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Orthodontics, formally orthodontics and dentofacial orthopedics, is the first specialty of dentistry that is concerned with the study and treatment of malocclusions (improper bites), which may be a result of tooth irregularity, disproportionate jaw relationships, or both. Orthodontic treatment can focus on dental displacement only, or can deal with the control and modification of facial growth. In the latter case it is better defined as "dentofacial orthopaedics".
For comprehensive orthodontic treatment, most commonly, metal wires ("Jushi") are inserted into orthodontic brackets (see dental braces), which can be made from stainless steel or a more aesthetic ceramic material. The wires interact with the brackets to move teeth into the desired positions. Other methods may include Invisalign, which consists of clear plastic aligners that move teeth.
Additional components—including removable appliances ("plates"), headgear, expansion appliances, and many other devices—may also be used to move teeth and jaw bones. Functional appliances, for example, are used in growing patients (age 5 to 14) with the aim of modifying the jaw dimensions and relationship if these are altered. This therapy, termed Dentofacial Orthopedics, is frequently followed by fixed multibracket therapy ("full braces") to align the teeth and refine the occlusion.
Orthodontics is the study of dentistry that is concerned with the treatment of improper bites, and crooked teeth. Orthodontic treatment can help fix the patient's teeth and set them in the right place. Orthodontists usually use braces and retainers to set the patient's teeth. There are, however, orthodontists who work on reconstructing the entire face rather than focusing exclusively on teeth. After a course of active orthodontic treatment, patients will typically wear retainers, which maintain the teeth in their improved positions while surrounding bone reforms around them. The retainers are generally worn full-time for a period, anywhere from just a few days to a year, then part-time (typically, nightly during sleep) for as long as the orthodontist recommends. It is possible for the teeth to stay aligned without regular retainer wear. However, there are many reasons teeth will crowd as a person ages, whether or not the individual ever experienced orthodontic treatment; thus there is no guarantee that teeth will stay aligned without retention. For this reason, many orthodontists prescribe night-time or part-time retainer wear for many years after orthodontic treatment (potentially for life). Adult orthodontic patients are more likely to need lifetime retention.
In diagnosis and treatment planning, the orthodontist must (1) recognize the various characteristics of a malocclusion or dentofacial deformity; (2) define the nature of the problem, including the etiology if possible;(3) design a treatment strategy based on the specific needs and desires of the individual; and (4) present the treatment strategy to the patient in such a way that the patient fully understands the ramifications of his/her decision.
Orthodontics was the first recognized specialty field within dentistry. Many countries have their own systems for training and registering orthodontic specialists. A two- to four-year period of full-time post-graduate study is required for a dentist to qualify as an orthodontist.
In order to be enrolled as a resident an orthodontics program approved by the Commission on Dental Accreditation (CODA), the dentist must have graduated with a DDS, DMD, BDS or equivalent. Entrance into an accredited orthodontics program is extremely competitive, and generally lasts 2–3 years. Orthodontic residency programs can award the specialty Certificate (non-degree) alone, or in conjunction with a Master of Science degree, or Doctor of Science degree, depending on the individual research requirements. The class size, tuition, stipend and number of patients seen and treated will all depend on the location and setting of the program (hospital vs. university). Each training program has its own goals and treatment philosophy, however, most U.S. orthodontic programs focus on fixed straight wire appliances. All the graduates must also complete the written portion of the American Board of Orthodontics (ABO) examinations.
In order to become Board Certified, a practicing orthodontist must present six cases that have been treated entirely by the orthodontist to the ABO examiners. The orthodontist then must appear in person in front of a panel of examiners to defend the clinical decisions regarding those cases. Once certified, the certificate is renewed every 10 years, and the practitioner can add the title "Diplomate, American Board of Orthodontics".
Job outlook as a recent U.S. orthodontic graduates depend on the location of employment. Typically, more popular destinations (such as California, NYC, Seattle, Las Vegas and Texas) are heavily saturated with orthodontists. Traditional, practice transition situations (new orthodontist buying out the seller orthodontist) are becoming rare as the orthodontic market has been saturated with new and old practitioners, general dentists performing orthodontics, corporate clinics and older orthodontists delaying retirement.
In the United Kingdom, this training period lasts three years, after completion of a membership from a Royal College. A further two years is then completed to train to consultant level, after which a fellowship examination from the Royal College is sat. In other parts of Europe, a similar pattern is followed. It is always worth contacting the professional body responsible for registering orthodontists to ensure that the orthodontist you wish to consult is a recognised specialist.
A number of dental schools and hospitals offer advanced education in the specialty of Orthodontics to dentists seeking postgraduate education. The courses range from two to three years (with the majority being 3 years) of full-time classes in the theoretical and practical aspects of orthodontics together with clinical experience. Generally, admission is based on an application process followed by an extensive interviewing process by the institution, in order to select the best candidates. Candidates usually have to contact the individual school directly for the application process.
Similar to the ABO, the Canadian orthodontic specialist can take a two-part examinations (Written NDSE and Oral NDSE) offered by the Royal College of Dentists of Canada (RCDC) in their final year of the orthodontics training. Upon completion of the examinations, the orthodontist is admitted to the RCDC as a Fellow and can add the following title, FRCD(C).
In India, many dental colleges affiliated to universities offer orthodontics as specialization in Master of Dental Surgery (M.D.S) programme.The minimum qualification for M.D.S is Bachelor of Dental Surgery ( B.D.S ). The present course for MDS in Orthodontics stands at 3 years in all dental colleges in India which are recognised by the Dental Council of India.
In Iran, Orthodontics and Dentofacial Orthopedics is known as a specialty since 1978 and general dentists after participating in a comprehensive national exam (which is held once a year) and fulfill good rankings among all participants, can begin their postgraduate course. After three years of postgraduate academic training, students participate in a national board exam for final evaluation and finally if they can reach the determined scores, they will be recognized as specialist orthodontists. Iranian Association of Orthodontists (IAO) is established in 1978 and has been contributed in several national and international congresses since its establishment.
In Bangladesh to be enrolled as a student or resident in post-graduation Orthodontic course approved by Bangladesh Medical and Dental Council (BM&DC), the dentist must graduate with a BDS or equivalent. At present BM&DC recognized program in Ortho[lpl]larded by Bangladesh college of Physician and Surgeons(BCPS). Bangladesh Orthodontic Society (BOS) was formed in 1993.
In Pakistan to be enrolled as a student or resident in postgraduation orthodontic course approved by Pakistan medical and dental council, the dentist must graduate with a BDS or equivalent degree. At present PMDC recognized program in orthodontics as MDS (master in dental surgery) orthodontics and FCPS orthodontics (fellow of college of physician and surgeons Pakistan) as 4 years post graduation degree programs, later of which is conducted by CPSP Pakistan. 
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