Table 5 Reasons of Failures.

From: Fifteen-year recall period on zirconia-based single crowns and fixed dental prostheses. A prospective observational study

Type failure

Freq.

Percent

No failure

438

77.99

Loss of retention or recementation

86

15.31

Veener fractured

28

4.98

Loss of crown due to extraction

10

1.72

Total

562

100

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