Japanese Journal of Oral and Maxillofacial Surgery
Online ISSN : 2186-1579
Print ISSN : 0021-5163
ISSN-L : 0021-5163
Volume 36 , Issue 6
Showing 1-22 articles out of 22 articles from the selected issue
  • Masashi SHIMAHARA, Katumi ONO, Osamu OHSHIMA
    1990 Volume 36 Issue 6 Pages 1407-1416
    Published: June 20, 1990
    Released: July 25, 2011
    In an attempt to investigate whatever changes might occur to mandibular head, mandibular fossa, superior and inferior articular cavity and articular disc under normal mandibular movement without intermaxillary fixation, conformational changes such as mutilation and shortening of the mandibular process were experimentally prepared in rats and histological observations were made employing the H-E staining method until the postoperative 3rd month. The results are as follows:
    1) The mandibular fossa and articular disc showed the most marked changes. The superior articular cavity and mandibular head showed less marked changes. The inferior articular cavity showed the least change.
    2) Generally, proliferative changes such as tylosis of the fibrous layer of the mandibular fossa, proliferation of the connective tissue of the articular cavity, tylosis of both the articular disc and the fibrous layer of the articular cartilage of the mandibular head were the major findings.
    3) In the mandibular fossa, tylosis of the fibrous layer, morphological assymetrization and emergence of cells in the fibrous layer were the major changes noted. The shape itself tended to recover its regularity with the passage of time.
    4) In the superior articular cavity, proliferation of fibrous connective tissue as well as granules cohering within the connective tissue structure were observed. The fibrous connective tissue diminished with the passage of time. Over the same time, the shape of the cohering granules first became irregular, then took on a tonguelike shape.
    5) The major change observed in the articular disc was tylosis. In the initial stage, blood vessels emerged, so the outer layer of the disc appeared heterogeneous. However with the passage of time the emergence of vessels ceased and the outer layer became homogeneous.
    6) In the inferior articular cavity, shrinking of the cavity was observed, and a few cohering granules were seen. In the initial stage this site showed the least change.
    7) In the mandibular head, tylosis of the fibrous perichondral layer was observed throughout the observation period.
    8) In general all of the locations tended to return to their normal shape with the passage of time, with some actually regaining close to normal shape by the postoperative 3rd month.
    9) No specific changes were observed in the joint of the unaffected side.
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  • Yoshio AKIYAMA
    1990 Volume 36 Issue 6 Pages 1417-1429
    Published: June 20, 1990
    Released: July 25, 2011
    The author did experimental zymohystochemical studies on the developmental stages (from immediately after birth to 180 days) of rabbit's orbicularis oris muscles to determine the optimal time for cleft lip and palate operation.
    The results were as follows:
    1. The activity of lactate dehydrogenase was high for 30 days after birth, but it had no differential activities for the developmental stages as the marker.
    2. Orbicularis oris muscle fibers showed both dark and light glyceraldehydc-3-phosphate dehydrogenase staining for 60 days after birth.
    3. When lip plasty was done after differentiation of orbicularis oris muscle, it seems that the appropriate stage for the lip plasty is later than 60 days after birth in rabbits, and later than one year and 4 months after birth in humans.
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  • Jun SHIMADA, Akihiko FURUYA, Hiroshi TAKESHIMA, Kouichiro NAGAMINE, Mi ...
    1990 Volume 36 Issue 6 Pages 1430-1437
    Published: June 20, 1990
    Released: July 25, 2011
    Sagittal splitting ramus osteotomy is a well established method to correct mandibular deformity. However, there still remain some difficulties to accomplish it without any complications because it has a possibility of accidental fracture of mandibular ramus and injury to mandibular canal. Several modifications of technique are reported to reduce these complications.
    However, the most important thing in ensurring the safety of this operation is having through knowledge about the anatomical and morphological conditions of mandibular ramus.
