title: Internal escape channel to improve the seating of full crowns with various marginal configurations: a follow-up study.
abstract: The effectiveness of an internal escape channel in improving the marginal adaptation of full crowns with various marginal configuration was investigated. Full crowns with 90-degree shoulders had a vertical discrepancy comparable to those of crowns with accentuated finish lines. Although an internal escape channel significantly improved the seating of a full crown with a 90-degree shoulder and 45-degree level, its vertical discrepancy was much higher than those of crowns with an accentuated finish line or a 90-degree shoulder.
mesh_terms: D002484:Cementation; D003442:Crowns; D003737:Dental Cavity Preparation; D003779:Denture Design; D003781:Denture Retention; D005500:Follow-Up Studies; D006047:Gold Alloys; D006801:Humans; D008963:Molar; D013499:Surface Properties
chemical_list: D006047:Gold Alloys