重度磨耗伴牙列缺损的一次性咬合重建修复

目的探讨一次性咬合重建修复重度磨耗伴牙列缺损的可行性。方法对1例重度磨耗伴牙列缺损的低位咬合患者采用垫式可摘局部义齿行一次性咬合重建,治疗后1个月和3个月复诊,询问患者主观感受。治疗前、治疗后1个月和3个月时,用肌电图仪测咀嚼肌肌电活动,用花生米悬浊液比色法测咀嚼效率。结果患者咬合升高3.5mm。随访3个月,患者无不适,对义齿的美观和功能都满意。静息状态下咀嚼肌肌电活动较治疗前明显减弱,最大紧咬状态下变化不明显。治疗前花生米悬浊液比色法光密度值为0.436,治疗后1个月和3个月的光密度值为0.745和0.875,患者治疗后咀嚼效率较治疗前明显提高。结论一次性咬合重建可以尝试性修复重度磨耗伴牙列缺损。

Occlusal Reconstruction of Serious Attrition with Dentition Defect

Objective To investigate the feasibility to restore the vertical dimension and missing teeth simultaneously for the patients suffer from serious attrition with dentition defect.Methods One patient of serious attrition with dentition defect was treated with occlusal pad-over denture in a complete oral reconstruction.After one-months’ and three-months’follow up,the feelings of the patient were reviewed.The electromyography of masseter and measure chewing efficiency by peanut suspension colorimetry were applied before the treatment,and one month or three months after the restoration respectively.Results Vertical dimension was increased by 3.5 mm.The patient was satisfied with both esthetics and function of the prosthetics in the three months of follow-up.Electromyography of stationary phase diminished obviously,while at the intercuspal position its change was unconspicuous.The optical density value was 0.436 before the restoration,while 0.745 and 0.875 one and three months after restoration,indicating that chewing efficiency was greatly increased.Conclusion Occlusal pad-over denture has a good effect in a short time for the treatment of serious attrition with dentition defect.