著者

中村 誠司 篠原 正徳 原田 猛 廣木 朗子 岡 増一郎

出版者

Japanese Society of Oral and Maxillofacial Surgeons

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.41, no.1, pp.62-69, 1995-01-20 (Released:2011-07-25)

参考文献数

25

被引用文献数

2 1

---

Sixty dentigerous and 10 primordial cysts were examined clinically and pathologically. Fifty-six of the dentigerous cysts had non-keratinizing epithelium and 9 of the dentigerous cysts had keratinizing epithelium. However, 5 keratinizing dentigerous cysts and 1 non-keratinizing primordial cyst were observed as exceptions.Radiographically, the dentigerous cysts were generally of unilocular round shape with a well-defined border. However, the well-defined border was often lost due to severe infection. In contrast, the primordial cysts were more frequently shown to be of irregular and multilocular shape, and the well-defined border was well preserved even with severe infection. Thus, keratinizing epithelium was suggested to be involved in the formation of irregular and multilocular shape and to be more resistant to infection.Pathologically, non-keratinizing epithelium often showed proliferation, a lacy appearance, and ridge elongation in association with inflammatory cell infiltration. In contrast, such changes in keratinizing epithelium were rarely observed even with heavy inflammation. Interestingly, ameloblastoma-like epithelial proliferation and calcification in the absence of inflammation were partially observed in 6 and 7 cases, respectively, independent of keratinization of epithelium. Thus, odontogenic epithelial cells were suggested to have high proliferative and differentiative activities.

著者

大島 綾 角田 典隆 鈴木 慎太郎 長縄 吉幸

出版者

Japanese Society of Oral and Maxillofacial Surgeons

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.48, no.10, pp.530-533, 2002-10-20 (Released:2011-04-22)

参考文献数

10

被引用文献数

2 2

---

Squamous cell carcinoma arising in a dentigerous cyst is extremely rare. Diagnosis requires microscopic evidence of the transition from benign cystic epithelium to squamous cell carcinoma.We report a histopathologically documented case of squamous cell carcinoma showing malignant transformation within the wall of a dentigerous cyst. A 43-year-old woman was referred to our department for diffuse swelling of the left cheek associated with a small fistula of the buccal mucosa. Radiographic examination showed a round translucent image containing an impacted tooth in the left side of the maxilla. Squamous cell carcinoma was confirmed by excisional biopsy, and partial maxillectomy was performed. Histopathological examination of the resected specimens showed transition of the normal cystic epithelium to squamous cell carcinoma. The patient has been followed up for 4 years 5 months, with no evidence of recurrence.

著者

有馬 実咲 桑島 精一 福田 雅幸 福地 峰世 五十嵐 秀光 高野 裕史

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.67, no.5, pp.281-285, 2021-05-20 (Released:2021-07-20)

参考文献数

26

---

Ectopic impacted teeth are considered to be caused by congenital malposition of tooth germs, increased internal pressure from cysts, tumor growth, periodontal ligament traction, and rupture of the gubernacular cord. It often progresses asymptomatic, but has been reported to cause pain and infection. Here, we report a case of ectopic impacted tooth in which the mandibular horizontal impacted wisdom tooth migrated to the vicinity of the mandibular notch over 9 years. A 42-year-old woman visited our department with the chief complaint of pain in the left mandible. Upon comparison with past radiographs, the left impacted mandibular wisdom tooth was found to have migrated to the mandibular notch over 9 years. We performed an ectopic impacted wisdom tooth extraction to improve thepain. Fragile soft tissue was found forward the tooth. Histopathological specimens showed no epithelial structure and numerous plasma cell infiltrates. Immunohistochemical staining was negative for cytokeratin. The cause of the migration was considered to be the gubernacular cord thickened by inflammation. After the operation, the pain disappeared, no relapse was observed, and the patient has shown good progress.

