The evaluation of the safety of dental implant treatment for the maxillary tuberosity area - Is dental implant treatment for the maxillary tuberosity area safe?

Research Project

Project/Area Number	25462936
Research Category	Grant-in-Aid for Scientific Research (C)
Allocation Type	Multi-year Fund
Section	一般
Research Field	Pathobiological dentistry/Dental radiology
Research Institution	The Nippon Dental University
Principal Investigator	YOSUE TAKASHI 日本歯科大学, 生命歯学部, 教授 (10167025)
Co-Investigator(Kenkyū-buntansha)	KAWAI Taisuke 日本歯科大学, 生命歯学部, 准教授 (30350143) ASAUMI Rieko 日本歯科大学, 生命歯学部, 講師 (30548243)
Project Period (FY)	2013-04-01 – 2016-03-31
Project Status	Completed (Fiscal Year 2015)
Budget Amount *help	¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000) Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000) Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000) Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywords	歯科放射線診断学 / インプラント / CBCT
Outline of Final Research Achievements	This study examined the safety of the dental implant treatment for the maxillary tuberosity area. The dry maxillae and the dissected cadaver maxillae were used and their CBCT images were acquired. From the CBCT images, the morphological bone characteristics of the maxillary tuberosity area in relation to the presence (dentate group) or absence (edentulous group) of the maxillary molar teeth were observed.The edentulous group showed the decreasing total bone quantity and the thinning of the cortical bone. Cadaver dissections revealed the nerves and vessels from the greater / lesser palatine canals had a variety and complex of distribution. The stress distributions around virtually placed implant to the tuberosity area were analyzed using FEM and the stereolithographic models around maxillary tuberosity were fabricated derived from CBCT datasets of the cadaver maxillae with an enough / decreased bone quantity around maxillary tuberosity.