PMMA1

Y-ZIR

Lingual

Mesial

Distal

Lingual

Mesial

Distal

Buccal

0.673

<0.01**

<0.01**

0.406

<0.01**

<0.01**

Lingual

-

<0.01**

<0.01**

-

0.149

0.028*

Mesial

-

-

0.994

-

-

0.920