THE WINNERS

THE WINNERS

Dental Health Care

Welcome!

This topic provides you information on dentistry and basic dental health care. Dental health care is important as it:
* Prevents tooth decay
* Prevents gum disease
* reduce need for fills
* Helps prevent bad breath
* Prevents staining
* Improves general health

Saturday, January 17, 2009

Barodontalgia

Barodontalgia, commonly known as tooth squeeze and previously known as aerodontalgia, is a pain in tooth caused by a change in atmospheric pressure. The pain usually ceases at ground level. The most common victims are SCUBA divers (because in deep dives pressures can increase by several atmospheres) and military pilots (because of rapid changes). In pilots, barodontalgia may be severe enough to cause premature cessation of flights.

Most of the available data regarding barodontalgia is derived from high-altitude chamber simulations rather than actual flights. Barodontalgia prevalence was between 0.7% and 2% in the 1940s, and 0.3% in the 1960s.

Similarly, cases of barodontalgia were reported in 0.3% of high altitude-chamber simulations in the German Luftwaffe.

The rate of barodontalgia was about 1 case per 100 flight-years in the Israeli Air Force. During War World II, about one-tenth of American aircrews had one or more episodes of barodontalgia. In a recent study, 8.2% of 331 Israeli Air Force aircrews, reported at least one episode of barodontalgia.

Barodontalgia is a symptom of dental disease, for example inflammatory cyst in the mandible.


Classification

The Fédération dentaire internationale describes 4 classes of barodontalgia. The classes are based on signs and symptoms. They also provide specific and valuable recommendations for therapeutic intervention.

Oral and maxillofacial surgery

Oral and maxillofacial surgery is surgery to correct a wide spectrum of diseases, injuries and defects in the head, neck, face, jaws and the hard and soft tissues of the oral and maxillofacial region. It is a recognized international surgical specialty.


Regulations

  • In the U.S.A., Canada, Australia, and New Zealand, oral and maxillofacial surgery is one of the 9 specialties recognized by the American Dental Association, Royal College of Dentists of Canada, and Royal Australasian College of Dental Surgeons, however some training programs lead to the trainee obtaining qualifications in both Medicine and Dentistry.
  • In the United Kingdom, Oral Surgery is a specialty recognized and regulated by the General Dental Council as a Dental specialty while maxillofacial surgery ("Maxfacs"/"Maxfax") is a specialty recognized and regulated by the General Medical Council as a medical specialty requiring both medical and dental degrees and culminating in the qualification FRCS(OMFS).
  • In the European Union, The Directive 2001/19/EC also distinguishes oral Surgery from craniomaxillofacial surgery, which requires both dental and medical qualifications, with the exception of Poland.
  • In South Africa Oral and Maxillofacial Surgery is one of the 9 specialties recognized by the South African Dental Association.

In other parts of the world oral and maxillofacial surgery as a specialty exists but under different forms as the work is sometimes performed by a single or dual qualified specialist depending on each country's regulations and training opportunities available.


Oral and maxillofacial surgeons

An oral and maxillofacial surgeon is a regional specialist surgeon treating the entire craniomaxillofacial complex: anatomical area of the mouth, jaws, face, skull, as well as associated structures.

Maxillofacial surgeons are usually initially qualified in dentistry and have undergone further surgical training. Some OMS residencies integrate a medical education as well & an appropriate degree in medicine (MBBS or MD or equivalent) is earned, although in the United States there is legally no difference in what a dual degree OMFS can do compared to someone who earned a four year certificate. Oral & maxillofacial surgery is universally recognized as a one of the nine specialties of dentistry. However also in the UK and many other countries OMFS is a medical specialty as well culminating in the FRCS (Fellowship of the Royal College of Surgeons). Regardless, all oral & maxillofacial surgeons must obtain a degree in dentistry (BDS, BDent, DDS, or DMD or equivalent) before being allowed to begin residency training in oral and maxillofacial surgery.

They also may choose to undergo further training in a 1 or 2 year subspecialty fellowship training in the following areas:

  • Head and neck cancer - microvascular reconstruction
  • Cosmetic facial surgery
  • Craniofacial surgery/Pediatric Maxillofacial surgery
  • Cranio-maxillofacial trauma

The popularity of oral and maxillofacial surgery as a career for persons whose first degree was medicine, not dentistry, seems to be increasing. Integrated programs are becoming more available to medical graduates allowing them to complete the dental degree requirement in about 3 years in order for them to advance to subsequently complete Oral and Maxillofacial surgical training.

