Paven Mihai, Marinescu Adrian-George, Abuabboud Osama, Cirligeriu Laura-Elena, Nica Luminita Maria, Alexa Vlad Tiberiu, Rosianu Ruxandra Sava, Galuscan Atena, Oancea Roxana
Department of Restorative Dentistry and Endodontics, Research Center TADERP, Faculty of Dentistry, "Victor Babeș" University of Medicine and Pharmacy Timișoara, 300041 Timișoara, Romania.
Translational and Experimental Clinical Research Centre in Oral Health, Department of Preventive, Community Dentistry and Oral Health, Faculty of Dentistry "Victor Babeș" University of Medicine and Pharmacy Timișoara, 300041 Timișoara, Romania.
J Clin Med. 2024 Dec 9;13(23):7484. doi: 10.3390/jcm13237484.
This study investigates the temperature changes on the external root surface during root canal preparation using different rotary systems and assesses the impact of irrigation temperatures. Sixty extracted human maxillary incisors were divided into four groups based on the rotary system used: ProTaper Next (Dentsply Sirona, Ballaigues, Switzerland), Reciproc Blue (VDW GmbH, Munich, Germany), WaveOne Gold (Dentsply Sirona, Ballaigues, Switzerland), and TruNatomy (Dentsply Sirona, Ballaigues, Switzerland). These systems differ in cutting efficiency and design. Temperature measurements during instrumentation and irrigation were recorded using a FLIR E60bx thermal camera (Teledyne FLIR LLC, Hudson, NH, USA). Irrigations were conducted with sodium hypochlorite at room temperature and heated to 60 °C. The ProTaper Next group exhibited the highest average temperature increase during instrumentation (5.2 °C), followed by WaveOne Gold (4.3 °C), Reciproc Blue (3.7 °C), and TruNatomy (2.8 °C). During irrigation with heated sodium hypochlorite, temperature rises recorded were 6.8 °C for ProTaper Next, 5.9 °C for WaveOne Gold, 5.2 °C for Reciproc Blue, and 4.1 °C for TruNatomy. Statistical analysis revealed a significant negative correlation between dentin thickness and temperature rise, with r-values ranging from -0.62 to -0.87 across the groups. No significant correlation was found between canal diameter and temperature change, indicating that the canal's size does not influence the thermal impact as much as the properties of the rotary system and irrigation temperature. Different rotary systems produce varying levels of temperature increases on the external root surface, influenced significantly by the thickness of the dentin and the temperature of the irrigation solution. These variations necessitate careful selection of instrumentation and irrigation protocols to minimize potential thermal damage to surrounding periodontal tissues.
本研究调查了使用不同旋转系统进行根管预备时牙根外表面的温度变化，并评估冲洗温度的影响。60颗拔除的人上颌中切牙根据所使用的旋转系统分为四组：ProTaper Next（登士柏西诺德公司，瑞士巴莱格）、Reciproc Blue（德国VDW公司，慕尼黑）、WaveOne Gold（登士柏西诺德公司，瑞士巴莱格）和TruNatomy（登士柏西诺德公司，瑞士巴莱格）。这些系统在切割效率和设计上有所不同。使用FLIR E60bx热成像仪（Teledyne FLIR有限责任公司，美国新罕布什尔州哈德逊）记录预备和冲洗过程中的温度测量值。使用室温下的次氯酸钠进行冲洗，并将其加热至60°C。ProTaper Next组在预备过程中平均温度升高最高（5.2°C），其次是WaveOne Gold（4.3°C）、Reciproc Blue（3.7°C）和TruNatomy（2.8°C）。在用加热的次氯酸钠冲洗期间，ProTaper Next记录的温度升高为6.8°C，WaveOne Gold为5.9°C，Reciproc Blue为5.2°C，TruNatomy为4.1°C。统计分析显示牙本质厚度与温度升高之间存在显著负相关，各组的r值范围为-0.62至-0.87。未发现根管直径与温度变化之间存在显著相关性，这表明根管大小对热影响的影响不如旋转系统的特性和冲洗温度大。不同的旋转系统在牙根外表面产生不同程度的温度升高，这受到牙本质厚度和冲洗液温度的显著影响。这些差异需要仔细选择预备和冲洗方案，以尽量减少对周围牙周组织的潜在热损伤。
