Patricia Marton Costa, Renata Maíra de Souza Leal, Guilherme Hiroshi Yamanari, Bruno Cavalini Cavenago, Marco Antônio Húngaro Duarte
{"title":"在往复和旋转运动中使用WaveOne Primary锉进行根管再治疗的有效性。","authors":"Patricia Marton Costa, Renata Maíra de Souza Leal, Guilherme Hiroshi Yamanari, Bruno Cavalini Cavenago, Marco Antônio Húngaro Duarte","doi":"10.5395/rde.2023.48.e15","DOIUrl":null,"url":null,"abstract":"<p><strong>Objectives: </strong>This study evaluated the efficiency of WaveOne Primary files (Dentsply Sirona) for removing root canal fillings with 2 types of movement: reciprocating (RCP) and continuous counterclockwise rotation (CCR).</p><p><strong>Materials and methods: </strong>Twenty mandibular incisors were prepared with a RCP instrument (25.08) and filled using the Tagger hybrid obturation technique. The teeth were retreated with a WaveOne Primary file and randomly allocated to 2 experimental retreatment groups (<i>n</i> = 10) according to movement type: RCP and CCR. The root canals were emptied of filling material in the first 3 steps of insertion, until reaching the working length. The timing of retreatment and procedure errors were recorded for all samples. The specimens were scanned before and after the retreatment procedure with micro-computed tomography to calculate the percentage and volume (mm<sup>3</sup>) of the residual filling material. The results were statistically evaluated using paired and independent <i>t</i>-tests, with a significance level set at 5%.</p><p><strong>Results: </strong>No significant difference was found in the timing of filling removal between the groups, with a mean of 322 seconds (RCP) and 327 seconds (CCR) (<i>p</i> < 0.05). There were 6 instrument fractures: 1 in a RCP motion file and 5 in continuous rotation files. The volumes of residual filling material were similar (9.94% for RCP and 15.94% for CCR; <i>p</i> > 0.05).</p><p><strong>Conclusions: </strong>The WaveOne Primary files used in retreatment performed similarly in both RCP and CCR movements. Neither movement type completely removed the obturation material, but the RCP movement provided greater safety.</p>","PeriodicalId":21102,"journal":{"name":"Restorative Dentistry & Endodontics","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2023-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/b2/a5/rde-48-e15.PMC10240093.pdf","citationCount":"1","resultStr":"{\"title\":\"Effectiveness of endodontic retreatment using WaveOne Primary files in reciprocating and rotary motions.\",\"authors\":\"Patricia Marton Costa, Renata Maíra de Souza Leal, Guilherme Hiroshi Yamanari, Bruno Cavalini Cavenago, Marco Antônio Húngaro Duarte\",\"doi\":\"10.5395/rde.2023.48.e15\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Objectives: </strong>This study evaluated the efficiency of WaveOne Primary files (Dentsply Sirona) for removing root canal fillings with 2 types of movement: reciprocating (RCP) and continuous counterclockwise rotation (CCR).</p><p><strong>Materials and methods: </strong>Twenty mandibular incisors were prepared with a RCP instrument (25.08) and filled using the Tagger hybrid obturation technique. The teeth were retreated with a WaveOne Primary file and randomly allocated to 2 experimental retreatment groups (<i>n</i> = 10) according to movement type: RCP and CCR. The root canals were emptied of filling material in the first 3 steps of insertion, until reaching the working length. The timing of retreatment and procedure errors were recorded for all samples. The specimens were scanned before and after the retreatment procedure with micro-computed tomography to calculate the percentage and volume (mm<sup>3</sup>) of the residual filling material. The results were statistically evaluated using paired and independent <i>t</i>-tests, with a significance level set at 5%.</p><p><strong>Results: </strong>No significant difference was found in the timing of filling removal between the groups, with a mean of 322 seconds (RCP) and 327 seconds (CCR) (<i>p</i> < 0.05). There were 6 instrument fractures: 1 in a RCP motion file and 5 in continuous rotation files. The volumes of residual filling material were similar (9.94% for RCP and 15.94% for CCR; <i>p</i> > 0.05).</p><p><strong>Conclusions: </strong>The WaveOne Primary files used in retreatment performed similarly in both RCP and CCR movements. Neither movement type completely removed the obturation material, but the RCP movement provided greater safety.</p>\",\"PeriodicalId\":21102,\"journal\":{\"name\":\"Restorative Dentistry & Endodontics\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2023-05-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/b2/a5/rde-48-e15.PMC10240093.pdf\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Restorative Dentistry & Endodontics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.5395/rde.2023.48.e15\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Restorative Dentistry & Endodontics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5395/rde.2023.48.e15","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Effectiveness of endodontic retreatment using WaveOne Primary files in reciprocating and rotary motions.
Objectives: This study evaluated the efficiency of WaveOne Primary files (Dentsply Sirona) for removing root canal fillings with 2 types of movement: reciprocating (RCP) and continuous counterclockwise rotation (CCR).
Materials and methods: Twenty mandibular incisors were prepared with a RCP instrument (25.08) and filled using the Tagger hybrid obturation technique. The teeth were retreated with a WaveOne Primary file and randomly allocated to 2 experimental retreatment groups (n = 10) according to movement type: RCP and CCR. The root canals were emptied of filling material in the first 3 steps of insertion, until reaching the working length. The timing of retreatment and procedure errors were recorded for all samples. The specimens were scanned before and after the retreatment procedure with micro-computed tomography to calculate the percentage and volume (mm3) of the residual filling material. The results were statistically evaluated using paired and independent t-tests, with a significance level set at 5%.
Results: No significant difference was found in the timing of filling removal between the groups, with a mean of 322 seconds (RCP) and 327 seconds (CCR) (p < 0.05). There were 6 instrument fractures: 1 in a RCP motion file and 5 in continuous rotation files. The volumes of residual filling material were similar (9.94% for RCP and 15.94% for CCR; p > 0.05).
Conclusions: The WaveOne Primary files used in retreatment performed similarly in both RCP and CCR movements. Neither movement type completely removed the obturation material, but the RCP movement provided greater safety.