Surgical procedures

Treatments may be performed on the craniomaxillofacial complex: mouth, jaws, neck, face, skull, and include:

  • Dentoalveolar surgery (surgery to remove impacted teeth, difficult tooth extractions, extractions on medically compromised patients, bone grafting or preprosthetic surgery to provide better anatomy for the placement of implants, dentures, or other dental prostheses)
  • Diagnosis and treatment of benign pathology (cysts, tumors etc.)
  • Diagnosis and treatment (ablative and reconstructive surgery, microsurgery) of malignant pathology (oral & head and neck cancer).
  • Diagnosis and treatment of cutaneous malignancy (skin cancer), lip reconstruction
  • Diagnosis and treatment of congenital craniofacial malformations such as cleft lip and palate and cranial vault malformations such as craniosynostosis, (craniofacial surgery)
  • Diagnosis and treatment of chronic facial pain disorders
  • Diagnosis and treatment of temporomandibular joint (TMJ) disorders
  • Diagnosis and treatment of dysgnathia (incorrect bite), and orthognathic (literally "straight bite") reconstructive surgery, orthognathic surgery, maxillomandibular advancement, surgical correction of facial asymmetry.
  • Diagnosis and treatment of soft and hard tissue trauma of the oral and maxillofacial region (jaw fractures, cheek bone fractures, nasal fractures, LeFort fracture, skull fractures and eye socket fractures.
  • Splint and surgical treatment of sleep apnea, maxillomandibular advancement, genioplasty (in conjunction with sleep labs or physicians)
  • Surgery to insert osseointegrated (bone fused) dental implants and Maxillofacial implants for attaching craniofacial prostheses and bone anchored hearing aids.
  • Cosmetic surgery limited to the head and neck: (rhytidectomy/facelift, browlift, blepharoplasty/Asian blepharoplasty, otoplasty, rhinoplasty, septoplasty, cheek augmentation, chin augmentation, genioplasty, oculoplastics, neck liposuction, lip enhancement, injectable cosmetic treatments, botox, chemical peel etc.)

Australia, Canada, New Zealand and the United States

Oral and Maxillofacial Surgery is one of the 9 dental specialties recognized by the American Dental Association, Royal College of Dentists of Canada, and the Royal Australasian College of Dental Surgeons. Oral and Maxillofacial Surgery requires 4-6 years of further formal University training after dental school (DDS,BDent,DMD, or BDS). Four-year residency programs grant a certificate of specialty training in Oral and Maxillofacial Surgery. Six-year residency programs grant the specialty certificate in addition to a medical degree (MD,MBBS,MBChB, etc). Specialists in this field are designated registrable U.S. “Board Eligible” and warrant exclusive titles. Approximately 50% of the training programs in the U.S., 100% of the programs in Australia and New Zealand, and 20% of Canadian training programs, are dual-degree leading to dual certification in Oral and Maxillofacial Surgery and medicine (MD,MBBS,MBChB, etc).

The typical training program for an Oral and Maxillofacial Surgeon is:

  • 4 Years Undergraduate Study (BA, BSc, or equivalent)
  • 4 Years Dental Study (DMD,BDent,DDS, or BDS)
  • 4 - 6 Years Residency Training (additional time for acquiring medical degree)
  • After completion of surgical training most undertake final specialty examinations: (U.S. "Board Certified (ABOMS)"), (Australia/NZ: "FRACDS(OMS)"), or (Canada: "FRCD(C)(OMS)").
  • Many dually qualified oral and maxillofacial surgeons are now also obtaining Fellowships with the American College of Surgeons (FACS)
  • Average total length after Secondary School: 12 - 14 Years

In addition, graduates of Oral and Maxillofacial Surgery training programs can pursue fellowships, typically 1 - 2 years in length, in the following areas:

  • Head and neck cancer - microvascular reconstruction
  • Cosmetic facial surgery (facelift, rhinoplasty, etc.)
  • Craniofacial surgery/Pediatric Maxillofacial surgery (cleft lip and palate repair, surgery for craniosynostosis, etc.)
  • Cranio-maxillofacial trauma (soft tissue and skeletal injuries to the face, head and neck)

Europe

In the European Union, Craniomaxillofacial surgery (e.g. United Kingdom: Maxillofacial Surgery ("Maxfacs"/"Maxfax") ), is a specialty recognized and regulated by the General Medical Council as a medical specialty requiring both medical and dental degrees and culminating in the qualification FRCS(OMFS).

