Buccal

Lingual

Mesial

Distal

Average

PMMA1 N = 33

20.2 ± 13.2

26.8 ± 18.6

41.7 ± 15.6

40.2 ± 18.7

32.3 ± 12.3

Y-ZIR N = 33

2.8 ± 4.6**

5.8 ± 8.9**

10.1 ± 10.0**

10.8 ± 9.6**

7.5 ± 6.4**