Contributions of Digital Simulation to Orthodontic Therapeutic Decision-Making: A Case Report.

Adult orthodontics aims to achieve optimal functional and aesthetic corrections. However, for several reasons, some patients will wish to benefit from a limited treatment where only certain aspects of a malocclusion will be corrected. In these clinical situations, the therapeutic objectives must be adjusted to the individual needs of the patient insofar as they can bring them real benefits. The use of digital technology makes it possible to study the therapeutic possibilities better and visualize the occlusal results before choosing the best therapeutic approach, especially in cases requiring customization. The aim of this clinical case report is to illustrate the orthodontic compromise made after the analysis of the digital setup in an adult patient who presented with a class III malocclusion but refused orthodontic-surgical therapy and requested an alternative treatment.

Oral and dental abnormalities in Coffin Siris syndrome : A new case report.

INTRODUCTION: Coffin-Siris Syndrome (CSS) is a rare genetic disorder of unknown etiology. It combines digital-ungual abnormalities, facial dysmorphism, developmental and intellectual delay, and other organ-system abnormalities. Oral and dental anomalies are rarer. CASE REPORT: 8-year-old boy with clinical diagnosis of CSS presented facial dysmorphism, sparse hair, a flat and wide nose, absence of nails on 3rd and 5th fingers of the right hand and 3rd and 4th fingers of the left hand, malformation of the feet, toes with nail hypoplasia. Oral and dental anomalies included : bilateral complete cleft lip and palate, delayed eruption of permanent teeth, presence of supernumerary tooth and taurodontism in the first permanent molars. CONCLUSION: Early diagnosis of oral problems and regular follow-up in dentist are necessary to promote good oral health and improve the patient's quality of life.

Fluoride induced corrosion affecting Titanium brackets: A systematic review.

INTRODUCTION: A number of studies have been published regarding the behaviour of titanium inside the oral cavity or in a similar environment. Very often the results converge although they may on occasion be divergent. There appears to be a strong need for a systematic review because of this disparity, with a view to designing an experimental working method. Our study will attempt to analyse the various aspects of this problem. It will therefore focus on fluoride and its impact, as well as on the role it plays in corroding titanium orthodontic brackets (Ti) according to the synthesis and critical analysis drawn from literature. METHODS: An exhaustive bibliography search was conducted in the following databases: PubMed, Science Direct and Cochrane Library using a search equation based on the following key-words: corrosion, titanium brackets and fluoride. RESULTS: Out of 459 identified references, only 5 matched our inclusion criteria. CONCLUSION: Although very few articles look into the impact of fluoride on titanium orthodontic brackets, one may conclude that in the presence of fluoride ions, resistance to corrosion of Ti attachments decreases in the presence of high fluoride concentrations and lengthy exposure to fluoride ions and an acid pH.

Topographic and chemical surface modifications to metal brackets after a period in the mouth.

INTRODUCTION: In the current state of our knowledge, the effects of corrosion on the performance of orthodontic appliances and on patient health are far from clear. Awareness of these problems has led to a growing demand for nickel-free products. Titanium brackets were recently launched on the market as an alternative to stainless-steel brackets. However, the use of fluorides for caries prevention creates a risk of corrosion of these titanium appliances. The aim of this study is to examine the corrosion of stainless-steel and titanium brackets in clinical orthodontic use, focusing on the impact of fluorine. METHODS: After approval by the ethics committee and the informed consent of the patients, 30 candidates for multi-bracket treatment were selected on the basis of certain exclusion criteria. The patients were divided into 4 groups: group 1: titanium brackets and fluorine protection; group 2: titanium brackets without fluorine protection; group 3: stainless-steel brackets and fluorine protection; group 4: stainless-steel brackets without fluorine protection. RESULTS: Analysis of the brackets removed after 4months in the mouth, using scanning electron microscopy (SEM) with phase contrast, revealed a difference in the surface topography of the metal brackets and the presence of chromium coating on the surface of the titanium appliances.

[Tongue retraining and occlusal stability in a young adult. Case report]. / La rééducation linguale et la stabilité occlusale chez le jeune adulte. A propos d'un cas clinique.

The clinical observation describes the case of a 20-year-old woman who has consulted for aesthetic and functional reasons. She presents a skeletal class III normodivergent, an occlusal class III with a lower proalveoli quite marked. In addition, a lingual dysfunction which manifests itself by important anterior diastema and dento-dental disharmony at the upper jaw complicates the case. The undertaken therapeutic project starts with a first step of a lingual praxis rehabilitation, followed by an orthodontic step and upper lateral incisors-plasty. The purpose of those results is the evaluation of the stability two years later, which was reported positive.

[Root resorption associated to orthodontic treatment: a clinical case]. / La résorption radiculaire liée au traitement orthodontique: a propos d'un cas.

Root resorption associated to orthodontic treatment is of multiple etiologies and a non intentional iatrogenic side effect which exists in almost all the orthodontic treatment. This clinical case of an apparently healthy patient illustrates the occurrence during the orthodontic treatment of a root resorption interesting the left central incisor, victims of previous traumatism and presenting a moderate periodontal attachment loss. The orthodontic treatment was carried out with light and continuous forces and a per-orthodontic periodontal maintenance in respect of periodontal requirements. As soon as the root resorption on the left central incisive was diagnosed, the active orthodontic treatment was interrupted in order to stabilize the lesion and a regular clinical and radiological monitoring was established.