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Long-term clinical results of chairside Cerec CAD/CAM inlays and onlays: a case series


Otto, T; Schneider, D (2008). Long-term clinical results of chairside Cerec CAD/CAM inlays and onlays: a case series. The International Journal of Prosthodontics, 21(1):53-59.

Abstract

PURPOSE: The objective of this follow-up study was to examine the performance of Cerec inlays and onlays, all of which were placed by the same clinician, in terms of clinical quality over a functional period of 15 years. MATERIALS AND METHODS: Of 200 Cerec inlays and onlays placed consecutively in a private practice by one of the authors (TO) between 1989 and early 1991, 187 were closely monitored over a period of 15 years. All ceramic inlays and onlays had been placed chairside using the Cerec 1 method and had been luted with a bonding composite. Up to 17 years after their placement, a follow-up assessment was conducted, and the restorations were classified using modified United States Public Health Service criteria. RESULTS: According to Kaplan-Meier analysis, the success rate of Cerec inlays and onlays was 88.7% after 17 years. A total of 21 failures (11%) were found in 17 patients. Of these failures, 76% were attributed to ceramic fractures (62%) or tooth fractures (14%). The reasons for the remaining failures were caries (19%) and endodontic problems (5%). Restorations of premolars presented a lower failure risk than those of molars. CONCLUSION: The survival rate probability of 88.7% after up to 17 years of clinical service for Cerec computer-aided design/computer-assisted machining restorations made of Vita Mk I feldspathic ceramic is regarded as a very respectable clinical outcome.

Abstract

PURPOSE: The objective of this follow-up study was to examine the performance of Cerec inlays and onlays, all of which were placed by the same clinician, in terms of clinical quality over a functional period of 15 years. MATERIALS AND METHODS: Of 200 Cerec inlays and onlays placed consecutively in a private practice by one of the authors (TO) between 1989 and early 1991, 187 were closely monitored over a period of 15 years. All ceramic inlays and onlays had been placed chairside using the Cerec 1 method and had been luted with a bonding composite. Up to 17 years after their placement, a follow-up assessment was conducted, and the restorations were classified using modified United States Public Health Service criteria. RESULTS: According to Kaplan-Meier analysis, the success rate of Cerec inlays and onlays was 88.7% after 17 years. A total of 21 failures (11%) were found in 17 patients. Of these failures, 76% were attributed to ceramic fractures (62%) or tooth fractures (14%). The reasons for the remaining failures were caries (19%) and endodontic problems (5%). Restorations of premolars presented a lower failure risk than those of molars. CONCLUSION: The survival rate probability of 88.7% after up to 17 years of clinical service for Cerec computer-aided design/computer-assisted machining restorations made of Vita Mk I feldspathic ceramic is regarded as a very respectable clinical outcome.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Center for Dental Medicine > Clinic for Fixed and Removable Prosthodontics
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:2008
Deposited On:07 Feb 2009 12:10
Last Modified:05 Apr 2016 12:58
Publisher:Quintessence Publishing
ISSN:0893-2174
Official URL:http://www.quintpub.com/journals/ijp/abstract.php?iss2_id=257&article_id=3143&article=10&title=Long-Term%20Clinical%20Results%20of%20Chairside%20Cerec%20CAD/CAM%20Inlays%20and%20Onlays:%20A%20Case%20Series
Related URLs:http://www.quintpub.com/journals/ijp/abstract.php?iss2_id=257&article_id=3143&article=10&title=Long-Term%20Clinical%20Results%20of%20Chairside%20Cerec%20CAD/CAM%20Inlays%20and%20Onlays:%20A%20Case%20Series (Publisher)
PubMed ID:18350948

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