RESUMO
AIM: To evaluate long-term neuromuscular adaptation with the flexible fixed functional appliance. PATIENTS AND METHODS: Electromyography (EMG) was performed on 15 young, growing females with Class II Division 1 malocclusion treated with a flexible fixed functional appliance. Bilateral EMG activity from the anterior temporalis and masseter muscles was monitored longitudinally to determine changes in posture, swallowing, and maximum voluntary clenching during a 24-month observation period. RESULTS: There was a significant decrease in EMG activity during saliva swallowing (p < 0.05) and maximum clenching (p < 0.05 at 3 months and p < 0.01 at 1 month after treatment); this persisted for up to 1 month but gradually returned to pre-appliance levels near the end of 6 months. It remained stable from then on until the end of the observation period (24 months). CONCLUSION: The anterior temporalis and masseter muscles clearly responded to appliance therapy. The neuromuscular adaptation documented after 6 months of treatment remained stable over a 24-month observation period.
Assuntos
Má Oclusão Classe I de Angle/fisiopatologia , Má Oclusão Classe I de Angle/reabilitação , Músculo Masseter/fisiopatologia , Contração Muscular/fisiologia , Junção Neuromuscular/fisiopatologia , Aparelhos Ortodônticos Funcionais , Músculo Temporal/fisiopatologia , Adaptação Fisiológica , Adolescente , Criança , Eletromiografia , Feminino , Seguimentos , Humanos , Músculo Masseter/inervação , Resultado do TratamentoRESUMO
From grandmothers to medical professionals, everyone seems to have a list of symptoms they believe are linked to teething. During this time period of an infant's life, passive immunity due to maternal antibodies wanes and exposure to a wide variety of childhood illnesses occurs. Parental false beliefs associated with teething may interfere with the prompt diagnosis and management of a range of serious illnesses. Strong parental beliefs which are not borne out by evidence will unlikely change until professionals (most of whom are also parents) change theirs. Therefore, there is a need to know the facts and the false beliefs attributed to teething. Medical professionals need to be educated about teething to provide reasonable explanations to concerned caregivers. This article examines the signs and symptoms frequently attributed to teething and their possible alternative causes. The contemporary principles of the management of teething are discussed, including supportive care.
