Complications of mandibular sagittal split osteotomy for correction of mandibular prognathism

Sagittal split ramus osteotomy is most frequently performed to correct mandibular prognathism. In this study, intra- and postoperative complications were evaluated in 92 patients treated with this technique. Intraoperative complications occurred in 6 cases (6.5%) of the cases. In addition to experience and skill, complications appeared related to the design of the osteotomy and to attention to detail during the operation. Neurological damage following the sagittal split ramus osteotomy is a common complication after the surgery. Here, sensory disturbance was observed in 63 cases (68.5%) several days after the operation, and in 21 cases (22.8%) at 6 months, 8 cases (8.7%) at one year, 5 cases (5.4%) at 2 years, and 3 cases (3.3%) at 3 years. It was suggested that nerve damage is closely related to the degree of strain and compression of the inferior alveolar nerve

北海道医療大学歯学部附属病院入院患者の臨床統計学的観察

北海道医療大学歯学部付属病院の外来は1978年12月に開始し,入院病棟は1980年6月に24床で開始した.これまでの25年間における病棟入院患者の臨床統計的観察を行ったので報告する.結果は以下に示す.1.総入院患者数は3055例で総歯科新患の10.8%を占めていた.2.口腔外科疾患別では,顎変形症が最も多く393例で入院患者の12.9%を占めていた.3.病床稼働率は17.7%で,平均在院日数は14.2日で経年的に減少傾向にあった.4.25年間の入院診療報酬額は9億5715万円で歯科診療報酬額の20.4%を占めていた.The outpatient division of the Dental School hospital of the Health Sciences University of Hokkaido started in December 1978, and a hospitalization ward started with 24 beds opened in June 1978, and closed in April, 2005. Clinico-statistical observations for 25 the years while the inpatient division, was opened were evaluated. 1. The total number of inpatients was 3055, and comprised 11.8% in all initial patients of the dental hospital for the 25 years. 2. Patients with jaw deformities were the most common, 393 and comprised 12.4% of all hospitalized patients with oral and maxillofacial surgical complaints. 3. The rate of occupiod beds the operating bed ratio was 17.7% and the average length of hospitalization was 14.2 days. This number showed a tendency to decrease over the years. 4. The income from hospitalized care was 957.15 million yen and it comprised 20.4% of the total income of the dental department

北海道医療大学歯学部附属病院における顎矯正手術患者の臨床統計学的観察

A total of 55 patients who underwent orthognathic surgery from July 2002 to June 2005, were observed clinicostatistically. The results may be summarized as follows: 1. There were 11 males and 44 females. 2. The average age was 27.7 years, with an average of 22.3 years for males and 28.8 years for females. 3. The diagnosis of mandibular prognathism was made for 50 of the patients (90.9%). Sagittal split ramus osteotomy (SSRO) was performed on 37 (67.3%) cases. 4. The mean time of operation for SSRO was 2hr. 22min±1hr, and 11min and 4hr. 26min±1hr. 29min for the SSRO+Le Fort I osteotomy. 5. The mean blood loss was 130.9±157.9ml for SSRO and was 220.6±143.7ml for SSRO+Le Fort I osteotomy

結晶化ガラス顆粒の臨床応用

This reports tha development of bioactive glass ceramic particles and evaluates their use inclinical applications. 1. The subjects of the evaluation were 13 impacted teeth, 17 intramaxillary cysts (not including radicular cysts), and 7 atrophic mandibular alveolar ridges. 2. The results were classified into effective, slightly effective, ineffective, and harmful, a very high proportion, 33 or 89.3%,were judged effective or slightly effective. 3. None were evaluated to be harmful, showing the safety of the present material. Among the ineffective cases there were open wounds due to infection, leakage of the supplied material, and fistulation. In cases where inflammation had not disappeared at the supply there were cases where the particles had to be completely removed due to infection, It was determined the that this was not due to the material, but possidly due to the surgical procedures, as there were no further complications in the tretment. 4. From the results reported here, the bioactive glass ceramic material here was found to be useful in the articial bone needed after atrophic mandibular alveolar ridge surgery

早期負荷インプラント用カスタムトレーについて

This clinical report discusses a custom made tray used for fabrication of the superstructure of early load implants. The activities of the dental technician impressions and bite taking simultaneously in implant operations. The results of the observations led to the manufacture of a custom made tray with a duplicate denture made from the full denture used. The bite-seating impression was performed with the custom made tray, and the superstructure was installed in four treatment days. The progress is excellent, and the patient expresses satisfaction with the result. As a result of this study, it was possible to made the bite-seating impression by the full denture in use. After the operation, the superstructure could be made in a short time. Only very small adjustments of the vertical dimension and horizontal position were necessary because the custom made tray made from a duplicate denture

画像誘導システム(IGI)を用いた口腔インプラント手術

In recent years, as the needs for the dental implant treatment needs, dental implant therapy has been demanded of oral rehabilitation, esthetic restorations, and improvement QOL more highly. Image guided implantation system (IGI) is able to archive the highest level of accuracy when performing dental implant surgery by sophisticated planning software and real time navigation. IGI was introduced to implant special outpatient on dental and internal medicine clinic health sciences university of Hokkaido in 2005. We reports that some cases by IGI were experienced. As the result, IGI allowed safety invasive surgery with enhanced accuracy and efficiency and shorter operation time than past surgery methods

Observational Variables for Considering a Switch from a Normal to a Dysphagia Diet among Older Adults Requiring Long-Term Care: A One-Year Multicenter Longitudinal Study

This one-year multicenter longitudinal study aimed to assess whether older adult residents of long-term care facilities should switch from a normal to a dysphagia diet. Using the results of our previous cross-sectional study as baseline, older adults were subdivided into those who maintained a normal diet and those who switched to a dysphagia diet. The explanatory variables were age, sex, body mass index (BMI), Barthel Index, clinical dementia rating (CDR), and 13 simple and 5 objective oral assessments (remaining teeth, functional teeth, oral diadochokinesis, modified water swallowing test, and repetitive saliva swallowing test), which were used in binomial logistic regression analysis. Between-group comparison showed a significantly different BMI, Barthel Index, and CDR. Significant differences were also observed in simple assessments for language, drooling, tongue movement, perioral muscle function, and rinsing and in objective assessments. In multi-level analysis, switching from a normal to a dysphagia diet was significantly associated with simple assessments of tongue movement, perioral muscle function, and rinsing and with the objective assessment of the number of functional teeth. The results suggest that simple assessments can be performed regularly to screen for early signs of discrepancies between food form and eating/swallowing functions, which could lead to the provision of more appropriate food forms