| Project/Area Number |
01440081
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| Research Category |
Grant-in-Aid for General Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
小児・社会系歯学
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| Research Institution | Kyushu University |
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Principal Investigator |
NAKATA Minoru Kyushu University Faculty of Dentistry Professor, 歯学部, 教授 (40014013)
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| Co-Investigator(Kenkyū-buntansha) |
OGATA Tetsuro Kyushu University Faculty of Dentistry Instructor, 歯学部, 助手 (50204061)
MATSUMOTO Toshihide Kyushu University Faculty of Dentistry Instructor, 歯学部, 助手 (60199883)
NONAKA Kazuaki Kyushu University Faculty of Dentistry Assoc.Professor, 歯学部, 助教授 (90128067)
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| Project Period (FY) |
1989 – 1991
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| Project Status |
Completed (Fiscal Year 1991)
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| Budget Amount *help |
¥17,300,000 (Direct Cost: ¥17,300,000)
Fiscal Year 1991: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 1990: ¥6,200,000 (Direct Cost: ¥6,200,000)
Fiscal Year 1989: ¥9,400,000 (Direct Cost: ¥9,400,000)
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| Keywords | Oral-Facial Genetics / Growth / Twin study method / 歯顎顔面の遺伝 / 成長発育 / 双生児 |
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| Research Abstract |
The aim of this investigation was to search the genetic contribution to the growth of dento-facial complex. In order to accomplish this, the application of the twin study method is most efficient to detect the relative contribution of the heredity a13EA\ : nd the einvironment to the inter-individual variations among the sample population. In this study the dental casts and the roentogeno-cephalograms of the twins were collected from the Department of Pediatric Dentistry of Kyushu University Dental Hos13EA\ : pital and from the samples registred at the Department of Pedodontics of Tokyo Medical & Dental University school of Dentistry. The morphology of tooth crown and the dental arch were measured with the three dimensional procedure. The size and morpho13EA\ : logy of the cranio-facial complex was measured two-dimensionally. These data were feeded into the computer to keep the data file and to analyze the similarity of dento-facial growth of twins to compare between the identical twin pairs and the frater13EA\ : nal twin pairs.
As a results it is indicated that the dento-facial growth is strongly influenced by the genetic factors.
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