Despite major advances in orthodontic tooth movement, orthodontic retention still remains a major problem. It has been estimated that only 10% of the population who have received orthodontics are still in acceptable occlusion as judged by orthodontists 20 years after retention. In addition, very little is known about patients’ perception in relation to orthodontic relapse. Various studies have shown that fixed retention bonded only to canines have relapse, while others have shown that even though relapse exists, it is not significant or clinically relevant. This article summarizes about each aspect of fixed retention.
A Study To determine the Prevalence of malocclusion in primary dentition in suburban population in Chennai
The growth and development of the dentofacial complex involves a series of dynamic changes from the second month of intrauterine life to maturity. In the postnatal period the orthodontist has the unique opportunity to observe the progressive postnatal changes in a child from childhood to maturity. He is therefore entrusted with the responsibility of diagnosing, intercepting and correcting a malocclusion early if necessary even in the deciduous dentition.
The reduction of the transverse dimension of the mandible and the maxilla is one of the crowding etiological factors. Therefore, expansion will not only restore the proper dental arch range, but it will also provide additional space for subsequent alignment. Treatment of transverse discrepancies is supposed to promote arch perimeter increase, often allowing overall teeth-crowding correction.
Cosmetic detailing has become important for orthodontists because most patients evaluate the outcome of treatment by their smiles and the overall enhancement in their facial appearance. The purpose of this article is to examine some cosmetic ideas and present ways in which we can improve the smiles of orthodontic patients. Certain factors which would aid in the cosmetic enhancement of the patient, include, gingivectomy, gingivoplasty , bleaching, veneers, selective contouring, bridges and cosmetic build ups.
“Sleep is a reward for some, a punishment for others”- Issador Ducasse
Sleep disordered breathing (SDB) includes a spectrum of conditions, the most severe of which is obstructive sleep apnea syndrome (OSAS). It is a potentially disabling condition characterised by disruptive snoring, repeated episodes of complete or partial pharyngeal obstruction during sleep resulting in nocturnal hypoxemia, frequent arousals and excessive daytime sleepiness.
The straight wire appliance has supreme control and finishing potential. This case report will evaluate the management of bimaxillary protrusion in adult patient with extraction of premolars. Clinical and cephalometric evaluation revealed Class I Skeletal pattern, Class I dental pattern, bimaxillary protrusion, high mandibular plane angle, increased lower anterior facial height, protruded upper and lower lips, decreased overjet and overbite. The goal of treatment was to use light forces and to provide maximum space for the retraction of anterior teeth. The case was successfully managed by extraction of all first Premolars and fixed appliance therapy using MBT mechanics. Post-treatment changes were good and stable.
Orthodontists always search for a dedicated device to assess the friction in orthodontics and search for low friction esthetic brackets. Until now there is no special device to evaluate static friction in orthodontics. Thus, the aim of this study is to assess the validity and reliability of a newly developed static friction tester which is the first device dedicated to testing static friction in orthodontics and to compare the static friction values of conventional metal and recently introduced ceramic brackets using this new device.
An Oral/Vestibular screen has been widely used as an interceptive orthodontic modality since it was first introduced to the orthodontic profession by Newel about a century ago in 1912. It has been modified by various clinicians to suit the clinical and patient’s needs. Hotz introduced a ring or lip loop to assist in lip exercises to increase the length of short upper lip. Kraus placed holes in the front part of the oral screen to assist mouth breathing patients, initially, during the adjustment period. Other modifications were the inclusion of a lingual screen with the main labio-buccal part; cribs; modified oral screen made of latex etc
The Finite Element Method is a numerical method of analysis that provides the orthodontist with the quantitative data that can extend the understanding of the physiologic reactions that occur and thus allows the study of stress distribution in biological system. Thus, the purpose of this research is to create a realistic Finite Element Model to calculate the stress in the dental root from orthodontic tooth movement by sliding mechanics and integrate these simulations into the planning of the therapy.