Attritional wear and abrasive surface alterations of composite resin materials in vitro
| Autor: | Till N. Göhring, M.J Besek, Patrick R. Schmidlin |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Abrasion (dental)
Materials science Composite number Resin-Based Composite Composite Resins Dental Restoration Wear Dental porcelain stomatognathic system Materials Testing medicine Humans Composite material Dental Enamel General Dentistry Analysis of Variance Enamel paint Inlay Abrasive Tooth Attrition medicine.disease Dental Porcelain Tooth Abrasion Glass Ionomer Cements Inlays visual_art Microscopy Electron Scanning visual_art.visual_art_medium Gold Alloys Methacrylates Silicate Cement |
| Zdroj: | Journal of Dentistry. 30:119-127 |
| ISSN: | 0300-5712 |
| DOI: | 10.1016/s0300-5712(02)00007-6 |
| Popis: | Objectives. A laboratory study was performed with 232 specimens and 72 human enamel, 24 gold, 24 ceramic and 12 composite antagonists in 22 groups to test attritional and abrasive wear behavior of composite materials compared to wear behavior of human enamel. Methods. Belleglass HP, Concept Inlay/Onlay, Targis and Targis Upgrade 99 composite resin for lab-made restorations was tested as well as Tetric Ceram and FHC Merz light as resins for direct restorations. Natural human enamel specimens served as control. All specimens were subjected to long-term thermo-mechanical loading in a computer-controlled masticator, chemical degradation and toothbrush/toothpaste abrasion. Wear of specimen in occlusal contact area (OCA), contact-free occlusal area and wear of natural enamel cusps as well as antagonists made of gold, ceramic and composite in identical form was measured after 120,000, 240,000, 640,000 and 1200,000 load cycles. A qualitative SEM analysis was performed to support quantitative data. Results. Belleglass HP and Targis Upgrade 99 restorative materials showed wear resistance comparable to human enamel when loaded with enamel cusps. Wear of Targis versus composite and gold antagonists was significantly higher (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect