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Volume 55, Issue 5
Displaying 1-11 of 11 articles from this issue
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Preface
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[in Japanese]2009 Volume 55 Issue 5 Pages 211
Published: 2009
Released on J-STAGE: August 09, 2013
JOURNAL FREE ACCESSDownload PDF (125K)
Invited review article
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Fumihiko WATANABE2009 Volume 55 Issue 5 Pages 212-218
Published: May 20, 2009
Released on J-STAGE: August 28, 2012
JOURNAL FREE ACCESSImplant treatments have been applied clinically over 40 years since osseointegrated implant rehabilitation had been introduced in early 1960's. For these years, many research papers are reported in Europe, America and Asian countries on basic research and clinical application. Now, Implant treatments covered from single tooth missing to total edentulous and they are restored esthetically and functionally and naturally. In background, there are advancement of treatment techniques, improvement of implant system and higher level of Quality of Life of patients. Concretely, they are extension of implant indications and maintenance of circumference surrounding implant by hard and soft tissue management. On implant success, implant team approach consisting of dentist, dental hygienist, dental technician and patient's family for patients sharing of treatment goal are extremely important. Restoration driven is one of the treatement method decided by final restoration which are planned with patient's desire, local condition, general condition. Number of implants, implant size, implant position and necessity of hard tissue management are decided.
Nowadays, even though patients demand immediate loading by reason of shortening of treatment period, the treatment method do not recognized routinely except over denture for mandibulor total edentulous. For the success of implant success, patients conditions including local, general, psychological conditions, plaque control and patient's corporation for implant treatment are not only important but also treatment ability and technique of dental team.View full abstractDownload PDF (2573K) -
Yoshiyuki MORI2009 Volume 55 Issue 5 Pages 219-225
Published: May 20, 2009
Released on J-STAGE: August 28, 2012
JOURNAL FREE ACCESSAlveolar ridge augmentation by bone grafting has been carried out for a localized alveolar ridge defect to complete oral rehabilitation with endosseous implants. This procedure has several disadvantages, such as morbidity of the donor site or lack of soft tissue. On the other hand, distraction osteogenesis makes it possible to augment an alveolar ridge without bone grafting and allows simultaneous soft tissue expansion. Therefore this technique seems to be useful for alveolar ridge augmentation in patients undergoing dental implant treatment. However, in this procedure, several problems still remain such as infection or resorption of transport segment. Consequently we should make a deliberate choice for alveolar ridge augmentation.View full abstractDownload PDF (3146K)
Case report
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Mihoko IKEDA, Joji SEKINE, Kazuo SANO, Takayoshi TOBITA, Seigo OHBA, I ...2009 Volume 55 Issue 5 Pages 226-230
Published: May 20, 2009
Released on J-STAGE: August 28, 2012
JOURNAL FREE ACCESSArteriovenous malformation(AVM)rarely occurs in the head and neck region as compared withother sites . In the oral and maxillofacial region, most cases of AVM, including hemangiomas, occur in soft tissue and rarely arise in the jaw. Embolization is currently used as a safer treatment method for mandibular AVM because profuse intraoperative bleeding can occur with traditional surgical procedures.
We report favorable results obtained after conducting a 9-year follow-up study of a 14-year-old boy who underwent embolization for AVM that occurred from the buccal region to the body of the mandible. Abnormal bleeding developed after extraction of the right second premolar at a dental clinic, and the patient was referred to our department, where he underwent pressure hemostasis. As CT and MRI confirmed AVM from the buccal region to the mandible, we performed polyvinyl alcohol embolization of the main nutrient artery, as well as direct coil embolization of the varix. Subsequently, after 9 years of follow-up, blood flow has decreased, with no recurrence.View full abstractDownload PDF (3358K) -
Tomoaki IMAI, Masahiro MICHIZAWA, Hidetaka SHIMIZU, Noritami TAKEUCHI, ...2009 Volume 55 Issue 5 Pages 231-235
Published: May 20, 2009
Released on J-STAGE: August 28, 2012
JOURNAL FREE ACCESSChildren often play with foreign objects such as a toothbrush in their mouths and sustain intraoral lacerations. Rarely, the objects penetrate into the parapharyngeal space and have to be surgically removed in cooperation with other specialties.
