Abstract

ABORASS, M; PECK, MT  and  HOLMES, H. Effect of diamond-like carbon coating on implant drill wear during implant site preparation. S. Afr. dent. j. [online]. 2018, vol.73, n.4, pp.189-191. ISSN 0375-1562.

Dental implant drills are made of different materials such as stainless steel (SS), zirconia and ceramic. Diamond-like carbon (DLC) coating has been added to increase the cutting efficiency and wear resistance. Aim: To determine the impact of DLC coating on dental implant drill wear after implant site preparation. OBJECTIVES: To determine: a. drilling times b. geometric features and chisel Integrity of drills with different surfaces after repeated use. Methods and Materials: 13 pilot drills were sourced from different manufacturers, providing five groups for testing. The drills were sequentially attached to a hand piece fitted to a drill press and used 20 times, drilling to a depth of 10mm in artificial bone. Drilling times were recorded with a digital stopwatch. SEM images were taken of the bur before and after 0, 5, 10, 15 and 20 penetrations. Results: No significant differences in drilling times were detected. The drills showed signs of wear, while coating delamination was detected in DLC coated drills. Conclusion: No significant differences in drilling times were found. SEM images showed that most of the drills revealed signs of wear after 20 uses.

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