著者

高橋 哲

出版者

Japanese Society of Oral and Maxillofacial Surgeons

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.57, no.8, pp.433-433, 2011

著者

越後 成志 高橋 俊治 飯塚 芳夫 渡辺 元裕 手島 貞一

出版者

Japanese Society of Oral and Maxillofacial Surgeons

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.25, no.5, pp.1039-1042, 1979-10-15 (Released:2011-07-25)

参考文献数

11

被引用文献数

2 1

著者

千葉 雅俊 高橋 哲

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.66, no.11, pp.540-552, 2020-11-20 (Released:2021-01-20)

参考文献数

20

---

Trigeminal neuropathy is characterized by numbness in the skin or mucosa in the distribution of the trigeminal nerves, sometimes in association with pain. Sensory deficits in the lower lip and tongue frequently causes difficulties with speech and eating. Thus, numbness in the trigeminal distribution is more distressin than numbness involving spinal dermatomes. The differential diagnosis of the causative diseases underlying the trigeminal neuropathy is difficult, because a spectrum of pathophysiological conditions may affect the trigeminal nerves, including traumatic, vascular, inflammatory, demyelinating, infectious, and neoplastic disorders. Moreover, trigeminal neuropathy develops in isolation or in combination with other neurological deficits of nearby cranial nerves or extremity. Trigeminal neuropathy may also be the presenting manifestation of malignancy, autoimmune disease, or vascular hemorrhage or ischemia of the brainstem. Thus, the findings of orofacial numbness necessitate a comprehensive assessment of all aspects of the trigeminal pathways, which may include neurophysiological, radiographic, and laboratory evaluation in addition to the careful medical interview. In this review, we illustrated some of the principal pathological conditions causing trigeminal neuropathy.

著者

山岸 眞弓美 北村 豊 矢ケ崎 崇 中嶌 哲 千野 武廣 安東 基善 枝 重夫

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.35, no.7, pp.1886-1889, 1989

被引用文献数

1

---

A pigmented nevus is defined as a harnartomatous proliferation of the melaninproducing cells (nevus cells). It is a relatively rare disease, especially in the oral mucosa. In this report, the authors present a case of a pigmented nevus of the gingiva, and review 18 cases of pigmented nevus in the region of mucous membrane or lip as previously reported in Japanese medical literature.<BR>The patient, a 63-year-old woman, was referred by her dentist complaining of denture instability due to swelling of the gingiva. About six months ago, she first noted the swelling on the left mandibular gingiva, in the area of the cuspid. The swelling gradually enlarged. At the time of oral examination, a well-defined pigmented swelling about the size of a red bean was noticed.<BR>Having been clinically diagnosed as fibroma, the lesion was surgically excised with little difficulty.<BR>A histopathological study revealed it to be an intramucosal pigmented nevus.<BR>Postoperative healing was uneventful and there has been no evidence of recurrence after a lapse of 1 year and 8 months.

著者

篠原 治征 杉浦 正

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.62, no.2, pp.100-104, 2016-02-20 (Released:2016-04-20)

参考文献数

17

---

A 34-year-old woman was referred to our department because of trismus. Physical examination showed severe trismus and stiffness of the masseter muscles. She had a miscarriage in the Philippines a few days ago, received treatment, and went back to Japan. Maternal tetanus( MT) was diagnosed on the basis of the clinical course and symptoms. The patient was immediately admitted to the intensive care unit. She was given anti-tetanus human immunoglobulin and antibiotics. The patient recovered without undergoing a tracheotomy or tracheal intubation. The World Health Organization( WHO) has reported that maternal and neonatal tetanus( MNT) has decreased in developing countries. However, delivery and miscarriage in an insanitary environment remain a problem. Tetanus is a fatal infectious disease if early treatment is not appropriately performed. An early warning symptom of tetanus is trismus. Patients with this disease may therefore initially consult a dentist or an oral surgeon. We should consider the possibility of tetanus when examining patients with trismus and observe them carefully.

著者

牧志 祥子 又吉 亮 宮本 昇 平野 惣大 仲宗根 敏幸 中村 博幸

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.67, no.3, pp.194-199, 2021

被引用文献数

1

---

<p>Malignant peripheral nerve sheath tumors (MPNSTs) are very rare malignant neoplasia that arise from the peripheral nervous system and show nerve sheath differentiation. We report a case of primary malignant peripheral nerve sheath tumor of the mandibular gingiva.</p><p> A 53-year-old male was referred to our hospital presenting with a mass and pain in the mandibular gingiva. He had no appreciable disease and paralysis of the lower lip.</p><p> Computed tomography showed resorption of the mandible but no obvious lymph node metastasis.</p><p> Biopsy revealed a possible invasive unusual neuroectodermal tumor. Surgical resection was performed and the frozen section showed negative margins.</p><p> Histology revealed atypical spindle cells with clear chromatin and clear nucleolus which had proliferated and loosely infiltrated, but the cell boundaries were unclear. Immunohistochemical staining showed positive results for S-100 protein, p53, and vimentin, but negative results for pan-cytokeratin (AE1 / AE3), Melan A, and desmin. The Ki-67 labeling index was 10%. Accordingly, we diagnosed a low-grade peripheral nerve sheath tumor of the mandibular gingiva.</p><p> There were no signs of recurrence or metastasis at two years postoperatively. MPNSTs have poor prognoses and require careful follow-up.</p>

