Julia Godoi Lopes, Jeneffer Vieira Rodrigues, Iago Ramirez, Rafael Verardino de Camargo, Graziela Bianchi Leoni, Manoel Damião Sousa-Neto, Fabiane Carneiro Lopes-Olhê, Jardel Francisco Mazzi-Chaves
{"title":"热处理器械在扁平和弯曲根管内生物力学性能的显微层析分析。","authors":"Julia Godoi Lopes, Jeneffer Vieira Rodrigues, Iago Ramirez, Rafael Verardino de Camargo, Graziela Bianchi Leoni, Manoel Damião Sousa-Neto, Fabiane Carneiro Lopes-Olhê, Jardel Francisco Mazzi-Chaves","doi":"10.1016/j.joen.2024.12.012","DOIUrl":null,"url":null,"abstract":"<p><strong>Introduction: </strong>This study aimed to evaluate, using microcomputed tomography, the impact of various mechanized systems on the geometry of the root canal system and dentin thickness in mandibular first molars. The hypothesis proposed that different systems would produce significant variations in root canal system preparation.</p><p><strong>Methods: </strong>Mesial and distal canals of mandibular molars were selected and divided into 5 groups (n = 10) based on the system used: 2Shape (25.06), Reciproc Blue (25.08), ProTaper Ultimate (25.08), ProTaper Next (25.06), and Univy New (25.06). Biomechanical preparation was performed following each manufacturer's instructions. Microcomputed tomography scans were conducted before and after preparation to assess 3-dimensional parameters (volume, surface area, Structural Model Index, and prepared root canal walls) and 2-dimensional parameters (area, perimeter, diameters, roundness, and transportation).</p><p><strong>Results: </strong>ProTaper Ultimate exhibited the greatest volume increase in mesial canals (1.73 ± 0.19), while ProTaper Next demonstrated the highest increase in distal canals (1.95 ± 0.25). Furthermore, ProTaper Ultimate resulted in the greatest dentin removal and the largest postpreparation area. Reciproc Blue achieved the best results for roundness and had the lower unprepared walls (15.3 ± 6.97).</p><p><strong>Conclusions: </strong>All systems produced comparable outcomes, with ProTaper Ultimate yielding the greatest volume increase and dentin removal, indicating a less conservative preparation. Reciproc Blue provided optimal roundness and minimized unprepared root canal wall surfaces.</p>","PeriodicalId":15703,"journal":{"name":"Journal of endodontics","volume":" ","pages":""},"PeriodicalIF":3.5000,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Microtomographic Analysis of the Biomechanical Performance of Thermally Treated Instruments in Flattened and Curved Root Canals.\",\"authors\":\"Julia Godoi Lopes, Jeneffer Vieira Rodrigues, Iago Ramirez, Rafael Verardino de Camargo, Graziela Bianchi Leoni, Manoel Damião Sousa-Neto, Fabiane Carneiro Lopes-Olhê, Jardel Francisco Mazzi-Chaves\",\"doi\":\"10.1016/j.joen.2024.12.012\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Introduction: </strong>This study aimed to evaluate, using microcomputed tomography, the impact of various mechanized systems on the geometry of the root canal system and dentin thickness in mandibular first molars. The hypothesis proposed that different systems would produce significant variations in root canal system preparation.</p><p><strong>Methods: </strong>Mesial and distal canals of mandibular molars were selected and divided into 5 groups (n = 10) based on the system used: 2Shape (25.06), Reciproc Blue (25.08), ProTaper Ultimate (25.08), ProTaper Next (25.06), and Univy New (25.06). Biomechanical preparation was performed following each manufacturer's instructions. Microcomputed tomography scans were conducted before and after preparation to assess 3-dimensional parameters (volume, surface area, Structural Model Index, and prepared root canal walls) and 2-dimensional parameters (area, perimeter, diameters, roundness, and transportation).</p><p><strong>Results: </strong>ProTaper Ultimate exhibited the greatest volume increase in mesial canals (1.73 ± 0.19), while ProTaper Next demonstrated the highest increase in distal canals (1.95 ± 0.25). Furthermore, ProTaper Ultimate resulted in the greatest dentin removal and the largest postpreparation area. Reciproc Blue achieved the best results for roundness and had the lower unprepared walls (15.3 ± 6.97).</p><p><strong>Conclusions: </strong>All systems produced comparable outcomes, with ProTaper Ultimate yielding the greatest volume increase and dentin removal, indicating a less conservative preparation. Reciproc Blue provided optimal roundness and minimized unprepared root canal wall surfaces.</p>\",\"PeriodicalId\":15703,\"journal\":{\"name\":\"Journal of endodontics\",\"volume\":\" \",\"pages\":\"\"},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2024-12-20\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of endodontics\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1016/j.joen.2024.12.012\",\"RegionNum\":2,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"DENTISTRY, ORAL SURGERY & MEDICINE\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of endodontics","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1016/j.joen.2024.12.012","RegionNum":2,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"DENTISTRY, ORAL SURGERY & MEDICINE","Score":null,"Total":0}
Microtomographic Analysis of the Biomechanical Performance of Thermally Treated Instruments in Flattened and Curved Root Canals.
Introduction: This study aimed to evaluate, using microcomputed tomography, the impact of various mechanized systems on the geometry of the root canal system and dentin thickness in mandibular first molars. The hypothesis proposed that different systems would produce significant variations in root canal system preparation.
Methods: Mesial and distal canals of mandibular molars were selected and divided into 5 groups (n = 10) based on the system used: 2Shape (25.06), Reciproc Blue (25.08), ProTaper Ultimate (25.08), ProTaper Next (25.06), and Univy New (25.06). Biomechanical preparation was performed following each manufacturer's instructions. Microcomputed tomography scans were conducted before and after preparation to assess 3-dimensional parameters (volume, surface area, Structural Model Index, and prepared root canal walls) and 2-dimensional parameters (area, perimeter, diameters, roundness, and transportation).
Results: ProTaper Ultimate exhibited the greatest volume increase in mesial canals (1.73 ± 0.19), while ProTaper Next demonstrated the highest increase in distal canals (1.95 ± 0.25). Furthermore, ProTaper Ultimate resulted in the greatest dentin removal and the largest postpreparation area. Reciproc Blue achieved the best results for roundness and had the lower unprepared walls (15.3 ± 6.97).
Conclusions: All systems produced comparable outcomes, with ProTaper Ultimate yielding the greatest volume increase and dentin removal, indicating a less conservative preparation. Reciproc Blue provided optimal roundness and minimized unprepared root canal wall surfaces.
期刊介绍：
The Journal of Endodontics, the official journal of the American Association of Endodontists, publishes scientific articles, case reports and comparison studies evaluating materials and methods of pulp conservation and endodontic treatment. Endodontists and general dentists can learn about new concepts in root canal treatment and the latest advances in techniques and instrumentation in the one journal that helps them keep pace with rapid changes in this field.
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