Apical negative pressure-enhanced sealer infiltration for obturating long oval-shaped root canals with the single-cone technique

IF 4.8 2区医学 Q1 DENTISTRY, ORAL SURGERY & MEDICINE

Journal of dentistry Pub Date : 2025-06-11 DOI:10.1016/j.jdent.2025.105909

Yaxu Feng , Brian E. Bergeron , Shijin Zhang , Danyang Sun , Kole Fisher , Franklin R. Tay , Bing Fan

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引用次数: 0

Abstract

Objectives

This study evaluated the effect of apical negative pressure sealer infiltration on void percentage, void types, porosity size distribution, and coronal microleakage in root canal fillings using different hydraulic calcium silicate sealers with the single-cone technique.

Methods

Forty-eight extracted premolars with long oval-shaped canals were selected and divided into four groups based on the filling technique and sealer (n = 12): apical negative pressure-assisted NeoSEALER Flo (NPNF), apical negative pressure-assisted iRoot SP (NPS), syringe-assisted NeoSEALER Flo (SNF), and syringe-assisted iRoot SP (SS), all using the single-cone technique. Micro-computed tomography (10 µm resolution) was used to scan the obturated canals. Void percentages, types, and porosity size distribution were analyzed. Statistical significance was set at α = 0.05.

Results

None of the techniques yielded void-free obturations. However, the NPNF (0.75 %, interquartile range 0.93 %) and NPS (0.42 %, IQR 0.68 %) groups showed significantly lower overall void percentages than the SNF (13.27 %, IQR 9.24 %) and SS (15.39 %, IQR 13.87 %) groups (p < 0.05). No significant difference was identified between the NPNF and NPS groups, or between the SNF and SS groups. Apical negative pressure groups also demonstrated significantly fewer open voids and large porosities and reduced microleakage compared to the syringe-assisted groups (p < 0.05).

Conclusion

Apical negative pressure sealer infiltration combined with the single-cone technique significantly improved filling quality and reduced coronal microleakage in long oval-shaped root canals compared to the conventional syringe-assisted single-cone technique.

Clinical.significance

The use of apical negative pressure for introducing hydraulic calcium silicate sealers during single-cone obturation improves the quality of root canal fillings by reducing the percentage of voids and the presence of large porosities.

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根尖负压增强封闭剂浸润用于单锥技术封闭长椭圆形根管。

目的：研究不同硅酸钙水力学单锥封堵剂对根管充填中空隙率、空隙类型、孔隙大小分布及冠状微渗漏的影响。方法：选择48颗已拔出的椭圆形长根管前磨牙，根据充填方式和充填方式分为4组（n = 12）：根尖负压辅助NeoSEALER Flo （NPNF）组、根尖负压辅助iRoot SP （NPS）组、注射器辅助NeoSEALER Flo （SNF）组和注射器辅助iRoot SP （SS）组，均采用单锥充填技术。采用微计算机断层扫描（10µm分辨率）对封闭管进行扫描。分析了孔隙率、类型和孔隙尺寸分布。统计学意义为α = 0.05。结果：没有一种方法可以实现无腔封闭。NPNF组（0.75%，四分位间距0.93%）和NPS组（0.42%,IQR 0.68%）的总空洞率显著低于SNF组（13.27%,IQR 9.24%）和SS组（15.39%,IQR 13.87%）（p < 0.05）。NPNF组和NPS组、SNF组和SS组之间无显著差异。与注射器辅助组相比，根尖负压组的开放空隙和大孔隙也明显减少，微渗漏也明显减少（p < 0.05）。结论：与传统的注射器辅助单锥技术相比，根尖负压封闭剂浸润联合单锥技术可显著提高长椭圆形根管充填质量，减少冠状微渗漏。临床意义：采用根尖负压引入液压硅酸钙封闭器进行单锥封闭，通过减少空隙的百分比和大孔隙的存在，提高了根管充填的质量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of dentistry 医学-牙科与口腔外科

CiteScore

7.30

自引率

11.40%

发文量

349

审稿时长

35 days

期刊介绍： The Journal of Dentistry has an open access mirror journal The Journal of Dentistry: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. The Journal of Dentistry is the leading international dental journal within the field of Restorative Dentistry. Placing an emphasis on publishing novel and high-quality research papers, the Journal aims to influence the practice of dentistry at clinician, research, industry and policy-maker level on an international basis. Topics covered include the management of dental disease, periodontology, endodontology, operative dentistry, fixed and removable prosthodontics, dental biomaterials science, long-term clinical trials including epidemiology and oral health, technology transfer of new scientific instrumentation or procedures, as well as clinically relevant oral biology and translational research. The Journal of Dentistry will publish original scientific research papers including short communications. It is also interested in publishing review articles and leaders in themed areas which will be linked to new scientific research. Conference proceedings are also welcome and expressions of interest should be communicated to the Editor.