Table 4 The adapted FDI criteria with their categories and grading

A. Aesthetic properties

1. Surface lustre

2. Staining

a. surface b. margin

3. Color match and translucency

4. Esthetic anatomical form

1. Clinically excellent/very good

2. Clinically good

3. Clinically sufficient/satisfactory (minor shortcomings, no unacceptable effects but not adjustable without damage to the tooth)

4. Clinically unsatisfactory/(but reparable)

5. Clinically poor (replacement necessary)

1. Acceptable (1, 2, 3)

2. Not acceptable (4, 5)

B. Functional properties

5. Fracture of material and retention

6. Marginal adaptation

7. Occlusal contour and wear

a) qualitatively b) quantitatively

8. Approximal anatomical form

a. contact point b. contour

9. Radiographic examination (when applicable)

10. Patient’s view

C. Biological properties

11. Postoperative (hyper-)sensitivity and tooth vitality

12. Recurrence of caries (CAR), erosion, abfraction

13. Tooth integrity (enamel cracks, tooth fractures)

14. Periodontal response (always compared to a reference tooth)

15. Adjacent mucosa

16 Oral and general health