Marco A Carvalho, Priscilla C Lazari-Carvalho, Paulo E T Maffra, Thábata F Izelli, Marco Gresnigt, Carlos Estrela, Pascal Magne
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The aim of this study was to evaluate a novel clinical sequence to improve the resin-dentin microtensile bond strength (μTBS) to endodontically treated teeth.</p><p><strong>Materials and methods: </strong>Twenty human molars were distributed in four experimental groups (n = 5, N = 20): C-control group without exposure to any endodontic chemical substances (2.5% sodium hypochlorite, 17% EDTA and endodontic cement); LDh-late dentin hybridization (Dh) with Dh at the time of final restoration, after exposure to chemical substances; IPDS-immediate pre-endodontic dentin sealing, with Dh before exposure to chemical substances; and PLDh-late Dh after exposure to chemical substances and after dentin repreparation with ultrasonic diamond tip. Teeth were restored with resin composite and the microtensile test was performed after 24 h.</p><p><strong>Results: </strong>The highest bond strength values were found in the PLDh, IPDS, and C groups, without statistically significant differences among them. The lowest value was found in the LDh group. The LDh group presented a decrease of 70% when compared with the control group.</p><p><strong>Conclusion: </strong>The resin-dentin microtensile bond strength was significantly improved by dentin hybridization before exposure to chemicals used during endodontics. Otherwise, substantial dentin repreparation is necessary to restore the bond strength after this exposure.</p><p><strong>Clinical significance: </strong>Early dentin hybridization (IPDS) before endodontic treatment not only improves the microtensile bond strength to dentin but also omitting this procedure would require significant repreparation of the exposed dentin after endodontic treatment to restore the bond strength. Hence, it allows the preservation of healthy tooth structure (no need for repreparation), as well as the reinforcement of weakened cusps and improvement of isolation (if combined with deep margin elevation, when necessary).</p>","PeriodicalId":15988,"journal":{"name":"Journal of Esthetic and Restorative Dentistry","volume":" ","pages":""},"PeriodicalIF":3.2000,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Immediate Pre-Endodontic Dentin Sealing (IPDS) Improves Resin-Dentin Bond Strength.\",\"authors\":\"Marco A Carvalho, Priscilla C Lazari-Carvalho, Paulo E T Maffra, Thábata F Izelli, Marco Gresnigt, Carlos Estrela, Pascal Magne\",\"doi\":\"10.1111/jerd.13395\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Objective: </strong>Chemicals used during canal disinfection and endodontic sealers have a deleterious effect on dentin bond strength. The aim of this study was to evaluate a novel clinical sequence to improve the resin-dentin microtensile bond strength (μTBS) to endodontically treated teeth.</p><p><strong>Materials and methods: </strong>Twenty human molars were distributed in four experimental groups (n = 5, N = 20): C-control group without exposure to any endodontic chemical substances (2.5% sodium hypochlorite, 17% EDTA and endodontic cement); LDh-late dentin hybridization (Dh) with Dh at the time of final restoration, after exposure to chemical substances; IPDS-immediate pre-endodontic dentin sealing, with Dh before exposure to chemical substances; and PLDh-late Dh after exposure to chemical substances and after dentin repreparation with ultrasonic diamond tip. 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引用次数: 0
摘要
目的:根管消毒和根管封闭时使用的化学药品对牙本质结合强度有不良影响。本研究的目的是评估一种新的临床序列,以提高树脂-牙本质与根管治疗后牙齿的微拉伸结合强度(μTBS)。材料与方法:20颗人磨牙分为4个实验组(n = 5, n = 20): c -对照组不接触任何根管化学物质(2.5%次氯酸钠、17% EDTA和根管水泥);暴露于化学物质后,ldh -晚期牙本质杂交(Dh)与最终修复时的Dh;ipds -即刻牙髓前牙本质密封,在接触化学物质前使用Dh;化学物质暴露后和超声金刚石尖牙本质再制备后的pldh -后期Dh。采用树脂复合材料修复牙体,24h后进行微拉伸试验。结果:PLDh组、IPDS组、C组粘结强度值最高,差异无统计学意义。LDh组最低。LDh组与对照组相比下降了70%。结论:牙本质杂交可显著提高牙本质与树脂的微拉伸结合强度。否则,大量的牙本质重新准备是必要的,以恢复这种暴露后的结合强度。临床意义:根管治疗前早期牙本质杂交(IPDS)不仅可以提高与牙本质的微拉伸结合强度,但如果不进行这一步骤,则需要在根管治疗后对暴露的牙本质进行大量的重新制备以恢复结合强度。因此,它可以保存健康的牙齿结构(无需重新准备),以及加强减弱的尖牙和改善隔离(如果必要时与深缘抬高相结合)。
Immediate Pre-Endodontic Dentin Sealing (IPDS) Improves Resin-Dentin Bond Strength.
Objective: Chemicals used during canal disinfection and endodontic sealers have a deleterious effect on dentin bond strength. The aim of this study was to evaluate a novel clinical sequence to improve the resin-dentin microtensile bond strength (μTBS) to endodontically treated teeth.
Materials and methods: Twenty human molars were distributed in four experimental groups (n = 5, N = 20): C-control group without exposure to any endodontic chemical substances (2.5% sodium hypochlorite, 17% EDTA and endodontic cement); LDh-late dentin hybridization (Dh) with Dh at the time of final restoration, after exposure to chemical substances; IPDS-immediate pre-endodontic dentin sealing, with Dh before exposure to chemical substances; and PLDh-late Dh after exposure to chemical substances and after dentin repreparation with ultrasonic diamond tip. Teeth were restored with resin composite and the microtensile test was performed after 24 h.
Results: The highest bond strength values were found in the PLDh, IPDS, and C groups, without statistically significant differences among them. The lowest value was found in the LDh group. The LDh group presented a decrease of 70% when compared with the control group.
Conclusion: The resin-dentin microtensile bond strength was significantly improved by dentin hybridization before exposure to chemicals used during endodontics. Otherwise, substantial dentin repreparation is necessary to restore the bond strength after this exposure.
Clinical significance: Early dentin hybridization (IPDS) before endodontic treatment not only improves the microtensile bond strength to dentin but also omitting this procedure would require significant repreparation of the exposed dentin after endodontic treatment to restore the bond strength. Hence, it allows the preservation of healthy tooth structure (no need for repreparation), as well as the reinforcement of weakened cusps and improvement of isolation (if combined with deep margin elevation, when necessary).
期刊介绍:
The Journal of Esthetic and Restorative Dentistry (JERD) is the longest standing peer-reviewed journal devoted solely to advancing the knowledge and practice of esthetic dentistry. Its goal is to provide the very latest evidence-based information in the realm of contemporary interdisciplinary esthetic dentistry through high quality clinical papers, sound research reports and educational features.
The range of topics covered in the journal includes:
- Interdisciplinary esthetic concepts
- Implants
- Conservative adhesive restorations
- Tooth Whitening
- Prosthodontic materials and techniques
- Dental materials
- Orthodontic, periodontal and endodontic esthetics
- Esthetics related research
- Innovations in esthetics