Clinical survival of chair-side generated monolithic lithium disilicate crowns:10-year results

Abstract

The insertion of chair-side fabricated monolithic lithium disilicate crowns can be recommended for long-term use in the posterior region.

Clinical performance of chairside monolithic lithium disilicate glass‐ceramic CAD‐CAM crowns

“…Survival rates between 93.4% and 100.0% have been reported in other investigations, but in these studies the follow‐up period was only 2 years . In one study with a 10 year follow‐up period, the survival rate was estimated to be 83.5% …”

“…The tooth vitality status and cement type did not affect the survival rate of crowns. Although previous studies reported the development of endodontic complications within a period of 2 years following crown placement, we did not observe any loss of vitality for the seven crowns placed on vital teeth over the 4‐year observation period. Neither location of tooth (maxilla or mandible) nor type of tooth (premolar or molar) affected the survival rate.…”

“…This might suggest that although overall experience levels in the student population did not seem to alter success and survival of crowns, there must have been at least some effect which could be related to the presence of a “learning curve” for both students as well as supervising dentists. This observation was not detected in previous research evaluating chairside fabricated crowns because they involved prospective studies and the crowns were made by operators who were already experienced with this type of restorative method . The CEREC Omnicam scanner was used in our investigation, but at this time we do not know how this might have affected the marginal fit as compared to what might be expected with the scanning system (CEREC Bluecam) that was previously used in other studies .…”

“…LDGC blocks have been shown to exhibit excellent performance, not only with good esthetics, but durability and can therefore be used with confidence in the fabrication of monolithic restorations or as a core material with ceramic veneers . When compared to layered restorations, monolithic restorations exhibit less chipping and fracture in addition to good optical properties …”

Fracture analysis of monolithic CAD‐CAM crowns

“…Lithium disilicate crowns showed favorable stability as crown material reported in a study that observed them up to 9 years . Rauch et al investigated the 10‐year performance of chairside monolithic lithium disilicate crowns and recommended these type of crowns be used in the posterior region in the long term . Teichmann et al also investigated lithium disilicate single crowns on teeth and implants and reported that the high potential of lithium disilicate as a reliable material, especially for single‐unit restorations .…”