Dental and Medical Problems

Dent Med Probl
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Dental and Medical Problems

2019, vol. 56, nr 1, January-March, p. 53–57

doi: 10.17219/dmp/99655

Publication type: original article

Language: English

License: Creative Commons Attribution 3.0 Unported (CC BY 3.0)

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Assessment of the apically extruded debris between a rotary system, a reciprocating system and hand files during the root canal instrumentation of the deciduous molars

Ocena przepchnięcia wierzchołkowego zawartości kanałów po zastosowaniu systemu rotacyjnego, recyprokalnego i pilników ręcznych podczas opracowywania kanałów korzeniowych mlecznych zębów trzonowych

Ibrahim Alnassar1,A,B,C,D,F, Ahmad Saleem Alsafadi2,C,D,E,F, Chaza Kouchaji1,A,C,E,F

1 Department of Pediatric Dentistry, Faculty of Dentistry, Damascus University, Syria

2 Department of Orthodontics, Faculty of Dentistry, Damascus University, Syria

Abstract

Background. One of the factors that most negatively affect the endodontic instrumentation process in primary teeth is the presence of extruded debris in the periapical region. Therefore, different techniques have been evaluated to reach an answer to the question regarding which root canal preparation method produces the least amount of debris extrusion.
Objectives. The main objective of this study was to assess the amount of debris extrusion as well as irrigation associated with 3 different instrumentation techniques: a rotary system (PROTAPER NEXT® – PTN), a reciprocating system (WaveOne® – WO) and hand K-files.
Material and Methods. Forty-eight primary mandibular molars with a single distal canal were selected and randomly divided into 3 groups (n = 16). Three different techniques were used for the canal instrumentation of each group, comprising PTN, WO and hand K-files. Pre-weighed Eppendorf tubes were used for the collection of debris extrusion, then stored in an incubator at 70°C for 5 days. A one-way analysis of variance (ANOVA) test was used for data analysis, followed by Tukey’s post hoc test.
Results. Statistically significant differences were found while comparing the PTN and WO systems with the hand files. Both PTN and WO showed less debris extrusion toward the periapical tissues than the hand files. Still, no statistically significant differences were seen between the PTN and WO groups.
Conclusion. Generally, debris extrusion occurred in all of the 3 experimental groups. The PTN and WO systems showed the least debris extrusion as compared to the hand files during the root canal instrumentation of the primary teeth, and for these reasons along with the shorter operating time, it may be concluded that using rotary and reciprocating systems rather than manual files is highly advisable. However, a clinical assessment is suggested.

Key words

extruded debris, hand files, rotary system, primary teeth, reciprocating system

Słowa kluczowe

przepchnięta zawartość kanałów, pilniki ręczne, system rotacyjny, zęby mleczne, system recyprokalny

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