We report a case of an intraoral penetration injury caused by a toothbrush entering the parapharyngeal space. A 2-year-old girl who was brushing her teeth before bedtime was intraorally impaled with a toothbrush after falling from an indoor jungle gym for infants. The patient was transferred to the emergency room in our hospital. CT scanning showed the toothbrush head near the internal carotid artery in the parapharyngeal space. Antibiotics were intravenously administered, and the foreign body was removed under general anesthesia, followed by wound suturing. The patient was discharged on the 7 day without any complications such as post-traumatic thrombosis of the internal carotid artery or deep neck abscess.
It is important to adequately educate parents and their children about the dangers of a toothbrush as a foreign body that can cause serious penetration injuries.View full abstractDownload PDF (2863K) -
Taketoshi KUBOTA, Tadafumi ADACHI, Katsuki YAMAZAKI, Noriko OGAWA, Sug ...2009 Volume 55 Issue 5 Pages 236-240
Published: May 20, 2009
Released on J-STAGE: August 28, 2012
JOURNAL FREE ACCESSWe report a rare case of rhinogenous optic neuritis(RON)that was induced by odontogenic maxillarysinusitis in a 34-year-old woman. The patient was referred to our hospital because of visual disturbance of the left eye, gradually developing over the course of 1 month. On presentation to the Department of Ophthalmology, the corrected visual acuity and central critical flicker frequency of the affected left eye was 1.0 and 24Hz, respectively (1.2 and 45 Hz for the right eye). The left eye also showed paracentral scotoma. Computed tomography and magnetic resonance imaging revealed left sphenoid and maxillary sinus opacification, which indicated thickening of these sinus membranes. For a clinical diagnosis of RON in the left eye, a otolaryngologist performed endonasalsphenoid and maxillary sinusotomy under general anesthesia. After sinusotomy the patient came to our department for further evaluation. A panoramic radiograph showed projection of root canal filling material to the left maxillary sinus from the apex of the left maxillary second premolar. We extracted this tooth and the projecting material. Visual symptoms completely resolved 3 months after diagnosis by collaboration among the patient's ophthalmologist, otolaryngologist, and oral and maxillofacial surgeon.View full abstractDownload PDF (2348K) -
Daichi CHIKAZU, Yoshiyuki MORI, Hideto SAIJO, Hisako FUJIHARA, Mitsuyo ...2009 Volume 55 Issue 5 Pages 241-245
Published: May 20, 2009
Released on J-STAGE: August 28, 2012
JOURNAL FREE ACCESSAmeloblastoma is a typical benign odontogenic tumor that occurs in the jaw. Common treatment methods for cystic ameloblastoma include fenestration, in which the cystic cavity is exposed to the oral cavity by resecting a part of the cyst wall along with the mucosa and bone, and the dredging method, in which the tumor is totally resected and the surface of the bone wound is covered with a piece of gauze or other material. In the latter method, bone regeneration is promoted by repeatedly extirpating scar tissue, which inhibits osteogenesis, at appropriate intervals. Although segmental resection and other types of jaw resection are performed in patients with recurrence, resection of the inferior alveolar nerve with reconstruction using a bone graft is required. We describe the surglcal excision of an ameloblastoma that recurred in the posterior part of the mandibular ramusafter treatment by the dredging method. We used an extraoral approach in which the lateral cortical bone of the mandibular ramus was removed without performing segmental resection. The morphology and function of the jaw were preserved by this method. We report on a patient who was treated by this operative procedure.View full abstractDownload PDF (3463K) -
Kenji YAMAGUCHI, Maki SAEKI, Atsushi YASUI, Junpei YAMAGATA, Mika EGUC ...2009 Volume 55 Issue 5 Pages 246-249
Published: May 20, 2009
Released on J-STAGE: August 28, 2012
JOURNAL FREE ACCESSWe describe a patient with a blood boil of the maxillary sinus that protruded through the alveolar ridgeinto the oral cavity. The patient was a 55-year-old man who visited our department because of a mass lesion in the left side of the maxilla. On X-ray film, the lesion occupied the left maxillary sinus, MRI findings suggested hemangioma. The lesion was diagnosed as heamangioma on biopsy.
