A finite element study on the mechanical behavior of reciprocating endodontic files
AIM: To evaluate the mechanical behavior of reciprocating endodontic files, comparing nickel-titanium NiTi and stainless steel 316L St.St. 316L as manufacturing material for such instruments. METHODS: A three-dimensional finite element model was designed for this study. The simplified instrument mod...
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| Veröffentlicht in: | Brazilian journal of oral sciences 2015-03, Vol.14 (1), p.52-59 |
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| container_title | Brazilian journal of oral sciences |
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| creator | El-Anwar, Mohamed I. Mandorah, Ayman O. Yousief, Salah A. Soliman, Tarek A. El-Wahab, Tarek M. Abd |
| description | AIM: To evaluate the mechanical behavior of reciprocating endodontic files, comparing nickel-titanium NiTi and stainless steel 316L St.St. 316L as manufacturing material for such instruments. METHODS: A three-dimensional finite element model was designed for this study. The simplified instrument model geometry was created on commercial CAD/CAM software. Real strain stress curves of St.St. 316L and NiTi were used in the analysis. Non-linear static analysis was performed to simulate the instrument inside root canal at an angle of 45° in the apical portion, and subjected to torsion of 0.3 N.cm. RESULTS: Non-linear NiTi material showed super elasticity and high functionality in such applications. Very high levels of stress appeared in the file at 3 mm from the tip close to yield point. CONCLUSIONS: St. St. 316L is not suitable for manufacturing reciprocating instruments. Modeling of the instrument with equivalent circular cross-sectional area did not affect results quality. Reciprocating instruments have short lifespan, thus manufacturers recommend using one file per tooth. Reciprocating instruments are recommended for less experienced dentist. |
| doi_str_mv | 10.1590/1677-3225v14n1a11 |
| format | Article |
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Abd</creator><creatorcontrib>El-Anwar, Mohamed I. ; Mandorah, Ayman O. ; Yousief, Salah A. ; Soliman, Tarek A. ; El-Wahab, Tarek M. Abd</creatorcontrib><description>AIM: To evaluate the mechanical behavior of reciprocating endodontic files, comparing nickel-titanium NiTi and stainless steel 316L St.St. 316L as manufacturing material for such instruments. METHODS: A three-dimensional finite element model was designed for this study. The simplified instrument model geometry was created on commercial CAD/CAM software. Real strain stress curves of St.St. 316L and NiTi were used in the analysis. Non-linear static analysis was performed to simulate the instrument inside root canal at an angle of 45° in the apical portion, and subjected to torsion of 0.3 N.cm. RESULTS: Non-linear NiTi material showed super elasticity and high functionality in such applications. Very high levels of stress appeared in the file at 3 mm from the tip close to yield point. CONCLUSIONS: St. St. 316L is not suitable for manufacturing reciprocating instruments. Modeling of the instrument with equivalent circular cross-sectional area did not affect results quality. Reciprocating instruments have short lifespan, thus manufacturers recommend using one file per tooth. Reciprocating instruments are recommended for less experienced dentist.</description><identifier>ISSN: 1677-3225</identifier><identifier>EISSN: 1677-3225</identifier><identifier>DOI: 10.1590/1677-3225v14n1a11</identifier><language>eng</language><publisher>Faculdade de Odontologia de Piracicaba - UNICAMP</publisher><subject>DENTISTRY, ORAL SURGERY & MEDICINE</subject><ispartof>Brazilian journal of oral sciences, 2015-03, Vol.14 (1), p.52-59</ispartof><rights>This work is licensed under a Creative Commons Attribution 4.0 International License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c2421-fd872c0a84efde98281ee8b249ce491094deca56c0af32f08827c39a190454463</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,776,780,860,881,27901,27902</link.rule.ids></links><search><creatorcontrib>El-Anwar, Mohamed I.</creatorcontrib><creatorcontrib>Mandorah, Ayman O.</creatorcontrib><creatorcontrib>Yousief, Salah A.</creatorcontrib><creatorcontrib>Soliman, Tarek A.