Saunders W P, Saunders E M
University of Glasgow Dental School.
Br Dent J. 1998 Aug 8;185(3):137-40. doi: 10.1038/sj.bdj.4809750.
To examine the periradicular status of crowned teeth in an adult population in Scotland.
Examination of full-mouth periapical radiographs from 319 consecutive adult patients (7596 teeth) attending Glasgow and Dundee Dental Hospitals for clinical examination.
The periradicular status of teeth with a crown present was assessed to determine the presence of a radiolucency which may indicate pulpal disease.
63.3% (n = 202) of patients had at least one tooth that was crowned. The total number of crowns assessed was 802, of which 458 (57.1%) were vital preparations, and 87 (19.0%) of these had radiographic signs of periradicular disease. The majority of the teeth (62.0%) had distinct widening of the periodontal membrane space which is considered to be an early sign of periapical disease. 42.9% (n = 344) of the crowned teeth had previous root canal treatment of which 50.8% (175) had evidence of a periradicular radiolucency.
Pulpal damage may occur during procedures to provide a crown which may require subsequent root canal treatment. Radiographic follow-up of crowned teeth should be undertaken routinely.
研究苏格兰成年人群中戴冠牙齿的根尖周状况。
对连续319例成年患者（共7596颗牙齿）在格拉斯哥和邓迪牙科医院进行临床检查时拍摄的全口根尖片进行检查。
评估有冠牙齿的根尖周状况，以确定是否存在可能提示牙髓疾病的透射区。
63.3%（n = 202）的患者至少有一颗牙齿戴冠。评估的冠总数为802个，其中458个（57.1%）为活髓预备牙，其中87个（19.0%）有根尖周疾病的影像学表现。大多数牙齿（62.0%）的牙周膜间隙明显增宽，这被认为是根尖周疾病的早期迹象。42.9%（n = 344）的戴冠牙齿曾接受过根管治疗，其中50.8%（175个）有根尖周透射区的证据。
在提供牙冠的过程中可能发生牙髓损伤，这可能需要后续的根管治疗。应对戴冠牙齿进行常规的影像学随访。
