IADR Abstract Archives
Microfiltration Of Immediate Sealing Of Universal Adhesive And Resin Flow
Objectives: Compare the percentage of marginal microleakage of immediate dentin sealing (IDS) with universal adhesive+resin flow and Optidbond FL adhesive in indirect resin luting with self-adhesive cement.
Methods: 56 human molars were used after disinfection and preservation. On each tooth two-cavity preparations (occlusal-mesial and occlusal-distal) standardized 3x3x3 mm in depth, mesiodistal width, and length. Immediately after the preparations were randomly divided into 3 groups. Group SS: Negative control (without IDS), Group OBF: (Optibond FL- Kerr Orange, USA) and Group AU+F: Single Bond Universal (3M-Espe, USA) + layer of resin flow (Revolution Formula 2, Kerr-USA). In each tooth, the SS group was used in one cavity and the OBF or AU+F group in the other. The teeth were stored in distilled water for 48 hours and to perfomed the indirect resins with Filtek Z250 (3M-ESPE, USA). Were cemented with Relyx U200 (3M-ESPE, USA). All procedures were performed according to the manufacturer's instructions and using a light-curing unit calibrated at 1000 Mw/cm2 (Bluephase G2, Ivoclar-Vivadent, Liechtenstein). The samples were stored in water for 72 hours and subjected to 500 cycles between 5-50 C, stained with methylene blue for 24 hours and cut in half to evaluate the percentage of microfiltration. The samples were evaluated with a 4x magnifying glass (Micrometrics SE Premium, Accu-Scope-USA). Data were analyzed through Kruskal Wallis and Mann-Whitney tests with for significant differences at a 95% confidence level.
Results: The mean, median, and standard deviation (±) respectively for the groups were; SS: 72.8, 100.0 (± 35.3); OBF: 48.3, 33.0 ( ± 33.0) and AU + F: 23.8, 13.5 ( ± 31.6). There were statistically significant differences in the 3 groups (p <0.05).
Conclusions: There was less marginal microfiltration in the IDS group with AU + F compared to OBF and SS in the cementation of indirect resins with self-adhesive cement.
Methods: 56 human molars were used after disinfection and preservation. On each tooth two-cavity preparations (occlusal-mesial and occlusal-distal) standardized 3x3x3 mm in depth, mesiodistal width, and length. Immediately after the preparations were randomly divided into 3 groups. Group SS: Negative control (without IDS), Group OBF: (Optibond FL- Kerr Orange, USA) and Group AU+F: Single Bond Universal (3M-Espe, USA) + layer of resin flow (Revolution Formula 2, Kerr-USA). In each tooth, the SS group was used in one cavity and the OBF or AU+F group in the other. The teeth were stored in distilled water for 48 hours and to perfomed the indirect resins with Filtek Z250 (3M-ESPE, USA). Were cemented with Relyx U200 (3M-ESPE, USA). All procedures were performed according to the manufacturer's instructions and using a light-curing unit calibrated at 1000 Mw/cm2 (Bluephase G2, Ivoclar-Vivadent, Liechtenstein). The samples were stored in water for 72 hours and subjected to 500 cycles between 5-50 C, stained with methylene blue for 24 hours and cut in half to evaluate the percentage of microfiltration. The samples were evaluated with a 4x magnifying glass (Micrometrics SE Premium, Accu-Scope-USA). Data were analyzed through Kruskal Wallis and Mann-Whitney tests with for significant differences at a 95% confidence level.
Results: The mean, median, and standard deviation (±) respectively for the groups were; SS: 72.8, 100.0 (± 35.3); OBF: 48.3, 33.0 ( ± 33.0) and AU + F: 23.8, 13.5 ( ± 31.6). There were statistically significant differences in the 3 groups (p <0.05).
Conclusions: There was less marginal microfiltration in the IDS group with AU + F compared to OBF and SS in the cementation of indirect resins with self-adhesive cement.