The typical training program for a Maxillofacial Surgeon:

  • 5 Years for the primary dental degree (BDS or BChD)
  • Foundation study
  • Completion of MFDS
  • 4 Years medical study (MBBS or MBChB)
  • Completion of MRCS exams
  • 4 - 5 Years of Maxillofacial specialist Registrar training
  • After completion of surgical training you must pass the exit examination culminating in the qualification: FRCS(OMFS).
  • Average total length after Secondary School: 14 - 18 Years

Notable oral and maxillofacial surgeons

  • Luc Chikhani reconstructed Trevor Rees-Jones's face, which was literally flattened by the impact of the car crash that killed Diana, Princess of Wales.
  • Bernard Devauchelle a French oral and maxillofacial surgeon at Amiens University Hospital who in November 2005 successfully completed the first face transplant on Isabelle Dinoire.

Periodontology

Periodontology, or Periodontics, is the branch of dentistry which studies supporting structures of teeth, and diseases and conditions that affect them.

The supporting tissues are known as the periodontium, which includes the gingiva (gums), alveolar bone, cementum, and the periodontal ligament. The word comes from the Greek words peri meaning around and odons meaning tooth. Literally taken, it means study of that which is "around the tooth".


Periodontal disease

Periodontal diseases take on many different forms, but are usually a result of a coalescence of bacterial plaque biofilm accumulation of the gingiva and teeth, combined with host immuno-inflammatory mechanisms and other risk factors which lead to destruction of the supporting bone around natural teeth. Untreated, these diseases lead to alveolar bone loss and tooth loss, and to date continue to be the leading cause of tooth loss in adults.


Periodontists

A Periodontist is a dentist who specializes in the diagnosis and surgical and non-surgical treatment of diseases and conditions of the periodontium. Periodontists are experts in the management of patients with periodontal diseases including all forms of gingivitis, periodontitis and gingival recession, as well as the surgical placement and long-term maintenance of dental implants.


United States

Periodontics is one of the nine American Dental Association recognized specialties of dentistry. The American Academy of Periodontology is the recognized governing academy for periodontics in the USA.

According to the American Academy of Periodontology website: "A periodontist is a dentist who specializes in the prevention, diagnosis and treatment of periodontal diseases, and the placement and maintenance of dental implants."

Periodontists (USA) must complete a 4 year undergraduate college degree, then graduate from an accredited dental school (DDS or DMD degree), and then complete 3 years of additional formal training beyond dental school in an accredited periodontology residency training program. The focus of periodontics residency training is on surgical and non-surgical management of periodontal diseases, all phases of dental implant surgery including advanced site development procedures, and management of long-term dental implant biologic complications.

Periodontists may also earn Board Certification by the American Board of Periodontology' after completion of an American Dental Association accredited residency training program in Periodontics. Board certified periodontists are awarded the title "Diplomate of the American Board of Periodontology".


India (Bharat)

Periodontics is offered as specialisation field in dentistry programme in India.This is offered at Master of Dental Surgery ( M.D.S ) course conducted by dental colleges affiliated to different universities in India.The minimum qualification required for M.D.S is Bachelor of Dental Surgery ( B.D.S ). Dental council of India is regulating body for dentists in India.


United Kingdom

The British Society of Periodontology exists to promote the art and science of periodontology. Their membership includes specialist practitioners, periodontists, general dentists, consultants and trainees in restorative dentistry, clinical academics, dental hygienists and therapists, specialist trainees in periodontology, and many others.

Pediatrics


Pediatrics
(also spelled paediatrics in the United Kingdom and Commonwealth) is the branch of medicine that deals with the medical care of infants, children, and adolescents. The upper age limit ranges from age 14 to 18, depending on the country.