著者

山田 美喜 沢田 圭佑 飯島 洋介 日野 峻輔 金子 貴広 堀江 憲夫

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.66, no.5, pp.256-260, 2020-05-20 (Released:2020-07-20)

参考文献数

15

---

Plerocercoid of Nybelinia surmenicola is found mainly in common squid. Plerocercoid of Nybelinia surmenicola is less recognized and has fewer clinical studies than Anisakis, which is highly pathogenic. However, understanding the clinical and histological features of plerocercoid of Nybelinia surmenicola is extremely important for differential diagnosis. We describe a case of plerocercoid of Nybelinia surmenicola invasion that occurred in the oral mucosa with clinical photographs and histopathological findings. The patient was a 65-year-old woman who presented with foreign bodies of the tongue and buccal mucosa with pain. Biopsy of the foreign bodies was performed to confirm the diagnosis. Symptoms improved after 1 week without active treatment except for antibiotic administration. At the same time, the search results for plerocercoid of Nybelinia surmenicola obtained from commercial squid were added to the findings of this study.

著者

風岡 宜暁 冨田 陽二 安井 昭夫

出版者

Japanese Society of Oral and Maxillofacial Surgeons

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.36, no.12, pp.2824-2829, 1990-12-20 (Released:2011-07-25)

参考文献数

32

---

Gas producing infections are considered to be rare in occurrence in the head and neck. A case of non-clostridial infection of which cause was unclear is reported.A 84-year-old woman was refered to our clinic with a chief complaint of swelling in the face. She had marked swelling of he right face and neck regions. The radiological finding of the face showed abundant gas in the soft tissue.The cultured face abscess revealed a growth of Bacteroide splanchnicus.Clinical diagnosis was phlegmon. A surgical excision about 5×4 cm in size was made in the necrosis tissue of the buccal, and an incision and curettage were performed in gas producing abscess of the right face, neck and chest. After operation, the data of laboratory examinations (4.8×104/m of platelet, 45% of prothrombin time) suggested disseminated intravascular coagulation (DIC). Gabexate (FOY®) and Heparin were immediatly administered, and the hematological examinations required 3 weeks to improve.In spie of irrigation, antibiotics (CTT, CLDM, CZX, PLB, CTM) and our intensive care which succeed to control the gas producing infection, the patient died of suffocation on 46 days after admission.

著者

安田 浩一 古澤 清文 奥田 大造 堀口 文嗣 長谷川 貴史 山岡 稔

出版者

Japanese Society of Oral and Maxillofacial Surgeons

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.41, no.6, pp.546-548, 1995-06-20 (Released:2011-07-25)

参考文献数

9

---

Two cases of gas gangrene in the maxillofacial region and neck that developed after odontogenic infection are reported. Case 1, a 35-year-old man, developed gas gangrene after removal of the mandibular right third molar. In case 2, a 61-year-old man, gas gangrene occurred after apical periodontitis of the mandibular right second premolar. Both cases were treated by digitally opening the site where computed tomography (CT) revealed extension of gas bubbles early after the onset of symptoms and surgical debridement with antibiotics. CT was useful in monitoring the location of gas bubbles to permit opening of the progressive large focus in multiple spaces of maxillofacial region and neck. Digital preparation of the fascia was useful for opening the focus in the early stage of the disease.

著者

梁川 哲雄 吉田 秀夫 由良 義明 浦田 満 永峰 伸一 佐藤 光信

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.32, no.8, pp.1516-1521, 1986

被引用文献数

1

---

The most effective treatment for adenoid cystic carcinomas arising from minor salivary glands is surgical removal of primary lesion including the wide safety margin. However, it is well known that the salivary gland tumors have poor prognosis and high frequency of metastasis. Therefore, the multidisciplinary therapy that prevents effectively recurrence and metastasis is needed.<BR>Two cases of adenoid cystic carcinoma of the maxillary sinus were treated according to the follwing multidisciplinary method. Case 1 (T3NOMO by JJC proposal): The patient had surgical removal of the affected maxilla and then radiation therapy. Four weeks later, adjuvant chemotherapy (Adriamycin and Cisplatin) was performed. In addition, UFT and OK-432 were administered continuously up to date from the onset of the treatment. Consequently, the patient remains be disease-free 24 months postoperation. Case 2 (T4NOMO by JJC proposeal): The patient was treated with the multidisciplinary methods such as surgical reduction of a tumor-burden, radiation therapy, intraarterial infusion of cisplatin and 5-FU into a superficial temporal artery and intradermal administration of OK-432. Thereafter, complete regression of the primary tumor was observed. However, metastasis was detected in the regional lymph nodes, which were subjected to radical neck dissection. The patient remains be disease free 8 months postoperation. These findings indicate that the multidisciplinary therapy may improve the prognosis of adenoid cystic carcinoma of the maxillary sinus.

