Table 5.

The hierarchical order of CAST codes before and after use of conventional treatments

Code		Status	Treatment	Status after Tx	Code at end of Tx
0		Healthy	Maintenance care	Healthy	0
1	S	Healthy	Maintenance care	Healthy	1
2	R	Healthy	Maintenance care	Healthy	2
3	E	Premorbidity	Maintenance/Preventive care	Premorbidity/Healthy	3 or 1
4	D	Morbidity	Sealant/Restorative care	Healthy	1 or 2
5	D	Morbidity	Restorative care	Healthy	2
6	P	Morbidity	Pulp treatment or extraction	Healthy	2 or 8
7	P	Morbidity	Pulp treatment or extraction	Healthy	2 or 8
8	L	Mortality	Nothing? Rehabilitative care?	Not diseased	8

Tx = treatment.