Effect of Rotational Speed on Root Canal Preparation with Hero 642 Rotary Ni-Ti Instruments
The purpose of this study was to evaluate the influence of Hero 642 rotary Ni-Ti instruments driven at 300, 400, or 600 rpm on root canal straightening, loss of working length, and instrument breakage. Sixty mesial root canals from extracted human mandibular molars were divided into 3 groups of 20 e...
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| Veröffentlicht in: | Journal of endodontics 2003-07, Vol.29 (7), p.447-449 |
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| container_title | Journal of endodontics |
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| creator | Karagöz-Küçükay, Işıl Ersev, Handan Engin-Akkoca, Ece Küçükay, Sedat Gürsoy, Tankut |
| description | The purpose of this study was to evaluate the influence of Hero 642 rotary Ni-Ti instruments driven at 300, 400, or 600 rpm on root canal straightening, loss of working length, and instrument breakage. Sixty mesial root canals from extracted human mandibular molars were divided into 3 groups of 20 each and were instrumented at the aforementioned rotational speeds with a crown-down technique. Using a digital intraoral radiography system directly on the images of pre- and postoperative radiographs, degrees of canal curvatures were measured and recorded. Statistical analysis showed that final canal curvatures and working lengths were significantly reduced compared with those of original values in each group (p < 0.001). However, using Hero 642 rotary Ni-Ti system at different rotational speeds had no effect on canal curvature and working length alterations (p > 0.05). No file breakage was observed in any of the groups. |
| doi_str_mv | 10.1097/00004770-200307000-00005 |
| format | Article |
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Sixty mesial root canals from extracted human mandibular molars were divided into 3 groups of 20 each and were instrumented at the aforementioned rotational speeds with a crown-down technique. Using a digital intraoral radiography system directly on the images of pre- and postoperative radiographs, degrees of canal curvatures were measured and recorded. Statistical analysis showed that final canal curvatures and working lengths were significantly reduced compared with those of original values in each group (p < 0.001). However, using Hero 642 rotary Ni-Ti system at different rotational speeds had no effect on canal curvature and working length alterations (p > 0.05). No file breakage was observed in any of the groups.</description><identifier>ISSN: 0099-2399</identifier><identifier>EISSN: 1878-3554</identifier><identifier>DOI: 10.1097/00004770-200307000-00005</identifier><identifier>PMID: 12877260</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Dental Alloys ; Dental Instruments ; Dental Pulp Cavity - anatomy & histology ; Dental Pulp Cavity - diagnostic imaging ; Dentistry ; Humans ; Molar ; Nickel ; Radiography, Dental, Digital ; Root Canal Preparation - instrumentation ; Rotation ; Titanium</subject><ispartof>Journal of endodontics, 2003-07, Vol.29 (7), p.447-449</ispartof><rights>2003 The American Association of Endodontists</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c370t-aa4d4db367ceb1e105d15e0169d914758aaf4502e53991422bc0a41063a16e4a3</citedby><cites>FETCH-LOGICAL-c370t-aa4d4db367ceb1e105d15e0169d914758aaf4502e53991422bc0a41063a16e4a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1097/00004770-200307000-00005$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/12877260$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Karagöz-Küçükay, Işıl</creatorcontrib><creatorcontrib>Ersev, Handan</creatorcontrib><creatorcontrib>Engin-Akkoca, Ece</creatorcontrib><creatorcontrib>Küçükay, Sedat</creatorcontrib><creatorcontrib>Gürsoy, Tankut</creatorcontrib><title>Effect of Rotational Speed on Root Canal Preparation with Hero 642 Rotary Ni-Ti Instruments</title><title>Journal of endodontics</title><addtitle>J Endod</addtitle><description>The purpose of this study was to evaluate the influence of Hero 642 rotary Ni-Ti instruments driven at 300, 400, or 600 rpm on root canal straightening, loss of working length, and instrument breakage. Sixty mesial root canals from extracted human mandibular molars were divided into 3 groups of 20 each and were instrumented at the aforementioned rotational speeds with a crown-down technique. Using a digital intraoral radiography system directly on the images of pre- and postoperative radiographs, degrees of canal curvatures were measured and recorded. Statistical analysis showed that final canal curvatures and working lengths were significantly reduced compared with those of original values in each group (p < 0.001). However, using Hero 642 rotary Ni-Ti system at different rotational speeds had no effect on canal curvature and working length alterations (p > 0.05). No file breakage was observed in any of the groups.