The shared vision for ICDAS is:

 ¤ ICDAS is a clinical scoring system for use in dental education,
 clinical practice, research, and epidemiology
.

 ¤ ICDAS is designed to: lead to better quality information to inform
 decisions about appropriate diagnosis, prognosis, and clinical
 management at both the indivdual and public health levels
.

 and
 ¤ ICDAS provides a framework to support and enable personalised
  total caries management for improved long term health outcomes
.
 
 

In order to use the ICDAS criteria in clinical practice the following conditions are essential to enable examiners to assess each of the caries codes accurately: overhead operating light; cleaned teeth and compressed air.  Since caries forms in areas of plaque stagnation it is essential that the teeth are cleaned with at least a toothbrush and floss before conducting an examination using the ICDAS criteria.

Explanation to the table
 
Column 1: Terms of increasing severity stages of caries for lay persons
Column 2: Terms for the visual apperance for increasing severity stages of caries for professionals
Column 3 Related scores to coulmn 2
Column 4: Activity assessment posibilities for the scores in column 3 and thus also columns 2 and 1
Column 5: Scores for radiographical classification of lesion severity:
   
  0=no radiolucency
  1= radiolucency in outer ½ of the enamel
  2= radiolucency in inner ½ of the enamel± EDJ
  3= radiolucency limited to the outer 1/3 of dentine
  4= radiolucency reaching the middle 1/3 of dentine
  5= radiolucency reaching the inner 1/3 of dentine, clinically cavitated
  6= radiolucency into the pulp, clinically cavitated
   
Column 6:

Scores for Fibre-optic translumination (FOTI); classification of lesion severity: Proximal and occlusal

  0= no shadow or stained area
  1= Lesion stays the same width when transilluminated/Thin grey shadow into enamel when transilluminated
  2= Wide grey shadow into enamel when transilluminated
  3= Wide grey shadow into enamel with no evidence of dentine shadow
  4= Orange/brown or bluish/black shadow < 2mm in width
  5= Shadow as described above and/or transillumination light is blocked > 2mm in width
  6= Large area of frank cavitation with likely pulpal involvement
   
Column 7: Risk assessment:h=high, m=medium, l=low
Column 8: PTO = Preventive treatment option; OTO = Operative treatment option
Column 9: p = progressing; a = arrested; r = regressing