Original scientific paper
https://doi.org/10.15644/asc59/4/2
Root Canal Obturation Quality in 3D-Printed C-Shaped Canals with Different Filling Techniques
Di Fu
; State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Conservative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
Yanyao Li
; State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Conservative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
Yuwei Wang
; State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Conservative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
Lin Yao
; State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Conservative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
Ge Zhou
; State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Conservative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
Yunwo Zhu
; State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Geriatric Dentistry, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China
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Ling Zou
; State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & Department of Conservative Dentistry and Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, China.
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* Corresponding author.
Abstract
Objectives: This study aimed to assess the quality of canal obturation in 3D-printed C-shaped canals using Micro-CT and dye penetration with different filling techniques. Methodology: Sixty 3D-printed teeth with C-shaped canals were obturated using: AH Plus with continuous wave (AHCW), iRoot SP with single cone (SPSC) and iRoot SP with continuous wave (SPCW). Micro-CT was used for 3D reconstruction in two regions: 0~8 mm (overall canal) and 0~3 mm (apical segment). The volume of voids (V1) and total canal volume (V) were used to calculate porosity as (V1/V) × 100%. Sealing quality was assessed by dye penetration. Results: Results showed that AHCW exhibited significantly lower porosity within 8 mm (5.17%) compared to SPSC (9.02%) and SPCW (8.55%), (P < 05). No significant porosity differences were observed within 3 mm or in dye penetration. Conclusion: AHCW achieved better obturation in the middle and upper segments, with no significant differences among techniques in the apical segment.
Keywords
Root Canal Preparation; Three-Dimensional Printing; Root Canal Obturation; C-shaped canal; Root canal filling; Continuous wave obturation technique; Single-cone obturation technique; 3D-printed resin teeth
Hrčak ID:
341913
URI
Publication date:
26.12.2025.
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