    In this report we examined fifteen dried human mandibles and computed tomographies taken from twelve patients who underwent sagittal splitting osteotomy in our department to detect the anatomical properties of mandibular ramus. The following results were obtained:
    1) The postero-anterior position of mandibular canal was different at the mandibular angle region, where the canal was situated more anteriorly than at mandibular body or mandibular foramen region.
    2) The bucco-lingual position of mandibular canal was different between the body region and angle region; at the former, all canals lay in lingual portion, at the latter 23% of canals lay just beneath the buccal cortical bone.
    3) The thickness of cortical bone was thinnest at the posterior half portion of mandibular ramus. The same results were obtained concerning the bucco-lingual thickness of ramus.
    4) There was no difference between the antero-posterior width of ramus between mandibular protrusion group and normal occlusion group.
    5) The mean angle between the sagittal plane and the postero-anterior axis of ramus was 10.9 degrees.
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  • Yukihiro TATEMOTO, Jyusui HIROTA, Tokio OSAKI
    1990 Volume 36 Issue 6 Pages 1438-1444
    Published: June 20, 1990
    Released: July 25, 2011
    Epidermal growth factor receptor (EGF-R) expression was immunohistochemically investigated on biopsied materials of non-treated 28 oral leukoplakias and 62 oral squamous cell carcinomas (SCC). In leukoplakias (histopathologically graded to I-IV), the stainability was evaluated on the diseased portion and its neighboring healthy epithelium, and in SCC comparative evaluation of EGF-R stainability was performed on three portions of the sections, i. e. healthy epithelium, intermediately neighboring epithelium (atypical/hyperplastic/in situ carcinoma) and invasive region. Epithelia of healthy portions were reacted with the antibody in about 60% of the sections, and both basal and lower spinous layer cells were more intensively stained. EGF-R stainability did not increase in pathological region of OLP, and no difference of staining intensity between healthy and pathologic portion, and also among grade I-IV, could be found. In SCC, no clear different staining could be obtained among three portions. These results may indicate that increase of the receptor on cancer or hyper/dysplastic cells, if it occurs, might be insufficient to exhibit increasement of the immunostainability. Lymphnode metastasis was, however not so strict, statistically significantly correlated with the staining intensity, but EGF-R stainability did not related with cellular differentiation or atypia.
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  • Hiroaki YOSHIDA, Liang-Hornq CHEN, Yoshihiko YOKOE, Yoshinobu SAGAMI, ...
    1990 Volume 36 Issue 6 Pages 1445-1450
    Published: June 20, 1990
    Released: July 25, 2011
    34 patients with malignant salivary gland tumors were retrospectively studied. All patients were treated in the Department of Oral and Maxillofacial Surgery, Kyoto University Hospital during 16 years from 1973 to 1988. Malignant minor salivary gland tumors were about twice as frequent as malignant major salivary gland tumors.
    About twice as many female patients as male.
    In 34 cases, 17 (50%) were pathologically diagnosed as adenocystic carcinoma. More than 90% of cases were treated surgically. The five year survival rate of the 34 patients was 75.9%
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  • Kiyohito YAMAZAKI, Shinji SHIMAZU, Nobuhiro IGATA, Seiji OHTSUBO, Masa ...
    1990 Volume 36 Issue 6 Pages 1451-1454
    Published: June 20, 1990
    Released: July 25, 2011
    Pleomorphic adenoma is found in high incidence among various types of tumors in the salivary gland, however, occurrance in the sublingual gland is extremely rare.
    We report a case of pleomorphic adenoma originated from the sublingual gland.
    The patient, 24 year old female, complained of swelling in her right sublingual region.
    Under general anesthesia the tumor was resected with the clinical diagnosis of sublingual gland tumor.
    The histopathological findings revealed typical pleomorphic adenoma features.
    The patient had no evidence of recurrence at three years and 2 months follow-up after operation.
    Sublingual gland pleomorphic adenoma is very rare, and we report of a few remarks and some literature connected with this case.
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  • Kazuhiko OKUMURA, Tetsuro YAMASHITA, Yukio AKIYAMA, Masaaki KANAZAWA, ...
    1990 Volume 36 Issue 6 Pages 1455-1461
    Published: June 20, 1990
    Released: September 13, 2011
    Plummer-Vinson syndrome (PVS) has been known as one of the pre-cancerous conditions, especially because PVS patients have atropic mucous membrane that is excessive irritable.
    Recently, we experienced a case of PVS with three cancerous lesions in the oral cavity. The patient was a 57 year old female whose chief complaint was the swelling of right upper lip. In addition, she had a twenty years history of dysphagia.
    The oral cancerous lesions consisted of a thumb tip size tumor of the right upper lip mucosa, the same size tumor of the right cheek mucosa and a red bean size tumor of the right retromolar pad mucosa. Histopathologically, all of them were squamous cell carcinomas. A right submandibular lymph node was elongated.
    Another clinical findings were a red smooth tongue, fissuring at the commisures of lipand spoon-shaped nails. Laboratory findings revealed a typical iron deficiency anaemia. On barium swallow examination, esophageal web was recognized.
    The patient was treated by oral administration of iron therapy and the transfusion of concentrated red cells for the anaemia. The oral cancerous lesions were excised surgically after the preoperative radiation.
    There is no sign of recurrences of the oral lesions for one and a half years after surgery.
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  • Hironori YOSHIDA, Kazuo RYOKE, Akihito MICHITA, Takaaki OGAWA, Takeshi ...
    1990 Volume 36 Issue 6 Pages 1462-1468
    Published: June 20, 1990
    Released: July 25, 2011
    This paper described an usefullness of RI-angiography in diagnosis of aneurysmal bone cyst, an extremely rare nonodontgenic disease occurring in the jaws. A 14-year-old boy visited our clinic, complaing of swelling of the left side of mandible. Intraoral examination revealed buccal and lingual bone expansion of the lower left molar region. Radiographs revealed a multilocular radiolucent area on the mandible left side. A clinical diagnosis of ameloblastoma was suspected under these findings. We experienced pulsatory bleeding from the lesion during biopsy.
    We suspected an angiomatous lesion and performed ultrasonic examination, CT scaning and angiography. The results revealed that there was little possibility of angiomatous lesion, so that we again tried a biopsy and the specimen indicated a diagnosis of cavernous hemangioma. Furthermore we performed RI-angiography to asses the vascularity of the lesion, but the pattern of cavernous hemangioma was not demonstrated. Aneurysmal bone cyst was strongly suspected by RI-angiographic in addition to clinical, roentographic and angiographic findings. Under general anesthesia, all cystic tissue was removed from the cavity by careful curettage intraorally. Histopathologically, the lesion consisted of a fibrous connective tissue stroma containing numerous capillaries. In some region, osteoid formations were seen and a few giant cells were present.
    The lesion was finally diagnosed as aneurysmal bone cyst. The agreement with the RIangiography finding and the histopathological diagnosis suggested that RI-angiography examination was effective for diagnosis of aneurysmal bone cyst.
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  • Masazumi MIYAZAWA, Masashi SAKAGAMI, Miyuki AZUMA, YUZO TAKAHASHI, Sho ...
    1990 Volume 36 Issue 6 Pages 1469-1477
    Published: June 20, 1990
    Released: July 25, 2011
    A case of one-stage free rectus abdominis myocutaneous flap was reported. The patient was a 68 year old male with a very small primary cancer lesion in the right molar region of the mandible.
    However, the X-ray films at first visit (30-9-1988) showed abnormal figure.
    He was clinically diagnosed as mandibular cancer (T3N0M0). He had taken radiotherapy of Linac 2, 000 rads from June 13th to June 24th before operation.
    In as much as cervical lymph node metastasis was absent, we decided to operate on the mandibular cancer lesion.
    We used a free rectus abdominis myocutaneous flap to replace the loss of the mandible and the mouth floor.
    The mouth floor and the mandible were resected continuously at the 8-3 portion (and the mouth floor) and an upper neck dissection was performed.
    An A-O plate and a free abdominis myocutaneous flap was put in place in the mouth to close the defect.
    The flap was revascularized by anastomosing the inferior epigastric artery and vein to the facial vessels. The flap being well revascularized, no functionary morbidities occurred after its replacement. A denture was constructed after 6 months. The prognosis for this case is satisfactory. The main characteristics of this flap are as follows:
    (1) The flap is very easily and quickly elevated with the patient in a supine position.
    (2) In many cases flap elevation and oral cancer surgery can be performed simultaneously, thereby reducing operating time.
    (3) There are very few anatomical variations in the deep inferior epigastric vessels.
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  • Souichiro ASANAMI, Michitaka SAITO, Kimio UCHIYAMA, Hideyuki SHIBA, Sh ...
    1990 Volume 36 Issue 6 Pages 1478-1482
    Published: June 20, 1990
    Released: July 25, 2011
    Recently, measuring the quality of life in cancer patients besides cure and survival has become increasingly important in medical treatment. Therefore, effect of immunochemotherapy on performance status (PS), PHA blastgenesis, and linear analogue self-assessment QOL has been studied in patients with oral cancer. Results are summarized as follows:
    1. QOL scores of patients were correlated with PS observed by physicians.
    2. QOL scores and PHA blastgenesis were increased in regressive status and decreased in progressive status.
    In our further studies, we should find that medical treatment maintained high QOL of patients with advanced oral cancer.
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  • Atsushi NIIMI, Yasunori SUMI, Toshio KANEDA, Ryouji MABUCHI
    1990 Volume 36 Issue 6 Pages 1483-1488
    Published: June 20, 1990
    Released: July 25, 2011
    We experienced two cases of cleidocranial dysostosis, which is characterized by defect of clavicle, skull deformities, dental abnormalities and hereditary. However, several cases had no hereditary in the past reports. Likewise, in our cases, one patient had a family history that was suspected of hereditary but the other patient had no particular family history.
    When family history is suspected, we have to examine the family, especially young family of the patient, because we then can select the appropriate therapy for dental abnormalities by early diagnosis. In this report, we discuss the therapy for dental abnormalities in view of early diagnosis.
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  • Makoto FUJISAKI, Hiroshi MUKAI, Yuuiti TOMORI, Sukehide YAMASHITA
    1990 Volume 36 Issue 6 Pages 1489-1497
    Published: June 20, 1990
    Released: July 25, 2011
    We reported two cases of Peutz-Jeghers syndrome whose chief complaints were medical examination of the pigmented spots on the lips, palms and soles.
    Case 1: 44 years old man. He had an oldest son (10 years old) and oldest daughter (7 years old) who both had pigmented spots on the lips. At the age of 5 to 6 years, he had noted pigmented spots on the lips. At the age of 42 years, he was admitted to the Kagoshima University Hospital because of an attack of abdominal pain and the diagnosis of Peutz-Jeghers syndrome was made. After he had undergone transverse mesocolone partial excision and polypectomy, he was referred to our clinic.
    Case 2: 22 years old woman. Her mother, diagnosed as Peutz-Jeghers syndrome, died of uterus carcinoma at the age of 38 years. At birth, pigmented spots on the lips were noticed and a small intestinal polyp was found at the age of 19 years. After she was diagnosed as Peutz-Jeghers syndrome, she visited our clinic because of the pigmented spots on the lips and a buccal mucosa.
    Both cases 1 and 2 had black or dark brown, comparatively clearly bordered spots, 1 to 5mm in diameter, on upper and lower lips, buccal mucosa, palms and soles.
