M Torabinejad1, S M Moazzami2, H Moaddel1, J Hawkins3, C Gustefson4, H Faras5, K Wright6, S Shabahang1. 1. Department of Endodontics, Loma Linda University, Loma Linda, CA, USA. 2. Department of Endodontics, Mashad University, Mashad, Iran. 3. Private Practice, Kennewick, WA, USA. 4. Private Practice, Chico, CA, USA. 5. Department of Endodontics, Kuwait University, Kuwait City, Kuwait. 6. Department of Anatomy, Loma Linda University, Loma Linda, CA, USA.
Abstract
AIM: To examine the effect of reduction in MTA particle size on dento-alveolar and osseous healing in dogs. METHODOLOGY: Root canals of 24 mandibular premolars in four 2-year-old beagles were prepared and filled with gutta-percha and sealer. Two to four weeks later, during periapical surgery, the root-end cavity preparations in these teeth were filled with either grey ProRoot MTA or modified (reduced particle sizes with faster setting time) MTA. The animals were sacrificed 4 months later. Degrees of inflammation, type of inflammatory cells, fibrous connective tissue adjacent to the root-end filling materials, cementum formation over the resected roots and root-end filling materials and bone healing were examined. Data were analysed using the McNemar test. RESULTS: No significant differences in healing of periapical tissues were found when comparing ProRoot MTA to a modified MTA containing reduced particle sizes. CONCLUSION: Reducing the particle sizes of MTA did not impact its biological properties.
AIM: To examine the effect of reduction in MTA particle size on dento-alveolar and osseous healing in dogs. METHODOLOGY: Root canals of 24 mandibular premolars in four 2-year-old beagles were prepared and filled with gutta-percha and sealer. Two to four weeks later, during periapical surgery, the root-end cavity preparations in these teeth were filled with either grey ProRoot MTA or modified (reduced particle sizes with faster setting time) MTA. The animals were sacrificed 4 months later. Degrees of inflammation, type of inflammatory cells, fibrous connective tissue adjacent to the root-end filling materials, cementum formation over the resected roots and root-end filling materials and bone healing were examined. Data were analysed using the McNemar test. RESULTS: No significant differences in healing of periapical tissues were found when comparing ProRoot MTA to a modified MTA containing reduced particle sizes. CONCLUSION: Reducing the particle sizes of MTA did not impact its biological properties.
Authors: Antônio L B Pinheiro; Luiz G P Soares; Aline C P da Silva; Nicole R S Santos; Anna Paula L T da Silva; Bruno Luiz R C Neves; Amanda P Soares; Marleny Elizabeth M M Gerbi; Jean Nunes Dos Santos Journal: Lasers Med Sci Date: 2020-06-24 Impact factor: 3.161