| Project/Area Number |
03454480
|
|---|
| Research Category |
Grant-in-Aid for General Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
小児・社会系歯学
|
|---|
| Research Institution | Niigata University |
|---|
Principal Investigator |
HANADA Kooji Niigata University, School of Dentistry, Professor, 歯学部, 教授 (90013979)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
SAWAHATA Yosiaki Niigata University, Dental Hospital, Instructor, 歯学部・附属病院, 助手 (60206026)
HARA Shoji Niigata University, School of Dentistry, Instructor, 歯学部, 助手 (80208652)
MORITA Schuichi Niigata University, Dental Hospital, Lecturer, 歯学部・附属病院, 講師 (60157899)
|
|---|
| Project Period (FY) |
1991 – 1992
|
| Project Status |
Completed (Fiscal Year 1992)
|
| Budget Amount *help |
¥4,700,000 (Direct Cost: ¥4,700,000)
Fiscal Year 1992: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1991: ¥4,100,000 (Direct Cost: ¥4,100,000)
|
|---|
| Keywords | mandibular lateral deviation / postero-anterior cephalogram / mandibular protrusive movement / sagittal condylar path / Axiograph / s-v ragiogram |
|---|
| Research Abstract |
The purpose of this study was to clarify relationships between the skeletal pattern and functions in the patients with craniofacial asymmetry. First, we measured the degree of mandibular lateral deviation on the postero-anterior cephalogram. The antero-posterior position and the degree of long axis of right and left condyles on the s-v ragiogram were examined. The mandibular protrusive movement was also investigate with a computer aided Axiograph. The following results were obtained: 1.The long axis of condyle had a tendency to be steeper to the mid-sagittal plane on the mandibular deviation side than that on the opposite side, and the difference of that degree between both sides was prone to be larger with the degree of mandibular lateral deviation. 2.The condyle tended to be in position more backward on the mandibular deviation side than on the opposite side, and the difference of antero-posterior distance of both condyles became larger with the degree of mandibular lateral deviation. 3.The cases with mandibular deviation showed asymmetry in the aspect of sagittal inclination, length, and curvature of the condylar path in the mandibular protrusive movement. Secondarily, we investigated the alteration of condylar path after the orthodontic treatment in young patients shoeing anterior malalignment by using the Axiograph. As a result of this, it was indicated that the harmonious movement of the condyles might be obtained due to removing the occlusal interference of anteriors.
|
