Fracture Resistance of Endodontically Treated Teeth Obturated with Different Root Canal Sealers (In vitro study)

Abstract

Aim of the study: was to compare the in vitro effect of three different root canal sealers used with gutta-percha, on the fracture resistance of endodontically treated teeth. Materials and Methods: Forty extracted human single-rooted mandibular premolars were used for the study. Teeth were decoronated to a standard root length of 14 mm. MPro rotary files up to master rotary size 25/6% were used for preparing the root canals. Teeth were randomly divided into five groups (n = 8 each) based on the type of root canal sealers used and the obturation was completed using gutta-percha; Group I: AH Plus root canal sealer, Group II: Endoseal MTA sealer, Group III: Bioroot RCS sealer, Group IV: Control-1 (prepared-unfilled) and Group V: Control-2 (unprepared-unfilled). Each specimen was embedded in acrylic mold and subjected to fracture resistance test using a universal testing machine under compressive loading at a rate of 1.0 mm/min until fracture. The force required to fracture each specimen was recorded and the data obtained were statistically analyzed (analysis of variance (ANOVA) and paired-t test) with level of significance set at p ≤ 0.05. Results: The unprepared-unfilled group showed the highest mean fracture resistance followed by AH Plus group, Bioroot RCS group, then the Endoseal MTA group. While the prepared-unfilled group showed the least mean fracture resistance. There was no statistically significant difference between all groups. Conclusion: It could be concluded that Bioroot RCS and Endoseal MTA are able to reinforce the tooth against fracture as good as AH Plus.

fracture resistance of two different sealers (in vitro study)

“…The results of our study came in accordance with Saba and ElAsfouri (28) who showed that teeth filled with AH Plus had a higher resistance to fracture than Bioroot and Endoseal MTA. This finding was in full agreement with Mandava et al (30) , who showed that teeth obturated with AH Plus had a higher fracture resistance than those with the Meta seal and MTA Fillapex.…”

“…This would result in decreased bending moments and maximum stresses located much more cervical, leading to smaller stresses. This study design is believed to mimic the clinical status, as it immitates the support given to teeth by alveolar bone (28) . This testing technique is similar to the one used by Sedgley and Messer (29) to test the brittleness of endodontically treated teeth.…”

Evaluation of the Effect of Three Root Canal Sealers on the Fracture Resistance of Endodontically Treated Teeth: A Comparative Study

“…Endodontic treatment's major purpose, in addition to treating the infected pulp, is to reinforce the remaining tooth structure 12 . Instrumentation of the root canals is a necessary step in endodontic treatment.…”

An in vitro comparison of fracture resistance of immature teeth subjected to apexification using three different bioactive materials

“…11 To simulate immature teeth, the canals were instrumented with Peeso reamers (#1-#5) until a size 5 Peeso was passed 1 mm beyond the apex to simulate open apex. Here we have performed apex enlargement upto Peeso reamer 5 (1.5mm) 12 13 Stuart et al, 14 Tanalp et al, 15 and Seto et al 16 used a similar methodology for preparation of root canals. 1 The samples were then embedded in acrylic resin blocks for homogenous stress distribution and PDL simulation was done with Condensation silicone impression material to approximate the clinical scenario.…”