著者

湯浅 秀道 河合 俊彦 尾澤 陽子 澤 知里 河合 幹

出版者

Japanese Society of Oral and Maxillofacial Surgeons

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.38, no.7, pp.1163-1166, 1992-07-20 (Released:2011-07-25)

参考文献数

25

被引用文献数

1 1

---

This paper describes the incidence of complications following the surgical removal of impacted third molars in our department.Also dry soket, which had a highest incidence, were investigated for causal factors; skill of operator, age or sex of the patient.Results:1. The complication was found in 8.89% of 574 surgical removals. The incidence of dry socket was 5.57%, delay in healing was 1. 57%, postoperative infection was 0.87%, postoperative nerve paralysis was 0.35%, postoperative bleeding was 0.17% and other complication was 0.35%.2. The incidence of dry socket was 0.68% in the young patient group (under 20), 6.60% in the middle group (20-29) and 8.80% in the high age group (30-).The differences between in the young patient group and other patient groups were highly significant.These data suggested that age of the patient is one of the etiological factor of dry socket.

著者

長谷川 稔洋 名島 悠峰 宗像 花楠子 家崎 憲博 小川 千晴 山内 智博

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.65, no.9, pp.611-616, 2019-09-20 (Released:2019-11-20)

参考文献数

27

---

Polycythemia vera (PV) is one of myeloproliferative neoplasms characterized by a remarkable increase in myeloid cells caused by abnormality of the hematopoietic stem cells. In patients who receive surgical treatment for PV, conflicting complications such as thrombosis and hemorrhage develop frequently. We report a case of PV diagnosed after postextraction hemorrhage. A 75-year-old woman was found to have polycythemia on a health checkup two years previously, but did not receive any treatment for it. She had her left maxillary wisdom tooth extracted at a dental clinic, but was referred to our hospital immediately to manage postextraction hemorrhage. We performed hemostatic treatment with the patient under local anesthesia. Because of the severe hemorrhage, blood examinations were performed and showed increased counts of white blood cells, red blood cells, and platelets. Therefore, we consulted a hematologist, and she received additional examinations. JAK2 gene mutation was positive, bcr/abl t (9;22) translocation was negative, and decreased erythropoietin was revealed. From these results, she was given a diagnosis of PV according to the WHO diagnostic criteria in 2016. Now, six months after tooth extraction, she is being treated by regular phlebotomy, daily oral aspirin, and hydroxyurea to control the blood cells.

著者

王 星倫 寺井 陽彦 中島 世市郎 田窪 希実子 福居 希 木村 吉宏

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.62, no.5, pp.222-225, 2016-05-20 (Released:2016-07-20)

参考文献数

8

被引用文献数

2

---

Acquired hemophilia A is a very rare disease caused by the acquisition of factor Vlll inhibitor. We report a case of acquired hemophilia A incidentally diagnosed in a patient who had bleeding after tooth extraction. A 77-year-old man who complained of bleeding after tooth extraction presented at our hospital. Hematological examination revealed a prolonged activated partial thromboplastin time (APTT), decreased coagulation activity of factor Vlll, and high level of factor Vlll inhibitor. Consequently, acquired hemophilia A was diagnosed. The patient received corticosteroids and bypass therapy. Four months later, the APTT and factor Vlll activity returned to the normal level. Although this is a very rare case, we should suspect hematologic disease, including acquired hemophilia A, when we encounter patients with bleeding after tooth extraction.

著者

品川 翔太 渡部 幸央 井比 陽佳 小池 将人 関川 翔一 神山 勲

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.66, no.11, pp.559-564, 2020-11-20 (Released:2021-01-20)

参考文献数

19

---

The prevalence of syphilis has increased in Japan since 2010. Its rapid increase among women in their 20s is of particular concern because it is associated with an increase in the prevalence of congenital syphilis. We report a case of primary syphilis diagnosed from a tongue ulcer in a pregnant woman who did not receive antenatal care. A 29-year-old pregnant woman, who did not receive antenatal care, presented with a tongue ulcer at our hospital. She had a history of being a commercial sex worker. Laboratory tests revealed elevated C-reactive protein levels (5.56 mg/dL) and positive TPLA and RPR. We referred the patient to the department of infectious diseases as well as to the department of obstetrics and gynecology. She was treated with benzylpenicillin potassium (24 MU/day) for 14 days. Later, the tongue ulcer disappeared and RPR showed negative results. She gave birth to a boy who did not have congenital syphilis. The number of patients with syphilis presenting with oral symptoms is increasing, and it is expected that more of such cases will be examined by dentists. Therefore, it is crucial to consider syphilis as a differential diagnosis of oral mucosal disease and establish coordination among specialists who can be consulted and referred to when syphilis is initially suspected.

著者

長田 道哉 林 誠一 大村 進 関戸 幹夫 小野 繁 藤田 浄秀

出版者

Japanese Society of Oral and Maxillofacial Surgeons

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.32, no.6, pp.963-971, 1986-05-20 (Released:2011-07-25)

参考文献数

38

被引用文献数

1

---

The clinical research of peripheral facial nerve paralysis during the last 10 years has been carried out with 39 cases in our clinic. of these, 6 cases of facial nerve paralysis after dental procedures were reported in this paper.We analysed the relationship between peripheral facial nerve paralysis and dental procedures with special reference to etiology, speed of onset, recovery, etc.

著者

若林 健 竹内 憲民 楠山 友紀子 山本 汐里 文元 玲子 由良 義明

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.61, no.8, pp.424-428, 2015-08-20 (Released:2015-11-24)

参考文献数

10

被引用文献数

1 1

---

We report a case of extensive bisphosphonate-related osteonecrosis of the jaw (BRONJ) associated with a mandibular fracture, which improved after treatment with teriparatide and surgical therapy. An 83-year-old woman was referred to our hospital because of swelling of the submandibular region. At presentation, clinical examination revealed swelling of the right submandibular region and discharge of pus. A computed tomographic (CT) scan confirmed osteolytic changes and a fracture of the mandible. Three months after bone curettage, fixation with a titanic plate, and treatment with teriparatide, new bone formation was observed. Five months after this therapy, the fractured segment had completely healed. Teriparatide may contribute to the improvement of BRONJ.

著者

山田 朋弘 森 悦秀 南 克浩 三島 克章 内田 浩 塚本 雄一 宮島 貴博 松本 憲

出版者

社団法人 日本口腔外科学会

雑誌

日本口腔外科学会雑誌 (ISSN:00215163)

巻号頁・発行日

vol.45, no.7, pp.427-434, 1999-07-20

参考文献数

12

被引用文献数

3 1

---

Nineteen cases of unilateral cleft lip and nose were measured and evaluated before and after open rhinoplasty with the use of facial plaster models and a high-accuracy threedimensional digitizer (TRISTATION400CNC, Nikon, Tokyo). Surgery was performed from 1990 through 1994. The mean age of the subjects was 18.6 years.<BR>Three-dimensional wire-frame models were obtained from facial plaster models, and nasal landmarks were extracted automatically by an original program. The landmarks were evaluated and compared according to three operation techniques:(1) Flying bird group: A flying bird incision was made across the columella, and a tornado incision was made in the nostril. After cartilage reconstruction, complex tissue was transplanted into the nostril. Furthermore, Z-plasty was done across the white lip and the alar base of the affected side.(2) Col. base-graft group: An incision was made in the columella base and nostril rim. After cartilage reconstruction, ear cartilage was transplanted onto the nasal tip, alar, or both (3) Col. base-non-graft group: An incision was made in the columella base and nostril rim. The nasal cartilage was reconstructed without a graft.<BR>The nasal tips deviated about 5 mm to the normal side before operation and were corrected after operation in all groups. In the flying bird and col. base-graft groups, the nasal tips moved about 3 mm anteriorly. The difference in the distance between the columelia base and the alar base decreased markedly in the flying bird group. The columella base deviated about 3mm to the normal side before surgery and was corrected after surgery in all groups. In the Col. base-graft group, the columella base protruded inferiorly after operation. No remarkable change was observed in the alar dip in any group.<BR>The procedure used in the flying bird group was suggested to result in a better morphological outcome than the procedures used in the col. base with/without graft groups.