Partial coverage restoration | Full coverage crown |
1. Removing the destructed tooth structure by following the outline of the defective area and old restoration. 2. The supragingival margin is common ensuring - less danger to the periodontal tissue [1] , - finishable margin [10] , - daily cleanable margin, - easy check up and detection of dental caries. 3. Remaining tooth structure used as a guide to create physiologic tooth contour [2] and [5] . 4. Requiring an efficient adhesive system [7] . | 1. Removing the circumferential tooth structure.
2. The gingival-level margin is common, but - may be harmful to the periodontal tissue, - difficult to access to finish the margin, - difficult to access for daily cleaning, - difficult to check up and detect the dental caries. 3. Suitable when needing to change the occlusion or alignment of the tooth [10] .
4. Conventional luting cement is sufficient [10] . |