Accuracy of five electronic foramen locators with different operating systems: na ex vivo study
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
17/10/2013
17/10/2013
01/03/2013
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Resumo |
Objective: The aim of this study was to evaluate, ex vivo, the precision of five electronic root canal length measurement devices (ERCLMDs) with different operating systems: the Root ZX, Mini Apex Locator, Propex II, iPex, and RomiApex A-15, and the possible influence of the positioning of the instrument tips short of the apical foramen. Material and Methods: Forty-two mandibular bicuspids had their real canal lengths (RL) previously determined. Electronic measurements were performed 1.0 mm short of the apical foramen (-1.0), followed by measurements at the apical foramen (0.0). The data resulting from the comparison of the ERCLMD measurements and the RL were evaluated by the Wilcoxon and Friedman tests at a significance level of 5%. Results: Considering the measurements performed at 0.0 and -1.0, the precision rates for the ERCLMDs were: 73.5% and 47.1% (Root ZX), 73.5% and 55.9% (Mini Apex Locator), 67.6% and 41.1% (Propex II), 61.7% and 44.1% (iPex), and 79.4% and 44.1% (RomiApex A-15), respectively, considering ±0.5 mm of tolerance. Regarding the mean discrepancies, no differences were observed at 0.0; however, in the measurements at -1.0, the iPex, a multi-frequency ERCLMD, had significantly more discrepant readings short of the apical foramen than the other devices, except for the Propex II, which had intermediate results. When the ERCLMDs measurements at -1.0 were compared with those at 0.0, the Propex II, iPex and RomiApex A-15 presented significantly higher discrepancies in their readings. Conclusions: Under the conditions of the present study, all the ERCLMDs provided acceptable measurements at the 0.0 position. However, at the -1.0 position, the ERCLMDs had a lower precision, with statistically significant differences for the Propex II, iPex, and RomiApex A-15. |
Identificador |
Journal of Applied Oral Science, Bauru, v. 21, n. 2, p. 132-137, Mar./Apr. 2013 1678-7757 http://www.producao.usp.br/handle/BDPI/35168 10.1590/1678-7757201302188 http://www.scielo.br/pdf/jaos/v21n2/1678-7757-jaos-21-02-132.pdf |
Idioma(s) |
eng |
Publicador |
FOB/USP Bauru |
Relação |
Journal of Applied Oral Science |
Direitos |
openAccess FOB/USP |
Palavras-Chave | #Endodontics #Tooth apex, anatomy & histology #Odontometry methods #Dental equipment #Electric impedance #ENDODONTIA #RAIZ DENTÁRIA #ANATOMIA #HISTOLOGIA #ODONTOMETRIA #EQUIPAMENTO ODONTOLÓGICO |
Tipo |
article original article publishedVersion |