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- Title
Bacterial Leakage Through Temporary Fillings in Core Buildup Composite Material -- An In Vitro Study.
- Authors
Rechenberg, Dan-Krister; Schriber, Martina; Attin, Thomas
- Abstract
Purpose: To evaluate the ability of the provisional filling material Cavit-W alone or in combination with different restorative materials to prevent bacterial leakage through simulated access cavities in a resin buildup material. Materials and Methods: LuxaCore resin cylinders were subdivided into 4 experimental groups (n = 30), plus a positive (n = 5) and a negative (n = 30) control group. One bore hole was drilled through each cylinder, except those in the negative control group (G1). The holes were filled with Cavit-W (G2), Cavit-W and Ketac-Molar (glass- ionomer cement, G3), Cavit-W and LuxaCore bonded with LuxaBond (G4), Cavit-W and LuxaCore (G5), or left empty (G6). Specimens were mounted in a two-chamber leakage setup. The upper chamber was inoculated with E. faecalis. An enterococci-selective broth was used in the lower chamber. Leakage was assessed for 60 days and compared using Fisher's exact test ( < 0.05) corrected for multiple testing. Results: Bacteria penetrated specimens in the positive control group within 24 h. All specimens in the negative control group resisted bacterial leakage for 60 days. Twenty-seven specimens in G2, 26 in G3, and 16 specimens in G5 showed bacterial leakage by the end of the experiment. G4 prevented bacterial penetration completely. The statistical comparison revealed significant differences between G4 and all other experimental groups. Conclusion: Under the current conditions, Cavit-W alone or combined with a glass-ionomer cement did not prevent bacterial leakage through a resin buildup material for two months. In contrast, covering Cavit-W with a bonded resin material resulted in a bacteria-tight seal for two months.
- Subjects
DENTAL research; DENTAL fillings; COMPOSITE materials research; OPERATIVE dentistry; DENTAL amalgams; MICROLEAKAGE (Dentistry); INLAYS (Dentistry)
- Publication
Journal of Adhesive Dentistry, 2012, Vol 14, Issue 4, p371
- ISSN
1461-5185
- Publication type
Article
- DOI
10.3290/j.jad.a22709