Ringkasan :
In 1941, Klein and Palmer published a landmark study that ranked the relative susceptibility to dental caries of various morphological tooth types. Specifically, Klein and Palmer used a four-step approach, which included derivation of: (1) an eruption schedule; (2) posteruptive tooth age; (3) cumulative number of decayed, missing, and filled teeth and cumulative posteruptive tooth age; and (4) relative susceptibility values. Their study was conducted when dental caries prevalence and severity were generally high in the United States, prior to the introduction of preventive measures such as fluoride and dental sealants. This investigation used more recent data to assess whether declines in dental caries prevalence over time have been accompanied by changes in the relative Susceptibility of permanent tooth types

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