ABSTRACT
The aim of this research was to evaluate the risk factors related to condylar resorption (CR) after orthognathic surgery. Was realized a systematic review with a search of the literature performed in the electronic databases PubMed, MedLine, Ovid, Cochrane Library for current evidence in the world literature as conducted, and relevant articles were selected in according to inclusion and exclusion criteria and the findings were compared. Eight papers, (follow-up 12 months to 69 months) were including. A sample of 2567 patient with mandible or bi maxillary surgery with an age range from 14 to 46 year old was observed. In 137 patients (5.3 percent) CR was observed , with a 97.6 percent (122) female. CR was related to 118 cases with mandibular deficiencies with high mandibular plane (advancement surgery). CR were present principally in bi maxillary surgery with a 103 cases (75.2 percent) and only two papers show any analysis to the relation with TMJ dysfunction. Current evidence in CR is poor but supports those female patients with mandibular deficiency and high mandibular plane angle submitted to bi maxillary surgery with change in occlusal plane (counterclockwise) are associated with condylar resorption after orthognathic surgery...
El objetivo de esta investigación fue evaluar los factores de riesgo asociados a reabsorción condilar (RC) posterior a cirugía ortognática. Fue realizada una revisión sistemática con una búsqueda de la literatura realizada en bases de dato electrónicos como PubMed, MedLine, Ovid, Cochrane Library buscando actual evidencia en la literatura mundial; artículos relevantes fueron seleccionados según los criterios de inclusión y exclusión, comparando sus resultados. Ocho artículos (tiempo de seguimiento de 12 a 69 meses) fueron incluidos. Se observó una muestra de 2567 pacientes con cirugía mandibular o bimaxilar con una edad de entre 14 y 46 años. En 137 pacientes (5,3 por ciento) se observó reabsorción condilar, siendo el 97,6 por ciento (122 casos) de sexo femenino. La RC fue observada n 118 casos de deficiencia mandibular con un plano mandibular alto (cirugía de avance mandibular). La RC estuvo presente principalmente en cirugías bimaxilares con 103 casos afectados (75,2 por ciento) y solo dos artículos evidenciaron análisis previo de disfunción de ATM. Actualmente la evidencia en RC es limitada pero fundamenta que mujeres con deficiencia mandibular y alto plano mandibular sometidas a cirugía bimaxilar con alteración del plano oclusal (giro horario) son asociadas a la reabsorción condilar después de la cirugía ortognática...
Subject(s)
Humans , Mandibular Condyle , Orthognathic Surgical Procedures/adverse effects , Bone Resorption/etiology , Bone Resorption/pathology , Risk Factors , Temporomandibular Joint Dysfunction Syndrome/etiology , Temporomandibular Joint Dysfunction Syndrome/pathologyABSTRACT
TMJ dysfunction has difficulties for diagnosing and treating, and its symptoms are variable. TMJ dysfunction is classified as muscular problem, capsular problem, ligamentous problem, internal derangement, or condylar dislocation etc. Treatment modalities for TMJ dysfunction are surgical or conservative one, but they haven't be standardized. Because of anatomical complexities and difficulties of surgical approaches, conservative treatment have been preferred. We've had 30 cases having impressed capsular tightness or internal derangement. They have made an appeal for pain on TMJ area, ROM limitation of joint, clicking etc. We have used the interocclusal splint as treatment modality. In general, the interocclusal splint is classified as the stabilization splint, the repositioning splint, the pivot splint, the soft splint etc. We have applied the stabilization splint or the repositioning splint to the patients according to diagnosis or symptoms. The interocclusal splint is reported to induced the changing activities of muscle, altering the stress or loading of the joint and recapturing or changing condyle- disc-fossa position. As a result, the pain has become reduced and ROM limitation of joint was improved, clicking is eliminated initially. From January 2001 to May 2002, we treated 30 patients who having TMJ dysfunction. Our treatment modality was performed that the interocclusal splints were worn full time for one to four weeks, then phased out. During the mean 10.5 months of follow-up period there had been significant improvements in pain, ROM limitation of joint and clicking. After 6 months, there had been no recurrence in pain and ROM limitation of joint, but 2 cases recurred in clicking that has disappeared. The appliance of interocclusal splint has been an effective method for the initial nonsurgical treatment of the symptoms of TMJ dysfunction. However, more in-depth study by long term follow-up is needed to evaluate recurrence.
Subject(s)
Humans , Diagnosis , Joint Dislocations , Follow-Up Studies , Joints , Ligaments , Recurrence , Splints , Temporomandibular JointABSTRACT
0.05). 3. There was some correlation between condylar change(T2C-T1C) and TMJ dysfunction. It seemed that postoperative condylar change had influenced postoperative TMJ dysfunction, through there was no statistical significance (p>0.05). As we have observed the change of condylar axis in the group that complained of TMJ dysfunction in cases of large amount of mandibular setback. So we consider that the more trying to conserve condylar position will decrease occurrence rate of post operational TMJ dysfunction.