We are using cookies to implement functions like login, shopping cart or language selection for this website. Furthermore we use Google Analytics to create anonymized statistical reports of the usage which creates Cookies too. You will find more information in our privacy policy.
OK, I agree I do not want Google Analytics-Cookies
Quintessence International
Login:
username:

password:

Plattform:

Forgotten password?

Registration

Quintessence Int 30 (1999), No. 12     1. Dec. 1999
Quintessence Int 30 (1999), No. 12  (01.12.1999)

Page 829-836


A 3-year study of inlays milled from machinable ceramic blocks representing 2 different inlay systems
Thordrup, Marianne / Isidor, Flemming / Hörsted-Bindslev, Preben
Objective: The aim of this study was to evaluate the clinical performance of ceramic inlays made from machinable ceramic blocks. Method and materials: The 2 inlay systems involved computer-aided design and computer-aided machining (Cerec Cos 2.1) or copy-milling technique (Celay). The study comprised 15 Celay inlays and 15 Cerec inlays placed in 17 patients. The inlays were evaluated clinically at baseline (1 week) as well as 1 and 3 years later (modified California Dental Association quality evaluation system). Results: One Celay inlay fractured after 1 year of service, and 2 Cerec inlays were replaced, 1 after 6 months and 1 after 1 year, because of pulpal pain and persisting hypersensitivity. One Celay inlay lost retention after 2 years. At the 3-year evaluation, chipping and hairline cracks were seen in 2 Celay inlays. Progressive disintegration of the marginal luting cement was seen for both Celay and Cerec inlays. The remaining 25 inlays performed satisfactorily throughout the 3-year period. Conclusion: Because of their relatively high failure rate, these inlays should be reserved for esthetic indications.