Fracture Strength of Tooth Roots following Canal Preparation by Hand and Rotary Instrumentation
The study aimed to determine fracture loads in tooth roots after canal preparation using different techniques. Mesiobuccal roots of 39 extracted mandibular molars were used. Three groups each of 13 roots were prepared by stainless steel hand files (K-files), and two rotary nickel-titanium techniques...
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| Veröffentlicht in: | Journal of endodontics 2005-07, Vol.31 (7), p.529-532 |
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| container_title | Journal of endodontics |
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| creator | Lam, Patsandra P.S. Palamara, Joseph E.A. Messer, Harold H. |
| description | The study aimed to determine fracture loads in tooth roots after canal preparation using different techniques. Mesiobuccal roots of 39 extracted mandibular molars were used. Three groups each of 13 roots were prepared by stainless steel hand files (K-files), and two rotary nickel-titanium techniques (Lightspeed and Greater Taper files). After obturation, a vertical load was applied by means of a spreader inserted into the canal until fracture occurred. The mean fracture load was 10.2 ± 4.4 kg for K-files, 15.7 ± 9.1 kg for Lightspeed and 13.2 ± 6.1 kg for Greater Taper files, but differences were not statistically significant (p > 0.05). Most fracture lines were incomplete fractures on the buccal surface, followed by proximal and compound fractures. Greater apical enlargement (Lightspeed) or increased canal taper (Greater Taper files) did not increase fracture susceptibility of tooth roots. |
| doi_str_mv | 10.1097/01.don.0000150947.90682.a0 |
| format | Article |
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Mesiobuccal roots of 39 extracted mandibular molars were used. Three groups each of 13 roots were prepared by stainless steel hand files (K-files), and two rotary nickel-titanium techniques (Lightspeed and Greater Taper files). After obturation, a vertical load was applied by means of a spreader inserted into the canal until fracture occurred. The mean fracture load was 10.2 ± 4.4 kg for K-files, 15.7 ± 9.1 kg for Lightspeed and 13.2 ± 6.1 kg for Greater Taper files, but differences were not statistically significant (p > 0.05). Most fracture lines were incomplete fractures on the buccal surface, followed by proximal and compound fractures. Greater apical enlargement (Lightspeed) or increased canal taper (Greater Taper files) did not increase fracture susceptibility of tooth roots.</description><identifier>ISSN: 0099-2399</identifier><identifier>EISSN: 1878-3554</identifier><identifier>DOI: 10.1097/01.don.0000150947.90682.a0</identifier><identifier>PMID: 15980715</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Analysis of Variance ; Dentistry ; Humans ; Molar - injuries ; Nickel ; Root Canal Preparation - adverse effects ; Root Canal Preparation - instrumentation ; Root Canal Preparation - methods ; Stainless Steel ; Titanium ; Tooth Fractures - etiology ; Tooth Fractures - physiopathology ; Tooth Root - injuries</subject><ispartof>Journal of endodontics, 2005-07, Vol.31 (7), p.529-532</ispartof><rights>2005 The American Association of Endodontists</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c378t-4107350a89216f78b20a632af44ac458904a1b6aaac31cef959e724f6e15e4203</citedby><cites>FETCH-LOGICAL-c378t-4107350a89216f78b20a632af44ac458904a1b6aaac31cef959e724f6e15e4203</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1097/01.don.0000150947.90682.a0$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/15980715$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Lam, Patsandra P.S.</creatorcontrib><creatorcontrib>Palamara, Joseph E.A.</creatorcontrib><creatorcontrib>Messer, Harold H.</creatorcontrib><title>Fracture Strength of Tooth Roots following Canal Preparation by Hand and Rotary Instrumentation</title><title>Journal of endodontics</title><addtitle>J Endod</addtitle><description>The study aimed to determine fracture loads in tooth roots after canal preparation using different techniques. Mesiobuccal roots of 39 extracted mandibular molars were used. Three groups each of 13 roots were prepared by stainless steel hand files (K-files), and two rotary nickel-titanium techniques (Lightspeed and Greater Taper files). After obturation, a vertical load was applied by means of a spreader inserted into the canal until fracture occurred. The mean fracture load was 10.2 ± 4.4 kg for K-files, 15.7 ± 9.1 kg for Lightspeed and 13.2 ± 6.1 kg for Greater Taper files, but differences were not statistically significant (p > 0.05). Most fracture lines were incomplete fractures on the buccal surface, followed by proximal and compound fractures. Greater apical enlargement (Lightspeed) or increased canal taper (Greater Taper files) did not increase fracture susceptibility of tooth roots.