Heinrich R, Künzel W, Heinrich J, Holtz H
Zahn Mund Kieferheilkd Zentralbl. 1989;77(8):771-4.
The relationship between coronal and root caries was analyzed in a sample of 963 people aged 25 to 64 years. Subjects with root caries had fewer teeth, more teeth with untreated coronal caries, and more teeth which need conservative treatments and extractions than did people with no root caries. In the age older than 55 years those with root caries had more teeth in the average of 2.5 teeth for both sexes. The other parameters of dental health showed the same differences compared with younger subjects.
对963名年龄在25至64岁之间的人群样本进行了冠龋与根龋关系的分析。患有根龋的受试者牙齿数量较少，未经治疗的冠龋牙齿较多，且与无根龋的人相比，需要保守治疗和拔牙的牙齿更多。在55岁以上的人群中，患有根龋的人平均有2.5颗牙齿，男女皆是如此。与年轻受试者相比，牙齿健康的其他参数也显示出相同的差异。
