ABSTRACT
Background Mineral trioxide aggregate (MTA) is a biocompatible dental material used for root-end filling in endodontics. A wide variety of literature has been published on the assessment of fracture resistance of MTA. However, the results were conflicting in the reported studies, and the sample size used was insufficient to conclude the efficacy of materials such as MTA Plus and MTA Angelus. Therefore, this study was designed to compare and evaluate the effectiveness of two commercially available MTAs, namely, MTA Plus (Avalon Biomed Inc. by Prevest Denpro Ltd, Jammu, India) and MTA Angelus (Angelus Dental Solutions, Brazil) in terms of fracture resistance. Methodology To determine fracture resistance, 300 freshly extracted healthy human teeth with single roots and canals were collected by simple random sampling. Teeth were decoronated, the apical third was enlarged, and root canals were prepared to receive MTA as a 5 mm apical filling. The root segments were randomly categorized into two experimental groups of 100 samples each, namely, group A (MTA Plus) and group B (MTA Angelus), and the remaining 100 root segments were used as control (unfilled). Fracture resistance was determined using the Instron Universal testing machine. Results The results of our study showed statistically significant increased fracture resistance for MTA Plus (532.14 ± 5.19 N) than MTA Angelus (540.81 ± 3.56 N) and the control group (460.63 ± 7.91 N). Conclusions The control group showed the least fracture resistance. The composition and structure of MTA Angelus (group B) containing Portland cement, with a 4:1 addition of bismuth oxide, make it more fracture resistant than MTA Plus (group A).
ABSTRACT
BACKGROUND: The chances of extrusion of mineral trioxide aggregate (MTA) are quite high if apical barrier is not present in immature pulpless permanent teeth. Platelet-rich fibrin (PRF) enriched with platelets and growth factors serves to accelerate the wound healing of periapical lesion in immature pulpless permanent teeth and also serves as internal matrix to condense MTA. AIM: The aim of the present study was to comprehensively review the clinical success of MTA+PRF in healing of periapical lesions in immature pulpless permanent teeth. MATERIALS AND METHODS: An electronic search for systematic review was conducted in Pubmed/Medline (www.ncbi.nlm.nih.gov), Cochrane (www.cochrane.org), Scopus (www.scopus.com) databases upto 15th January 2020 related to the healing of periapical lesions in permanent teeth with immature apices when combination of MTA+PRF was used. A sample of 10 relevant studies and case reports were identified in our search out of 65. The sampling method was simple random technique. The studies and case reports with Randomised Controlled Trials(RCTs), Invitro studies, Case reports and animal studies in healing of periapical lesion were included in our comprehensive systematic review. RESULTS: The search showed that the combination of MTA+PRF showed faster and definite periapical lesion healing in immature permanent teeth. The follow-up period was also recorded in all the relevant studies and case reports. CONCLUSION: Acclerated bone filling was seen in healing of periapical leions when MTA+PRF was used.
