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首页> 外文期刊>Journal of prosthodontics: official journal of the American College of Prosthodontists >Infrared Thermographic Comparison of Temperature Increases on the Root Surface during Dowel Space Preparations Using Circular versus Oval Fiber Dowel Systems
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Infrared Thermographic Comparison of Temperature Increases on the Root Surface during Dowel Space Preparations Using Circular versus Oval Fiber Dowel Systems

机译：使用圆形和椭圆形光纤定位销系统进行定位销空间准备过程中根表面温度升高的红外热成像比较

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Purpose: The purpose was to evaluate temperature increases during dowel space preparations with oval and circular fiber dowel systems. Materials and Methods: This study included 42 single-rooted human mandibular premolars. Roots were scanned with cone-beam computerized tomography (CBCT) to determine the ovoid root canal morphology. Root canals were treated with Ni-Ti rotary instruments and obturated. A second CBCT was taken to determine the thinnest dentin thickness of each root. Roots were randomly divided into two groups (n = 21) according to the fiber dowel system used: group 1, circular fiber dowel system (D.T. Light-Post); group 2, oval fiber dowel system (Ellipson Post). Dowel spaces were prepared using a circular fiber dowel drill and a diamond-coated ultrasonic tip with an oval section under water cooling until 9 mm dowel spaces were obtained. Temperature changes were recorded from the thinnest root surfaces using a FLIR E60 thermal imaging camera. Results: Temperature increases were significantly greater with the circular fiber dowel system than with the oval fiber dowel system (p < 0.05). Conclusions: Although both dowel systems generated high temperature increases on root surfaces, the relatively lower temperature increase associated with the use of oval fiber dowels in ovoid canals makes it preferable to the use of circular fiber dowels.
机译：目的：目的是评估使用椭圆形和圆形纤维销钉系统准备销钉空间时的温度升高。材料和方法：本研究包括42个单根人类下颌前磨牙。用锥形束计算机断层扫描（CBCT）扫描牙根，以确定卵形的根管形态。根管用Ni-Ti旋转器械处理并封闭。进行第二次CBCT，以确定每个牙根的最薄牙本质厚度。根据使用的纤维销钉系统，将根随机分为两组（n = 21）：第1组，圆形纤维销钉系统（D.T. Light-Post）;第2组，椭圆纤维销钉系统（Ellipson Post）。在水冷条件下，使用圆形纤维销钉钻和带椭圆形截面的金刚石涂层超声头制备销钉空间，直到获得9 mm销钉空间。使用FLIR E60热像仪从最薄的根部表面记录温度变化。结果：圆形纤维销钉系统的温度升高明显大于椭圆形纤维销钉系统的温度升高（p <0.05）。结论：尽管这两种销钉系统都会在根部表面产生较高的温度升高，但卵形管中使用椭圆形纤维销钉所引起的相对较低的温度升高，使其优于圆形纤维销钉。

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