Bahar ZİNCİR, Elif ŞENAY, Ece ÖZTOPRAK, Levent ÖZER

In-Vitro Bond Strength of a Flowable Compomer to Primary Teeth Dentin with Different Applying Techniques

Purpose: The study aimed to investigate the effect of applying flowable compomer using different techniques and long-term water storage on microtensile bond strength (µTBS) to primary teeth dentin and present a comparison with packable compomer. Materials and methods: 90 primary molars were used to evaluate the µTBS of the materials. Specimens were randomly divided into 3 main groups for restoration: Group 1 and 4, compomer (Glasiosite, VOCO GmbH, Cuxhaven, Germany) filling alone; Group 2 and 5, flowable compomer (Twinky Star Flow, VOCO GmbH, Cuxhaven, Germany) lining/pre-cured and overlaying compomer; and Group 3 and 6, flowable compomer lining/co-cured with overlaying compomer. All specimens were thermocycled (500X), after which half of them (n=45) were stored in distilled water for 24 h (Group A: Groups 1-3), and the remaining half (n=45) for 24 months (Group B: Groups 4-6). Samples were tested for µTBS (1 mm/min) with a microtensile testing machine (T 61010 Ki, Bisco, Schaumburg, USA). Failure modes were determined with the aid of a stereomicroscope. Results were analyzed using the Kruskal-Wallis H test. Results: There was no statistically significant difference between the groups regarding bond strength (p>0.05). Mixed cohesive failure of both adhesive and dentin was the most common type of failure in all groups (p<0.05). 2-year water storage significantly decreased the bond strength for all groups (p<0.05). Conclusion: Flowable compomers applied using different techniques produced similar bond strength to dentin compared to compomer. However, long-term water storage decreased bond strength significantly.

Keywords:

Flowable compomer, micro-tensile bond strength, primary teeth,

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European Annals of Dental Sciences-Cover

Yayın Aralığı: Yıllık
Başlangıç: 1972
Yayıncı: Ankara Üniversitesi

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