Table 2.

Postradiation dental index surface score and restorative score

Score	Description
SS
0	No change in tooth surface. appearance is smooth, shiny, and intact
1	White line or brown stain. intact enamel, surface is smooth and shiny
2	Single focal area of enamel/tooth structure loss (≤2 mm); surface may have white line or brown stain
3	Single focal area of enamel/tooth structure loss (>2 mm); or>1 focal area of enamel/tooth. Total tooth structure lost <1/3 of surface area
4	Enamel/tooth structure lost >1/3 but<2/3 of surface area
5	Enamel/tooth structure lost >2/3 of surface area
RS
0	No restoration
1	≤2 mm×≤2 mm restoration
2	>2 mm×>2 mm restoration but restored surface<1/3 surface area
3	Restored surface≥1/3 but <2/3 surface area
4	Restored surface≥2/3 but <100% surface area
5	Restored surface=100% surface area

SS: Surface score, RS: Restorative score