulation of 99mTc04- was not found in the tumor. But the tumor continued to grow at a moderate rate.
The clinical diagnosis was a malignant parotid gland tumor, so that CAP therapy was performed, but no regression of the tumor was observed.
At the time of the operation the tumor depressed the ascending branch of the facial nerve and adhered tightly to the periosteum of the mandibular ramus and the mastoid portion of the temporal bone.
Histopathologically the tumor was composed of relatively small cells, spindle, polyhedral, and ovoid in shape. Although solid tumor nests were found, most of the tumor cells proliferated in a solitary pattern. Cellular atypism was seen, and small areas of duct-like structures were also found. Positive reaction for S-100 protein was immunohistochemically observed in the nucleus, as well as in the cytoplasm of the tumor cells. A histopathological diagnosis was made of a low grade malignant myoepithelioma.
The clinical and histopathological features of malignant and low grade malignant myoepithelioma are discussed in 17 previously reported cases.View full abstractDownload PDF (7889K) -
Hideaki SAKASHITA, Masaru MIYATA, Hizuru MIYAMOTO1993 Volume 42 Issue 4 Pages 769-772
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSThe development of subcutaneous emphysema and mediastinal emphysema following tooth extraction is very rare. In Japanese literaturesonly 4 cases were reported. A case of subcutaneous emphysema and mediastinal emphysema caused by the removal of an impacted mandibular third molar with a high-speed air-turbine drill was reported.
A 20-year-old man was referred to our department. His chief complaints were a swelling in the left side of his facebilateral neckand pectoral area and dyspnea. These symptoms occurred several hours after surgical extraction of the mandibular left impacted third molor with a high-speed air-turbine drill under local anesthesia.
Physical examination revealed a swelling with crepitation around the face, neck, and pectoral area. Radiological investigation and CT scan showed a picture of subcutaneous emphysema and mediastinal emphysemafrom the left side of his facebilateral neckand pectoral area.
Because of dyspneaan air way was obtained by means of orotracheal intubation and respiratory conditions were controlled by the respirator and the administration of a muscle relaxant. Since the subcutaneous emphysema and mediastinal emphysema tended to disappearthe tracheal tube was removed on the next day.Since there was a potential for mediastrinitis, antibiotic therapy was conducted.On the 9th daythe mediastinal emphysema disappeared on the CT scan.View full abstractDownload PDF (3039K) -
Hisanori KINJO, Hiroyoshi HIRATSUKA, Hiromitsu NISHIO, Naoto ITO, Mako ...1993 Volume 42 Issue 4 Pages 773-778
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSWe did a clinical study on oral and maxillofacial injuries caused by assault.
The subjects were 63 patients who visited the Department of Oral Surgery, Sapporo Medical College Hospital during a period of five years.
The results were as follows:
1) Of the 63 patients, 85.7 % were aged 10-29 years, with a peak incidence of injuries occurring in the 10-19 years old group.
2) Males constituted 84.1 % of all the patients in the present study. The ratio of male to female was 5.3 to 1.
3) 50.8 % of the patients came to the hospital within 1 day after injuries. Of the 63 patients' injuries, 77.1 % were maxillofacial fractures.
Of the maxillofacial fractures, fracture lines of the mandible showed a very high rate and were seen in 62 lines (87.4 %). In the mandible 37.1 % of the fracture lines were seen in angle area. Wisdom teeth were 95.7 % of the line of the mandible and the extraction of wisdom teeth in the line of angular fractures of the mandible were carrie d out in 81.8 %. 25.4 % of the patients were drunk an alcohol.
4) In the maxillofacial fracture patients, 33 cases were treated by close reduction (67.3 %), while 16 cases were treated by open reduction.View full abstractDownload PDF (723K) -
Yoshinori HADA, Kazuhiko OHSHIMA, Yoshiaki KAYADA, Koji YOSHIGA, Kazua ...1993 Volume 42 Issue 4 Pages 779-783
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSA case of fracture with traumatically wide mandibular defect, respiratory and swallowing disturbances, was treated with reconstructive surgery using an iliac bone graft. A 26-year-old man was hit on the lower jaw by a thick steel wire. He was given emergency treatment at another hospital. After the emergency operation, he had remarkable disturbances of mastication, swallowing, and respiration by aspiration.
On Jan. 12, 1990, reconstructive surgery by free iliac bone graft and hyoid bone suspension were done under general anesthesia. After the operation, he received good profiles. Disturbances of swallowing and mastication improved. Aspiration disappeared. X-ray television of swallowing phase showed remarkable improvement of swallowing movement.View full abstractDownload PDF (5622K) -
Ken ONODERA, Kiyoshi OOYA, Masahiro KUMAGAI1993 Volume 42 Issue 4 Pages 784-786
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSA case of neurilemmoma arising in the mandible of a 42-year-old man is reported. The enucleated tumor showed an encapsulated mass, 24×24×55mm in diameter, containing calcium deposits in the central region. They appeared to relate to the long-term process of this lesion through the degeneration of tumor cells.View full abstractDownload PDF (5667K) -
Kanji MAEDA, Teruyo FUKUDA, Yoshikazu HAYATSU, Fumihiko SHINOZAKI, Shi ...1993 Volume 42 Issue 4 Pages 787-790
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSXanthomonas maltophilia was repeatedly detected from oral cavity wound of a postoperative patient with no infection. In an investigation of microbial contamination of enteral feeding solutions administrated by nasogastric tube to the patient, these solutions were contaminated at a concentration of 105 viable counts/ml of X. maltophilia, suggesting the pseudoinfection was caused by X. maltophilia in the enteral feeding solutions. Contamination seemed to have been caused by frequent reuse of bag-type container and the infusion tube connected to the bag, neither of which can be washed or dried. After abandonment of the reused bag-type container and the infusion tube and introduction of reuse only for 1 day, no further isolation of X. maltophilia from oral cavity wound of the patent was obtained.