A medical practitioner who specializes in this area is known as a pediatrician (also spelled paediatrician).

The word pediatrics and its cognates mean healer of children; they derive from two Greek words: παῖς (pais = child) and ιατρός (iatros = doctor or healer).

Pediatric polysomnography patient
Children's Hospital (Saint Louis), 2006


Differences between adult and pediatric medicine

Pediatrics differs from adult medicine in many respects. The obvious body size differences are paralleled by maturational changes. The smaller body of an infant or neonate is substantially different physiologically from that of an adult. Congenital defects, genetic variance, and developmental issues are of greater concern to pediatricians than they often are to adult physicians. Childhood is the period of greatest growth, development and maturation of the various organ systems in the body. Years of training and experience (above and beyond basic medical training) goes into recognizing the difference between normal variants and what is actually pathological.

Treating a child is not like treating a miniature adult. A major difference between pediatrics and adult medicine is that children are minors and, in most jurisdictions, cannot make decisions for themselves. The issues of guardianship, privacy, legal responsibility and informed consent must always be considered in every pediatric procedure. In a sense, pediatricians often have to treat the parents and sometimes, the family, rather than just the child. Adolescents are in their own legal class, having rights to their own health care decisions in certain circumstances only, though this is in legal flux and varies by region.


History of pediatrics

In the 9th century, the famous Persian physician Rhazes (Muhammad ibn Zakarīya Rāzi) wrote The Diseases of Children, the first book to deal with pediatrics as an independent field of medicine. For this reason, some medical historians consider him the father of pediatrics. His teacher Ali ibn Sahl Rabban al-Tabari was also a pioneer in the field of child development, which he earlier discussed in his Firdous al-Hikmah. The first work on pediatrics in the Western world was the Book of Children, written circa 1530 by Thomas Phaer, who was inspired by the works of Rhazes and Avicenna.

Pediatrics as a separate area of medical practice in the Western world largely began in the nineteenth century The Hospital for Sick Children, Great Ormond Street (London) was founded in 1852, and is probably the oldest such children's hospital in the English-speaking world. Great Ormond Street is adjacent to Coram's Fields, the site of the much earlier Foundling Hospital. The emigrant German physician, Abraham Jacobi, worked in the same period and is often considered the father of pediatrics.


Training of pediatricians

The training of pediatricians varies considerably across the world.

Like other medical practitioners, pediatricians begin their training with an entry-level medical education: a tertiary-level course, undertaken at a medical school attached to a university. Such a course leads to a medical degree.

Depending on jurisdiction and university, a medical degree course may be either undergraduate-entry or graduate-entry. The former commonly takes five or six years, and has been usual in the Commonwealth. Entrants to graduate-entry courses (as in the USA), usually lasting four or five years, have previously completed a three- or four-year university degree, commonly but by no means always in sciences. Medical graduates hold a degree specific to the country and university in and from which they graduated. This degree qualifies that medical practitioner to become licensed or registered under the laws of that particular country, and sometimes of several countries, subject to requirements for "internship" or "conditional registration".

Within the United States, the term physician also describes holders of the Doctor of Osteopathic medicine (D.O.) degree. For further information on osteopathic medicine, see the entry on the comparison of MD and DO in the US.

Pediatricians must undertake further training in their chosen field. This may take from three to six or more years, depending on jurisdiction and the degree of specialization. The post-graduate training for a primary care physician, including primary care pediatricians, is generally not as lengthy as for a hospital-basedmedical specialist.

In most jurisdictions, entry-level degrees are common to all branches of the medical profession, but in some jurisdictions, specialization in pediatrics may begin before completion of this degree. In some jurisdictions, pediatric training is begun immediately following completion of entry-level training. In other jurisdictions, junior medical doctors must undertake generalist (unstreamed) training for a number of years before commencing pediatric (or any other) specialization. Specialist training is often largely under the control of pediatric organizations (see below) rather than universities, with varying degrees of government input, depending on jurisdiction.


"Pediatrician" versus "Paediatrician"

A slight semantic difference has developed in association with the difference in spelling. In the USA, a pediatrician (US spelling) is a specialist physician who generally functions in a primary care setting for children. Like all physicians, they first receive a general medical degree (from a US medical school, typically MD or DO). Next, such pediatricians (US spelling) complete an internship in pediatrics and then 2 additional years of residency in pediatrics. A similar situation exists in Germany: a Kinderarzt is commonly a primary care pediatrician.

