Ch. 108, Temporomandibular Disorders This Publication Is Searchable The Merck Manual of Diagnosis and Therapy Section 9. Dental And Oral Disorders Chapter 108. Hypoplasia Facial deformity characterized on the affected side by a short mandibular ramus, fullness of the face, and deviation of the chin to the affected side and on the unaffected side by an elongated mandible and flatness of the face. This condition usually results from trauma, infection, or irradiation during the growth period.
Mandibular deviation causes malocclusion.
Treatment consists of surgical shortening of the unaffected side of the mandible or lengthening of the affected side. Presurgical orthodontic therapy helps optimize results. All rights reserved.