School of Dentistry, Universidade Federal de Campina Grande (UFCG), Patos, Paraíba, Brazil.
Post-Graduation Program in Dentistry, Universidade Federal de Uberlândia (UFU), Uberlândia, Minas Gerais, Brazil.
Eur J Dent Educ. 2024 Nov;28(4):1052-1057. doi: 10.1111/eje.13041. Epub 2024 Sep 18.
This study assessed the radiographic technical quality of root fillings in single-canal teeth performed over a decade (June 2013 to June 2023) by undergraduate dental students of the Federal University of Campina Grande.
All teeth underwent chemomechanical preparation using Gates-Glidden drills and hand instrumentation with stainless steel files up to 1 mm short of the root apex. Apical expansion was performed with up to two or three instruments above the initial anatomical apical diameter. The canal was filled in the absence of signs and symptoms of infection using gutta-percha cones and Sealer 26 or MTA Fillapex. A post-filling radiograph was routinely taken to assess the quality of root filling and coronal restoration. An experienced researcher trained and calibrated an examiner to evaluate post-operative periapical radiographs considering root-filling length, lateral adaptation and taper using ImageJ 1.52q software. Root filling was satisfactory when reaching acceptable classifications for the three parameters. The chi-squared test compared tooth type, dental arch and pulpal diagnosis at a 5% significance level.
The study assessed 124 canals, showing 90 (72.6%) satisfactory root fillings. The sub-analysis of individual parameters demonstrated that 105 (84.7%) root fillings had acceptable length, 113 (91.1%) adapted well to lateral canal walls, and 109 (87.9%) had proper taper. Most cases occurred in maxillary teeth (n = 99), pulp necrosis was the most frequent pulpal diagnosis (n = 89), and root-filling quality showed no association with tooth type, dental arch or pulpal diagnosis.
The technical quality of root fillings in single-canal teeth treated by dental students was predominantly satisfactory.
本研究评估了近十年（2013 年 6 月至 2023 年 6 月）由坎皮纳格罗联邦大学牙科学员完成的单根管牙齿根管充填的放射技术质量。
所有牙齿均采用 Gates-Glidden 钻和不锈钢锉进行化学机械预备，锉至根尖 1mm 以内。根尖扩展使用比初始解剖根尖直径大 2 至 3 个器械。在无感染迹象和症状的情况下，使用牙胶尖和 Sealer 26 或 MTA Fillapex 进行根管充填。常规拍摄根管充填后 X 光片，以评估根管充填和冠部修复的质量。一名经验丰富的研究人员培训并校准了一名检查者，使用 ImageJ 1.52q 软件评估术后根尖 X 光片，以评估根充长度、侧方适应性和锥度。当达到三个参数的可接受分类时，根充被认为是满意的。采用卡方检验比较 5%显著性水平下的牙位、牙弓和牙髓诊断。
本研究共评估了 124 个根管，其中 90 个（72.6%）根充满意。对个别参数的亚分析表明，105 个（84.7%）根充长度可接受，113 个（91.1%）与侧根管壁适应良好，109 个（87.9%）具有适当的锥度。大多数病例发生在上颌牙齿（n=99），牙髓坏死是最常见的牙髓诊断（n=89），根充质量与牙位、牙弓或牙髓诊断无关。
牙科学员治疗的单根管牙齿根管充填的技术质量主要是令人满意的。