In the UK and many other parts of the world, a paediatrician is also a specialist physician for children, but generally not in primary care. He or she sees children who are either urgently taken to a hospital or who are referred by general practitioners; the latter see the bulk of child patients in primary care. Such paediatricians (British spelling) generally first receive a general medical degree, typically MB BS, MB BChir etc, and then complete at least 2 years' general clinical training ("foundation training"), followed by 6 or more years' additional training in paediatrics or its subspecialties.


Subspecialists in pediatrics

Specialist pediatricians may undergo further training in sub-specialties. Practicing a subspecialty in pediatrics is similar in some respects to practising the relevant adult specialty, but a major difference is in the pattern of disease. Typically, diseases commonly seen in children are rare in adults (eg bronchiolitis, rotavirus infection), and those seen in adults are rare in children (eg coronary artery disease, deep vein thrombosis). Hence, pediatric cardiologists deal with the heart conditions of children, particularly congenital heart defects, and pediatric oncologists most often treat types of cancer that are relatively common in children (eg certain leukemias, lymphomas and sarcomas), but which are rarely seen in adults. Every subspecialty of adult medicine exists in pediatrics (with the obvious exception of geriatrics).

Adolescent medicine is a growing sub-specialty. The pattern of diseases in adolescents in part resembles that seen in older adults, and specialists or sub-specialists in adolescent medicine are also drawn from practitioners of internal medicine or family medicine. Another major sub-specialty, which is unique to pediatrics, is neonatology: the medical care of newborn babies.


Pediatric organizations

Most pediatricians are members of a national body. Examples are the American Academy of Pediatrics, the Canadian Paediatric Society, the Royal College Of Paediatrics and Child Health, Norsk barnelegeforening (The Norwegian society of pediatricians) or the Indian Academy of Pediatrics. In Australia and New Zealand, paediatricians are fellows of the Royal Australasian College of Physicians, which covers both nations and which has adult & paediatric sections. This was the situation in the UK until the late 1990s, where specialist pediatricians were Members Fellows of either the Royal College of Physicians or of the fraternal colleges in Scotland. In 1996, British paediatricians were granted a royal charter to form their own college, the Royal College of Paediatrics and Child Health.CNS Ayurveda Chikitsalayam - World's first ISO Certified Ayurveda Pediatric Hospital.


Social role of pediatric specialists

Like other medical practitioners, pediatricians are traditionally considered to be members of a learned profession, because of the extensive training requirements, and also because of the occupation's special ethical and legal duties.

Pediatricians commonly enjoy high social status, often combined with expectations of a high and stable income and job security. However, medical practitioners in general often work long and inflexible hours, with shifts at unsociable times, and may earn less than other professionals whose education is of comparable length. Neonatologists or general pediatricians in hospital practice are often on call at unsociable times for perinatal problems in particular — such as for Cesarean section or other high risk births, and for the care of ill newborn infants.

In August 2000, during a "name and shame" campaign by Rupert Murdoch's News of the World, a paediatrician in Wales had her home and car vandalised by "vigilantes", who believed "paediatrician" meant "paedophile".

Prosthodontics

Prosthodontics is one of nine specialties recognized by the American Dental Association, Royal College of Dentists of Canada, and Royal Australasian College of Dental Surgeons.

According to the American Dental Association definitions of recognized dental specialities, prosthodontics is the dental specialty pertaining to the diagnosis, treatment planning, rehabilitation and maintenance of the oral function, comfort, appearance and health of patients with clinical conditions associated with missing or deficient teeth and/or oral and maxillofacial tissues using biocompatible substitutes.

A prosthodontist is a dentist who specializes in prosthodontics, the specialty of implant, esthetic and reconstructive dentistry. Prosthodontists restore oral function through prostheses and restorations (i.e., complete dentures, crowns, implant retained/supported restorations). Cosmetic dentistry, implants and temporomandibular joint disorder all fall under the field of prosthodontics.

In the United States there are only about 3,200 prosthodontists.


