Elucidation of interaction between tooth guide girdle and dental follicle related to tooth eruption and root resorption mechanism accompany with abnormal teeth eruption

2014 Fiscal Year Final Research Report

• Project/Area Number: 23593022
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Orthodontic/Pediatric dentistry
• Research Institution: Tokyo Medical and Dental University
• Principal Investigator: MATSUMOTO Yoshiro 東京医科歯科大学, 歯学部附属病院, 講師 (20292980)
• Co-Investigator(Kenkyū-buntansha): ONO Takashi 東京医科歯科大学, 大学院医歯学総合研究科, 教授 (30221857) ; KANEKO Sawa 東京医科歯科大学, 大学院医歯学総合研究科, 非常勤講師 (80372449) ; HOSOMICHI Jun 東京医科歯科大学, 大学院医歯学総合研究科, 講師 (00420258)
• Co-Investigator(Renkei-kenkyūsha): KANEKO Sawa 東京医科歯科大学, 大学院医歯学総合研究科, 非常勤講師 (80372449)
• Project Period (FY): 2011-04-28 – 2015-03-31
• Keywords: 生理的歯根吸収 / 乳歯 / 永久歯 / 歯胚 / 歯小嚢 / 歯根形成

Outline of Final Research Achievements

To clarify the physiological mechanism of permanent teeth eruption which leads to the elucidation of the pathological situation in the stage of anterior teeth exchange, various morphological examinations about the bovine deciduous teeth and succeeding permanent teeth in each developmental stage were performed.
As a result, resorption of the deciduous teeth by a permanent teeth germ was observed, and the structure considered to the tooth guide girdle with the alveolar bone socket of a deciduous tooth root and a succeeding permanent tooth germ in the alveolar bone space was also observed. Moreover, correlations between the amount of root resorption of deciduous tooth, the amount of alveolar bone resorption, the amount of succeeding permanent tooth root formation and the degree of tooth mobility were observed.

Free Research Field

歯科矯正学