患者张××,女,25岁,大学职员。1986年2月24日来我科就诊。主诉:前牙不齐,要求矫形。检查:(?)反(牙合),深度为2mm,(?)拥挤重叠,拥挤为7mm,(?)均为中性(牙合);牙弓协调,考虑用减数法开辟间隙。(?)拔除。2周后取模。按设计要求,制作矫治器,自凝塑胶充填。患者戴矫治器后,感觉正常。在矫治过程中,因矫治器(牙合)垫经常被咬裂破损。影响咀嚼功能。故改用热凝塑胶矫治器,当时未感觉异 Zhang × × patients, female, 25 years old, college staff. February 24, 1986 came to our department. Chief complaint: missing anterior teeth, requiring orthopedic. Check: (?) Anti (occlusion), the depth of 2mm, (?) Crowded overlap, crowded 7mm, (?) Are neutral (occlusion); dental coordination, consider using the gap method to open the gap. (?)removal. 2 weeks after the mold. According to design requirements, making appliance, self-curing plastic filling. After wearing the appliance, the patient feels normal. During orthodontic treatment, the orthodontic pad is often broken and cracked. Affect chewing function. Therefore, the use of thermosetting plastic appliance, did not feel different