File Download

There are no files associated with this item.

  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Coolant effectiveness in dental cutting with air-turbine handpieces.

TitleCoolant effectiveness in dental cutting with air-turbine handpieces.
Authors
Issue Date2012
Citation
The New Zealand Dental Journal, 2012, v. 108 n. 1, p. 25-29 How to Cite?
AbstractTo establish a strategy for evaluating coolant effectiveness and to compare typical cooling conditions used in dental cutting. A test system comprising a resistive heat source and an array of four type K thermocouples was used to compare the cooling effectiveness of air alone, water stream alone, and an air-water spray, as delivered by representative air-turbine handpieces. Mean temperature change at the four sites was recorded for a range of water flow rates in the range 10 to 90 mL min(-1), with and without air, and with and without the turbine running. The thermal resistance of the system, R, was calculated as the temperature change per watt (KW(-1)). For wet cooling (water stream and air-water spray), R was 5.1 to 11.5 KW(-1), whereas for air coolant alone the range was 18.5 to 30.7 KW(-1). R for air-water spray was lower than for water stream cooling at the same flow rate. The thermal resistivity approach is a viable means of comparative testing of cooling efficacy in simulated dental cutting. It may provide a reliable means of testing handpiece nozzle design, thus enabling the development of more efficient cooling.
Persistent Identifierhttp://hdl.handle.net/10722/154724
ISSN
2014 SCImago Journal Rankings: 0.203

 

DC FieldValueLanguage
dc.contributor.authorLeung, BTen_HK
dc.contributor.authorDyson, JEen_HK
dc.contributor.authorDarvell, BWen_HK
dc.date.accessioned2012-08-08T08:27:08Z-
dc.date.available2012-08-08T08:27:08Z-
dc.date.issued2012en_HK
dc.identifier.citationThe New Zealand Dental Journal, 2012, v. 108 n. 1, p. 25-29en_HK
dc.identifier.issn0028-8047en_HK
dc.identifier.urihttp://hdl.handle.net/10722/154724-
dc.description.abstractTo establish a strategy for evaluating coolant effectiveness and to compare typical cooling conditions used in dental cutting. A test system comprising a resistive heat source and an array of four type K thermocouples was used to compare the cooling effectiveness of air alone, water stream alone, and an air-water spray, as delivered by representative air-turbine handpieces. Mean temperature change at the four sites was recorded for a range of water flow rates in the range 10 to 90 mL min(-1), with and without air, and with and without the turbine running. The thermal resistance of the system, R, was calculated as the temperature change per watt (KW(-1)). For wet cooling (water stream and air-water spray), R was 5.1 to 11.5 KW(-1), whereas for air coolant alone the range was 18.5 to 30.7 KW(-1). R for air-water spray was lower than for water stream cooling at the same flow rate. The thermal resistivity approach is a viable means of comparative testing of cooling efficacy in simulated dental cutting. It may provide a reliable means of testing handpiece nozzle design, thus enabling the development of more efficient cooling.en_HK
dc.languageengen_US
dc.relation.ispartofThe New Zealand dental journalen_HK
dc.subject.meshAiren_US
dc.subject.meshCold Temperatureen_US
dc.subject.meshDental High-Speed Equipment - Standardsen_US
dc.subject.meshDiamond - Chemistryen_US
dc.subject.meshEquipment Designen_US
dc.subject.meshFlowmetersen_US
dc.subject.meshHumansen_US
dc.subject.meshHydrodynamicsen_US
dc.subject.meshRheology - Instrumentationen_US
dc.subject.meshTemperatureen_US
dc.subject.meshThermal Conductivityen_US
dc.subject.meshWater - Chemistryen_US
dc.titleCoolant effectiveness in dental cutting with air-turbine handpieces.en_HK
dc.typeArticleen_HK
dc.identifier.emailDyson, JE: jdyson@hkucc.hku.hken_HK
dc.identifier.emailDarvell, BW: b.w.darvell@hku.hken_HK
dc.identifier.authorityDyson, JE=rp00003en_HK
dc.identifier.authorityDarvell, BW=rp00007en_HK
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.pmid22439318en_HK
dc.identifier.scopuseid_2-s2.0-84860807004en_HK
dc.identifier.volume108en_HK
dc.identifier.issue1en_HK
dc.identifier.spage25en_HK
dc.identifier.epage29en_HK
dc.publisher.placeNew Zealanden_HK
dc.identifier.scopusauthoridLeung, BT=55212785500en_HK
dc.identifier.scopusauthoridDyson, JE=23089868600en_HK
dc.identifier.scopusauthoridDarvell, BW=7005953926en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats