Dental and Craniofacial Findings in Eight Miniature Schnauzer Dogs Affected by Myotonia Congenita: Preliminary Results

摘要: Myotonia is a clinical sign characterized by the delay of skeletal muscle relaxation following cessation voluntary activity or termination an electrical mechanical stimulus. Recently, Miniature Schnauzers with myotonia congenita associated defective chloride ion conductance across membrane were identified. Congenital in these dogs appears to follow autosomal recessive mode inheritance. Craniofacial and dental findings eight Schnauzer are described present paper. These include: delayed eruption both deciduous permanent dentition: persistent dentition; unerupted partially erupted teeth: crowding rotation premolar incisor missing increased interproximal space between maxillary fourth first molar decreased canine lateral inability fully close mouth due malocclusion: distoclusion: and, mandibular range motion. A long narrow skull flattened zygomatic arch greater body curvature also consistent affected dogs. The small number studied prevents conclusive statements about origin abnormalities, however it interesting that only 1 45 unaffected showed similar traits.