Longevity of ceramic onlays: A systematic review

Abstract

Ceramic onlay appears to be a reliable option to restore posterior teeth. The most common pattern of failure is fracture of the ceramic material. The risk of ceramic onlay failure seems to increase if the restored tooth is nonvital and the patient demonstrates parafunctional habits.

Clinical evaluation of chairside‐fabricated partial crowns composed of zirconia‐reinforced lithium silicate ceramics: 3‐year results of a prospective practice‐based study

“…Based on the findings of a systematic review on the longevity of ceramic onlays that included a total of 21 studies, marginal discolorations represent a frequent form of deterioration that affect 5.0% to 88.2% of restorations . In the present study, for both luting agents, a significant increase in “bravo” ratings could be observed from baseline to the 3‐year examination.…”

“…In the present study, for both luting agents, a significant increase in “bravo” ratings could be observed from baseline to the 3‐year examination. However, “bravo” ratings only reached a moderate level (13.3‐14.3%) compared with the values reported in the previously described systematic review …”

“…Regarding the marginal integrity, a nonsignificant increase in bravo ratings of 7.1% to 11.1% could be detected after 3 years. This finding is in the range reported in other studies that used dual‐curing luting agents . For both parameters, no significant influence of the two luting agents could be detected.…”

“…With the development of new scanning devices, improvement in the design software and the milling technology, the field of indication, has been enlarged to partial and full crowns, as well as fixed dental prosthesis. In particular, in terms of preserving sound tooth structure, the fabrication of partial crowns is a viable option for restoring large defects and an alternative to full coverage crowns . Chairside fabrication of this type of restoration provides a considerable reduction in the treatment time as the restoration can be fabricated during one appointment in a reasonable amount of time.…”

“…In addition to the type of material and the cementation technique, other patient‐ and restoration‐specific risk factors (eg, position of the restoration, tooth vitality, and parafunctional habits) are discussed as potential risks for the longevity of CCPCs. However, these potential risk factors have not previously been investigated for CCPCs in clinical trials …”