To prevent massive bleeding during surgery, selective embolization of the left maxillary artery and facial artery was performed 2 days before the operation. Consequently, the lesion could be resected safely. There have been no signs of recurrence. Since tha surgical specimen consisted of fibrin and blood components and showed no pathologic feature of hemangioma, the patient was given a definitive diagnosis of a blood boil of the maxillary sinus.View full abstractDownload PDF (2842K) -
Souichi YANAMOTO, Goro KAWASAKI, Akio MIZUNO, Shuichi FUJITA, Tohru IK ...2009 Volume 55 Issue 5 Pages 250-254
Published: May 20, 2009
Released on J-STAGE: August 28, 2012
JOURNAL FREE ACCESSCartilaginous choristoma of the tongue is a rare lesion. We report a case of cartilaginous choristomaarising from the margin of the tongue, with a review of the literature. A 16-year-old girl was referred to our department because of a small asymptomatic mass on the posterior margin of the tongue of 5 year's duration. The lesion was approximately 3 mm in diameter and pediculate. The lesion was excised under general anesthesia, and the pathological diagnosis was cartilaginous choristoma. Histopathological examination of the excised specimen revealed a submucous spherical nodule composed of heterotopic hyaline cartilage, myxoid fibrous tissue, and circumscribed fibrous connective tissue. A gradual transition was noticed among these tissues. The histopathological findings suggested that the metaplastic formation of cartilage was caused by the transformation of fibrous tissue into cartilage.View full abstractDownload PDF (4124K) -
Yuki TAKAGI, Yasunori SUMI, Aya OHSHIMA, Fumitaka TERASAWA, Nobuyoshi ...2009 Volume 55 Issue 5 Pages 255-259
Published: May 20, 2009
Released on J-STAGE: August 28, 2012
JOURNAL FREE ACCESSMethotrexate（MTX）is a useful and commonly employed drug for the treatment of chronic rheumatoidarthritis（RA）, as compared with other antirheumatic drugs. This report describes a case of RA with severe stomatitis caused by MTX. A 79-year-old woman visited our hospital because of stomatitis in March 2008. Clinical examination revealed multiple stomatitis of the labial, buccal, and palatal mucosa. Blood examination revealed leukocytopenia, thrombocytopenia, and an increased level of CRP（22.84mg/dl）. Her medical history included RA. She had received MTX and prednisolone since November 2001. Our clinical diagnosis was severe stomatitis caused by MTX. MTX was stopped, and she was given calcium folinate. After 6 days, leukocytopenia became worse, and erythrocytopenia developed. Granulocyte-colony-stimulating factor was administered, and the dose of calcium folinate was increased. The patient’s general condition and oral mucosal ulcer improved.
MTX may lead to an oral mucosal ulcer as a premonitory symptom of myelosuppression. We must bear in mind the side effects of MTX when we examine patients with severe oral ulcers.View full abstractDownload PDF (3921K) -
Yoko TANABE, Yoshimi ICHINOKAWA, Youhei NISHIHORI, Satoshi SHIBATA, Sa ...2009 Volume 55 Issue 5 Pages 260-263
Published: May 20, 2009
Released on J-STAGE: August 28, 2012
JOURNAL FREE ACCESSWe report a case of a calculus-like calcified body at the anterior portion of the masseter muscle. A 26-year-old man presented with a small, movable, hard mass in the left buccal submucosa. Magnetic resonance imaging revealed a round lesion at the anterior portion of the masseter muscle. The mass appeared to be calcified and was enucleated. The extracted specimen was a spherical, calculus-like, calcified body, measuring 12 × 11 × 9 mm and encased in fibrous tissue. The patient had no history of tumor or trauma. The possibility of parotid sialolithiasis was excluded. The calculus-like calcified body morphologically and histologically resembled a phlebolith, and did not adhere to muscle tissue. The calculus-like calcified body was thus diagnosed as a phlebolith arising from a venule at the anterior portion of the masseter muscle.View full abstractDownload PDF (3773K)
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