Table 4 Adhesive failure modes after different surface treatments (unit = numbers).

From: Advantages and feasibility of prefabricated PEEK crowns for aesthetic restoration in primary teeth

Group

Interface failure

Cohesive failure

Mixed failure

PEEK-A

0

0

5

PEEK-B

5

0

0

PEEK-C

3

0

2

PEEK-D

0

0

5