Waldman H B
ASDC J Dent Child. 1985 Sep-Oct;52(5):337-40.
The dental services sector of the economy is a growth industry; however, many changes have occurred since the 1979-1980 recession. The population under the age of eighteen has continued to decrease, and the number of pedodontists has increased. Major changes are occurring in the incidence and prevalence of dental diseases.
经济中的牙科服务部门是一个增长型行业；然而，自1979 - 1980年经济衰退以来发生了许多变化。18岁以下的人口持续减少，而儿童牙医的数量却增加了。牙科疾病的发病率和患病率正在发生重大变化。