Markedly contaminated enteral feeding solution, containing 103-109 gram-negative bacilli per milliliter, has been reported to cause not only diarrhea but also infection such as sepsis. In addition, we clarified that contaminated enteral feeding solution caused pseudoinfection. Attention should be paid to microbial contamination of enteral feeding solution.View full abstractDownload PDF (2137K) -
Michiya NAGANO, Ryohei ADACHI, Masanobu OHNISHI1993 Volume 42 Issue 4 Pages 791-794
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSA case of acute myeloid leukemia with numb chin syndrome as the initial manifestation is reported.
A 21-year-old female complaining of bilateral numbness of the lower lip was referred to our clinic on September 11, 1991. She had noted numbness of the right side of the lower lip two days previously ; numbness extended to the left side on the day before her first visit. On examination, her face was pale, and the body temparature was 36.9°C. Hypesthesia and paresthesia corresponding to the vermilion of the lower lip were noted. Radiographic examination revealed increased radiolucency in the mandibular molar region with a blurred outline of the mandibular canal. An emergency blood cell count was ordered because of possible hematopoietic organ malignancy, and a bone marrow aspirate specimen confirmed the diagnosis of acute myeloid leukemia (FAB classification: M1).
Mental neuropathy should instigate a search for occult malignancy. Symptoms of this neuropathy may develop transiently, and can be the first and only manifestations of an underlying disease.View full abstractDownload PDF (2864K) -
Kazuyoshi OZAWA, Hideyuki TOMII, Yukihiko TAKEDA, Masanori KONDO, Atsu ...1993 Volume 42 Issue 4 Pages 795-801
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSWe encountered a 52-year-old male patient with osteomyelitis of the mandible due to acquired tertiary syphilis. Serological examination revealed the elevation of TPHA at a titer of 1: 2560 or more and STS positives. Treponema pallidum were stained in the biopsy specimen taken from the palatal and lower gingival lesion. Intensive uptake areas were observed in the patient's jaw bone and also other joint areas assessed by bone scintigram. From the diagnostic point of view, we needed to make a distinction from many other diseases, such as rheumatoid arthritis. The patient was treated with AMPC for 3 weeks and with MINO for 4 weeks. But blood serological data did not drop contrary to our expectation, during throughout observation.View full abstractDownload PDF (10022K) -
Histopathological and Histochemical ObservationTsuyoshi HATA, Masaru HOSODA, Michio FUKUDA, Takuya MORIYA, Noriyuki N ...1993 Volume 42 Issue 4 Pages 802-806
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSCalcifying odontogenic cyst, first reported by Gorlin and associates in 1962, is a relatively rare cystic lesion which has the characteristic features of ghost cells and calcified products. We experienced a case of this disease which occurred in the mandibular first premolar area of a 12-yearold boy. Roentgenographic examination revealed a unilocular radiolucency with a demarcated border containing a few radiopaque masses around a crown of an unerupted premolar. He was treated by means of cyst extirpation and guiding the eruption of the unerupted premolar. Now, 2 years and 7 months postoperatively, he is in good health without recurrence and his first premolar is in good dentition with normal function. Because of the immunohistochemical examination using amelogenin, enamelin and cytokeratin, it is postulated that ghost cell may be derived from the ameloblast or the intermedium cell after starting the production of hard tissues and enamel matrix is secreted.View full abstractDownload PDF (9395K) -
Hajime SUNAKAWA, Masahiro YAMASHIRO, Kyoko TSUHAKO, Reiko HATA, Nobuo ...1993 Volume 42 Issue 4 Pages 807-814
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSFifty-five cases with only condylar fracture of the mandible treated at our department from April 1974 to March 1991 were analysed.The obtained results were as follows.
1) Only condylar fracture occurred in 6% of the maxillofacial fractures. Ratio of the male to female was 1.9: 1.
2) 78.2% cases of all patients visited our department within 2 weeks.
3) Fracture position and form were determined according to the classification described by Kubo. Fracture with dislocation occurred most frequently.
4) 54 cases were treated with a conservative therapy. Open reduction was performed in only 1 case.
5) In the results of follow-up examination, 2 cases had restriction of the mouth opening, 14 cases had restriction of sideways movement, 9 cases had pain, and 18 cases had joint sound.
6) As for prognosis, 42 cases showed good prognosis, but 6 cases showed poor.View full abstractDownload PDF (1014K) -
Metastasis to Lateral Lingual Lymph Node Suspected by CT: Report of A Case and Review of LiteraturesYukinori KIMURA, Kenji SEKI, Tomohiro OKANO, Osamu OHSHIMA, Masao NAGU ...1993 Volume 42 Issue 4 Pages 815-820
Published: October 10, 1993
Released on J-STAGE: September 07, 2011
JOURNAL FREE ACCESSFew cases of the metastasis to the lateral lingual node have been reported in literature. A 41-year-old female patient with squamous cell carcinoma of the tongue (T3N2b) was treated by means of interstitial radiotherapy using radium needles followed by radical neck dissection. CT scanning performed four months later postperatively demonstrated a low-density mass with peripheral rim enhancement in the contralateral sublingual space. The mass situated in the lateral part of the genioglossus muscle. Metastatic lymphadenopathy of the lateral lingual node was indicated from these findings.View full abstractDownload PDF (6227K)
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