| Project/Area Number |
08672389
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
矯正・小児・社会系歯学
|
|---|
| Research Institution | TOKYO DENTAL COLLEGE |
|---|
Principal Investigator |
MIYAZAKI Haruyo TOKYO DENTAL COLLEGE,DEPARTMENT OF DENTISTRY,ASSISTANT, 歯学部, 助手 (30174163)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
MOTEGI Etsuko TOKYO DENTAL COLLEGE,DEPARTMENT OF DENTISTRY,LECTURER, 歯学部, 講師 (50147253)
|
|---|
| Project Period (FY) |
1996 – 1998
|
| Project Status |
Completed (Fiscal Year 1998)
|
| Budget Amount *help |
¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1998: ¥300,000 (Direct Cost: ¥300,000)
Fiscal Year 1997: ¥300,000 (Direct Cost: ¥300,000)
|
|---|
| Keywords | Orthodontics / Retention / Relaps / Stability / Dental model / Palate / Three-dimension alanalyzing system / Three-dimensional analyzing system / palate / 矯正 / リテンション / 治療後安定性 / 三次元計測 / レーザーディジタイジング / 重ね合わせ / 歯列模型 / 口蓋 |
|---|
| Research Abstract |
in this study we compared the posttreatment stability of occlusion in adults and adolescents treated for crowding or maxillary protrusion with four-premolar extractions and edgewise mechanics at an average of more than 4 years out of treatment. The adolescent sample showed a significantly greater posttreatment increase in mandibular anterior crowding than the adult sample. Posttreatment overjet and overbite remained more stable in the adolescents. We noted a correlation between in-treatment expansion and posttretment narrowing of mandibular intercanine width in the adults. Differences in postorthodontic occlusal changes were noted between the adult and adolescent samples.
|
