Aims of Gingival Displacement
The primary goal of gingival displacement is to create a physical space between the tooth and the surrounding soft tissue, allowing impression material to flow into the sulcus and clearly capture the entire finishing line.
The specific aims of gingival displacement include:
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Enlargement of the Gingival Sulcus.
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Tissue Deflection: Achieving deflection of the tissue both horizontally and vertically to effectively display the entire preparation margin and the root surface immediately apical to it.
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Clarity of the Finishing Line: Ensuring the exact location and configuration of the finishing line for the restoration is duplicated accurately. If the clinician cannot clearly identify the margin on the impression, the dental laboratory will be unable to either.
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Development of Adequate Emergence Profile: Providing the laboratory with the necessary visual data to correctly contour the restoration as it emerges from the gingiva.
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Control of Gingival Bleeding and Exudate: Creating a dry field by controlling the flow of gingival fluids and preventing haemorrhage that could compromise the impression material.