    Roentgen examination revealed multiple polyps in colon sigmoideum and the rectum in case 1 and in case 2 a sporadical polyps in the ventriculus, the intestinum tenne and the colon transversum.
    The characteristic histopathological findings were epithelial cells proliferation and prominent branching of the lamina muscularis mucosa. In case 2, much melanin pigmentation was mostly observed in the basal cells of the labial mucosa.
    The prognosis was not eventful in both cases.
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  • Yoshinori HIGUCHI, Norifumi NAKAMURA, Munehisa ADACHI, Hideo TASHIRO, ...
    1990 Volume 36 Issue 6 Pages 1498-1505
    Published: June 20, 1990
    Released: July 25, 2011
    Fifty-four cases of odontoma were studied radiologically, Of these, 42cases (29 compound and 13 complex types were) studied histopathologically with special emphasis on the growing process.
    Radiologically, odontoma was surrounded by a thin radiolucent space, but in 2 cases in which this radiolucent space had widenend, a tumorous growth was histologically observed in the capsule.
    In the parenchyme, proliferation of odontogenic epitheliums and ghost cells were observed. Among those cells, dysplastic enamel, dysplastic dentin and osteoid were produced. Those findings suggested inner growth of the tumor.
    Concerning the capsule, odontogenic epitheliums and dental hard tissues were scattered in some cases. In two cases of the thickened capsule, many developmental processes to odontoma were observed. Those findings suggested outer growth of the tumor.
    After completion of contouring of the tumor, odontoma had the tendency to proceed to the inner growth, but it almost stopped the outward growth.
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  • Nagahisa FUJIMURA, Yasuhiro OKADA, Jangwoo CHOI, Masazumi MIYAZAWA, Hi ...
    1990 Volume 36 Issue 6 Pages 1506-1518
    Published: June 20, 1990
    Released: July 25, 2011
    The first and second branchial arch syndrome is a rare anomaly characterized by hypoplasia of mandibular ramus, temporomandibular joint and ear. The hypoplasia involving both skeletal and soft tissues results in severe facial asymmetry increasing progressively. The present paper reports a case of this anomaly.
    A 28 year-old female was admitted. Clinical examination showed hypoplasia of the middle and lower thirds of the left side of the face, canted mouth and malformed ear. Chin was significantly deviated to the left and retropositioned. Radiographic and CT examinations revealed hypoplasia of left mandibular ramus and angle, coronoid process, temporomandibular joint, muscles of mastication and parotid salivary gland. Intraoral evaluation showed canted occlusal plane with rigid interdigitation of occlusion. Both anteroposterior and lateral cephalometric analyses disclosed three-dimensional hypoplasia and deviation of the upper and lower jaws: that is, upward and posteromedial displacement of the affected malar bone and maxilla, upward and medial displacement of the affected temporomandibular joint, mandibular ramus and angle, deviation to the affected side and retroposition of the chin and the dental midline, canted occlusal plane and so forth.
    The first treatment consisted of Le Fort I osteotomy, sagittal splitting osteotomy and genioplasty. This corrected the frontal and sagittal asymmetry, but the transverse asymmetry remained because the middle and lower thirds of the unaffected side of the face protruded farther and those of the affected side was more hollowed by the first reatment. At the second treatment iliac bone onlay graft was done on the affected mandibular ramus and angle, and masseter muscle myotomy and posterior and inferior border resection ostectomy of mandible were accomplished on the unaffected side. The two-stage surgery resulted in alignment of the occlusal plane with a more symmetrical face.
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  • Tohru YAMAGUCHI, Kazumasa SUGIHARA, Makoto FUJISAKI, Tsunenobu WAKAMAT ...
    1990 Volume 36 Issue 6 Pages 1519-1527
    Published: June 20, 1990
    Released: July 25, 2011
    Cementornas were classified for the W. H. O. by Pindborg and Kramer into distinct subgroups; cementifying fibroma, peripheral cemental clysplasia, gigantiform ceinentoma, and the benign cementoblastoma which is characterized histologically by the formation of sheets of cementum-like tissue and the active growth of cell-rich unmineralizecl tissue at the periphery mass.
