Conversion of dual cure luting cements
作者:
A.H. DARR,
P.H. JACOBSEN,
期刊:
Journal of Oral Rehabilitation
(WILEY Available online 1995)
卷期:
Volume 22,
issue 1
页码: 43-47
ISSN:0305-182X
年代: 1995
DOI:10.1111/j.1365-2842.1995.tb00209.x
出版商: Blackwell Publishing Ltd
数据来源: WILEY
摘要:
summaryThis investigation determined the efficiency and rate of cure of polymeric luting agents when cured under manufacturers' instructions with the appropriate visible light source, and under conditions where light was excluded and curing was reliant on the chemical reaction only. Indentation hardness was used as a reflection of conversion. There was a rapid increase in hardness immediately after light curing followed by a steady increase in hardness over the next 24h. The non‐irradiated chemically cured samples exhibited steadily increasing hardness over 24h, but were too soft to test in the initial 30 min. Hardness values were extrapolated to obtain predicted values of flexural strength. Dual curing was more effective than chemical curing alone. The results suggest that the formulation of dual cure materials is a balance between high levels of conversion in all aspects of the restoration and colour instability due to amine degradation. Clinically there may be poorly cured areas in the deeper aspects of a deep cavit
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