A micro-computed tomographic analysis of obturation quality and retreatability of an epoxy resin-based sealer.
Journal
Minerva dental and oral science
ISSN: 2724-6337
Titre abrégé: Minerva Dent Oral Sci
Pays: Italy
ID NLM: 101778009
Informations de publication
Date de publication:
Jun 2022
Jun 2022
Historique:
pubmed:
13
10
2021
medline:
30
6
2022
entrez:
12
10
2021
Statut:
ppublish
Résumé
To evaluate the voids percentage and the retreatability by different supplementary irrigation techniques of a matched-taper single cone and epoxy resin-based sealer. A total of 72 single-rooted premolars were prepared and filled with gutta-percha and MM-Seal. The percentage of voids in the whole root canal and each anatomical part were evaluated by Micro-CT scans. After root filling removal, the teeth were randomly allocated (N.=24) to group A, syringe irrigation; group B, Tornado Brush, and group C, ultrasonically activated irrigation and re-scanned to establish the volume of remnant root filling material. The data relative to voids and retreatment techniques were established by the Kruskal-Wallis test. Differences in retreatment time were examined using one-way ANOVA and Tukey's Test (P<0.05). No significant difference was found in the voids percentage between the different root-thirds and between the supplementary irrigation groups in the MM-Seal remnants for the whole root canal and each section. In all groups, the coronal region exhibited more remaining material than other sections. MM-Seal showed low voids percentage and its removal was not significantly improved by supplementary irrigation techniques.
Sections du résumé
BACKGROUND
BACKGROUND
To evaluate the voids percentage and the retreatability by different supplementary irrigation techniques of a matched-taper single cone and epoxy resin-based sealer.
METHODS
METHODS
A total of 72 single-rooted premolars were prepared and filled with gutta-percha and MM-Seal. The percentage of voids in the whole root canal and each anatomical part were evaluated by Micro-CT scans. After root filling removal, the teeth were randomly allocated (N.=24) to group A, syringe irrigation; group B, Tornado Brush, and group C, ultrasonically activated irrigation and re-scanned to establish the volume of remnant root filling material. The data relative to voids and retreatment techniques were established by the Kruskal-Wallis test. Differences in retreatment time were examined using one-way ANOVA and Tukey's Test (P<0.05).
RESULTS
RESULTS
No significant difference was found in the voids percentage between the different root-thirds and between the supplementary irrigation groups in the MM-Seal remnants for the whole root canal and each section. In all groups, the coronal region exhibited more remaining material than other sections.
CONCLUSIONS
CONCLUSIONS
MM-Seal showed low voids percentage and its removal was not significantly improved by supplementary irrigation techniques.
Identifiants
pubmed: 34636216
pii: S2724-6329.21.04588-5
doi: 10.23736/S2724-6329.21.04588-5
doi:
Substances chimiques
Epoxy Resins
0
Root Canal Filling Materials
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM