M. M. Aboras, A. Muchtar, C. H. Azhari and N. Yahaya
الملخص العربي
Zirconia (ZrO2) is used to fix restorations as a core material because of its mechanical
properties, aesthetics, and compatibility. This study aims to analyze the failure types in ZrO2-based
restoration fabricated in a dental laboratory in Misurata, Libya. Data were collected from laboratory
records for a 30-day period with follow-up for five months. About 6% of the total restorations had
defects with different percentages, 46% of which were fractures, 29% of which had weak bonding
between ZrO2 frameworks and veneers, 18% of which had cracks, and 7% of which had shade
defects. Although ZrO2 is a suitable material for dental restorations, defects may occur and lead to
the failure of dental restorations. A thorough study is necessary to analyze the cause of failurein
zirconia-based restorationsand to improve the properties to produce a versatile dental restorative
material.
محمد ميلاد ابوراس | Mohamed M. M. Aboras | 1236