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Orthod Fr ; 91(1-2): 57-67, 2020 06 01.
Artículo en Francés | MEDLINE | ID: mdl-33146134


Since 1907, the international community has used Angle's classification to assess the mesio-distal relationships of the dental arches. It is the basis of the diagnosis of malocclusion in the sagittal dimension and indicates or not an orthodontic correction treatment. This work was aimed to inventory the classification methods of malocclusions used today. Indices of treatment need were also presented because they are based on one or more occlusal anomalies to indicate treatment. The classifications were criticized and the contribution of a functional analysis based on the use of the trilogy setting, centering and guiding was detailed. The type of anomalies (skeletal and dental) must be completed by the analysis of the occlusal anomaly of setting (centering or guiding) and of the category of occlusion (functional occlusion, functional malocclusion or pathogenic malocclusion), ie its possible pathogenic impact on orofacial structures. A consensus on the classification of occlusal anomalies is necessary in order to better identify the anomalies and their global repercussions, and to better define the needs for orthodontic treatment.

Maloclusión , Oclusión Dental , Humanos , Maloclusión/diagnóstico , Maloclusión/terapia
Cranio ; 35(2): 86-93, 2017 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-27077248


OBJECTIVE: The purpose of this retrospective study is to evaluate a clinical diagnostic sign for disc displacement without reduction (DDWR), the absence of additional condylar translation during opening compared with protrusion. METHOD: Thirty-eight electronic axiographic and magnetic resonance imaging (MRI) examinations of the TMJ were analyzed in order to compare the opening/protrusion ratio of condylar translation between non-painful DDWR and non-DDWR. RESULT: According to the Mann-Whitney U test, the opening/protrusion ratio in non-painful DDWR differs significantly from non-DDWR (p < 0.0001). DISCUSSION: Among non-painful DDWR, there is no additional condylar translation during opening in comparison with protrusion, and this is probably also the case for DDWR without limited opening, which is a subtype that has not been validated by the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). Comparative condylar palpation can analyze this sign, and therefore, further comparative investigations between MRI and clinical examination are needed to validate the corresponding clinical test.

Trastornos de la Articulación Temporomandibular/patología , Femenino , Humanos , Registro de la Relación Maxilomandibular , Imagen por Resonancia Magnética , Masculino , Palpación , Estudios Retrospectivos , Disco de la Articulación Temporomandibular/diagnóstico por imagen , Disco de la Articulación Temporomandibular/patología , Trastornos de la Articulación Temporomandibular/diagnóstico , Trastornos de la Articulación Temporomandibular/diagnóstico por imagen , Adulto Joven
Orthod Fr ; 87(1): 13-22, 2016 Mar.
Artículo en Francés | MEDLINE | ID: mdl-27083219


The success is evidenced by the longevity of aesthetic and functional therapeutic result. The occlusal «postorthodontic¼ failure could result in dental instability, functional discomfort, dental or musculo-articular complaint. Analysis of the occlusion research potential occlusal pathogenic dysfunction listed in stabilizing (shimming), centering and guiding anomalies. The large capacity of tolerance of the masticatory system makes it difficult to define the border between physiology and pathology but it is necessary to have benchmarks that can be summarized as follows: - shimming: occlusal contact of mesio-lingual cusp of the first maxillary molars (in Class I, II or III) and occlusal contacts between the canines antagonists; - centering: no transversal deflected occlusion between maximal Intercuspation (ICP) and occlusion in Centric Relation (RCP); - guiding: absence of posterior interference, absence of anterior interference (locking).

Maloclusión/terapia , Ortodoncia Correctiva , Adaptación Fisiológica/fisiología , Fenómenos Biomecánicos , Relación Céntrica , Diente Canino/patología , Oclusión Dental Céntrica , Diagnóstico Diferencial , Humanos , Maloclusión/etiología , Maloclusión/patología , Diente Molar/patología , Osteoartritis/complicaciones , Sistema Estomatognático/fisiopatología , Trastornos de la Articulación Temporomandibular/complicaciones , Insuficiencia del Tratamiento , Dimensión Vertical
Orthod Fr ; 87(1): 77-81, 2016 Mar.
Artículo en Francés | MEDLINE | ID: mdl-27083225


These interventions usually aimed at the correction of the skeletal discrepancy by mandibular retrognatism with an advancement of the distal portion of the mandible after mandibular osteotomy. The position of the condyle is determined during the osteosynthesis with miniplates. Condyles are set back in relation with the supine position of the patient and the weakness of his (her) curarized muscle. All studies show that surgery of mandibular advancement causes a lateral, torque and backward movement of the condyles, all harmful to the condyles. Factors that predispose to condylar resorption are "the patient": a woman, young (between 15 and 40), high mandibular angle, with a history of temporo-mandibular disorders and surgical overload applied to the condyles. What are the possible solutions to avoid failures? Patient preparation before surgery and surgery simulation with an articulator, condylar position control during surgery, working with surgeons to achieve a condylar portion stabilization system (with the CAD), quickly set up a mobilization of the mandible by physiotherapy.

Avance Mandibular/efectos adversos , Osteotomía Maxilar/efectos adversos , Retrognatismo/cirugía , Trastornos de la Articulación Temporomandibular/etiología , Adolescente , Adulto , Factores de Edad , Simulación por Computador , Diseño Asistido por Computadora , Articuladores Dentales , Femenino , Humanos , Masculino , Mandíbula/patología , Cóndilo Mandibular/patología , Planificación de Atención al Paciente , Modalidades de Fisioterapia , Retrognatismo/patología , Factores Sexuales , Articulación Temporomandibular/patología , Torque , Adulto Joven
J Prosthet Dent ; 114(1): 17-21, 2015 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-25858210


The novelty of the All-on-4 concept for a mandibular implant-supported fixed dental prosthesis is the inclination of the posterior implants. Typically, the anterior implants are placed lingually relative to the canine/incisor teeth and perpendicular relative to the occlusal plane. According to the laws of elementary biomechanics, the long axis of the implant unit should be aligned to the axis of the occlusal loading forces during clenching in the maximal intercuspal position. When several implants are connected by a prosthesis, the mean axis of the overall occlusal loading must be taken into account. The objective of this report was to propose a different position for anterior implants by tilting them labially to counterbalance the distal inclination of the posterior implants.

Implantación Dental Endoósea/métodos , Implantes Dentales , Prótesis Dental de Soporte Implantado , Mandíbula/cirugía , Anciano , Fenómenos Biomecánicos , Fuerza de la Mordida , Relación Céntrica , Implantación Dental Endoósea/instrumentación , Retención de Dentadura , Dentadura Completa Inferior , Estética Dental , Femenino , Humanos , Arcada Edéntula/rehabilitación , Arcada Edéntula/cirugía , Planificación de Atención al Paciente , Dimensión Vertical