Abstract
The clinical effect of feldspar ceramics and lithium disilicate reinforced glass ceramics was studied. 57 affected teeth with complete root canal treatment and computer aided design/computer aided manufacturing (CAD/CAM) endocrown restoration were reviewed 24-36 months aftercompletion of the restoration. These dimensions including anatomical morphology, proximal contact , color matching, edge integrity, edge coloring, secondary caries, kinesthetic occlusion relationship, and periodontal health of the affected teeth by the modified clinical scoringcriteriafor United States Public Health Service (USPHS) were evaluated, and the patients’ satisfaction was recorded. The 57 affected teeth were divided into feldspar group and lithium disilicate reinforced ceramic group according to the different repair materials, and the statistical results are analyzed. The experimental results show medullary fixation crown can be used to repair a large area of dental defects after root canal treatment.
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