    We experienced a case of benign cenientoblastoma with the lesion at the 6 root in a 36 year old female. It was treated by enucleation, and no recurrence occurred during follow-up intervals of 3.5 years.
    Clinico-statistical observation of 63 cases reported in Japan was made and the results obtained were as follows;
    1) Age and Sex: The average age was 18.8 years (males; 16.8 yrs., females; 23.4 yrs.). 55 cases (87.3%) were younger than 30 years. 37 cases (58.7%) occurred in males, and 26 cases (41.3%) in females.
    2) Localization: 79.4% of tumors were located within the mandible (20.6% in maxilla) and almost half the lesions (50.8%) were associated with the first mandibular molar.
    3) Chief complaint: Swelling occurred in 20 cases (35.7%), pain in 6 cases (10.5%), and both in 21 cases (36.8%).
    4) Size: 58.0% were between 2.0cm and 3.0cm, 28.0% over 3.0cm, and 14.0% between 1.0cm and 2.0cm.
    5) Recurrence: Recurrence occurred in only 4 cases (7.8%).
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  • Yoshitaka HONDA, Minoru AMAGASA, Noboru MATSUDA
    1990 Volume 36 Issue 6 Pages 1528-1537
    Published: June 20, 1990
    Released: July 25, 2011
    We examined 23 patients with hcrpetic gingivostomatitis and 3 with herpes zoster presenting oral signs from February, 1985 to November, 1989 in our department.
    1. In herpetic gingivostomatitis the affected age was above 20 in 18 cases accounting for 78.2% and the initial infection did not always occur in infancy and childhood. Initial infection was liable to occur in adolescence and adulthood and the recurrent type was frequently observed. Hunts syndrome was observed in one of the herpes zoster cases.
    2. The disease type of herpetic gingivostomatitis was unclear and a relationship between the disease type and the course of signs was suspected. Unclear signs of gingivitis were observed in 4 cases. The oral signs of herpes zoster occurred almost simultaneously and ipsilaterally with eruption.
    The chief complaint in all cases was either contact pain or eating disorder.
    3. The histopathological image revealed ballooning degeneration of the vesicle wall and vesicle formation in the epitherial membrane in both diseases, and an intranuclear inclusion body as observed.
    In the electron microscopical image, HSV and VZV were 150-200 nm in diameter and were of various types including the immature type in monocircular form and the mature type showing a triple structure, and the mature type was frequently observed in the fibrin tissue and intercellular space.
    Cells presumed to be the intranuclear inclusion body were filled up with immature viruses. The type in which several microcircle structures with a central core morphology different from that of HSV was included in the VZV.
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  • Hitoshi TAGUCHI, Chizuru ITO, Yutaka HASHIMOTO, Hiroaki TANIOKA
    1990 Volume 36 Issue 6 Pages 1538-1543
    Published: June 20, 1990
    Released: July 25, 2011
    The micrognathia of a 16 year old female, diagnosed as Treacher Collins Syndrome, was corrected surgically with Kazanjian's method and chinplasty. The result has been satisfactory in a 8 month follow-up.
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  • Michitoki KINEHARA, Kenichi SATO
    1990 Volume 36 Issue 6 Pages 1544-1549
    Published: June 20, 1990
    Released: July 25, 2011
    Glanzmann's thrombasthenia is a rare congenital platelet disorder characterized by prolonged bleeding time, qualitative platelet defect and severe hemorrhagic episodes.
    On the occasion of tooth extraction, patients with this disorder have been mostly managed by administration of blood or blood components. In the case of platelet transfusions, there may be risks of causing hepatitis, HLA antigen products and graft versus host disease. Therefore, if postsurgical bleeding can be possibly controlled with local hemostatic procedures, it is desirable to avoid transfusions of blood or blood components. In this report, local hemostatic treatment combined with Oxycel®, Peripack® and a resin sprint were sufficient to control the postsurgical bleeding without any blood supplements.