</creatorcontrib><creatorcontrib>El-Wahab, Tarek M. Abd</creatorcontrib><title>A finite element study on the mechanical behavior of reciprocating endodontic files</title><title>Brazilian journal of oral sciences</title><addtitle>Braz. J. Oral Sci</addtitle><description>AIM: To evaluate the mechanical behavior of reciprocating endodontic files, comparing nickel-titanium NiTi and stainless steel 316L St.St. 316L as manufacturing material for such instruments. METHODS: A three-dimensional finite element model was designed for this study. The simplified instrument model geometry was created on commercial CAD/CAM software. Real strain stress curves of St.St. 316L and NiTi were used in the analysis. Non-linear static analysis was performed to simulate the instrument inside root canal at an angle of 45° in the apical portion, and subjected to torsion of 0.3 N.cm. RESULTS: Non-linear NiTi material showed super elasticity and high functionality in such applications. Very high levels of stress appeared in the file at 3 mm from the tip close to yield point. CONCLUSIONS: St. St. 316L is not suitable for manufacturing reciprocating instruments. Modeling of the instrument with equivalent circular cross-sectional area did not affect results quality. Reciprocating instruments have short lifespan, thus manufacturers recommend using one file per tooth. Reciprocating instruments are recommended for less experienced dentist.</description><subject>DENTISTRY, ORAL SURGERY & MEDICINE</subject><issn>1677-3225</issn><issn>1677-3225</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNpNkE1qwzAQhUVpoWnaA3SnCzjVyLItLUPoHwS6SLsWijyqFRwpSE4gt69D2tDFMMMw3xveI-QR2AwqxZ6gbpqi5Lw6gAhgAK7I5LK7_jffkrucN4wJXguYkNWcOh_8gBR73GIYaB727ZHGQIcO6RZtZ4K3pqdr7MzBx0Sjowmt36VozeDDN8XQxjaGwdtRq8d8T26c6TM-_PYp-Xp5_ly8FcuP1_fFfFlYLjgUrpUNt8xIga5FJbkERLnmQlkUCpgSLVpT1eOJK7ljUvLGlsqAYqISoi6nZHbWzdZjH_Um7lMYH-rVya0-ueUMKsYYjFXxEYAzYFPMOaHTu-S3Jh01MH2KUV_AvxjLH-waY9s</recordid><startdate>20150301</startdate><enddate>20150301</enddate><creator>El-Anwar, Mohamed I.</creator><creator>Mandorah, Ayman O.</creator><creator>Yousief, Salah A.</creator><creator>Soliman, Tarek A.</creator><creator>El-Wahab, Tarek M. 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Abd</creatorcontrib><collection>CrossRef</collection><collection>SciELO</collection><jtitle>Brazilian journal of oral sciences</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>El-Anwar, Mohamed I.</au><au>Mandorah, Ayman O.</au><au>Yousief, Salah A.</au><au>Soliman, Tarek A.</au><au>El-Wahab, Tarek M. Abd</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A finite element study on the mechanical behavior of reciprocating endodontic files</atitle><jtitle>Brazilian journal of oral sciences</jtitle><addtitle>Braz. J. Oral Sci</addtitle><date>2015-03-01</date><risdate>2015</risdate><volume>14</volume><issue>1</issue><spage>52</spage><epage>59</epage><pages>52-59</pages><issn>1677-3225</issn><eissn>1677-3225</eissn><abstract>AIM: To evaluate the mechanical behavior of reciprocating endodontic files, comparing nickel-titanium NiTi and stainless steel 316L St.St. 316L as manufacturing material for such instruments. METHODS: A three-dimensional finite element model was designed for this study. The simplified instrument model geometry was created on commercial CAD/CAM software. Real strain stress curves of St.St. 316L and NiTi were used in the analysis. Non-linear static analysis was performed to simulate the instrument inside root canal at an angle of 45° in the apical portion, and subjected to torsion of 0.3 N.cm. RESULTS: Non-linear NiTi material showed super elasticity and high functionality in such applications. Very high levels of stress appeared in the file at 3 mm from the tip close to yield point. CONCLUSIONS: St. St. 316L is not suitable for manufacturing reciprocating instruments. Modeling of the instrument with equivalent circular cross-sectional area did not affect results quality. Reciprocating instruments have short lifespan, thus manufacturers recommend using one file per tooth. Reciprocating instruments are recommended for less experienced dentist.</abstract><pub>Faculdade de Odontologia de Piracicaba - UNICAMP</pub><doi>10.1590/1677-3225v14n1a11</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| source | Bioline International; DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals |
| subjects | DENTISTRY, ORAL SURGERY & MEDICINE |
| title | A finite element study on the mechanical behavior of reciprocating endodontic files |
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