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Evaluation of foramen locating accuracy of an endodontic motor integrated with electronic foramen employing optimal glide path kinematics

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Abstract

Objective

This study aimed to evaluate the accuracy of the auto apical function in the maintenance of the apical limit of instrumentation during glide path procedures when associated to OGP kinematics of Tri Auto ZX2, compared to the continuous rotation of the same motor, as well as Root ZX II and VDW Gold.

Materials and methods

Forty-eight extracted human mandibular single-rooted premolars were selected. After endodontic access, cervical pre-flaring was performed using size 30, 0.10 taper rotary instruments, and the apical foramen size was standardized to 200 μm. Teeth were randomly divided into four groups (n = 12) according to the device and kinematics. For all the groups, the Auto Apical Stop function (AAS) was set to the 0.0 mark. Glide path instruments size 25, .01 taper were activated inside the canals until the apical limit was reached. Then, the files were fixed with cyanoacrylate to the teeth and decoupled from the equipment. Data were statistically analyzed in GraphPad Prism 6.0 software with the significance set at 5% (Kruskal–Wallis tests).

Results

There was no difference in the mean deviation between the groups. No significant difference was found among the groups when the distributions and percentages of differences between the file tip and the apical foramen were compared (P > 0.05).

Conclusion

The use of auto apical function at the 0.0 mark of all tested devices provided an adequate control of the apical limit during glide path preparation. Foramen locating accuracy of Tri Auto ZX2 in OGP kinematics was similar to those of Tri Auto ZX2, Root ZX II, and VDW Gold in continuous kinematics.

Clinical relevance

Clinical strategies in canal negotiation and glide path as OGP motion associated to electronic foramen locators could reduce iatrogenic risk of deviation and file fractures and create an easier initial preparation to facilitate endodontic procedures.

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Funding

This study was partially financed by CAPES—Brazilian Federal Agency for Support and Evaluation of Graduate Education within the Ministry of Education of Brazil.

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Authors and Affiliations

  1. Brazilian Dental Association, Taguatinga, Federal District, Brasilia, Brazil

    Ricardo Affonso Bernardes

  2. Post-Graduate Program in Dentistry, Federal University of Ceará, Fortaleza, Ceará, Brazil

    Alinne Patierry Oliveira Pacífico Feitosa & Bruno C. de Vasconcelos

  3. Department of Dentistry, Endodontics and Dental Materials, Bauru Dental School, University of São Paulo, Bauru, São Paulo, Brazil

    Clovis Monteiro Bramante, Rodrigo Ricci Vivan & Marco Antônio Hungaro Duarte

  4. Department of Periodontics & Endodontics, University At Buffalo, Buffalo, NY, USA

    Lucila Piasecki

  5. Post-Graduate Program in Dentistry, School of Pharmacy, Dentistry and Nursing, Federal University of Ceará, 1253 Monsenhor Furtado St, Fortaleza, CE, CEP 60430-355, Brazil

    Bruno C. de Vasconcelos

Authors
  1. Ricardo Affonso Bernardes
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  2. Alinne Patierry Oliveira Pacífico Feitosa
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  3. Clovis Monteiro Bramante
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  4. Rodrigo Ricci Vivan
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  5. Lucila Piasecki
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  6. Marco Antônio Hungaro Duarte
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  7. Bruno C. de Vasconcelos
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Corresponding author

Correspondence to Bruno C. de Vasconcelos.

Ethics declarations

Ethical approval

This study was previously approved by Local Ethics Committee (#1.900.129/2017) and was in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.

Informed consent

Informed consent was obtained from all individual participants included in the study.

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The authors declare no competing interests.

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Bernardes, R.A., Feitosa, A.P.O.P., Bramante, C.M. et al. Evaluation of foramen locating accuracy of an endodontic motor integrated with electronic foramen employing optimal glide path kinematics. Clin Oral Invest 26, 1293–1298 (2022). https://doi.org/10.1007/s00784-021-04103-3

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  • DOI: https://doi.org/10.1007/s00784-021-04103-3

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