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Volume 20 , Issue 2
March/April 2007

Pages 123124

Microleakage in Full-Crown All-Ceramic Restorations: Influence of Internal Surface Treatment, Silane Application, Alumina System, and Substrate

Angela Brys Osorio, MS / Guilherme Briao Camacho, PhD / Flavio F. Demarco, PhD / John M. Powers, PhD

PMID: 17455430

This study investigated the influence of internal surface treatment and margin location on the microleakage of 2 alumina-reinforced ceramic crown systems: In-Ceram (VITA Zahnfabrik) and Procera (Nobel Biocare). Full crowns were produced for each of the 2 systems (n = 24) in human premolars, with margins located in enamel and dentin, and luted with Single Bond and RelyX ARC (3M ESPE). Four internal ceramic treatments were tested: (1) aluminum oxide blasting (AO), (2) AO plus silane, (3) hydrofluoric acid etching (HF), and (4) HF plus silane. After thermal cycling, leakage was measured quantitatively. Statistical analysis (P < .05) showed higher leakage in dentin margins compared to enamel. In enamel, Procera showed greater leakage compared to In-Ceram. Generally, lower microleakage was observed for the AO plus silane treatment. Int J Prosthodont 2007;20:123124.

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