患者，女，39岁，
因龋损、松动拔除半年，要求义齿修复而就诊，口腔检查：右上 缺失，缺隙大小正常约10mm，牙槽窝愈合良好，余留牙不松，咬合关系正常
若为该患者进行固定义齿修复，最佳的固定桥形式是（）
A．单端固定桥
B．双端固定桥
C．复合固定桥
D．半固定桥
E．以上均可
参考答案：B
解析：
双端固定桥所承受的
力，通过两端基牙传递至基牙牙周组织。桥基牙能承受较大力，且两端基牙所分担的力也比较均匀。双端固定桥将基牙连接为一个整体，由单个基牙的生理性运动转变成固定桥基牙的整体性生理运动。此运动方式同样符合牙周组织健康要求。单个牙缺失，若余留牙不松，首选双端固定桥。
| 完形填空。 | ||||
| I was shopping in the supermarket when I heard a young voice. "Mom, come here! There's a lady here my size!" The mother rushed to her son, then she turned to me to 1 . I smiled and told her, "It's okay." Then I 2 the boy, "Hi, I'm Darryl Kramer. How are you?" He studied me 3 , and asked, "Are you a little mommy?" "Yes, I have a son," I answered. " 4 are you so little?" he asked in curiosity. "It's 5 I was born," I said. "Some people are little. Some are tall. I'm just not going to grow any 6 ." After I answered his other questions, I shook the boy's hand and left. My life as a little person is 7 with stories like that. I enjoy talking to children and explaining why I look 8 from their parents. It takes only one glance to see my 9 . I stand three feet nine inches tall. I was a born dwarf (侏儒). 10 this, I did all the things other kids did when I was growing up. I didn't realize how short I was 11 I started school. 12 kids picked on me, calling me names (嘲笑我). Then I knew, I began to 13 the first day of school each year. New students would always stare at me as I struggled to 14 the school bus stairs. But I learned to smile and accept the 15 that I was going to be noticed my whole life. I decided to make my uniqueness and advantage rather than a disadvantage. What I lacked in height, I make up for in 16 . It's the children's questions that make my life 17 . I enjoy answering their questions. My hope is that I will 18 them to accept their peers (同龄人) whatever 19 and shape they come in, and treat them 20 . | ||||
|