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- Publisher Website: 10.1111/jicd.12092
- Scopus: eid_2-s2.0-85019113559
- WOS: WOS:000214132900009
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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
Title | Effect Of Root Canal Dimensions, Injection Rate, And Needle Design On The Apical Extrusion Of An Irrigant: An In Vitro Study |
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Authors | |
Keywords | apical extrusion injection rate irrigant need design root canal injection |
Issue Date | 2015 |
Publisher | Wiley. 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, 2015, v. 6 n. 3, p. 221-227 How to Cite? |
Abstract | Aim: 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 Identifier | http://hdl.handle.net/10722/202462 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Chang, JWW | en_US |
dc.contributor.author | Cheung, AWT | en_US |
dc.contributor.author | Cheung, GSP | en_US |
dc.date.accessioned | 2014-09-19T07:50:42Z | - |
dc.date.available | 2014-09-19T07:50:42Z | - |
dc.date.issued | 2015 | en_US |
dc.identifier.citation | Journal of Investigative and Clinical Dentistry, 2015, v. 6 n. 3, p. 221-227 | en_US |
dc.identifier.uri | http://hdl.handle.net/10722/202462 | - |
dc.description.abstract | Aim: 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.language | eng | en_US |
dc.publisher | Wiley. The Journal's web site is located at http://www.wiley.com/bw/journal.asp?ref=2041-1618&site=1 | en_US |
dc.relation.ispartof | Journal of Investigative and Clinical Dentistry | en_US |
dc.subject | apical extrusion | - |
dc.subject | injection rate | - |
dc.subject | irrigant | - |
dc.subject | need design | - |
dc.subject | root canal injection | - |
dc.title | Effect Of Root Canal Dimensions, Injection Rate, And Needle Design On The Apical Extrusion Of An Irrigant: An In Vitro Study | en_US |
dc.type | Article | en_US |
dc.identifier.email | Chang, JWW: changww@hku.hk | en_US |
dc.identifier.email | Cheung, GSP: spcheung@hku.hk | en_US |
dc.identifier.authority | Chang, JWW=rp00046 | en_US |
dc.identifier.authority | Cheung, GSP=rp00016 | en_US |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1111/jicd.12092 | en_US |
dc.identifier.scopus | eid_2-s2.0-85019113559 | - |
dc.identifier.hkuros | 237567 | en_US |
dc.identifier.volume | 6 | en_US |
dc.identifier.issue | 3 | - |
dc.identifier.spage | 221 | en_US |
dc.identifier.epage | 227 | en_US |
dc.identifier.isi | WOS:000214132900009 | - |