A method for modeling the mandibular kinematics of a patient, comprising: - acquisition of at least one stereoscopic image of the patient's face by means of a stereoscopic camera, - the construction, from said stereoscopic image, of a three-dimensional surface model of the patient's face, - identifying characteristic elements of the patient's face on said stereoscopic image or on said three-dimensional surface model of the patient's face, - from said characteristic elements, determining, on said stereoscopic image, respectively said three-dimensional surface model of the patient's face, reference points, axes and planes of the patient's face, - obtaining a three-dimensional model (Ms) of the maxillary dental arch and a three-dimensional model (Mi) of the mandibular dental arch of the patient, - the registration of the three-dimensional models of the dental arches with respect to the reference planes (A, B, C) of the three-dimensional surface model of the patient, said registration comprising: - the fixation, on the patient's head, of a headgear carrying a set of markers detectable by the stereoscopic camera, - the generation of a plurality of points (P1-P4) on the dental arches in the three-dimensional surface model of the face, - pointing said points in the patient's mouth by means of a pointer carrying markers detectable by the stereoscopic camera, - the location of the markers of the pointer in relation to the markers of the headgear by the stereoscopic camera during the pointing of each point and the determination of each point in the camera reference frame, - the mapping of points between the camera frame of reference and the three-dimensional surface model, - recording of the patient's mandibular kinematics, in which an arch bearing markers detectable by the stereoscopic camera is fixed to the patient's mandible and attached to the teeth, the headgear being fixed to the patient's head, and the said mandibular kinematics are recorded by following the movements of the markers on the arch with respect to the markers on the headgear by means of the said stereoscopic camera, - applying said recorded mandibular kinematics to the three-dimensional models of the dental arches, to animate said three-dimensional models (Ms, Mi). - acquisition of at least one stereoscopic image of the patient's face by means of a stereoscopic camera, - the construction, from said stereoscopic image, of a three-dimensional surface model of the patient's face, - identifying characteristic elements of the patient's face on said stereoscopic image or on said three-dimensional surface model of the patient's face, - from said characteristic elements, determining, on said stereoscopic image, respectively said three-dimensional surface model of the patient's face, reference points, axes and planes of the patient's face, - obtaining a three-dimensional model (Ms) of the maxillary dental arch and a three-dimensional model (Mi) of the mandibular dental arch of the patient, - the registration of the three-dimensional models of the dental arches with respect to the reference planes (A, B, C) of the three-dimensional surface model of the patient, said registration comprising: - the fixation, on the patient's head, of a headgear carrying a set of markers detectable by the stereoscopic camera, - the generation of a plurality of points (P1-P4) on the dental arches in the three-dimensional surface model of the face, - pointing said points in the patient's mouth by means of a pointer carrying markers detectable by the stereoscopic camera, - the location of the markers of the pointer in relation to the markers of the headgear by the stereoscopic camera during the pointing of each point and the determination of each point in the camera reference frame, - the mapping of points between the camera frame of reference and the three-dimensional surface model, - the fixation, on the patient's head, of a headgear carrying a set of markers detectable by the stereoscopic camera, - the generation of a plurality of points (P1-P4) on the dental arches in the three-dimensional surface model of the face, - pointing said points in the patient's mouth by means of a pointer carrying markers detectable by the stereoscopic camera, - the location of the markers of the pointer in relation to the markers of the headgear by the stereoscopic camera during the pointing of each point and the determination of each point in the camera reference frame, - the mapping of points between the camera frame of reference and the three-dimensional surface model, - recording of the patient's mandibular kinematics, in which an arch bearing markers detectable by the stereoscopic camera is fixed to the patient's mandible and attached to the teeth, the headgear being fixed to the patient's head, and the said mandibular kinematics are recorded by following the movements of the markers on the arch with respect to the markers on the headgear by means of the said stereoscopic camera, - applying said recorded mandibular kinematics to the three-dimensional models of the dental arches, to animate said three-dimensional models (Ms, Mi).