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In vitro comparison of root canal obturation quality in primary molars using lentulo spiral and reverse rotary techniques with zinc oxide eugenol and endoflas: microcomputed tomography analysis
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In vitro comparison of root canal obturation quality in primary molars using lentulo spiral and reverse rotary techniques with zinc oxide eugenol and endoflas: microcomputed tomography analysis
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In vitro comparison of root canal obturation quality in primary molars using lentulo spiral and reverse rotary techniques with zinc oxide eugenol and endoflas: microcomputed tomography analysis
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Journal Article
In vitro comparison of root canal obturation quality in primary molars using lentulo spiral and reverse rotary techniques with zinc oxide eugenol and endoflas: microcomputed tomography analysis
2025
Overview
Background
Primary teeth are necessary for mastication, speech, and guiding the eruption of permanent teeth. Dental caries often requires pulpectomy treatment to preserve these teeth. The success of pulpectomy depends on root canal obturation quality. This study aimed to compare the filling quality of zinc oxide-eugenol (ZOE) and Endoflas using lentulo and reverse rotary techniques, assessed by micro-computed tomography.
Methods
An in vitro study was conducted on 32 extracted human primary mandibular second molars. Teeth were randomly divided into four groups (
n
= 8) based on obturation material (ZOE or Endoflas) and technique (lentulo spiral or reverse rotary file). After standard canal preparation, obturation was performed. Micro-computed tomography assessed the quality of obturation by measuring the percentage of void and filling volume. Statistical analysis was performed using analysis of variance (ANOVA) test (
p
< 0.05).
Results
The lowest total void percentage was observed in the (ZOE + Lentulo) group (22.61 ± 9.00), and the highest in the (Endoflas|+Lentulo) group (35.97 ± 5.90). ZOE obturation resulted in lower voids (24.09 ± 8.50) compared to Endoflas (30.70 ± 8.50). The reverse rotary technique showed non significant lower voids (25.50 ± 7.60) than Lentulo (29.29 ± 10.10) (
p
= 0.181). A significant interaction effect was observed between material and technique in term of total voids (
p
= 0.021). (ZOE + Lentulo) group showed the highest filling volume (76.50 ± 9.10), while (Endoflas + Lentulo) had the lowest (64.02 ± 5.90). ZOE yielded higher filling volume (75.47 ± 8.50) compared to Endoflas (69.22 ± 8.50), with a significant material effect (
p
= 0.034), but no significant effect of technique (
p
= 0.138).
Conclusion
ZOE + Lentulo technique provided the most root canal obturation quality, while Endoflas + Lentulo showed the least quality. The root canal filling quality was more influenced by the obturation material than the technique used.
Publisher
BioMed Central,BioMed Central Ltd,BMC
Subject
/ Endoflas
/ Humans
/ Medicine
/ Methods
/ Oral and Maxillofacial Surgery
/ Root Canal Filling Materials - chemistry
/ Root Canal Filling Materials - therapeutic use
/ Root Canal Obturation - instrumentation
/ Root Canal Obturation - methods
/ Root Canal Obturation - standards
/ Root Canal Preparation - instrumentation
/ Root Canal Preparation - methods
/ Tooth, Deciduous - diagnostic imaging
