Gingival troughing is the preparation of gingival tissue prior to taking impressions of teeth that have been prepared to receive a dental prosthesis. Fixed restorative dentistry success is dependent on the exquisite fit of restorations. When the restoration does not fit the prepared margins, recurrent caries as well as periodontal issues, such as chronic inflammation of the gingiva, will likely occur in time. Exposure of sub-gingival finish line, with adequate moisture control to capture the finish line details in impression, is the main goal of gingival troughing procedure.