Effects of flowable composite lining and operator experience on microleakage and internal voids in class II composite restorations
| Autor: | Shu Fen Chuang, Feng Pin Liao, Jia-Kuang Liu, Chen Chi Chao, Yea Huey Melody Chen |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Molar
Dental Leakage Void (astronomy) business.industry Surface Properties Viscosity Group ii Composite number Dental Cavity Lining Dentistry Dental Marginal Adaptation BASIC FUCHSIN Composite Resins Tetric ceram Dentin-Bonding Agents Flowable Composite Rosaniline Dyes Medicine Humans Thermodynamics Oral Surgery Tetric Flow business Dental Cavity Preparation Dental Restoration Permanent |
| Zdroj: | The Journal of prosthetic dentistry. 85(2) |
| ISSN: | 0022-3913 |
| Popis: | Statement of problem. When inexperienced clinicians perform class II composite restorations, improper placement techniques can lead to problems, including marginal adaptation and void formation. Purpose. The aim of this study was to determine the influence of flowable composite linings on marginal microleakage and internal voids in class II composite restorations performed by practitioners with different levels of experience. Material and methods. Eighty extracted molars were prepared with mesial and distal class II cavity preparations and divided into 4 groups. Each group was restored separately with the following materials: Prodigy/Revolution lining (group I), Prodigy (group II), Tetric Ceram/Tetric Flow lining (group III), and Tetric Ceram (group IV). Each group was equally divided and restored by 2 practitioners, one experienced and another untrained in composite restorations. After restoration, all teeth were stored for 24 hours, thermocycled (at 5°C to 60°C) 1500 times, and soaked in 2% basic Fuchsin dye for 24 hours. After soaking, the teeth were sectioned, and gingival marginal microleakage and internal voids (at the gingival wall interface and in the cervical and the occlusal parts) were recorded. Data were analyzed with the Kruskal-Wallis test. Results. There was no significant reduction in microleakage for either practitioner. There were fewer interface voids within pairs with or without flowable composite linings made by the experienced practitioner (P |
| Databáze: | OpenAIRE |
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