Universitat de València Clínica Odontológica, Unidad de Cirugía Bucal Gascó Oliag 1, 46010, Valencia, Spain
Med Oral Patol Oral Cir Bucal. 2022 Jul 1;27(4):e383-e391. doi: 10.4317/medoral.25314.
An analysis was made of the correlation between root width, the thickness of the remaining dentinal wall as determined by endoscopy, and the outcome of periapical surgery.
A retrospective cohort study was carried out involving patients subjected to periapical surgery between 2017 and 2019 at the University of Valencia (Valencia, Spain). One year after surgery, cone-beam computed tomography (CBCT) was used to evaluate healing against the preoperative volumes. The maximum root width was measured on the postoperative CBCT scan at the apical section of the treated root. This measurement was transferred to the intraoperative endoscopic image, where the minimum root width, peripheral dentin thickness, and minimum dentin thickness were recorded. Root measurements, and the position (maxillary or mandibular) and type of tooth (roots of incisors, canines, premolars or molars) were further correlated to periapical surgery outcome.
A total of 51 patients, comprising 52 teeth and 62 roots, were included in the study. The mean measurements were: maximum root width (4.13±0.84 mm), minimum root width (2.46±0.72 mm), peripheral dentin thickness (0.77±0.2 mm) and minimum dentin thickness (0.4±0.2 mm). The success rate was 82.2%. Premolar roots showed a greater minimum dentin thickness (0.58±0.25 mm) (p<0.003) than incisor roots. No significant association was found between the different measurements and the healing rate at one year, though the roots that failed to heal showed smaller minimum dentin thickness values than the roots that healed correctly. The position and type of tooth did not influence healing outcome.
The root width and thickness of the remaining dentin wall did not significantly influence healing. However, the roots that failed to heal showed smaller minimum dentin thickness values than the roots that healed correctly.
分析了根管宽度、内窥镜下测量的剩余牙本质壁厚度与根尖手术结果之间的相关性。
对 2017 年至 2019 年期间在西班牙瓦伦西亚大学（Valencia）接受根尖手术的患者进行了回顾性队列研究。术后 1 年，采用锥形束 CT（CBCT）对术前容积进行术后评估。在治疗根的根尖部分的术后 CBCT 扫描上测量最大根宽。将此测量值转移到术中内窥镜图像上，记录最小根宽、周边牙本质厚度和最小牙本质厚度。进一步将根测量值与根尖手术结果以及牙齿的位置（上颌或下颌）和类型（切牙、尖牙、前磨牙或磨牙的根）相关联。
共纳入 51 名患者，共 52 颗牙和 62 个根。平均测量值为：最大根宽（4.13±0.84mm）、最小根宽（2.46±0.72mm）、周边牙本质厚度（0.77±0.2mm）和最小牙本质厚度（0.4±0.2mm）。成功率为 82.2%。前磨牙根的最小牙本质厚度（0.58±0.25mm）（p<0.003）大于切牙根。然而，在一年时，不同的测量值与愈合率之间没有显著相关性，但未愈合的根的最小牙本质厚度值小于正确愈合的根。牙齿的位置和类型也没有影响愈合结果。
根管宽度和剩余牙本质壁厚度并未显著影响愈合。然而，未愈合的根的最小牙本质厚度值小于正确愈合的根。
