单侧完全性唇腭裂患者上颌后牙力的测定与分析

Biting force of upper premolar and molar in the patients with unilateral cleft lip and palate

〕目的 :了解单侧完全性唇腭裂 (UCL P)患者的牙合力水平 ,借以掌握其口腔功能状况。方法 :以 MBF- 1型牙合力计测试 2 2名 UCL P患者上颌后牙牙合力和 2 5名正常牙合者的相应牙合力 ,同时测定其咀嚼效能和检查其上颌后牙的咬合接触状况。结果 :1UCL P患者上颌后牙牙合力明显低于正常牙合者 (P<0 .0 5 ) ;2 UCL P患者上颌后牙牙合力无性别差异。结论 :牙合力水平低下和咬合接触不良是 UCL

Objective:To study the biting force of upper premolar and molar in the patients with unilateral cleft lip and palate(UCLP).Method:25 health people and 22 cases (13 male and 9 female with pemanent teeth) of UCLP without tempromandibular joint dysfuction were selected in the subject.Their biting force of upper premolar and molar in intercaspid position was tested by MBF 1 device,meanwhile,their mastictory perfomance and contact area of upper premolar and molar were checked.All of the results were managed by computer with SPSS 7.5 statistics software.Results:①Biting force of upper premolar and molar of male was higher than that of female in health people,but there was no sexual difference in UCLP.② Biting force in the group of UCLP was lower than that in the control (P<0.05).③The mastifactory perfomance in the control was heigher than that in UCLP (P<0.0001),and the contact area of up molar in the former was larger than in the latter.Conclusion:The decrease of biting force and occlusal contact are the most important factors for the low masticatory performance in the patients with UCLP.