Shetty Krishna Prasad, Satish S V, Luke Alexander M, Badade Abhishek Rajpal, Kilaru Krishna Rao
Department of Restorative, Ajman University, Ajman, UAE.
Department of Conservative Dentistry and Endodontics, Navodaya Dental College, Raichur, Karnataka, India.
J Int Soc Prev Community Dent. 2018 Nov-Dec;8(6):503-507. doi: 10.4103/jispcd.JISPCD_436_17. Epub 2018 Nov 29.
To evaluate the apical fill in relation to apical leakage using three different obturating techniques - Single Cone, Ultrafil 3D, and lateral condensation.
Sixty-six mandibular single-rooted premolar teeth were selected and were randomly assigned into three different groups of obturating techniques. The canals were prepared using 0.4/25 HyFlex CM (Coltene Endo) rotary system file and obturated with corresponding HyFlex CM Single Cone, Ultrafil 3D injectable technique, and lateral condensation. AH Plus (Dentsply, Detrey) has been used as the sealer. Twenty teeth each were assigned to the three experimental groups, and six teeth were used as positive and negative controls (3 in each group). Fluid filtration technique was used to determine the amount of apical leakage. The evaluation was done for 8 min at the interval of every 2 min. The same teeth were sectioned and a spectroscopic examination was done at 2 mm and 4 mm distance from the apices. The obtained data were statistically analyzed using analysis of variance test followed by turkeys test for multiple comparisons.
The mean apical leakage was maximum for lateral condensation when compared to the Single Cone and Ultrafil 3D. The amount of apical fill at 2 mm and at 4 mm was found to be more in the Single Cone than the other two techniques.
The present study concluded that Single Cone obturation technique exhibited more gutta-percha filled area in the canal which led to decreased apical leakage than Ultrafil 3D and lateral condensation techniques, proving to be more effective in achieving a complete three-dimensional apical seal.
使用三种不同的根管充填技术——单尖法、Ultrafil 3D技术和侧方加压法，评估根尖充填与根尖微渗漏的关系。
选取66颗下颌单根前磨牙，随机分为三组，采用不同的根管充填技术。根管预备使用0.4/25 HyFlex CM（登士柏·西诺德公司）旋转系统锉，并分别采用相应的HyFlex CM单尖法、Ultrafil 3D注射技术和侧方加压法进行充填。AH Plus（登士柏·德瑞公司）用作根管封闭剂。每组20颗牙作为实验组，6颗牙作为阳性和阴性对照（每组各3颗）。采用流体过滤技术测定根尖微渗漏量。每隔2分钟评估8分钟。将相同的牙齿进行切片，并在距根尖2mm和4mm处进行光谱检查。所得数据采用方差分析，随后进行Turkey检验进行多重比较。
与单尖法和Ultrafil 3D技术相比，侧方加压法的平均根尖微渗漏量最大。发现单尖法在2mm和4mm处的根尖充填量比其他两种技术更多。
本研究得出结论，单尖充填技术在根管内表现出更多的牙胶充填区域，与Ultrafil 3D技术和侧方加压法相比，根尖微渗漏减少，证明在实现完整的三维根尖封闭方面更有效。
