有蛀牙,如何买保险?

最后一颗大牙估计蛀虫了,吃东西酸酸的。是学生呢,正准备买保险,学校的指定的保险计划,里面应该不包牙齿的,所以打算另外加牙齿的,好像有一下的内容,大家帮我看看,要加啥好呢?谢谢了啊!
































































Adult Cleaning$80$25$55
4 Bitewing X-rays$50$17$33
Panoramic Film$65$35$25
Oral Evaluation$40$12$28
Silver Fillings$88-$170$30-$63$58-$107
Resin Fillings$99-$170$44-$103$55-67
Crowns$840-$1000$361-$409*$479-$591
Partials/Dentures$1400-$2000$515-$584*$885-$1416
Root Canals$496-$758$236-$351$260-$407
Deep Scaling$212/Quad$82/Quad$130
Extractions$165-$500$44-$170$121-$330
Orthodontia$500020% Discount$1000