</description><subject>Dental Alloys</subject><subject>Dental Instruments</subject><subject>Dental Pulp Cavity - anatomy & histology</subject><subject>Dental Pulp Cavity - diagnostic imaging</subject><subject>Dentistry</subject><subject>Humans</subject><subject>Molar</subject><subject>Nickel</subject><subject>Radiography, Dental, Digital</subject><subject>Root Canal Preparation - instrumentation</subject><subject>Rotation</subject><subject>Titanium</subject><issn>0099-2399</issn><issn>1878-3554</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2003</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkElPwzAQhS0EgrL8BeQTt8B4i5MjVECRECAoJw6Wm0yEURsX2wXx73EX4IgvIz99b5ZHCGVwyqDWZ5Cf1BoKDiBA51-xlNQWGbBKV4VQSm6TAUBdF1zU9R7Zj_ENgGkh9C7ZY7zSmpcwIC-XXYdNor6jjz7Z5Hxvp_RpjthS32fNJzq0S-0h4NyGFUE_XXqlIwyelpKvjOGL3rli7OhNH1NYzLBP8ZDsdHYa8WhTD8jz1eV4OCpu769vhue3RSM0pMJa2cp2Ikrd4IQhA9UyhcDKuq2Z1KqytpMKOKp8CZOcTxqwkkEpLCtRWnFATtZ958G_LzAmM3OxwenU9ugX0WghKy54mcFqDTbBxxiwM_PgZnl3w8AsgzU_wZrfYFeSytbjzYzFZIbtn3GTZAYu1gDmSz8cBhMbh32DrQs5YNN69_-Ub3fnheA</recordid><startdate>20030701</startdate><enddate>20030701</enddate><creator>Karagöz-Küçükay, Işıl</creator><creator>Ersev, Handan</creator><creator>Engin-Akkoca, Ece</creator><creator>Küçükay, Sedat</creator><creator>Gürsoy, Tankut</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>20030701</creationdate><title>Effect of Rotational Speed on Root Canal Preparation with Hero 642 Rotary Ni-Ti Instruments</title><author>Karagöz-Küçükay, Işıl ; Ersev, Handan ; Engin-Akkoca, Ece ; Küçükay, Sedat ; Gürsoy, Tankut</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c370t-aa4d4db367ceb1e105d15e0169d914758aaf4502e53991422bc0a41063a16e4a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2003</creationdate><topic>Dental Alloys</topic><topic>Dental Instruments</topic><topic>Dental Pulp Cavity - anatomy & histology</topic><topic>Dental Pulp Cavity - diagnostic imaging</topic><topic>Dentistry</topic><topic>Humans</topic><topic>Molar</topic><topic>Nickel</topic><topic>Radiography, Dental, Digital</topic><topic>Root Canal Preparation - instrumentation</topic><topic>Rotation</topic><topic>Titanium</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Karagöz-Küçükay, Işıl</creatorcontrib><creatorcontrib>Ersev, Handan</creatorcontrib><creatorcontrib>Engin-Akkoca, Ece</creatorcontrib><creatorcontrib>Küçükay, Sedat</creatorcontrib><creatorcontrib>Gürsoy, Tankut</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>Karagöz-Küçükay, Işıl</au><au>Ersev, Handan</au><au>Engin-Akkoca, Ece</au><au>Küçükay, Sedat</au><au>Gürsoy, Tankut</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of Rotational Speed on Root Canal Preparation with Hero 642 Rotary Ni-Ti Instruments</atitle><jtitle>Journal of endodontics</jtitle><addtitle>J Endod</addtitle><date>2003-07-01</date><risdate>2003</risdate><volume>29</volume><issue>7</issue><spage>447</spage><epage>449</epage><pages>447-449</pages><issn>0099-2399</issn><eissn>1878-3554</eissn><abstract>The purpose of this study was to evaluate the influence of Hero 642 rotary Ni-Ti instruments driven at 300, 400, or 600 rpm on root canal straightening, loss of working length, and instrument breakage. 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| ispartof | Journal of endodontics, 2003-07, Vol.29 (7), p.447-449 |
| issn | 0099-2399 1878-3554 |
| language | eng |
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| source | MEDLINE; ScienceDirect Journals (5 years ago - present) |
| subjects | Dental Alloys Dental Instruments Dental Pulp Cavity - anatomy & histology Dental Pulp Cavity - diagnostic imaging Dentistry Humans Molar Nickel Radiography, Dental, Digital Root Canal Preparation - instrumentation Rotation Titanium |
| title | Effect of Rotational Speed on Root Canal Preparation with Hero 642 Rotary Ni-Ti Instruments |
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