</description><subject>Analysis of Variance</subject><subject>Dentistry</subject><subject>Humans</subject><subject>Molar - injuries</subject><subject>Nickel</subject><subject>Root Canal Preparation - adverse effects</subject><subject>Root Canal Preparation - instrumentation</subject><subject>Root Canal Preparation - methods</subject><subject>Stainless Steel</subject><subject>Titanium</subject><subject>Tooth Fractures - etiology</subject><subject>Tooth Fractures - physiopathology</subject><subject>Tooth Root - injuries</subject><issn>0099-2399</issn><issn>1878-3554</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkFFvFCEQx4nR2LP6FQzxwbddhwWWxTdztbZJE02tz2SOm61r9uAEVtNvL9e7pK-SDMzDj_nDj7F3AloB1nwA0W5jaKEuocEq01roh65FeMZWYjBDI7VWz9kKwNqmk9aesVc5_6q4kdK8ZGdC2wGM0CvmLhP6siTi30uicF9-8jjyuxhrc1v3zMc4z_HvFO75GgPO_FuiPSYsUwx888CvMGz5oW5jwfTAr0MuadlRKI_Ia_ZixDnTm9N5zn5cfr5bXzU3X79crz_dNF6aoTRKgJEacLCd6EczbDrAXnY4KoVe6cGCQrHpEdFL4Wm02pLp1NiT0KQ6kOfs_XHuPsXfC-XidlP2NM8YKC7Z9cYaqURfwY9H0KeYc6LR7dO0qy93AtxBrwPhql73pNc96nV4SHl7Slk2O9o-XT35rMDFEaD61z8TJZf9RMHTdkrkSx08_U_OP2o1jcQ</recordid><startdate>20050701</startdate><enddate>20050701</enddate><creator>Lam, Patsandra P.S.</creator><creator>Palamara, Joseph E.A.</creator><creator>Messer, Harold H.</creator><general>Elsevier Inc</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20050701</creationdate><title>Fracture Strength of Tooth Roots following Canal Preparation by Hand and Rotary Instrumentation</title><author>Lam, Patsandra P.S. ; Palamara, Joseph E.A. ; Messer, Harold H.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c378t-4107350a89216f78b20a632af44ac458904a1b6aaac31cef959e724f6e15e4203</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Analysis of Variance</topic><topic>Dentistry</topic><topic>Humans</topic><topic>Molar - injuries</topic><topic>Nickel</topic><topic>Root Canal Preparation - adverse effects</topic><topic>Root Canal Preparation - instrumentation</topic><topic>Root Canal Preparation - methods</topic><topic>Stainless Steel</topic><topic>Titanium</topic><topic>Tooth Fractures - etiology</topic><topic>Tooth Fractures - physiopathology</topic><topic>Tooth Root - injuries</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lam, Patsandra P.S.</creatorcontrib><creatorcontrib>Palamara, Joseph E.A.</creatorcontrib><creatorcontrib>Messer, Harold H.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of endodontics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lam, Patsandra P.S.</au><au>Palamara, Joseph E.A.</au><au>Messer, Harold H.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Fracture Strength of Tooth Roots following Canal Preparation by Hand and Rotary Instrumentation</atitle><jtitle>Journal of endodontics</jtitle><addtitle>J Endod</addtitle><date>2005-07-01</date><risdate>2005</risdate><volume>31</volume><issue>7</issue><spage>529</spage><epage>532</epage><pages>529-532</pages><issn>0099-2399</issn><eissn>1878-3554</eissn><abstract>The study aimed to determine fracture loads in tooth roots after canal preparation using different techniques. Mesiobuccal roots of 39 extracted mandibular molars were used. Three groups each of 13 roots were prepared by stainless steel hand files (K-files), and two rotary nickel-titanium techniques (Lightspeed and Greater Taper files). After obturation, a vertical load was applied by means of a spreader inserted into the canal until fracture occurred. The mean fracture load was 10.2 ± 4.4 kg for K-files, 15.7 ± 9.1 kg for Lightspeed and 13.2 ± 6.1 kg for Greater Taper files, but differences were not statistically significant (p > 0.05). Most fracture lines were incomplete fractures on the buccal surface, followed by proximal and compound fractures. Greater apical enlargement (Lightspeed) or increased canal taper (Greater Taper files) did not increase fracture susceptibility of tooth roots.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>15980715</pmid><doi>10.1097/01.don.0000150947.90682.a0</doi><tpages>4</tpages></addata></record> |
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| ispartof | Journal of endodontics, 2005-07, Vol.31 (7), p.529-532 |
| issn | 0099-2399 1878-3554 |
| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals Complete |
| subjects | Analysis of Variance Dentistry Humans Molar - injuries Nickel Root Canal Preparation - adverse effects Root Canal Preparation - instrumentation Root Canal Preparation - methods Stainless Steel Titanium Tooth Fractures - etiology Tooth Fractures - physiopathology Tooth Root - injuries |
| title | Fracture Strength of Tooth Roots following Canal Preparation by Hand and Rotary Instrumentation |
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