Avaliação do potencial de modifcação labial do ácido hialurônico em pacientes reabilitados com próteses híbridas implantossuportadas de maxilas totais

Abstract

Understanding the problem of upper arches rehabilitation with implants in relation to the complain of lack of lip support, this study was designed to assess the potential of hyaluronic acid (HA) to increase lips volume and to fill the nasogenian groove in this group of patients. One hundred patients with rehabilitated maxilla with implant-supported hybrid fixed total prosthesis were selected. Of these, 86 attended the initial consultation and eight individuals were included in the study. The sample inclusion criteria were use of implant-supported fixed prosthesis in the maxilla with complaint of thin lips and deepening of the nasogenian groove and patients who agreed to participate of the study. Linear and angular measurements were drawn on initial an after procedure teleradiographies in order to assess lip protrusion before and after hyaluronic acid filling. Also standardized photographs were taken before and after the procedures, which were assessed by dentists and lay people. The participants of the study answered a questionnaire in order to assess the degree of satisfaction with the procedure. Hyaluronic acid filling presented significant differences (t1-t2) for upper and lower lip protrusion p= 0.001 and p=0.02, respectively. For the upper lip, the mean protrusion was 0.76mm + 1.88 (t1) before the filling with hyaluronic acid procedure and after filling the mean protrusion was 3.45mm + 1.58 (t2). Independent evaluators and practitioners assessed the facial profiles after the filling with HA, mostly as medium and significant better alterations. It can be concluded that lip and nasogenian sulcus filling in individuals rehabilitated with implant-supported total fixed implants increased self-esteem and provided close to normal lip protrusion.