Incrustaciones intracoronarias: análisis del comportamiento mecánico según el diseño del bisel proximal y el tipo de agente cementante
ISSN: 0213-4144
Year of publication: 1993
Volume: 9
Issue: 9
Pages: 533-541
Type: Article
More publications in: Archivos de odontoestomatología
Abstract
The performance of two forms of margin preparation (slicing with a disc versus bevellining with a hall diamond) and three cements (temporary cement, zinc oxyphosphate and Panavia EX®) were compared in a study of the retention of 74 intracoronal inlays installed extra orem. There were no significant dijferences in retention between slice and bevel, but the vestibulolingual width of slide preparations (mean 5.98 mm, SD 0.85, SE 0.15) was greater than that of the bevel preparations (mean 5.24 mm, SD 0.52, SE 0.09) (P<0.001). Inlays cemented with zinc oxyphosphate resisted significantly greater loads than when temporary cement was used (p<0.001); all inlays cemented with Panavia EX remained in place under increasing loads until crown fracture occurred at loads 2-3 times those resisted by zinc oxyphosphate cement.