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KMID : 0362420080460020105
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Journal of Korean Academy of Prosthodontics
2008 Volume.46 No. 2 p.105 ~ p.115
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Comparative study of surface roughness between several finishing and polishing procedures on ormocer-based composite resin and nanohybrid composite resin
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Jeong Suk-In
Oh Nam-Sik
Lee Myung-Hyun
Cho Jeong-Hyun
Lee Eun-Jeong
Ji Sung-Won
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Abstract
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Statement of problem: Proper finishing and polishing enhance both the esthetics and the longevity of restored teeth. Blade finishing technique would be suited for smoothing and finishing. Evaluation of this technique are necessary.
Purpose: The purpose of this study was to evaluate the blade finishing and polishing procedures on the surface profile and roughness of ormocer-based composite resin and nanohybrid composite resin.
Material and methods: The material included a ormocer-based composite resin (Admira & Admira Flow); a nanohybrid composite resin (Grandio & Grandio Flow). One hundred forty specimens of each group were prepared using a mylar strip and randomly divied into blade finishing and rubber polishing groups (n=10). The average surface roughness (Ra) in micrometers was measured and the surface profile was examined by scanning electron microscopy (SEM) (Magnification × 200). The data were analyzed by Mann-Whitney Test at 0.05 significance level.
Conclusion: The results of this study indicated that the mylar strip produced the smoothest surface on all materials and among the finishing-polishing methods was not significanct difference (P>0.05). Ormocer-based flowable composite resin performedthe lowest variability in initial surface roughness among the tested materials.
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KEYWORD
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Surface roughness, Blade finishing, Ormocer-based composite resin, Nanohybrid composite resin
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