Aline Monise Sebastiani1, Flares Baratto-Filho2, Daniel Bonotto3, Leandro Eduardo Kluppel4, Nelson Luis Barbosa Rebellato4, Delson João da Costa4, Rafaela Scariot2. 1. Student of graduate program in dentistry at Federal Univesity of Parana, Curitiba, PR, Brazil. Electronic address: Sebastiani.aline@gmail.com. 2. Professor of the graduate program in dentistry, Positivo University, Curitiba/PR, Brazil. 3. Professor of Temporomandibular Dysfunction and Orofacial Pain of the Federal University of Parana, Curitiba/PR, Brazil. 4. Professor of Oral and Maxillofacial Surgery residency of the Federal University of Parana, Curitiba/PR, Brazil.
Abstract
OBJECTIVE: To evaluate the influence of orthognathic surgery on the clinical signs and symptoms of temporomandibular disorders (TMDs). STUDY DESIGN: In a cohort study, 54 patients undergoing orthognathic surgery were evaluated with regard to the signs and symptoms of TMDs through subjective and objective assessments. These evaluations were performed 1 week preoperatively (T1), 1 month postoperatively (T2), and 6 months postoperatively (T3). The evaluations included patient variables and surgery. Univariate analyzes were performed to verify the association of the variables (P < .05). RESULTS: The incidence of TMD 6 months after orthognathic surgery was significantly lower (P < .001). TMD intensity decreases significantly in the postoperative period. Females had a higher prevalence of TMD (P = .003) and muscular disorders preoperatively (P = .001). There was a decrease in clicks between T1 and T3 (P = .013). Mouth opening without pain worsened from T1 to T2 (P < .001) and improved from T1 to T3 (P = .015) and T2 to T3 (P < .001). The results were similar for mouth opening with pain (P < .001). In patients undergoing jaw fixation with bicortical screws, mouth opening without pain was significantly less in T3 patients than in patients undergoing fixation with plate and monocortical screws (P = .048). CONCLUSIONS: Orthognathic surgery reduces the clinical signs and symptoms of TMD.
OBJECTIVE: To evaluate the influence of orthognathic surgery on the clinical signs and symptoms of temporomandibular disorders (TMDs). STUDY DESIGN: In a cohort study, 54 patients undergoing orthognathic surgery were evaluated with regard to the signs and symptoms of TMDs through subjective and objective assessments. These evaluations were performed 1 week preoperatively (T1), 1 month postoperatively (T2), and 6 months postoperatively (T3). The evaluations included patient variables and surgery. Univariate analyzes were performed to verify the association of the variables (P < .05). RESULTS: The incidence of TMD 6 months after orthognathic surgery was significantly lower (P < .001). TMD intensity decreases significantly in the postoperative period. Females had a higher prevalence of TMD (P = .003) and muscular disorders preoperatively (P = .001). There was a decrease in clicks between T1 and T3 (P = .013). Mouth opening without pain worsened from T1 to T2 (P < .001) and improved from T1 to T3 (P = .015) and T2 to T3 (P < .001). The results were similar for mouth opening with pain (P < .001). In patients undergoing jaw fixation with bicortical screws, mouth opening without pain was significantly less in T3 patients than in patients undergoing fixation with plate and monocortical screws (P = .048). CONCLUSIONS: Orthognathic surgery reduces the clinical signs and symptoms of TMD.
Authors: Lucas Caetano Uetanabaro; Jennifer Tsi Gerber; Katheleen Miranda Dos Santos; Michelle Nascimento Meger; Delson João da Costa; Erika Calvano Küchler; Aline Monise Sebastiani; Rafaela Scariot Journal: Oral Maxillofac Surg Date: 2022-03-09