Microleakage reduction using glass-ceramic inserts.
Thirty human non-carious specimens were used in this in vitro study. The specimens were divided into three groups of 10 each: Group 1: incremental fill: Group 2: Beta-Quartz glass-ceramic inserts: Group 3: pre-cured resin composite inserts. All restorations were placed with TPH resin composite. The specimens were thermocycled and sectioned. Microleakage was determined on a scale of 0 (no microleakage) to 5 (microleakage extending to the axial wall). Results of the study indicated that Beta-Quartz glass-ceramic inserts and incrementally placed resin composite restorations exhibited significantly less microleakage compared to pre-cured resin composite inserts (P < .03, Chi-Square Test).
Godder
B
B
Division of Restorative and Prosthodontic Sciences, College of Dentistry, New York University.
Zhukovsky
L
L
Trushkowsky
R
R
Epelboym
D
D
D002516:Ceramics; D016009:Chi-Square Distribution; D003188:Composite Resins / Q000737:chemistry; D003763:Dental Leakage / Q000517:prevention & control*; D003793:Dental Restoration, Permanent / Q000379:methods*; D017220:Dentin-Bonding Agents; D005898:Glass; D006801:Humans; D008422:Materials Testing; D010316:Particle Size; D011791:Quartz; D012822:Silicon Dioxide
C088834:Beta-Quartz glass-ceramic; D003188:Composite Resins; D017220:Dentin-Bonding Agents; C088833:Prisma TPH resin composite; C062652:Prisma Universal Bond; D011791:Quartz; D012822:Silicon Dioxide