Abstract: Objective: To study the effect of faced-ceramic onlay on tooth wedge-shaped defect repair in order to provide basic methods for clinical research. Chose the 32 patients repaired the tooth. And 36 teeth as the research object were repaired with ceramic onlay with semimetamic. After 6 and 12 months, to observe the patients’ tooth color, repair degree and so on. The repairing rate was up to 100% after 12 months. 9 evaluation indexs are good. Conclusion: ceramic onlay with semimetamic is effective to repair the wedge shaped defect of the teeth.

Key words: Teeth repair, Wedge-Shaped defect, Ceramic onlay with semimetamic