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- Title
Microleakage of a compomer compared to conventional and hybrid ionomers.
- Authors
Puckett, Aaron D.; Fitchie, James C.; Karns, Leslie; Dellinger, Tracy M.; Inman, Christine C.
- Abstract
Objective: This study measured and compared the in vitro microleakage behavior of a compomer restora- tive 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 mm × 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 ≤ 0.10). At the gingival margin, the mean leakage score for Dyract was significantly greater than Fuji II LC and Ketac-Fil (P = 0.08 and P = 0.06, respectively). Conclusion: These results suggest that this new compomer composition may not be as effective as conventional and hybrid ionomers at sealing gingival margins in Class V restorations.
- Subjects
DENTAL fillings; DENTAL glass ionomer cements; DENTAL resins; DISTILLED water; DENTAL radiography; ISOTOPES; GINGIVA; DENTAL acid etching; POLYMERIZATION
- Publication
Quintessence International, 2001, Vol 32, Issue 1, p49
- ISSN
0033-6572
- Publication type
Article