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  • Keiji MURAKAMI, Kohichi OKABE, Ryuzo KATO, Shigehiro KUMAGAI, Kiyomasa ...
    1990 Volume 36 Issue 6 Pages 1550-1554
    Published: June 20, 1990
    Released: July 25, 2011
    Lipoma, a benign lesion composed largely of fat tissue, is one of the most common of all neoplasms and is rarely seen in the oral cavity. We experienced two cases of lipoma in the oral cavity.
    Case 1: The patient, a fifty-four year old woman, noticed swelling on her left buccal mucosa. The tumor arose from the submucosal region of the mucobuccal junction which corresponded to the left mandibular molars. The tumor was excised under local anesthesia. From histological examination, the diagnosis of lipoma was based on the fact that the circumscribed mass of mature fat cells was observed below thin fibrous connective tissues.
    Case 2: The patient, a seventy-five year old woman showed a swelling on her right maxilla tuberosity. The tumor was excised under local anesthesia. From histological examination, the diagnosis of fibrolipoma was made based on the fact the circumscribed mass of mature fat cells was observed below rich fibrous connective tissues.
    Postoperative courses of those patients were not eventful.
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  • Kirihito HAYASHIDA, Hitoshi KAMATA, Gouichi MATSUMOTO, Yuji OGAWA, Mak ...
    1990 Volume 36 Issue 6 Pages 1555-1560
    Published: June 20, 1990
    Released: July 25, 2011
    This case report describes unusual dermoid and epidermoid cysts in the oral region. This lesion was presented clinically as a coexistence case of a large dermoid cyst and a small epidermoid cyst of the floor of the mouth. A 21 year-old man was seen on February 14, 1989, because of swelling under the tongue. On palpation there was a large mass with slight pressure pain. The large mass was removed with another smaller mass under general anesthesia. Histologically, the large mass was a dermoid cyst and small mass was a epidermoid cyst.
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  • Akira ISHIHARA, Toshiyasu YAMASHITA, Ataka ITO, Kenji YOSHIDA, Masahik ...
    1990 Volume 36 Issue 6 Pages 1561-1568
    Published: June 20, 1990
    Released: September 13, 2011
    We experienced a case of a salivary calculus which contained a limb of a shrimp.
    The patient, a 37 year old male, was referred to our department complaining of a swellingin the right side of his submandible which increased in size and was painful while eating.
    The salivary calculus in the right submandible duct was diagnosed from the occlusal radiogram findings.
    When the calculus was removed it was found to be the size of a grain of rice with a stick-like object pierced through it.
    Pathological findings seemed to show a stratiform structure of calculus around the foreign body at the center.
    However, when the cut surface of the salivary calculus was examined for the distribution of Ca and P by a computer aided microanalyzer (CMA) and observed by the scanning electron microscope, it was suspected that the beginning point of the calculus was in another area next to the foreign body.
    As to the foreign body, it stuck in the floor of his mouth when the patient ate a fried shrimp 3 years ago. The findings obtained from the limb of a shrimp specimen being structurally similar, the foreign body was suspected of being the limb of a shrimp.
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  • Kenichi YANAGIYA, Motohiro OHKOSHI, Makoto NAKATSURU, Katsumi UOSHIMA, ...
    1990 Volume 36 Issue 6 Pages 1569-1574
    Published: June 20, 1990
    Released: July 25, 2011
    Cementifying fibroma is believed to be rare even among odontogenic tumors of the jaws.
    We treated a case of cementifying fibroma of the left mandibular bone in a 20 year old woman. The patient's course, treatment and the pathological findings are reported in this study, with reference to 45 cases in Japan examined between 1980 and 1989.
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