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Article: Effect Of Root Canal Dimensions, Injection Rate, And Needle Design On The Apical Extrusion Of An Irrigant: An In Vitro Study

TitleEffect Of Root Canal Dimensions, Injection Rate, And Needle Design On The Apical Extrusion Of An Irrigant: An In Vitro Study
Authors
Issue Date2014
PublisherWiley. The Journal's web site is located at http://www.wiley.com/bw/journal.asp?ref=2041-1618&site=1
Citation
Journal of Investigative and Clinical Dentistry (In press), 2014 How to Cite?
AbstractAim: The purpose of this study was to determine the effect of root canal dimensions, type of needle, and injection rate on the apical extrusion of an irrigant in a simulated root canal. Methods: Ten students used two types of 28-gauge needles, to deliver 3 mL irrigant solution into artificial canals prepared in acrylic blocks to a standard size of ISO 25, 30, or 40 (0.06 taper; n = 10). Each block was preweighed to the nearest microgram before and after irrigation once the canal was dried with paper points. This was repeated with a syringe pump at a flow rate of 50, 100, 200 or 300 lL/s with the needle inserted to a standard depth. Results: Significant differences were observed between the side-vented and notched-end needles when the rate of irrigation was higher than 100 lL/s, and when the apical size was below ISO 40 (P < 0.001). The amount of extrusion was more variable and significantly higher when irrigation was performed manually, compared with the syringe pump groups. Conclusions: Injection rates above 100 lL/s increased the risk of extrusion, whereas increasing the apical canal size to ISO 40 reduced the amount of extrusion in all groups. The use of a side-vented needle negates the injectionrate effects.
Persistent Identifierhttp://hdl.handle.net/10722/202462

 

DC FieldValueLanguage
dc.contributor.authorChang, JWWen_US
dc.contributor.authorCheung, AWTen_US
dc.contributor.authorCheung, GSPen_US
dc.date.accessioned2014-09-19T07:50:42Z-
dc.date.available2014-09-19T07:50:42Z-
dc.date.issued2014en_US
dc.identifier.citationJournal of Investigative and Clinical Dentistry (In press), 2014en_US
dc.identifier.urihttp://hdl.handle.net/10722/202462-
dc.description.abstractAim: The purpose of this study was to determine the effect of root canal dimensions, type of needle, and injection rate on the apical extrusion of an irrigant in a simulated root canal. Methods: Ten students used two types of 28-gauge needles, to deliver 3 mL irrigant solution into artificial canals prepared in acrylic blocks to a standard size of ISO 25, 30, or 40 (0.06 taper; n = 10). Each block was preweighed to the nearest microgram before and after irrigation once the canal was dried with paper points. This was repeated with a syringe pump at a flow rate of 50, 100, 200 or 300 lL/s with the needle inserted to a standard depth. Results: Significant differences were observed between the side-vented and notched-end needles when the rate of irrigation was higher than 100 lL/s, and when the apical size was below ISO 40 (P < 0.001). The amount of extrusion was more variable and significantly higher when irrigation was performed manually, compared with the syringe pump groups. Conclusions: Injection rates above 100 lL/s increased the risk of extrusion, whereas increasing the apical canal size to ISO 40 reduced the amount of extrusion in all groups. The use of a side-vented needle negates the injectionrate effects.en_US
dc.languageengen_US
dc.publisherWiley. The Journal's web site is located at http://www.wiley.com/bw/journal.asp?ref=2041-1618&site=1en_US
dc.relation.ispartofJournal of Investigative and Clinical Dentistryen_US
dc.titleEffect Of Root Canal Dimensions, Injection Rate, And Needle Design On The Apical Extrusion Of An Irrigant: An In Vitro Studyen_US
dc.typeArticleen_US
dc.identifier.emailChang, JWW: changww@hku.hken_US
dc.identifier.emailCheung, GSP: spcheung@hku.hken_US
dc.identifier.authorityChang, JWW=rp00046en_US
dc.identifier.authorityCheung, GSP=rp00016en_US
dc.identifier.doi10.1111/jicd.12092en_US
dc.identifier.hkuros237567en_US
dc.identifier.volume5en_US
dc.identifier.spage1en_US
dc.identifier.epage7en_US

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