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In vitro evaluation of three curettes with edge retention technology after extended use


Sisera, M. In vitro evaluation of three curettes with edge retention technology after extended use. 2010, University of Zurich, Faculty of Medicine.

Abstract

This study assessed the edge cutting efficiency of three new curettes with different edge retention technologies after simulated wear in vitro. Three test curettes (two
with a titanium nitride coating and one without coating, but made of a cryogenically treated stainless steel alloy) were used to root plane prepared bovine dentin specimens.
Nine curettes of each type were used to instrument one dentin sample each. Dentin removal was determined after the first ten strokes and again cumulatively for the strokes 500–510 and 1,000–1,010 by means of atomic absorption
spectrophotometry (AAS). The effects of chemical and thermal stress were analysed after repeated disinfection and sterilization of the instruments then followed by a final 10-stroke sequence of dentin removal to determine
cutting efficacy. A standard, untreated stainless steel curette was used as a control. Test and control instruments showed no statistical evidence of diminished dentin removal
over 1010 strokes. Dentin surface roughness also displayed insignificant differences for all instruments. However, sterilization negatively affected the test and control instruments to an equal degree. Sterilization procedures appear to be an important factor in the dulling of
curettes, which affected dentin removal efficacy but not surface roughness.

Abstract

This study assessed the edge cutting efficiency of three new curettes with different edge retention technologies after simulated wear in vitro. Three test curettes (two
with a titanium nitride coating and one without coating, but made of a cryogenically treated stainless steel alloy) were used to root plane prepared bovine dentin specimens.
Nine curettes of each type were used to instrument one dentin sample each. Dentin removal was determined after the first ten strokes and again cumulatively for the strokes 500–510 and 1,000–1,010 by means of atomic absorption
spectrophotometry (AAS). The effects of chemical and thermal stress were analysed after repeated disinfection and sterilization of the instruments then followed by a final 10-stroke sequence of dentin removal to determine
cutting efficacy. A standard, untreated stainless steel curette was used as a control. Test and control instruments showed no statistical evidence of diminished dentin removal
over 1010 strokes. Dentin surface roughness also displayed insignificant differences for all instruments. However, sterilization negatively affected the test and control instruments to an equal degree. Sterilization procedures appear to be an important factor in the dulling of
curettes, which affected dentin removal efficacy but not surface roughness.

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Additional indexing

Item Type:Dissertation
Referees:Attin T, Schmidlin P
Communities & Collections:04 Faculty of Medicine > Center for Dental Medicine > Clinic for Preventive Dentistry, Periodontology and Cariology
Dewey Decimal Classification:610 Medicine & health
Uncontrolled Keywords:cutting edge attrition, dentin removal, surface roughness
Language:English
Date:2010
Deposited On:27 Oct 2010 13:13
Last Modified:11 Aug 2017 19:28
Number of Pages:11
Additional Information:Sisera, Massimiliano. - In vitro evaluation of three curettes with edge retention technology after extended use. - Zürich, 2010 Sonderdruck aus: Schweizerische Monatsschrift für Zahnmedizin. Bd. 119, no. 12, 2009, pp. 1200-1208
Official URL:http://www.sso.ch/index.cfm?uuid=C9408498AC9A297DE0BB6F150D28E8E4&&IRACER_AUTOLINK&&

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