CAJ | 학술논문

目的：探讨后牙重度磨耗患者咬合抬高后对咀嚼肌表面肌电反应的影响。方法：随机选取2012年1月至2014年1月在我北京航空总医院口腔诊疗中心就诊的，伴有双侧后牙重度磨耗的患者40名为受试对象，其中男性23名，女性17名，年龄40-50岁，治疗前及咬合抬高不同距离后分别进行咬肌及颞肌的肌电检查，并对结果采用多样本均数比较的单因素方差分析进行统计学处理。结果：切牙区颌间距离增加1mm时，双侧咬肌，双侧颞肌肌电值差异无统计学意义。切牙区颌间距离增加2mm时，左侧咬肌，右侧咬肌，左侧颞肌肌电值差异无统计学意义，右侧颞肌肌电值有所增加(17.08±3.27 VS 24.66±3.18， P<0.05)。切牙区颌间距离增加3mm时，除右侧咬肌肌电值差异无统计学意义外(22.35±3.14 VS 27.74±4.26， P>0.05)，左侧咬肌，左侧颞肌，右侧颞肌肌电值差异均有统计学意义。切牙区颌间距离增加4mm时，双侧咬肌，颞肌肌电值差异均有统计学意义。结论：切牙区颌间距离增加2mm时对咬肌和颞肌肌电值影响不大，切牙区颌间距离增加3mm会对咬肌和颞肌肌电值产生较大影响。
목적：탐토후아중도마모환자교합태고후대저작기표면기전반응적영향。방법：수궤선취2012년1월지2014년1월재아북경항공총의원구강진료중심취진적，반유쌍측후아중도마모적환자40명위수시대상，기중남성23명，녀성17명，년령40-50세，치료전급교합태고불동거리후분별진행교기급섭기적기전검사，병대결과채용다양본균수비교적단인소방차분석진행통계학처리。결과：절아구합간거리증가1mm시，쌍측교기，쌍측섭기기전치차이무통계학의의。절아구합간거리증가2mm시，좌측교기，우측교기，좌측섭기기전치차이무통계학의의，우측섭기기전치유소증가(17.08±3.27 VS 24.66±3.18， P<0.05)。절아구합간거리증가3mm시，제우측교기기전치차이무통계학의의외(22.35±3.14 VS 27.74±4.26， P>0.05)，좌측교기，좌측섭기，우측섭기기전치차이균유통계학의의。절아구합간거리증가4mm시，쌍측교기，섭기기전치차이균유통계학의의。결론：절아구합간거리증가2mm시대교기화섭기기전치영향불대，절아구합간거리증가3mm회대교기화섭기기전치산생교대영향。
Objective: To investigate the effects of increase of vertical occlusal dimension (VOD) on the electromyo-graphic activity of masticatory muscle in patients with a serious tooth wear. Methods:Forty 40 to 50-year-old patients (23 male and 17 female) with a serious tooth wear were recruited in our department during the period from January, 2012 to Jan , 2014. Electromyographic examination on bilateral masseter and temporal muscles were performed before and after VOD in-crease. One-way ANOVA was conducted for statistical analysis. Results: No significant changes were found on elec-tromyographic values of masseter and temporal muscles on both sides after 1mm VOD increase on incisors. The elec-tromyographic values of the right temporal muscles significantly increased after 2mm VOD increase (17.08 ±3.27 VS 24.66±3.18, P<0.05), the others remained unchanged. The electromyographic values of masseter on the right side did not significantly change after 3 mm VOD increase (22.35 ±3.14 VS 27.74 ±4.26, P>0.05), the others increased significantly. Electromyographic values of masseter and temporal muscle on both sides increased significantly after 4mm VOD increase. Conclusion:A 2mm increase of vertical occlusal dimension did not show significant effects on electromyographic activities of masticatory muscle, and a 3mm VOD increase enhances the electromyographic activities of masticatory muscle.