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- Publisher Website: 10.1089/pho.2015.3903
- Scopus: eid_2-s2.0-84931070641
- PMID: 26067942
- WOS: WOS:000363946400005
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Article: Efficacy of Needle, Ultrasonic, and Endoactivator Irrigation and Photon-Induced Photoacoustic Streaming in Removing Calcium Hydroxide from the Main Canal and Isthmus: An In Vitro Micro-Computed Tomography and Scanning Electron Microscopy Study
Title | Efficacy of Needle, Ultrasonic, and Endoactivator Irrigation and Photon-Induced Photoacoustic Streaming in Removing Calcium Hydroxide from the Main Canal and Isthmus: An In Vitro Micro-Computed Tomography and Scanning Electron Microscopy Study |
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Authors | |
Issue Date | 2015 |
Publisher | Mary Ann Liebert, Inc Publishers. The Journal's web site is located at http://www.liebertpub.com/lms |
Citation | Photomedicine and Laser Surgery, 2015, v. 33 n. 6, p. 330-337 How to Cite? |
Abstract | Objective: The aim of this in vitro study was to use high-resolution micro-computed tomography (micro-CT) and scanning electron microscopy (SEM) to compare the efficacy of four irrigation techniques [needle, ultrasonic, EndoActivator, and photon-induced photoacoustic streaming (PIPS)] in removing calcium hydroxide (Ca[OH]2) from the root canal and isthmus of maxillary premolars. Methods: Twenty-four maxillary first premolars were selected based on the presence of isthmus regions on micro-CT scans. Root canals were instrumented with an F2 file using ProTaper rotary instruments and filled with Ca(OH)2 paste. Samples were stored at 37°C and 100% humidity for 1 week and randomly divided into four groups (n=6 each), according to irrigation technique. Samples were scanned with micro-CT before instrumentation, after Ca(OH)2 filling, and after irrigation. Ca(OH)2 reduction in the coronal, middle, and apical thirds and in the isthmus were assessed with three-dimensional image analysis. Next, specimens were split longitudinally, and canal walls were examined with SEM for Ca(OH)2 residues. Data were statistically evaluated with the Kruskal–Wallis and Mann–Whitney tests (p=0.05). Results: The PIPS and ultrasonic groups showed greater Ca(OH)2 reduction in the apical third and higher cleanliness of the isthmus than the EndoActivator and needle irrigation groups (p<0.05). Ca(OH)2 residue scores in the PIPS and ultrasonic groups were significantly lower than those in the EndoActivator and needle groups in all regions of the root canals (p<0.05). There was no significant difference between PIPS and ultrasonic groups (p>0.05), or between EndoActivator and needle groups (p>0.05). Conclusions: PIPS and ultrasonic irrigation more effectively removed Ca(OH)2 from the main canal and isthmus in maxillary premolars than did EndoActivator or needle irrigation. |
Persistent Identifier | http://hdl.handle.net/10722/211674 |
ISSN | 2020 Impact Factor: 2.796 2020 SCImago Journal Rankings: 0.431 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Li, D | - |
dc.contributor.author | Jiang, SM | - |
dc.contributor.author | Yin, X | - |
dc.contributor.author | Chang, JWW | - |
dc.contributor.author | Ke, J | - |
dc.contributor.author | Zhang, C | - |
dc.date.accessioned | 2015-07-21T02:07:11Z | - |
dc.date.available | 2015-07-21T02:07:11Z | - |
dc.date.issued | 2015 | - |
dc.identifier.citation | Photomedicine and Laser Surgery, 2015, v. 33 n. 6, p. 330-337 | - |
dc.identifier.issn | 1549-5418 | - |
dc.identifier.uri | http://hdl.handle.net/10722/211674 | - |
dc.description.abstract | Objective: The aim of this in vitro study was to use high-resolution micro-computed tomography (micro-CT) and scanning electron microscopy (SEM) to compare the efficacy of four irrigation techniques [needle, ultrasonic, EndoActivator, and photon-induced photoacoustic streaming (PIPS)] in removing calcium hydroxide (Ca[OH]2) from the root canal and isthmus of maxillary premolars. Methods: Twenty-four maxillary first premolars were selected based on the presence of isthmus regions on micro-CT scans. Root canals were instrumented with an F2 file using ProTaper rotary instruments and filled with Ca(OH)2 paste. Samples were stored at 37°C and 100% humidity for 1 week and randomly divided into four groups (n=6 each), according to irrigation technique. Samples were scanned with micro-CT before instrumentation, after Ca(OH)2 filling, and after irrigation. Ca(OH)2 reduction in the coronal, middle, and apical thirds and in the isthmus were assessed with three-dimensional image analysis. Next, specimens were split longitudinally, and canal walls were examined with SEM for Ca(OH)2 residues. Data were statistically evaluated with the Kruskal–Wallis and Mann–Whitney tests (p=0.05). Results: The PIPS and ultrasonic groups showed greater Ca(OH)2 reduction in the apical third and higher cleanliness of the isthmus than the EndoActivator and needle irrigation groups (p<0.05). Ca(OH)2 residue scores in the PIPS and ultrasonic groups were significantly lower than those in the EndoActivator and needle groups in all regions of the root canals (p<0.05). There was no significant difference between PIPS and ultrasonic groups (p>0.05), or between EndoActivator and needle groups (p>0.05). Conclusions: PIPS and ultrasonic irrigation more effectively removed Ca(OH)2 from the main canal and isthmus in maxillary premolars than did EndoActivator or needle irrigation. | - |
dc.language | eng | - |
dc.publisher | Mary Ann Liebert, Inc Publishers. The Journal's web site is located at http://www.liebertpub.com/lms | - |
dc.relation.ispartof | Photomedicine and Laser Surgery | - |
dc.rights | Final publication is available from Mary Ann Liebert, Inc., publishers http://dx.doi.org/10.1089/pho.2015.3903 | - |
dc.title | Efficacy of Needle, Ultrasonic, and Endoactivator Irrigation and Photon-Induced Photoacoustic Streaming in Removing Calcium Hydroxide from the Main Canal and Isthmus: An In Vitro Micro-Computed Tomography and Scanning Electron Microscopy Study | - |
dc.type | Article | - |
dc.identifier.email | Chang, JWW: changww@hku.hk | - |
dc.identifier.email | Zhang, C: zhangcf@hku.hk | - |
dc.identifier.authority | Chang, JWW=rp00046 | - |
dc.identifier.authority | Zhang, C=rp01408 | - |
dc.identifier.doi | 10.1089/pho.2015.3903 | - |
dc.identifier.pmid | 26067942 | - |
dc.identifier.scopus | eid_2-s2.0-84931070641 | - |
dc.identifier.hkuros | 244438 | - |
dc.identifier.volume | 33 | - |
dc.identifier.issue | 6 | - |
dc.identifier.spage | 330 | - |
dc.identifier.epage | 337 | - |
dc.identifier.isi | WOS:000363946400005 | - |
dc.publisher.place | United States | - |
dc.identifier.issnl | 1549-5418 | - |