OBJECTIVE: The objective of this study was to determine if it was possible to retain 2 mm of dentin around the periphery of root-end cavity preparations in maxillary central incisor and maxillary canine teeth. STUDY DESIGN: Thirty teeth of each type were root filled. Three millimeters of root end was resected and conservative root-end cavities ultrasonically prepared. Root ends were photographed and measured using a computer program. Teeth without 2 mm of peripheral dentin were sectioned for up to 3 further 1-mm increments. RESULTS: None of the central incisors had 2 mm of dentin remaining at the 3-mm resection level, and none of the canines had 2 mm of dentin remaining even after resecting to 6 mm. CONCLUSIONS: Recommendations to preserve 2 mm of structure around the root-end cavities of these teeth are unrealistic.
OBJECTIVE: The objective of this study was to determine if it was possible to retain 2 mm of dentin around the periphery of root-end cavity preparations in maxillary central incisor and maxillary canine teeth. STUDY DESIGN: Thirty teeth of each type were root filled. Three millimeters of root end was resected and conservative root-end cavities ultrasonically prepared. Root ends were photographed and measured using a computer program. Teeth without 2 mm of peripheral dentin were sectioned for up to 3 further 1-mm increments. RESULTS: None of the central incisors had 2 mm of dentin remaining at the 3-mm resection level, and none of the canines had 2 mm of dentin remaining even after resecting to 6 mm. CONCLUSIONS: Recommendations to preserve 2 mm of structure around the root-end cavities of these teeth are unrealistic.
Authors: P Glera-Suárez; A Pallarés-Serrano; D Soto-Peñaloza; B Tarazona-Alvarez; M Penarrocha-Diago; D Penarrocha-Oltra Journal: Med Oral Patol Oral Cir Bucal Date: 2022-07-01