CVD DIAMOND TIPS are newer instruments used in dental practice for conservative cavity preparation.
chemical vapor deposition (CVD)- coated diamond tips adaptable to conventional ultrasound devices are developed by brazilian company.
These tips are manufactured by the deposition of continuous diamond coatings onto molybdenum shafts in an excess hydrogen environment.
After some physicochemical interactions, a pure diamond film is covalently formed on metal surface and strongly adhered to the shaft without metallic binder between the crystals.
CVD diamond TIPS are also applied in endodontic practice for apicoectomy and root end cavity preparation.
the ultrasoundactivated CVD-coated tips produced rough root-end surfaces probably because the longer time required for ultrasonic root-end resection makes it difficult to maintain a uniform and continuous cutting, IN CONTRAST TO CARBIDE BURS WHICH produce smoother and more regular root-end surfaces
the use of the ultrasonic tip in the analysis of the cutting time, ultrasonic root-end resection took the longest time to be performed, which discourages its indication as the main choice for apicoectomy.
ultrasonic root-end resection WITH CVD DIAMOND TIPS took a longer time and resulted in rougher surfaces compared with the use of carbide burs at both high and low speeds.
REFERENCE
Braz Oral Res 2006;20:155– 61.
Braz Oral Res 2006;20:155– 61.
JOE — Volume 35, Number 2, February 2009
