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首页> 外文期刊>Ecological restoration >Histomorphometric Evaluation of the Effects of Mandibular Advancement Appliance and Low Level Laser Therapy (LLLT) with Different Doses on Condylar Cartilage and Subchondral Bone in Rats
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Histomorphometric Evaluation of the Effects of Mandibular Advancement Appliance and Low Level Laser Therapy (LLLT) with Different Doses on Condylar Cartilage and Subchondral Bone in Rats

机译：不同剂量对大鼠髁突骨软骨和子骨髓内骨质术后颌骨推进器和低水平激光治疗（LLLT）效果的组织形态性评价

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摘要

The aim of this study was to evaluate the effects of mandibular advancement appliance and low level laser therapy (LLLT) with different doses on cellular hypertrophic changes in the mandibular condyle of rats. Forty-eight 8-week-old male Wistar albino rats weighing between 260 and 280 g were randomly divided into four experimental and control groups. Group I was the control group; group II was the mandibular advancement appliance group; group III was the 8 J/cm(2) (0.25 W, 20 s) laser irradiation with mandibular advancement appliance group; and group IV was the 10 J/cm(2) (0.25 W, 25 s) laser irradiation with mandibular advancement appliance group. Mandibular condyle cartilage and subchondral bone changes with different LLLT dose and mandibular advancement appliance were evaluated by histomorphometrical analysis. Subchondral bone fraction results showed that there were no significant differences between groups (p<0.05). The statistically significant differences found between control group and experimental groups in anterior and posterior cartilage layers thickness (p<0.05) and (p<0.01). Posterior and anterior condylar cartilage layers of rats react differentially to LLLT and mandibular advancement application. Maximum changes in condylar cartilage layers were found in 8 J/cm(2) laser irradiation with mandibular appliance group.
机译：本研究的目的是评估下颌推进器和低水平激光治疗（LLLT）对不同剂量对大鼠颌骨髁上的细胞肥大变化的影响。在260和280g之间的四十八个8周龄雄性Wistar白化大鼠随机分为四个实验和对照组。小组我是对照组;第二组是下颌推进家电组; III组是8 J / cm（2）（0.25 W，20 S）激光照射，具有下颌推进器组;第四组是10J / cm（2）（0.25W，25秒）激光照射，具有下颌前进器组。通过组织综合分析评估具有不同LLLT剂量和下颌推进器具的下颌髁软骨和子骨髓性骨骼变化。 Subchindrallal骨分数结果表明，组之间没有显着差异（P <0.05）。对照组和前后软骨层厚度和后部软骨层的实验组之间发现的统计学显着差异（P <0.05）和（P <0.01）。大鼠后侧和前髁骨库包层差异为LLLT和下颌前进施用。在8J / cm（2）激光照射中，髁突软骨层的最大变化是用下颌电器组的8J / cm（2）激光照射。

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