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METHODS article
Front. Dent. Med
Sec. Endodontics
Volume 6 - 2025 |
doi: 10.3389/fdmed.2025.1523297
This article is part of the Research Topic Expanding Knowledge on Mineralized Tissues in Dental Science: Enamel, Dentin, and Pulp Tissue View all articles
The effect of moisture conditions and canal morphologies on the filling quality of iRoot SP with single-cone technique in root canals: An ex-vivo study
Provisionally accepted- 1 Department of Oral Implantology, Tianjin Stomatological Hospital, School of Medicine, Nankai University,Tianjin 300041,China, Tianjin, China
- 2 Tianjin Key Laboratory of Oral and Maxillofacial Function Reconstruction，Tianjin 300041, China, Tianjin, China
- 3 Department of Cariology and Endodontology, Qingdao Stomatological Hospital Affiliated to Qingdao University, Qingdao, China., Qingdao, China
- 4 Tianjin Medical University Institute of Stomatology, No.12 Qixiangtai Road, Heping District, Tianjin 300070, PR China, Tianjin, China
The purpose of this study was to investigate the effects of intraradicular moisture conditions and canal morphologies on the filling quality of iRoot SP with single-cone technique in root canals.Eighty-four human single-rooted premolars root canals were pairmatched with similar root canal volumes, aspect ratio (AR) curve shapes, and 3D models after micro-computed tomography (micro-CT) scanning to establish baseline consistency. Root canals were then prepared and assigned to 4 experimental groups with respect to the moisture condition tested: ( 1)Paper point normal drying (2)ROKEO drying (3)Paper point preliminary drying (4)Wet, followed by filling with iRoot SP single-cone technique. The effects of moisture conditions on root filling quality were studied by calculating the volume percentage of voids through micro-CT scanning and the number and score of voids under dental operating microscope (DOM) observation of the cross-sectional slices. Then classified different cross-sectional anatomical morphologies of the root canals based on the AR value and their impact on the volume percentage of voids after root canal filling were evaluated.Results: Unified the sample baseline through micro-CT pair-matching, both micro-CT and DOM provided complementary information showed that paper point normal drying and ROEKO drying displayed the lowest voids in terms of volume, number and score (P<0.05) after filling with iRoot SP single-cone technique in root canals. Further analysis revealed that the voids in different segments of the root canal under four moisture conditions ranked as coronal 1/3>middle 1/3>apical 1/3 (P<0.05). In addition, the cross-sectional AR value of the root canal was positively correlated with the volume of voids within each moisture condition(P<0.05).The intraradicular moisture conditions and cross-sectional anatomical morphology had significant effect on the filling quality of iRoot SP with single-cone technique.
Keywords: iRoot SP, Single-cone technique, Micro-computed tomography, Root canal anatomy, detine moisture
Received: 05 Nov 2024; Accepted: 27 Jan 2025.
Copyright: © 2025 Yang, Xu, Que and Zhang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
kehua Que, Tianjin Medical University Institute of Stomatology, No.12 Qixiangtai Road, Heping District, Tianjin 300070, PR China, Tianjin, China
Jian Zhang, Tianjin Medical University Institute of Stomatology, No.12 Qixiangtai Road, Heping District, Tianjin 300070, PR China, Tianjin, China
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