Shaping ability of three heat-treated NiTi systems in Vertucci’s type III root canals of mandibular incisors: An ex vivo study
Introduction: The anatomical configuration classified as Vertucci’s type III is described as the second most prevalent in mandibular incisors. Methods: Thirty-six Vertucci’s type III mandibular incisors were evaluated by micro-computed tomography (micro-CT) and divided into 3 groups (n = 12) accordi...
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Springer
2024-04-01
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| Series: | Saudi Dental Journal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1013905224000105 |
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| author | Renata Maira de Souza Leal Felipe Andretta Copelli Jáder Camilo Pinto Mario Tanomaru-Filho Marco Antonio Hungaro Duarte Bruno Cavalini Cavenago |
| author_facet | Renata Maira de Souza Leal Felipe Andretta Copelli Jáder Camilo Pinto Mario Tanomaru-Filho Marco Antonio Hungaro Duarte Bruno Cavalini Cavenago |
| author_sort | Renata Maira de Souza Leal |
| collection | DOAJ |
| description | Introduction: The anatomical configuration classified as Vertucci’s type III is described as the second most prevalent in mandibular incisors. Methods: Thirty-six Vertucci’s type III mandibular incisors were evaluated by micro-computed tomography (micro-CT) and divided into 3 groups (n = 12) according to the root canal preparation protocol (HyFlex CM [HCM], HyFlex EDM [HEDM], and Sequence Rotary File [SRF]). The teeth were scanned before and after performing 0.25 mm and 0.40 mm apical diameter preparations. The canal volume, dentin thickness, percentage of accumulated debris and untouched canal areas, transportation, and centering ability were measured. The data were statistically analyzed by ANOVA, Tukey, Kruskal-Wallis, and Dunn tests (P < 0.05). Results: The volume increase was more evident in the apical third. After 0.40 mm preparation, the SRF system provided a higher reduction (P < 0.05) in dentin thickness on the buccal surface 1 mm from the apex. There was higher canal transportation in the bucco-lingual direction. The 0.40 mm apical preparation reduced the percentage of untouched canal areas. The apical third had the highest percentage of untouched canal areas. The cervical third had the lowest volume of accumulated debris. Conclusions: Increasing the apical preparation to a diameter of 0.40 mm with the HCM, HEDM, and SRF systems in Vertucci’s type III root canals of mandibular incisors proved to be safe and effective, reducing untouched canal areas. Clinical relevance: Root flattening can be intense to the point of generating a root canal bifurcation. Despite the decrease in the root canal diameter, a greater enlargement of the apical region is necessary and safe. |
| format | Article |
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| institution | OA Journals |
| issn | 1013-9052 |
| language | English |
| publishDate | 2024-04-01 |
| publisher | Springer |
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| series | Saudi Dental Journal |
| spelling | doaj-art-b10a21bd0f58487696eb24491e4e1f942025-08-20T02:00:27ZengSpringerSaudi Dental Journal1013-90522024-04-0136456857310.1016/j.sdentj.2024.01.010Shaping ability of three heat-treated NiTi systems in Vertucci’s type III root canals of mandibular incisors: An ex vivo studyRenata Maira de Souza Leal0Felipe Andretta Copelli1Jáder Camilo Pinto2Mario Tanomaru-Filho3Marco Antonio Hungaro Duarte4Bruno Cavalini Cavenago5Department of Restorative Dentistry, Federal University of Paraná, Curitiba, Paraná, Brazil; Corresponding author at: Postgraduate Program in Dentistry, Federal University of Paraná, Av. Prefeito Lothário Meissner, n° 632, 80210-170, Curitiba, Paraná, Brazil.Department of Restorative Dentistry, Federal University of Paraná, Curitiba, Paraná, BrazilDepartment of Restorative Dentistry, School of Dentistry of Araraquara, Paulista State University, Araraquara, São Paulo, BrazilDepartment of Restorative Dentistry, School of Dentistry of Araraquara, Paulista State University, Araraquara, São Paulo, BrazilDepartment of Operative Dentistry, Endodontics and Dental Materials, School of Dentistry of Bauru, University of São Paulo, Bauru, São Paulo, BrazilDepartment of Restorative Dentistry, Federal University of Paraná, Curitiba, Paraná, BrazilIntroduction: The anatomical configuration classified as Vertucci’s type III is described as the second most prevalent in mandibular incisors. Methods: Thirty-six Vertucci’s type III mandibular incisors were evaluated by micro-computed tomography (micro-CT) and divided into 3 groups (n = 12) according to the root canal preparation protocol (HyFlex CM [HCM], HyFlex EDM [HEDM], and Sequence Rotary File [SRF]). The teeth were scanned before and after performing 0.25 mm and 0.40 mm apical diameter preparations. The canal volume, dentin thickness, percentage of accumulated debris and untouched canal areas, transportation, and centering ability were measured. The data were statistically analyzed by ANOVA, Tukey, Kruskal-Wallis, and Dunn tests (P < 0.05). Results: The volume increase was more evident in the apical third. After 0.40 mm preparation, the SRF system provided a higher reduction (P < 0.05) in dentin thickness on the buccal surface 1 mm from the apex. There was higher canal transportation in the bucco-lingual direction. The 0.40 mm apical preparation reduced the percentage of untouched canal areas. The apical third had the highest percentage of untouched canal areas. The cervical third had the lowest volume of accumulated debris. Conclusions: Increasing the apical preparation to a diameter of 0.40 mm with the HCM, HEDM, and SRF systems in Vertucci’s type III root canals of mandibular incisors proved to be safe and effective, reducing untouched canal areas. Clinical relevance: Root flattening can be intense to the point of generating a root canal bifurcation. Despite the decrease in the root canal diameter, a greater enlargement of the apical region is necessary and safe.http://www.sciencedirect.com/science/article/pii/S1013905224000105Mandibular incisorsmicro-CTDentin thicknessCanal transportationUntouched canal areas |
| spellingShingle | Renata Maira de Souza Leal Felipe Andretta Copelli Jáder Camilo Pinto Mario Tanomaru-Filho Marco Antonio Hungaro Duarte Bruno Cavalini Cavenago Shaping ability of three heat-treated NiTi systems in Vertucci’s type III root canals of mandibular incisors: An ex vivo study Saudi Dental Journal Mandibular incisors micro-CT Dentin thickness Canal transportation Untouched canal areas |
| title | Shaping ability of three heat-treated NiTi systems in Vertucci’s type III root canals of mandibular incisors: An ex vivo study |
| title_full | Shaping ability of three heat-treated NiTi systems in Vertucci’s type III root canals of mandibular incisors: An ex vivo study |
| title_fullStr | Shaping ability of three heat-treated NiTi systems in Vertucci’s type III root canals of mandibular incisors: An ex vivo study |
| title_full_unstemmed | Shaping ability of three heat-treated NiTi systems in Vertucci’s type III root canals of mandibular incisors: An ex vivo study |
| title_short | Shaping ability of three heat-treated NiTi systems in Vertucci’s type III root canals of mandibular incisors: An ex vivo study |
| title_sort | shaping ability of three heat treated niti systems in vertucci s type iii root canals of mandibular incisors an ex vivo study |
| topic | Mandibular incisors micro-CT Dentin thickness Canal transportation Untouched canal areas |
| url | http://www.sciencedirect.com/science/article/pii/S1013905224000105 |
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