1994 Fiscal Year Final Research Report Summary
A study on postoperative facial predictions of patients with jaw deformity.
| Project/Area Number |
05807193
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Surgical dentistry
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| Research Institution | Osaka Dental University |
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Principal Investigator |
KUBO Yoshinobu Osaka Dental University Assistant Professor, 歯学部, 助手 (70161669)
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| Co-Investigator(Kenkyū-buntansha) |
TAKAHASHI Ichiro Osaka Dental University Assistant Professor, 歯学部, 助手 (40163240)
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| Project Period (FY) |
1993 – 1994
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| Keywords | 3-D shape measurement / soft-tissue profile / simple regression linear analysis / jaw deformity / post-operative facial pediction / dento-maxillofacial model |
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| Research Abstract |
At first, in this study, we confirmed that the patient face were measured exactly of patients by using non-cotact 3-D shape measurement apparatus with image encoder.
To investigate exact changes of soft-tissue profile on midsagittal plane associated with the vertical and horizontal movement of mandible, the face of 15 women with normal occlusion were measured by using non-cotact 3-D shapemeasurement apparatus with image encoder. In the measurement, the mandible of the subjects were respectively induced with a bite plate, horizontally downward from centric position every 1mm (1-4mm), and forward every 1mm (0-7mm) from each downward position.
After each 3-D data of facial soft tissue were overlapped by using FITTING PROBRAM (3D-SPHIIU), simple regression linear analysis was performed to obtain the regression formula which determines the 2-D movement of 21 points on soft-tissue profile of mid-sagittal plane to the movement of mandible.
As the results of this study, exact ratios of soft tissue changes in relationship to the simple movement of mandible were clarified.
On the basis of this result, we found the exact technic of post-operative soft-tissue profile prediction of patients with jaw deformity.
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