Training

The American College of Prosthodontists (ACP) ensures standards are maintained in the field. Becoming a prosthodontist requires an additional thirty-six months of postgraduate specialty training after obtaining a DDS (Doctor of Dental Surgery) or DMD (Doctor of Dental Medicine) degree. Training consists of rigorous preparation in basic science, head and neck anatomy, biomedical sciences, biomaterial science, esthetics, occlusion (bite), and TMD (Temporomandibular joint disorder). Due to this extensive training, prosthodontists are frequently called upon to treat complex cosmetic cases, full mouth reconstructions, TMJ related disorders, congenital disorders, and sleep apnea by planning and fabricating various prostheses.


Certification

Board certification is awarded through the American Board of Prosthodontics (ABP) and requires successful completion of the Part I written examination and Part 2, 3 and 4 oral examinations. This is a very rigorous process and so far there are no more than 800 diplomates. The written and one oral examination may be taken during the 3rd year of speciality training and the remaining two oral examinations taken following completion of speciality training. Board eligibility starts when an application is approved by the ABP and lasts for six years. Diplomates of the ABP are ethically required to have a practice limited to prosthodontics. Fellows of the American College of Prosthodontists (FACP) are required to have a dental degree, have completed three years of prosthodontic speciality training and be board certified by the ABP.


Maxillofacial Prosthodontics

Maxillofacial prosthodontics is a subspecialty of prosthodontics. Maxillofacial prosthodontists treat patients who have acquired and congenital defects of the head and neck (maxillofacial) region due to surgery, trauma, and/or birth defects. Artificial eyes (see Ocularist, Ocular prosthetic, ears, and maxillary obturators are commonly planned and fabricated by maxillofacial prosthodontists). Other less commonly employed prostheses include mouth devices used by amputees to aid in daily activities, tracheostomy obturators, and craniofacial prosthesis.

Treatment is multidisciplinary involving oral and maxillofacial surgeons, plastic surgeons, ENT surgeons, oncologists, speech therapists, occupational therapists, physiotherapists, and other healthcare professionals.

Certification requires an additional year of training after completing an approved prosthodontic speciality program. Eligibility for membership in the American Academy of Maxillofacial Prosthetics (AAMP) includes specific requirements to become an affiliate, associate, and honorary fellow.



Orthodontics

Orthodontics is a 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. The word comes from the Greek words ortho meaning straight and odons meaning tooth.

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 orthopedics".

Orthodontic treatment can be carried out for purely aesthetic reasons with regards to improving the general appearance of patients' teeth. However, there are Orthodontists, who work on reconstructing the entire face, rather than focusing exclusively on teeth. Nonetheless, treatment is most often prescribed for practical reasons such as providing the patient with a functionally improved bite (occlusion).

Dr. Edward H. Angle was the first orthodontist—the first dentist to limit his practice to orthodontics only. He is considered the "Father of Modern Orthodontics."


Methods

If the main goal of the treatment is the dental displacement, most commonly a fixed multibracket therapy is used. In this case orthodontic wires are inserted into dental braces, which can be made from stainless steel or a more aesthetic ceramic material.

Dental braces, with a powerchain, removed after completion of treatment.

Also removable appliances, or "plates", headgear, expansion appliances, and many other devices can be used to move teeth. Functional and orthopaedics appliances are used in growing patients (age 5 to 14) with the aim to modify the jaw dimensions and relationship if these are altered. (See Prognathism.) This therapy is frequently followed by a fixed multibracket therapy to align the teeth and refine the occlusion.

Hawley retainers are the most common type of retainers. This picture shows retainers for the top and bottom of the mouth.

After a course of active orthodontic treatment, patients will often wear retainers, which will maintain the teeth in their improved position while the surrounding bone reforms around them. The retainers are generally worn full-time for a short period, perhaps 6 months to a year, and then worn periodically (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; thus there is no guarantee that teeth, orthodontically treated or otherwise, will stay aligned without retention. For this reason, many orthodontists recommend periodic retainer wear for many years (or indefinitely) after orthodontic treatment.

Appropriately trained doctors align the teeth with respect to the surrounding soft tissues, with or without movement of the underlying bones, which can be moved either through growth modification in children or jaw surgery (orthognathic surgery) in adults.

