Effect of the Insertion and Polymerization Technique in Composite Resin Restorations: Analysis of Marginal Gap by Atomic Force Microscopy
| Autor: | Lucineide de Melo Santos, Marcos Aurélio Bomfim da Silva, José Ivo Limeira dos Reis, José Ginaldo da Silva Júnior, Josealdo Tonholo, Guilherme José Pimentel Lopes de Oliveira |
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| Rok vydání: | 2010 |
| Předmět: |
Materials science
Enamel paint Composite number Polishing Microscopy Atomic Force Composite Resins law.invention stomatognathic diseases medicine.anatomical_structure Halogen lamp stomatognathic system Polymerization Buccal Surface law visual_art Bone Substitutes visual_art.visual_art_medium Dentin medicine Animals Cattle Composite material Dental Restoration Permanent Instrumentation Curing (chemistry) |
| Zdroj: | Microscopy and Microanalysis. 16:779-784 |
| ISSN: | 1435-8115 1431-9276 |
| DOI: | 10.1017/s1431927610093931 |
| Popis: | Thisin vitrostudy evaluated the marginal gap at the composite tooth/resin interface in class V cavities under the influence of two insertion techniques and a curing system by means of atomic force microscopy (AFM). Forty enamel and dentin cavities were prepared on the buccal surface in bovine teeth with quadratic forms measuring 2 mm × 2 mm and depth of 1.5 mm. The teeth were then divided into four groups: group A, 10 cavities were restored in one increment, light cured by halogen light; group B, 10 cavities filled with bulk filling, light cured by the light emitting diodes (LED); group C, 10 cavities were restored by the incremental technique, light cured by halogen light; group D, 10 cavities were restored by the incremental technique, light cured by the LED. The teeth underwent the polishing procedure and were analyzed by AFM for tooth/restoration interface evaluation. The data were compared between groups using the nonparametric Kruskall-Wallis and Mann-Whitney tests (p< 0.05). The results showed a statistically significant difference between groups A and B and groups A and C. It was concluded that no insertion and polymerization technique was able to completely seal the cavity. |
| Databáze: | OpenAIRE |
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