JOURNAL OF DHAKA DENTAL COLLEGE

Clinical Evaluation of Gingival Retraction Systems in Gingival Tissue Displacement Procedure for Fixed Prosthesis


Background: To prepare a good fixed prosthesis an accurate impression is required that recordsthe accurate finish line of the prepared tooth and a portion of the unprepared tooth structure and surrounding gingival tissue. An accurate adaptation of crown is possible only when preparation details are captured adequately in the impression and transferred to the cast. For these reasons, gingival displacement is necessary to capture sub gingival preparation details. The impression must include sufficient unprepared tooth structure immediately adjacent to the finish line for the dentist and laboratory technician to identify the contour of the tooth and all prepared surfaces.

 

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