An evaluation of polymer rotary instruments' ability to remove healthy, non-carious dentine.
The aim of this study was to confirm that Smartprep burs do not cut non-carious, healthy dentine. Twenty non-carious extracted molars were trimmed with a diamond bur to remove enamel and to create a flat dentine surface. A new Smartprep bur (RA # 4) was applied to each tooth for 30 seconds. As a control, a new number three round stainless steel bur was applied to each tooth. The mean dentine loss was 4.25 mg (range 1.4 - 9 mg) for Smartprep burs and 12.21 mg (range 7.6 - 16.5 mg) for stainless steel burs. The Smartprep burs remove significantly less dentine than stainless steel burs.
Hauman
Catharina H J
CH
Department of Oral Rehabilitation, School of Dentistry, University of Otago, Dunedin, New Zealand. tina.hauman@stonebow.otago.ac.nz
Kuzmanovic
Dusan V
DV
D003737:Dental Cavity Preparation / Q000295:instrumentation*; D003754:Dental High-Speed Equipment; D003804:Dentin / Q000601:surgery*; D006801:Humans; D008963:Molar / Q000601:surgery; D011108:Polymers / Q000627:therapeutic use; D012399:Rotation
D011108:Polymers