目的 探讨锥形束CT(CBCT)在慢 性牙周炎诊断和治疗中的应用价值。方 法 选取2015年7月-2016年7月医院就诊 的慢性牙周炎患者56例作为研究对象， 进行临床探诊，拍摄根尖X线片、CBCT， 均行牙周基础治疗，治疗后6个月再次拍 摄CBCT，比较治疗前后被测磨牙、切牙 各测量位点牙槽骨高度变化。结果 牙周 基础治疗前，CBCT、临床探诊检测后牙 区近远中牙槽骨缺损高度高于根尖X线片 (P＜0.05)，CBCT、临床探诊组间比较差 异无统计学意义(P＞0.05)；牙周基础治 疗后CBCT检测后牙区近远中牙槽骨缺损 高度较治疗前降低(P＜0.05)。牙周基础 治疗后被测磨牙、切牙各测量位点牙槽 骨高度均较治疗前降低(P＜0.05)。结论 CBCT在慢性牙周炎诊断和后期治疗中具 有较高的应用价值。

Objective To investigate the application value of cone beam CT (CBCT) in the diagnosis and treatment of chronic periodontitis. Methods A total of 56 patients with chronic periodontitis who were admitted to our hospital from July 2015 to July 2016 were selected as the study subjects. The clinical probing, X-ray and CBCT of root tip were performed. All patients received periodontal basic treatment. 6 months after treatment, CBCT was performed again, and the changes of examined molar and alveolar bone height at each measurement site before and after treatment were compared. Results Before periodontal basic treatment, the height of alveolar on the mesial and distal sides in posterior region detected by CBCT and clinical was higher than that detected by X-ray (P<0.05). There was no significant difference between CBCT and clinical probing (P>0.05). After periodontal basic treatment, the height of alveolar on the mesial and distal sides in posterior region detected by CBCT was lower than that before treatment (P<0.05). After periodontal basic treatment, the alveolar bone height measured at different sites of the molars and incisors was lower than that before treatment (P<0.05). Conclusion CBCT is of high application value in the diagnosis and treatment of chronic periodontitis.