Microleakage of a compomer compared to conventional and hybrid ionomers

• Autores: Aaron D. Puckett, James G. Fitchie, Leslie Karns, T.M. Dellinger, Christine C. Inman
• Localización: Quintessence International, ISSN-e 0033-6572, Vol. 32, Nº. 1, 2001, págs. 49-54
• Idioma: inglés
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• Resumen

  • Objective: This study measured and compared the in vitro microleakage behavior of a compomer restorative material, Dyract (LD Caulk); a conventional glass ionomer, Ketac-Fil (ESPE Premier); and a resin-modified glass ionomer, Fuji II LC (GC America). Method and materials: Class V preparations measuring 2 mm 3 3 mm 3 2 mm were cut at the cementoenamel junction on the facial surfaces of 30 freshly extracted bovine incisor teeth. The 30 teeth were randomly divided into 3 groups of 10 each, restored using the material of choice following the manufacturer's instructions, and placed in distilled water at 37°C. After 10 days' storage, the teeth were thermocycled between 4°C and 58°C for 100 cycles using a 1-minute dwell time, followed by a 2-hour immersion in Ca45 isotope. The teeth were sectioned longitudinally, wet-ground until smooth using 600 grit SiC paper, and placed on a radiographic film for 12 hours to produce autoradiographs. Microleakage was evaluated on a 0 (no microleakage) to 3 (gross microleakage) scale with separate scores for the incisal and gingival margins. Results: The results were analyzed using the Mann-Whitney U Test. Results showed no significant differences between groups at the incisal margin (P