Headgear & J-hooks for connection into the patient's mouth.

Several appliances are utilized for growth modification; including functional appliances, Headgear and Facemasks.

These "orthopedic appliances" may influence the development of an adolescent's profile and give an improved aesthetic and functional result.


Conditions

The most common condition that the methods of orthodontics are used for is correcting anteroposterior discrepancies. Another common situation leading to orthodontic treatment is crowding of the teeth.

Anteroposterior discrepancies

Anteroposterior discrepancies are deviations between the teeth of the upper and lower jaw in the anteroposterior direction. For instance, the top teeth can be too far forward relative to the lower teeth ("increased overjet".) The headgear is attached to the braces via metal hooks or a facebow and is anchored from the back of the head or neck with straps or a head-cap. Elastic bands are typically then used to apply pressure to the bow or hooks. Its purpose is to slow-down or stop the upper jaw from growing, hence preventing or correcting an overjet. For more details and photographs, see Orthodontic headgear.

Orthodontic treatment of crowded teeth; the canine is being pulled down into proper position with highly flexible co-axial wire. This patient also presents with a cross bite, where the upper molar is more lingual (towards the tongue) than the opposing lower molar.

Crowding of teeth

Another common situation leading to orthodontic treatment is crowding of the teeth. In this situation, there is insufficient room for the normal complement of adult teeth, which may require tooth removal in order to make enough room for the remaining teeth.


Diagnosis and treatment planning

In diagnosis and treatment planning, the orthodontist must (1) recognize the various characteristics of malocclusion and dentofacial deformity; (2) define the nature of the problem, including the etiology if possible; and (3) design a treatment strategy based on the specific needs and desires of the individual. (4) present the treatment strategy to the patient in such a way that the patient fully understands the ramifications of his/her decision.

Training

Various countries have their own systems for training and registering specialist orthodontists; generally a period of full-time post-graduate study is required for a dentist to qualify as an orthodontist. The orthodontic specialty is the earliest dental specialty.

Europe

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 recognized specialist.

United States, Canada, Australia, and New Zealand

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 and clinical work in the clinical and theoretical aspects of orthodontics. Generally, admission is based on an application process followed by an extensive interviewing process by the institution, in order to select the best candidate. Candidates usually have to contact the individual school directly for the application process.

India

In India, many dental colleges affiliated to universities offer orthodontics as specialisation in Master of Dental Surgery ( M.D.S ) programme.The M.D.S course is of two years duration. 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. The Indian Orthodontic Society is the torch-bearer of issues pertaining to Orthodontics in India and was established in 1965. More details of its history can be obtained from www.iosweb.net


Endodontics

If decay progresses to the first stage, a small filling will be required. If decay develops to the third stage depicted, root canal therapy will be required.

Endodontics, from the Greek endo (inside) and odons (tooth), is a one of the nine specialties of dentistry recognized by the American Dental Association, and deals with the tooth pulp and the tissues surrounding the root of a tooth. If the pulp (containing nerves, arterioles and venules as well as lymphatic tissue and fibrous tissue) has become diseased or injured, endodontic treatment is required to save the tooth.

Endodontists are dentists who have specialized in this field; qualification as an endodontist typically requires an additional 2-3 years of training following dental school. Many endodontic residents do original research and earn a Master's degree as well as a speciality certificate. They specialize and limit their practice to root canal therapy and root canal surgery, and use their special training and experience in treating difficult cases, such as teeth with narrow or blocked canals, or unusual anatomy. Endodontists may use advanced technology, such as operating microscopes, ultrasonics and digital imaging to perform these special services. Patients requiring root canal therapy are either referred by their general dentists to the endodontist or are self referred. Root canal therapy is also a standard procedure performed by general dentists.

The most common procedure performed in endodontics is root canal therapy. Other procedures practiced in endodontics include incision for drainage, internal tooth bleaching to fix teeth that have blackened because of infiltration of decayed soft tissue into the dentin in the teeth - most often seen in incisors that have been injured through a sudden impact, and periradicular surgery (apicoectomy); the more radical treatments generally are needed in cases of abscesses, root fractures, and problematic tooth anatomy, but may be indicated in treating teeth that have persistent root end pathosis following root canal treatment.