Effect of Sterilization (Autoclave) on Wear of Tungsten-Carbide Burs Coated With Diamond Particles With Different Thicknesses

Background: Extending the lifespan and improving physical properties of dental burs as most extensivly used instruments have been subject several studies. One proposed methods is using surface coatings for burs. Since are reused, they require sterilization. possible causes damage to autoclaving process. This study aimed investigate sterilization (autoclave) effect on wear diamond coated tungsten-carbide with different thicknesses. Methods: In this in vitro study, 40 (IQ DENT, Poznan, Poland) were selected, out which 20 1.5-?m-like particles, 3.5-?m by PVD method Swin Plasma Coating Machine. Then, randomly divided into four groups (n=10) follow: G1: 1.5 ?m thickness without sterilization; G2: 3.5 G3: G4: 3.5?m Their weights measured before test.Wear test was performed then re-weighted. Data analyzed SPSS software (version 21) well Two-way ANOVA Tukey HSD supplementary tests (?=0.05). Results: Mean standard deviation control 7.31±2.63 7.96±1.61 mg, respectively; mean 7.06±0.98 7.12±1.11 respectively. The results showed that "sterilization application" "thickness layer" main factors their intraction had no statistically significant difference (P=0.589). Conclusions: process