Introduction: Juvenile hypothyiroidism shows various complications depending on the correctitude of substitutive treatment.
Aims of the study: To identify the massive facial changes with occlusive disorders, dental malpositions, altered chronology of dental eruption, periodontal changes in terms of absence of thyroid replacement therapy or drug sub-dosing.
Methods: The study group comprised 24 children, 15 girls and 8 boys; 4 cases of congenital myxedema;19 cases of earned hypothyroidism and the mean age was 9±2.4 years- that presented in their evolution periods of underdosed substitutive thyroxine treatment.
Results: Facial changes: infiltrated facial skin and lips; widened transverse diameter of the skull; microretrognathia 12 cases (52%). pale and infiltrated lingual and jugal mucosa, 14 children (60.8%) lingual fungal detritus; 8 children (34.7%) geographic tongue. Occlusive disorders: frontal malocclusion in the sagittal plane 19 children (80%); front reverse occlusion 8 cases (34.7%); open bite 4 cases (17.4%); lower proalveolodentition with interdental spacing 17 children (68%). Dental malpositions:reverse overlap 11 cases (47.8%), eruption of central upper incisors in vestibular position 1 case (4.3%); bilateral ectopic canine 1 case (4.3%); dentoalveolar incongruence 1 case (4.3%). The chronology of dental eruption: late eruption 19 patients (78.2%); prolonged mixed dentition 14 patients (60.8%); taurodontism upper molars1 case (4.3%); accelerating the teeth eruption when introducing thyroxine therapy between 6 and 8 months. Periodontal changes: pathological dental mobility, pathological diastemas, gingival recession, real periodontal pockets 8 cases (34.7%).
Conclusions: In hypothyroid child prevail the disorders of occlusion and chronology of eruption. Early diagnosis and a well conducted thyroxine treatment requires the prophylaxy of dento-maxillary complications in children.
20 - 23 May 2017
European Society of Endocrinology