Dentinal surface roughness: a comparison of tooth preparation techniques.
Standardization of prepared dentinal surfaces for in vitro investigations is needed for evaluation of luting and bonding agents. Forty-eight intact, noncarious human molars were prepared either with silicon carbide paper mounted on a circular grinder or with carbide bur or a diamond mounted in a dental handpiece, and the dentinal surfaces were analyzed in a profilometer for surface roughness. The results were computed with a parametric ANOVA and Student-Newman-Keuls post hoc test. The dentinal surfaces prepared by Brasseler super coarse, coarse, medium, and Premier coarse diamonds by use of a high-speed dental handpiece with water spray were statistically different (p < 0.0001) but closely resembled a dentinal surface prepared by a 60-grit silicon carbide abrasive on a circular grinder. The fine diamonds resembled a prepared dentinal surface similar to a spectrum of SiC papers from 60 to 120 grits, whereas the carbide burs appeared to create various surfaces, depending on the manufacturer.
Department of Prosthodontics, University of Connecticut Health Center, School of Dental Medicine, Farmington.
J J
JJ
Wahle
S L
SL
Wendt
D002244:Carbon; D017554:Carbon Compounds, Inorganic; D003737:Dental Cavity Preparation / Q000295:instrumentation / Q000379:methods*; D003804:Dentin / Q000648:ultrastructure*; D018130:Diamond; D004867:Equipment Design; D005069:Evaluation Studies as Topic; D006801:Humans; D012825:Silicon; D017655:Silicon Compounds; D013499:Surface Properties
D017554:Carbon Compounds, Inorganic; D017655:Silicon Compounds; D002244:Carbon; D018130:Diamond; C022088:silicon carbide; D012825:Silicon