[The smile and dento-facial orthopaedics]. / Sourire et orthopédie dento-faciale.

INTRODUCTION: The mouth is an essential feature of the human body since it is there that the breath and food of life pass. In addition, it bears witness to our emotions. Today, the smile has become a major means of communication and of "self-affirmation". OBJECTIVE: The first task of the orthodontist is to restore correct function while, obviously, also contributing to enhance the patient's appearance. MATERIALS AND METHODS: In this article, we will present six cases to demonstrate that the leading mission of orthodontics is to restore the occlusion and function.

Statistical study on bracket debonding rate with the win lingual technique.

The aim of this study is to present the results of a statistical inquiry measuring the bracket debonding rate using the WIN lingual technique. This inquiry was performed in the Odontology Unit at the Rothschild Hospital in the framework of the Lingual Orthodontics University Diploma at Paris VII university. Results were gathered by 8 orthodontic practitioners during two years of training from all their patients treated with the WIN lingual technique. The sample study comprised 33 patients treated exclusively with the WIN lingual technique. The 8 practitioners filled in a questionnaire relating to bracket bond failure in their patients in the course of treatment. In all, sixty-two questionnaires were analyzed. The data were then computed using the statistical tool of R software version 3.1.3. The results of this analysis demonstrate the reliability of the WIN system evidenced by an average of 2.1 bracket bond failures over the two-year treatment period, i.e. approximately 1 bracket per patient per year. Given the right conditions, (precise prescription, compliance with bonding protocols), the bond failure rate can be lower still, even compared with the buccal technique or relative to other lingual techniques. The benefits of lingual appliances, particularly in the WIN system, are essential to clinicians in their daily practice in order to optimize the quality and duration of their treatments with a view to ensuring patient satisfaction.

[Orthognathic surgery: from the essential to the superfluous]. / La chirurgie orthognathique : de l'indispensable au superflu.

The majority of adult patients who consult for smile reconstruction or for functional problems can be satisfied by benefitting from orthodontic treatment. This treatment, whatever the orthodontic technique, is carried out following the establishment of a diagnosis and treatment plan taking into account some restrictions of a prosthetic, periodontal or financial nature. There are, however, situations in which the esthetic and functional balance is severely affected or quite simply impossible to correct without modifying the bone structures. Orthognathic surgery is essential in such cases. In this article we will deal in particular with three frequently encountered situations: openbite, Class III and finally Class II skeletal discrepancies. The aim will be to try to define the interest that these so-called ortho-surgical treatments represent and at the same time consider the alternatives.

One-step surgery and correction of the transverse dimension of the maxilla using the lingual technique: an original assisted transverse surgery method.

During orthodontic-surgical treatment, orthodontics must facilitate the surgery, and vice-versa. More specifically, surgical adjustment of the transverse dimension of the maxilla and its vertical and/or anteroposterior repositioning require orthodontic support. In addition to the orthodontic appliance, a palatal device is needed to guide and maintain the correction. In the lingual technique, this situation might appear to be difficult to manage since both the appliance and the auxiliaries are located on the same side. We demonstrate a removable tooth-supported expander as well as the use of dua-insertion palatal bands to solve a transverse maxillary deficit less than or equal to 5mm.

Treatment of Class III malocclusions in adults using the Incognito(®) lingual technique.

In orthodontics, as in medicine in general, there is always only one diagnosis. For a given diagnosis, several treatment solutions are available. While these are hard and fast rules, the techniques adopted by orthodontists can vary and yet remain effective, without placing constraints on the practitioner. The lingual technique, originally designed to meet the demands of adult patients for "invisibility" is now comparable or even superior in terms of precision to vestibular techniques. Three clinical Class III cases involving adults and three distinct treatment options are described in this paper.