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.
Aim of the study: The aim of this study was to compare the adaptation of two calcium silicatebased root canal sealers with a resin-based sealer to root canal walls at the middle and apical levels using scanning electron microscope. Material and methods: Twenty-six single-canalled lower premolars were instrumented and randomly divided into three groups according to the sealer used with gutta-percha (n=8); AH plus, Bioroot RCS, and Endoseal MTA. Two random specimens served as the blank control group to assess the smear layer removal from the dentinal walls. Teeth were sectioned at middle and apical levels and gap width was evaluated using scanning electron microscope. Data were statistically analyzed with significance level set at p ≤ 0.05. Results: At the apical and mid-root levels, the highest mean values were found in Endoseal MTA group followed by Bioroot RCS group while the lowest mean value was found in AH Plus group with statistically significant difference between all groups. Statistically significant differences were found between Endoseal MTA and each of Bioroot RCS and AH Plus groups. No statistically significant difference was found between Bioroot RCS and AH Plus groups. Conclusions: AH Plus and Bioroot RCS showed statistically better results than Endoseal MTA regarding adaptation to the root canal walls.
Objective: Quantitative assessment of apically extruded debris and retreatability of two sealers using two rotary retreatment systems Methodology: Two NiTi rotary file systems; ProTaper Universal (PT) retreatment files (Dentsply-Maillefer, Ballaigues, Switzerland) and Mtwo R retreatment (MT) rotary files (Sweden and Martina, Padova, Italy) and two sealers; AH Plus (Dentsply International Inc., York, PA, USA) and SmartPaste Bio (DRFP Ltd., Stamford, UK) were used in this study. The root canals of 40 single-rooted human premolar teeth having nearly similar length were prepared. The prepared root canals were obturated with gutta-percha and either AH Plus or Smart Paste Bio sealers (n=20/ group). Each group was then subdivided into two subgroups (n = 10 lsubgroup) according to whether the root filling material was removed using either Protaper Universal retreatment or MTwo Retreatment Kit. After retreatment, the apically extruded debris was collected in Eppendorf tubes which were weighed before and after retreatment with an electronic balance. The retreatability of the both sealers was assessed using CBCT imaging by calculating the volume of the residual filling material post-treatment in the middle and apical thirds of the root canals. Results were statistically analyzed using one-way-analysis-of-variance; (P<0.05). Results: Statistically, there was no significant difference in the weight of collected apically extruded debris nor in in the remaining volume of the obturating materials between all groups (P=0.849 and P=0.8831), respectively. Conclusions: All investigated retreatment techniques caused debris extrusion and left filling remnants inside the root canals. SmartPaste Bio sealer is as retreatable as AH Plus sealers.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.