Swathika B, Basheer Syed Nahid, Sriram S, Rajmohan Sujith, Murugesan Sabari, Subramani Savadamoorthi Kamatchi
Department of Conservative Dentistry and Endodontics, Mahatma Gandhi Post Graduate Institute of Dental Sciences, Puducherry, India.
Department of Restorative Dental Sciences, College of Dentistry, Jazan University, Jazan, Kingdom of Saudi Arabia.
J Pharm Bioallied Sci. 2024 Jul;16(Suppl 3):S2694-S2696. doi: 10.4103/jpbs.jpbs_404_24. Epub 2024 Jul 12.
Gutta-percha is commonly used in endodontic therapy for obturating root canals after cleaning and shaping procedures. Warm and cold gutta-percha techniques are two common methods employed for obturation, each with its own advantages and limitations.
Twenty extracted human teeth with single-rooted canals were selected and divided into two groups: warm gutta-percha obturation and cold gutta-percha obturation. In the warm gutta-percha group, gutta-percha was heated to a predetermined temperature using a warm gutta-percha heating device and injected into the root canal using a heated carrier. In the cold gutta-percha group, gutta-percha was applied directly to the root canal without prior heating. Root canal obturation quality was assessed using radiographic imaging to evaluate the presence of voids, completeness of obturation, and adaptation to the canal walls. Micro-computed tomography (micro-CT) analysis was also performed to quantify the volume of obturating material and assess the three-dimensional distribution of gutta-percha within the root canal space.
Both warm and cold gutta-percha techniques demonstrated effective obturation of root canals, with comparable outcomes in terms of void formation, completeness of obturation, and adaptation to canal walls. However, micro-CT analysis revealed differences in the volume and distribution of gutta-percha within the root canal space. Warm gutta-percha obturation exhibited more uniform distribution of gutta-percha material and higher volumetric filling compared to cold gutta-percha obturation. Additionally, the warm gutta-percha technique demonstrated superior flowability and adaptation to irregularities within the root canal system.
In this study, warm gutta-percha obturation demonstrated advantages over cold gutta-percha obturation in terms of volumetric filling, distribution within the root canal space, and adaptation to canal irregularities.
牙胶常用于根管治疗，在根管清理和塑形后封闭根管。热牙胶技术和冷牙胶技术是两种常用的根管充填方法，各有优缺点。
选取20颗单根管的离体人牙，分为两组：热牙胶充填组和冷牙胶充填组。在热牙胶组中，使用热牙胶加热装置将牙胶加热至预定温度，并用加热的载体注入根管。在冷牙胶组中，牙胶未经预先加热直接应用于根管。使用影像学检查评估根管充填质量，以评估是否存在空隙、充填的完整性以及与根管壁的贴合情况。还进行了显微计算机断层扫描（micro-CT）分析，以量化充填材料的体积，并评估牙胶在根管空间内的三维分布。
热牙胶技术和冷牙胶技术均显示出对根管的有效充填，在空隙形成、充填完整性和与根管壁贴合方面的结果相当。然而，micro-CT分析显示根管空间内牙胶的体积和分布存在差异。与冷牙胶充填相比，热牙胶充填显示出牙胶材料分布更均匀，体积充填更高。此外，热牙胶技术在流动性和对根管系统不规则处的贴合方面表现更优。
在本研究中，热牙胶充填在体积充填、根管空间内的分布以及对根管不规则处的贴合方面显示出优于冷牙胶充填的优势。
