Doff R S, Rosen S, App G
J Dent Res. 1977 Aug;56(8):1013-6. doi: 10.1177/00220345770560080301.
A new system was devised for scoring root surface caries. The roots were divided circumferentially and apically into areas. Each exposed area and any carious involvement was given a score of 1. Root surface caries was expressed as total areas affected and as a percentage of the exposed root surface.
设计了一种新的根面龋评分系统。将牙根沿圆周和根尖方向划分为不同区域。每个暴露区域以及任何龋损累及部位均计1分。根面龋以受影响的总面积以及暴露根面的百分比来表示。
