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[Temporomandibular joint (TMJ): Condyle hyperplasia and condylectomy]
1Université Lille, U1008, médicaments et biomatériaux à libération contrôlée, 59000 Lille, France; Département universitaire de chirurgie maxillo-faciale et stomatologie, hôpital Roger-Salengro, CHU de Lille, boulevard du Prof-Emile-Laine, 59037 Lille cedex, France; AIMOM-Association internationale de médecine orale et maxillo-faciale, 7 bis, rue de la Créativité, 59650 Villeneuve-d'Ascq, France.
Condyle hyperplasia, a disorder of the temporomandibular joint (TMJ), results from cartilage growth dysregulation. Surgical interventions like condylectomy can correct associated facial and dental deformities.
Area of Science:
- Dentistry
- Orthodontics
- Surgical Pathology
Background:
- The temporomandibular joint (TMJ) exhibits unique embryological and physiological characteristics.
- Condyle hyperplasia is a TMJ disorder characterized by abnormal growth of the mandibular condyle.
- This condition leads to progressive enlargement of the condyle, ramus, and hemiface, causing significant skeletal and dental malformations.
Purpose of the Study:
- To explain the etiology of condyle hyperplasia.
- To describe the resulting mandibular and dento-alveolar deformations.
- To discuss surgical management options for condyle hyperplasia.
Main Methods:
- Review of embryological and physiological factors contributing to condyle hyperplasia.
- Analysis of the biomechanical consequences of condyle hyperplasia on mandibular structure.
- Evaluation of surgical outcomes for condylectomy and orthognathic surgery.
Main Results:
- Condyle hyperplasia originates from dysregulation in the prechondroblast cell layer of the cartilage cap.
- Mandibular deformation impacts basal bone, leading to compensatory dento-alveolar changes.
- Condylectomy addresses some dento-alveolar compensations, often necessitating further orthognathic surgery.
Conclusions:
- Condyle hyperplasia is a distinct TMJ pathology with predictable developmental consequences.
- Surgical correction, including condylectomy and potentially orthognathic surgery, is effective in managing the deformities associated with condyle hyperplasia.
