Ridell Karin, Petersson Arne, Matsson Lars, Mejàre Ingegerd
Department of Paediatric Dentistry, Malmö University, Malmö, Sweden.
Acta Odontol Scand. 2006 Apr;64(2):104-10. doi: 10.1080/00016350500367637.
The aim was to study periapical status and the technical quality of root-filled teeth in Swedish adolescents and young adults in Malmö, Sweden.
The sample, collected from dental records in the Public Dental Service, consisted of notes and radiographs of all root-filled permanent teeth in all 19-year-olds born in 1979 (mean age at root filling=16.2 years). The sample for assessing periapical status and technical quality consisted of 124-153 teeth. The criterion for inclusion for assessing periapical status was a follow-up time of at least one year. Periapical status was assessed with the Periapical Index (PAI). Technical quality was analyzed from radiographs in two respects: sealing quality of the root canal and distance from the root filling to the radiographic apex. The radiographs were analyzed independently by two observers with inter-examiner kappa values of 0.82-0.85.
Apical periodontitis was found in 52% of the teeth and occurred significantly more often among molars than among anterior teeth. As judged radiographically, 51% of the teeth were inadequately sealed. In 38%, the distance to the apex was >2 mm and overfilling was registered in 14% of the teeth. Compared with anterior teeth, significantly more root fillings of molars had a distance to the apex of >2 mm. Technical quality was statistically significantly correlated with periapical status at follow-up.
The technical quality and periapical status of root-filled teeth in adolescents and young adults were unsatisfactory in about half of the teeth.
研究瑞典马尔默青少年和青年恒牙根管充填后的根尖周状况及技术质量。
样本取自公共牙科服务机构的牙科记录,包括1979年出生的所有19岁人群(根管充填时平均年龄 = 16.2岁)所有根管充填恒牙的记录和X光片。用于评估根尖周状况和技术质量的样本包含124 - 153颗牙齿。评估根尖周状况的纳入标准是随访时间至少一年。根尖周状况采用根尖周指数(PAI)进行评估。从X光片分析技术质量的两个方面:根管的封闭质量以及根管充填物到根尖影像的距离。两名观察者独立分析X光片,检查者间kappa值为0.82 - 0.85。
52%的牙齿发现有根尖周炎,磨牙的发生率显著高于前牙。经X光片判断,51%的牙齿封闭不充分。38%的牙齿根管充填物到根尖的距离大于2mm,14%的牙齿存在超充情况。与前牙相比,磨牙根管充填物到根尖距离大于2mm的情况显著更多。技术质量与随访时的根尖周状况在统计学上显著相关。
青少年和青年恒牙根管充填后的技术质量和根尖周状况在约半数牙齿中不尽人意。