A 5-year clinical study of indirect and direct resin composite and ceramic inlays.
OBJECTIVE
The aim of this investigation was to evaluate the clinical performance of 4 types of tooth-colored inlays.


METHODS
Fifteen direct ceramic inlays (Cerec Cos 2.0), 15 direct resin composite inlays (Brilliant Direct Inlay), 14 indirect ceramic inlays (Vita Dur N), and 14 indirect resin composite inlays (Estilux) were made in 37 patients, according to the manufacturers' instructions. The inlays were evaluated 1 week (baseline) and 6, 12, 36, 48, and 60 months after cementation (modified CDA Quality Evaluation System).


RESULTS
Two Vita Dur N inlays fractured after 1 and 4 years in function, and one Cerec inlay fractured after 4.5 years. Two Brilliant DI inlays needed replacement because of secondary caries (after 1 and 5 years), and one inlay (Estilux) needed replacement due to persisting hypersensitivity. Three inlays (1 Estilux and 2 Brilliant DI) were repaired due to chipping or minor fractures. During the observation period, the surface texture of Brilliant DI and Vita Dur N inlays became significantly rougher. After 5 years, the Estilux inlays had significantly lower ratings for morphology compared to baseline ratings. In general, the occlusal marginal adaptation did not show further disintegration of the luting cement after 1 year.


CONCLUSIONS
Eighty-eight percent of the inlays were in function after 5 years. No significant differences were revealed among the survival rates of the different types of inlays.
Thordrup
M
M
Department of Dental Pathology, Operative Dentistry and Endodontics, Royal Dental College, University of Aarhus, Vennelyst Boulevard DK-8000, Aarhus C, Denmark.
Isidor
F
F
Hörsted-Bindslev
P
P
D000537:Aluminum Oxide / Q000737:chemistry; D002484:Cementation; D002516:Ceramics / Q000737:chemistry; D016009:Chi-Square Distribution; D003188:Composite Resins / Q000737:chemistry; D017076:Computer-Aided Design; D003731:Dental Caries / Q000209:etiology; D003738:Dental Cements / Q000737:chemistry; D018772:Dental Marginal Adaptation; D003764:Dental Materials / Q000737:chemistry; D003776:Dental Porcelain / Q000737:chemistry; D019232:Dental Restoration Failure; D003807:Dentin Sensitivity / Q000209:etiology; D005500:Follow-Up Studies; D006801:Humans; D007284:Inlays / Q000145:classification / Q000379:methods; D015993:Life Tables; D016014:Linear Models; D012008:Recurrence; D019233:Retreatment; D013223:Statistics as Topic; D013499:Surface Properties; D016019:Survival Analysis
C069351:Brilliant Direct-Inlay resin; D003188:Composite Resins; D003738:Dental Cements; D003764:Dental Materials; D003776:Dental Porcelain; C074543:Cerec; C058236:Vitadur N; C029852:Estilux Glaze; D000537:Aluminum Oxide