Oral manifestations and uncommon finding in children with Moebius syndrome: report of two cases

Moebius syndrome represents a rare congenital disorder characterized by non-progressive unilateral or bilateral paralysis of the facial and abducens nerves. The aim of this study is to report the oral and dental manifestations of Moebius syndrome present in two Brazilian children. Clinical case 1: 9-year-old girl, diagnosed with Moebius-Poland syndrome, presented to the Baby Clinic of (omitted information) for preventive dental treatment. Clinical and radiographic examination revealed anterior open bite, unilateral crossbite, microstomia, lack of buccal elasticity, dry labial mucosa, dental fluorosis in upper and lower teeth associated with enamel hypoplasia, dental crowding, upper right canine ectopic eruption, palate ogival, micrognathism, lip sealing and adequate lingual tonus. Clinical case 2: 26-month-old girl, attended in the same service for preventive dental treatment. Clinical and radiographic examination revealed anterior open bite, microstomia, lack of buccal elasticity, high arched palate, hypotonic tongue, micrognathism, inadequate lip seal and dental caries. In both cases, episodes of dentoalveolar trauma were related by parents. Pediatric dentists play a fundamental role in the early diagnosis of oral and facial characteristics that may be present from birth and imply potential repercussions on the development of the stomatognathic system.