2010 Fiscal Year Final Research Report

Clinical evaluation of adhesive Y-TZP FPD.

Research Project

Project/Area Number	21791842
Research Category	Grant-in-Aid for Young Scientists (B)
Allocation Type	Single-year Grants
Research Field	Conservative dentistry
Research Institution	Tokyo Medical and Dental University
Principal Investigator	KAZAMA Ryuunosuke Tokyo Medical and Dental University -> 東京医科歯科大学, 大学院・医歯学総合研究科, 非常勤講師 (50387429)
Project Period (FY)	2009 – 2010
Keywords	CAD / CAM / 破折強度 / 表面処理 / セラミックス
Research Abstract	24CAD/CAM ceramic inlay was fabricated, and their inside surface was treated with either 37%phosphoric acid, 5% hydrofluoric acid or water (n=8, each). All specimens were luted with a resin cement, and fracture load values (N) were measured. Hydrofluoric acid increased the surface roughness, but did not increase the fracture resistance. 40 plates from four brands of ceramic materials were either surface-polished or overglazed (n=10), and bonded to dentin using a resin cement, and failure load (N) were measured. It was concluded that overglazed and polished surfaces produced similar compressive fracture strengths irrespective of the machinable ceramic material tested, and that fracture strength was material-dependent.

(4 results)