Article: A laboratory evaluation of two brands of disposable air turbine handpiece

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TitleA laboratory evaluation of two brands of disposable air turbine handpiece
AuthorsDyson, JE1
Darvell, BW1
Issue Date1997
PublisherNature Publishing Group. The Journal's web site is located at http://www.bdj.co.uk
CitationBritish Dental Journal, 1997, v. 182 n. 1, p. 15-21 [How to Cite?]
AbstractObjective: To report on the essential performance characteristics of two brands of disposable air turbine handpiece and on aspects of their safety and convenience for clinical use. Materials and methods: Oralsafe and Feathertouch disposable handpieces were characterised using a variety of techniques in respect of the following: turbine rotor radius, equivalent orifice radius, stall torque coefficient, pressure effectiveness, power index, efficiency index, sound level and instrument retention force. Results: Free-running speed versus pressure curves for many of the disposable handpieces showed marked deviations from the expected smooth form. Considerable variation between examples of each type was found in most measured values. Evidence of eccentric rotors and high bearing friction was not found. Conclusions: Both brands of disposable handpiece had a number of problems: poor performance, vibration, excessive noise, variability of behaviour, poor bearings. Use of these devices is difficult to recommend. Improvement in design seems necessary.
ISSN0007-0610
2011 Impact Factor: 0.915
2011 SCImago Journal Rankings: 0.049
ISI Accession Number IDWOS:A1997WF67500015
ReferencesReferences in Scopus
DC Field
Value
dc.contributor.authorDyson, JE
dc.contributor.authorDarvell, BW
dc.date.accessioned2010-09-06T05:42:33Z
dc.date.available2010-09-06T05:42:33Z
dc.date.issued1997
dc.description.abstractObjective: To report on the essential performance characteristics of two brands of disposable air turbine handpiece and on aspects of their safety and convenience for clinical use. Materials and methods: Oralsafe and Feathertouch disposable handpieces were characterised using a variety of techniques in respect of the following: turbine rotor radius, equivalent orifice radius, stall torque coefficient, pressure effectiveness, power index, efficiency index, sound level and instrument retention force. Results: Free-running speed versus pressure curves for many of the disposable handpieces showed marked deviations from the expected smooth form. Considerable variation between examples of each type was found in most measured values. Evidence of eccentric rotors and high bearing friction was not found. Conclusions: Both brands of disposable handpiece had a number of problems: poor performance, vibration, excessive noise, variability of behaviour, poor bearings. Use of these devices is difficult to recommend. Improvement in design seems necessary.
dc.description.natureLink_to_subscribed_fulltext
dc.identifier.citationBritish Dental Journal, 1997, v. 182 n. 1, p. 15-21 [How to Cite?]
dc.identifier.epage21
dc.identifier.hkuros22605
dc.identifier.isiWOS:A1997WF67500015
dc.identifier.issn0007-0610
2011 Impact Factor: 0.915
2011 SCImago Journal Rankings: 0.049
dc.identifier.issue1
dc.identifier.openurl
dc.identifier.pmid9029807
dc.identifier.scopuseid_2-s2.0-0031564376
dc.identifier.spage15
dc.identifier.urihttp://hdl.handle.net/10722/65974
dc.identifier.volume182
dc.languageeng
dc.publisherNature Publishing Group. The Journal's web site is located at http://www.bdj.co.uk
dc.publisher.placeUnited Kingdom
dc.relation.ispartofBritish Dental Journal
dc.relation.referencesReferences in Scopus
dc.subject.meshAir Pressure
dc.subject.meshDental High-Speed Equipment
dc.subject.meshDisposable Equipment
dc.subject.meshEfficiency
dc.subject.meshElectric Power Supplies
dc.subject.meshEquipment Design
dc.subject.meshEvaluation Studies as Topic
dc.subject.meshPlastics
dc.subject.meshRotation
dc.subject.meshTorque
dc.subject.meshVibration
dc.titleA laboratory evaluation of two brands of disposable air turbine handpiece
dc.typeArticle
Author Affiliations
  1. Prince Philip Dental Hospital