China
Africa
Explore chapters and articles related to this topic
Temporomandibular Joint Disorders
Published in R James A England, Eamon Shamil, Rajeev Mathew, Manohar Bance, Pavol Surda, Jemy Jose, Omar Hilmi, Adam J Donne, Scott-Brown's Essential Otorhinolaryngology, 2022
Condylar hyperplasia is due to either overgrowth of the condyle centre on one side before or during puberty, or continued growth after completion of puberty but with cessation of growth on the affected side. Patients present with progressive malocclusion, usually with centreline deviation and associated chin point deviation (hemimandibular hyperplasia). They may also present with bowing of the mandible and downward cant of dental occlusion (hemimandibular hypertrophy).
Cysts and Tumours of the Bony Facial Skeleton
Published in John C Watkinson, Raymond W Clarke, Terry M Jones, Vinidh Paleri, Nicholas White, Tim Woolford, Head & Neck Surgery Plastic Surgery, 2018
Julia A. Woolgar, Gillian L. Hall
This cartilage-capped exostosis is rare in the jaws, occurring mainly in the mandiblular condyle and coronoid process.34 Differentiation from condylar hyperplasia can be difficult. Peak presentation is in females in the 4th–5th decade.42 The slow-growing swellings cause progressive deformity. Histologically, both the overgrowth of bone and its cartilage cap are entirely benign. Any cellular atypia, especially within the cartilage, may indicate development of a secondary chondrosarcoma, a rare but well-documented occurrence.33
Cleft lip and palate: developmental abnormalities of the face, mouth and jaws
Published in Professor Sir Norman Williams, Professor P. Ronan O’Connell, Professor Andrew W. McCaskie, Bailey & Love's Short Practice of Surgery, 2018
Professor Sir Norman Williams, Professor P. Ronan O’Connell, Professor Andrew W. McCaskie
Condylar hyperplasia is an idiopathic condition seen in patients between 15 and 30 years of age, more common in women than men, in which there is hyperplasia or overgrowth of the neck of the mandibular condyle. This gives an asymmetrical growth to the jaw in both a vertical and horizontal plane.
Condylectomy as a treatment approach to condylar hyperplasia
Published in Orthodontic Waves, 2021
Sarah Abu Arqub, Carlos Villegas, Flavio Uribe
The first case report of CH was outlined in the literature in 1836 [20]. Afterwards, different terminologies and classifications have been proposed to describe this clinical joint condition. The terms, hemimandibular hyperplasia (HH) and hemimandibular elongation (HE) were initially proposed by Obwegeser and Makek [10] who discussed the common causes of mandibular asymmetry with emphasis on the hyperactivity of the condylar growth regulation centres. In their classification, CH was classified into three main categories: Type 1 (HE), normal condylar head with an elongated neck, prominent horizontal growth, and displaced chin and midline to the opposite side. Type 2 (HH) excessive growth of the condylar neck, head and ascending ramus with more pronounced asymmetry combined with a vertical growth vector. Type 3 (hybrid: combinations of Type 1 and 2). More recently, Wolford et al. [21] proposed a classification based on clinical features and considered CH a pathological condition that affects the growth of the condylar head, neck and mandible in general. The classification included: condylar hyperplasia Type 1 (CH1), which refers to condylar and horizontal mandibular growth. This form corresponds to Obwegeser’s HE and may present clinically as bilateral symmetrical (CH1A) or unilateral asymmetrical (CH1B). As for condylar hyperplasia type 2 (CH2), a unilateral enlargement of the condylar head, neck, ramus, and body of the mandible caused either by osteochondroma of the condyle (CH2A) or an exophytic osteochondroma (CH2B) is observed. This type correspond to Obwegeser’s HH classification [10]. CH3 relates to hyperplasia associated with rare benign tumours originating from the mandibular condyle and CH4 relates to hyperplasia associated with malignant tumours of condylar origin [21–23].