Comparison between the rotary (Hyflex EDM®) and manual (k-file) technique for instrumentation of primary molars: a 12-month randomized clinical follow-up study

Rotational instrumentation is an alternative for the clinical practice of pediatric dentists. However, there are few records in the literature on the clinical and radiographic aspects of treated teeth over time. Compare instrumentation time and filling quality between manual (k-file) and rotary (Hyf...

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Published inJournal of applied oral science Vol. 30; p. e20210527
Main Authors Amorim, Andressa Cardoso, Caldeira, Amanda Valentim, Sampaio, Samara Catarino, Lourenço Neto, Natalino, Oliveira, Thais Marchini, Nogueira, Denismar Alves, Moretti, Ana Beatriz da Silveira, Sakai, Vivien Thiemy
Format Journal Article
LanguageEnglish
Published Brazil Faculdade De Odontologia De Bauru - USP 01.01.2022
University of São Paulo
Subjects
Child
Deciduous tooth
Dental pulp
DENTISTRY, ORAL SURGERY & MEDICINE
Follow-Up Studies
Humans
Molar - diagnostic imaging
Molar - surgery
Original
Pulpectomy
Root Canal Preparation
Tooth, Deciduous
Deciduous tooth
Pulpectomy
Dental pulp
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Summary:Rotational instrumentation is an alternative for the clinical practice of pediatric dentists. However, there are few records in the literature on the clinical and radiographic aspects of treated teeth over time. Compare instrumentation time and filling quality between manual (k-file) and rotary (Hyflex EDM®) files, and clinically and radiographically follow-up the treated teeth for 12 months. Moreover, the characteristics of glass ionomer restorations and their interference in the treatment prognosis over time were evaluated. In total, 40 children with pulp involvement in primary molars received treatment with Hyflex EDM® or manual rotary files, performed by an operator. Clinical and radiographic aspects were observed at different times to determine the effectiveness of each technique. The rotary system reduced instrumentation time when compared to the use of manual files (p≤0.05), but there was no difference in filling quality between the groups (p≥0.05). Moreover, both types of instrumentation were effective for 12 months (p≥0.05), and restoration retention influenced the emergence of periapical lesions (p≤0.05). Although rotary files reduce clinical time, the clinical and radiographic aspects of both techniques were similar over 12 months. Moreover, restoration retention has been shown to be related to treatment prognosis.
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Authors’ contributions
The authors have explicitly stated that there are no conflicts of interest in connection with this article.
Conflict of interest
Amorim, Andressa Cardoso: Conceptualization (Equal); Data curation (Lead); Formal analysis (Lead); Funding acquisition (Lead); Investigation (Lead); Methodology (Lead); Resources (Equal); Validation (Equal); Writing – original draft (Lead); Writing – review & editing (Lead). Caldeira, Amanda Valentim: Data curation (Equal); Formal analysis (Equal); Investigation (Equal); Methodology (Equal); Supervision (Equal); Validation (Equal). Sampaio, Samara Catarino: Data curation (Equal); Formal analysis (Equal); Supervision (Equal); Writing – original draft (Equal); Lourenço Neto, Natalino: Conceptualization (Supporting); Methodology (Supporting); Supervision (Supporting); Writing – original draft (Equal); Writing – review & editing (Equal). Oliveira, Thais Marchini: Conceptualization (Supporting); Writing – original draft (Supporting); Writing – review & editing (Supporting). Nogueira, Denismar Alves: Formal analysis (Lead); Methodology (Supporting); Supervision (Lead); Visualization (Equal); Writing – original draft (Equal). Moretti, Ana Beatriz S: Conceptualization (Lead); Data curation (Lead); Formal analysis (Lead); Methodology (Lead); Supervision (Lead); Writing – review & editing (Supporting). Sakai, Vivien Thiemy: Conceptualization (Lead); Data curation (Lead); Formal analysis (Lead); Investigation (Lead); Methodology (Lead); Supervision (Equal); Visualization (Equal); Writing – original draft (Lead); Writing – review & editing (Lead)
ISSN:1678-7757
1678-7765
1678-7765
DOI:10.1590/1678-7757-2021-0527