不同光固化设备通过人牙本质引起的温度升高。

Temperature rise induced by various light curing units through human dentin.

作者信息

Dogan Arife, Hubbezoglu Ihsan, Dogan Orhan Murat, Bolayir Giray, Demir Hakan

机构信息

Department of Prosthodontics, Faculty of Dentistry, Gazi University, Ankara, Turkey.

出版信息

Dent Mater J. 2009 May;28(3):253-60. doi: 10.4012/dmj.28.253.

DOI:10.4012/dmj.28.253

PMID:19662722

Abstract

This study investigated temperature rises caused by different light curing units (LCUs) in dentin of different thicknesses. The different LCUs tested in this study were namely: quartz-tungsten-halogen (QTH) (Heliolux DLX) LCU, plasma arc (PAC) (Apollo 95E Elite) LCU, and light emitting diode (LED) (Mini LED) in standard curing mode as well as pulse and soft-start modes. One hundred and forty dentin disks of 0.5, 1, 1.5, and 2 mm thickness were prepared from mandibular molars (n=7). Temperatures were recorded using a L-type thermocouple in direct contact with the light guide tip. For all curing units/modes, dentin thickness was inversely proportional to temperature rise and that QTH light gave significantly higher values compared to PAC and LED in all the test conditions. The highest temperature rise was observed under 0.5-mm-thick dentin disk with QTH, whereas the lowest temperature rise was registered with LED light in pulse mode under 2-mm-thick dentin.

摘要

本研究调查了不同厚度牙本质中不同光固化灯（LCU）引起的温度升高情况。本研究中测试的不同光固化灯分别为：石英钨卤素（QTH）（Heliolux DLX）光固化灯、等离子弧（PAC）（Apollo 95E Elite）光固化灯以及处于标准固化模式、脉冲模式和软启动模式下的发光二极管（LED）（Mini LED）光固化灯。从下颌磨牙制备了140个厚度分别为0.5、1、1.5和2毫米的牙本质盘（n = 7）。使用与光导尖端直接接触的L型热电偶记录温度。对于所有固化灯/模式，牙本质厚度与温度升高成反比，并且在所有测试条件下，QTH光产生的值显著高于PAC和LED光。在0.5毫米厚的牙本质盘下使用QTH光时观察到最高温度升高，而在2毫米厚的牙本质下脉冲模式使用LED光时记录到最低温度升高。