单词：laser cavity regeneration process
单词：laser cavity regeneration process 相关文章
I am going to take a chance and say that very few people enjoy going to the dentist, especially for a filling. A dentist usually treat a cavity by removing the damaged part of the tooth. Then they fill the hole with porcelain or a combination of silv
2017年VOA慢速英语(四)月
By Carol Pearson Washington 30 April 2008 Ten years ago, the U.S. Food and Drug Administration approved LASIK, eye surgery with a laser that enables people to see without glasses. But about five percent of LASIK procedures fail, and those patients ca
VOA常速英语2008年（四月）
Days of Painful Tooth Repair May Be Over From VOA Learning English, this is the Health Lifestyle report. Many people fear a visit to the dentist. They are not so much afraid of the doctor, but of the dental equipment and treatments. Well, fear no mor
2015年VOA慢速英语(九)月
Sports stars and politicians are in London to tour the Olympic Park construction site, where in exactly two years athletes from around the world will compete in the 2012 Games. Despite cost concerns, British authorities say they are ahead of schedule
VOA标准英语2010年(七)月
加速钙和矿物质吸收的蛀牙新疗法 For over a hundred years, dentists have been repairing cavities by removing the decayed tooth tissue with a drill and filling the hole with metal or plastic material. Depending on the cavitys depth, this
VOA标准英语2015年(十二月)
Technique May Eliminate Drill-and-Fill Dental Care For over a hundred years, dentists have been repairing cavities by removing the decayed tooth tissue with a drill and filling the hole with metal or plastic material. Depending on the cavitys depth,
VOA标准英语2015年(八月)