| Project/Area Number |
15592084
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
補綴理工系歯学
|
|---|
| Research Institution | Matsumoto Dental University |
|---|
Principal Investigator |
YAMASHITA Shuichiro Matsumoto Dental University, Graduate School, Oral and Maxillofacial Biology, Professor, 大学院・歯学独立研究科, 教授 (80242212)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
KIRIHARA Takanao Matsumoto Dental University, Dental Hospital, Interdisciplinary Dentistry, Research Associate, 歯学部附属病院, 助手 (70340049)
小澤 武史 松本歯科大学, 歯学部, 助手 (80298405)
|
|---|
| Project Period (FY) |
2003 – 2004
|
| Project Status |
Completed (Fiscal Year 2004)
|
| Budget Amount *help |
¥3,300,000 (Direct Cost: ¥3,300,000)
Fiscal Year 2004: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2003: ¥2,700,000 (Direct Cost: ¥2,700,000)
|
|---|
| Keywords | occlusal supports / shortened dental arch (SDA) / radiograph / condylar displacements / patient's satisfaction |
|---|
| Research Abstract |
Purpose : In the last two decades, the Shortened Dental Arch (SDA) concept has been introduced as a treatment strategy for posterior edentulous patients! i.e. there is no need to restore the missing of molar region. On the other hand, clinical experience suggests various possibilities for functional disturbance starting from instability of occlusion. The purpose of this study is to clarify whether SDA concept fits for all posterior edentulous patients.
Study selection : Ten patients with unilaterally posterior tooth missing were enrolled in this study, and a multiple evaluation for SDA condition was applied to them. This evaluation consists of the objective evaluation (radiographic evaluation for TMJ and measurement of condylar displacements during maximum voluntary clenching) and the subjective evaluation (questionnaire).
Result : Abnormal radiographic appearances were observed in 50% of subjects. Condylar displacements during clenching were significantly high value in the edentulous-side condyle compared to that in the dentulous-side condyle. 40% of subjects showed high level of complains for SDA conditions.
Conclusions : These results indicated the potential risks for the oral functions. We wish to propose the clinical guidelines for making a decision whether to "wait and see" the SDA patients without any positive treatment or to start prosthetic intervention immediately.
|
