• Raquel Pippi Antoniazzi, Alessandra Ramires Vieira, Joana Luz Da Rosa, Kivia Linhares Ferrazo, Fabricio Batistin Zanatta, and Carlos Alberto Feldens.
• School of Dentistry, Franciscan University Center , Santa Maria , Brazil.
• Acta Odontol. Scand. 2014 Nov 1; 72 (8): 1025-31.

ObjectiveThe aim of the present study was to evaluate the effect of periodontal dressing on post-operative pain and swelling after surgical crown lengthening.Materials And MethodsA blind, randomized, clinical trial was carried out with 36 patients. Following surgical crown lengthening, the individuals were randomly allocated to the periodontal dressing group (PDG) and control group (CG, non-placement of periodontal dressing). Pain and discomfort were analyzed using a visual analog scale (VAS), verbal scale (VS) and the number of analgesics consumed in 7 days post-operatively. Post-operative infection, stability of the gingival margin and type of healing were also evaluated.ResultsThe PDG had a significantly higher percentage of responses of 'strong pain' on the VS in the first day post-operatively (33.3% vs 5.3%, p = 0.03) and greater pain on the first and second days post-operatively based on the VAS. Moreover, a significant difference between groups was found regarding gingival swelling after 7 days. However, gingival recession was found in 57.8% of the sites in the CG and only 5.5% of sites in the PDG. No change in condition was found among individuals with conjunctive tissue/bone exposure in the CG in the immediate post-operative period and 80% of the patients in the PDG had healing by first intention after 7 days.ConclusionThe use of periodontal dressing seems to be preferable following surgical crown lengthening with connective tissue/bone exposure. However, adequate post-operative analgesic strategies should be employed due to the possibility of intense pain in the first 24 hours.

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