Comparison of Fracture Resistance of Mandibular Incisor Restored with Porcelain Veneers and All-ceramic Crowns after Root Canal Treatment

doi:10.13701/j.cnki.kqyxyj.2020.03.019

Abstract

Abstract: Objective: To compare the fracture resistance of mandibular incisor restored with porcelain veneers and all-ceramic crowns after root canal treatment. Methods: Thirty isolated mandibular incisors were selected and treated by external root canal treatment. After 3M fiber post reinforcement, they were randomly divided into three groups. The porcelain veneer group and the all-ceramic crown group were restored with IPS e.max Press. The resin filling group was directly filled with composite resin. The fracture resistances of three groups were tested with a universal material testing machine. Results: The fracture resistances of porcelain veneer group, all-ceramic crown group, and direct filling group were (439.59±56.97) N, (719.98±43.03) N, and (597.74±50.35) N, respectively (P<0.001). Conclusion: After root canal treatment, the mandibular incisors restored with all-ceramic crown had higher fracture resistance. Both all-ceramic crown and veneer can meet the requirements of clinic.

Key words: mandibular incisor, ceramic veneer, all ceramic crown, fracture resistance

CHEN Shiwei, WU Xiaohong. Comparison of Fracture Resistance of Mandibular Incisor Restored with Porcelain Veneers and All-ceramic Crowns after Root Canal Treatment[J]. Journal of Oral Science Research, 2020, 36(3): 269-272.

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