Tooth structures can become compromised due to decay, fractures, or functional wear. In some cases, the cumulative damages result in inadequate tooth structure to restore a tooth adequately and predictably (such as with a crown or fillings). A restorative crown-lengthening procedure can be performed to expose more tooth structure for the required restoration.
Figure A: Patient presented with recurrent decay/cavities under her existing crowns.
Figure B: The treatment plan involved fabricating new crowns. In order to remove all the decay successfully, to prevent soft tissue irritation, and to allow better crown retention, the clinical crowns were lengthened.
Figure C: Final restorations.
圖 A: 病人反复提出衰變/她現有冠下腔..
圖 B: 治療計劃涉及製造新的冠冕。為了成功地刪除所有的衰減，以防止軟組織發炎，並能更好地保留冠，臨床牙冠被延長。
圖 C: 最終修復體