[MIH and compromised permanent first molars. When and which teeth to extract: guidelines].

Introduction: The prevalence of molar incisor hypomineralisation (MIH), the degree of severity of experienced molars, their medium-term survival rate are factors that have reintroduced the decision to extract first permanent molars, forced extractions or chosen therapeutic option.

Material And Method: The author summarizes pedodontic and orthodontic clinical studies in the management of patients with compromised first permanent molars in order to analyze the consequences of single or multiple extractions of these teeth.

Results: Firstly, the consequences of extractions of the first permanent molars in the absence of malocclusion are studied.

[Orthodontic management of obstructive sleep-disordered respiratory disorders].

Through his/her knowledge of cranio-facial growth, the orthodontist plays a leading role within the multidisciplinary team that tracks and treats sleep-disordered breathing (SDB) in children. Correction of craniofacial risk factors (maxillary deficiency and retrognathia) is commonly used by practitioners alongside orthodontic treatment such as OMA and RME in the optimal conditions afforded by childhood growth. Myofunctional therapies are performed to restore correct stomatognathic function and play a central role in the management of SDB in children.