Abstract
Aim: Microleakage is one of the causes of failure of composite restorations that influenced many factors. The aim of this in-vitro study is to evaluate the effect of composite volume and rapid curing on microleakage of composite restorations.
Materials and Methods: 168 bovine incisors were randomly divided into 12 groups. Cylindrical cavities of 3 different diameters (2, 3 and 4 mm) and 2 different depths (1 and 2 mm) were prepared in the middle of the buccal surfaces of the teeth. The cavities were restored with a 7th generation adhesive system and micro-hybrid composite resin. Six of the groups were cured at 1000 mW/cm2 light power, while the other 6 groups were cured at 3200 mW/cm2. The restored teeth were immersed in 1% methylene blue solution for 24 hours. Then, the teeth were cut vertically to pass through the center of the restorations. The amount of microleakage was examined under a microscope. Data was analyzed with One-way Anova, Tukey and t tests (p=0.05).
Results: The highest average microleakage scores at the incisal margin were observed in the 3x2 mm sized cavities cured at 3200 mW/cm2 light power and in the 4x2 mm sized cavities cured at 1000 mW/cm light power (mean score= 0.86, p>0.05). The highest mean microleakage score at the gingival margin was observed in the 3x2 mm sized cavities cured at 1000 mW/cm light power (mean score: 1.43, p>0.05).
Conclusion: Considering the Pi value as 3.14, rapid polymerization of composite restorations with 3200 mW/cm2 power, a volume of 3.14 mm3 to 25.12 mm3 does not affect microleakage.
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Details
| Primary Language | English |
|---|---|
| Subjects | Restorative Dentistry |
| Journal Section | RA |
| Authors | |
| Publication Date | September 30, 2025 |
| Submission Date | February 21, 2025 |
| Acceptance Date | April 21, 2025 |
| Published in Issue | Year 2025 Volume: 28 Issue: 3 |
Cumhuriyet Dental Journal (Cumhuriyet Dent J, CDJ) is the official publication of Cumhuriyet University Faculty of Dentistry. CDJ is an international journal dedicated to the latest advancement of dentistry. The aim of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of dentistry. First issue of the Journal of Cumhuriyet University Faculty of Dentistry was published in 1998. In 2010, journal's name was changed as Cumhuriyet Dental Journal. Journal’s publication language is English.
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