Induced damage zone in micro-fine dental finishing of a feldspathic porcelain
| Autor: | Ling Yin, Xiao-Fei Song |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Dental ceramics
Materials science Scanning electron microscope Depth of cut Potassium Compounds Surface Properties Metallurgy Finite Element Analysis Biomedical Engineering Biophysics Diamond engineering.material Dental Porcelain Models Chemical Hardness visual_art Damage zone Elastic Modulus visual_art.visual_art_medium engineering Aluminum Silicates Computer Simulation Ceramic Stress Mechanical Surface integrity |
| Zdroj: | Medical engineeringphysics. 32(5) |
| ISSN: | 1873-4030 |
| Popis: | Intraoral adjustment of ceramic prostheses involving micro-finishing a feldspathic porcelain using very fine diamond burs was reported in Med Eng Phys 2008;30:856-864 with respect to finishing force, energy and surface integrity. The measured finishing forces were found to be very small. The remaining question is whether these small forces in the micro-dental finishing induced any subsurface damage to the porcelain. This paper addresses the finite element analysis (FEA) of the finishing-induced stresses and the depths of subsurface damage in micro-fine finishing. It also reports on the measurement of the subsurface damage using scanning electron microscopy (SEM). The results indicate that while finishing using fine diamond burs diminished subsurface damage, damage depths of smaller than 18 microm remained depending on the bur depth of cut and feed rate. These damages can only be minimized under very fine finishing conditions. |
| Databáze: | OpenAIRE |
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