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Molar Distalization
Molar distalization is a process in the field of Orthodontics which is used to move molar teeth, especially permanent first molars, distally (backwards) in an arch. This procedure is often used in treatment of patients who have Class 2 malocclusion. The cause is often the result of loss of E space in an arch due to early loss of primary molar teeth and mesial (forward) migration of the molar teeth. Sometimes molars are distalized to make space for other impacted teeth, such as premolars or canines, in the mouth. Distalization in the maxillary arch is easier than the mandibular arch because maxillary bone has more trabecular bone than the mandible, which has higher percentage of cortical bone. One of the most popular devices that is used to distalize molars is known as Pendulum appliance and Pendex Appliance. These were developed by Hilgers in 1990. Eruption of second molar It has been reported in the literature that eruption stage of second molar has an impact on the distaliza ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orthodontics
Orthodontics is a dentistry specialty that addresses the diagnosis, prevention, management, and correction of mal-positioned teeth and jaws, and misaligned bite patterns. It may also address the modification of facial growth, known as dentofacial orthopedics. Abnormal alignment of the teeth and jaws is very common. Nearly 50% of the Developed country, developed world's population, according to the American Association of Orthodontics, has malocclusions severe enough to benefit from orthodontic treatment: although this figure decreases to less than 10% according to the same AAO statement when referring to medically necessary orthodontics. However, conclusive scientific evidence for the health benefits of orthodontic treatment is lacking, although patients with completed orthodontic treatment have reported a higher quality of life than that of untreated patients undergoing orthodontic treatment. Treatment may require several months to a few years, and entails using dental braces and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
First Molar
The molars or molar teeth are large, flat teeth at the back of the mouth. They are more developed in mammals. They are used primarily to grind food during chewing. The name ''molar'' derives from Latin, ''molaris dens'', meaning "millstone tooth", from ''mola'', millstone and ''dens'', tooth. Molars show a great deal of diversity in size and shape across mammal groups. The third molar of humans is sometimes vestigial. Human anatomy In humans, the molar teeth have either four or five cusps. Adult humans have 12 molars, in four groups of three at the back of the mouth. The third, rearmost molar in each group is called a wisdom tooth. It is the last tooth to appear, breaking through the front of the gum at about the age of 20, although this varies from individual to individual. Race can also affect the age at which this occurs, with statistical variations between groups. In some cases, it may not even erupt at all. The human mouth contains upper (maxillary) and lower (mandibul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malocclusion
In orthodontics, a malocclusion is a misalignment or incorrect relation between the teeth of the upper and lower dental arches when they approach each other as the jaws close. The English-language term dates from 1864; Edward Angle (1855-1930), the "father of modern orthodontics", popularised it. The word "malocclusion" derives from ''occlusion'', and refers to the manner in which opposing teeth meet ('' mal-'' + ''occlusion'' = "incorrect closure"). The malocclusion classification is based on the relationship of the mesiobuccal cusp of the maxillary first molar and the buccal groove of the mandibular first molar. If this molar relationship exists, then the teeth can align into normal occlusion. According to Angle, malocclusion is any deviation of the occlusion from the ideal. However, assessment for malocclusion should also take into account aesthetics and the impact on functionality. If these aspects are acceptable to the patient despite meeting the formal definiti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pendulum Appliance
Pendulum is an orthodontic Orthodontics is a dentistry specialty that addresses the diagnosis, prevention, management, and correction of mal-positioned teeth and jaws, and misaligned bite patterns. It may also address the modification of facial growth, known as dentofacial ... appliance, developed by James J. Hilgers in 1992, that use forces to distalize the upper 1st molars to create space for eruption of impacted teeth or allowing correction of Class 2 malocclusion. This appliance is a fixed type of distalizing appliance that does not depend on the compliance of each patient to work. Hilgers published an article in '' Journal of Clinical Orthodontics'' in 1992 describing the appliance. Management The initial design of the appliance used the occlusal rests which were bonded to the premolars for retention. However, premolars can also be banded for the retention purposes. Pre-activation of the appliance mandates bending of the TMA springs 90 degrees or parallel to the midline of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Norman William Kingsley
Norman William Kingsley (October 26, 1829 – February 20, 1913) was a dentist and an artist in the 19th century. He was a major contributor in the early development of orthodontic treatments and cleft palate therapy. He designed fixed and removable inclined planes to correct Angle Class II malocclusions. He also designed the first soft-rubber palatal obturators, which enabled patients with cleft palate to enjoy normal speech and function. He was the first person in 1880 to introduce the concept of "jumping the bite for patients with a retruded mandible". Childhood and education He was born in October 1829 in Stockholm, New York. During his childhood years, he migrated to different states such as Vermont and Pennsylvania in order for his father to find a job but ultimately coming back to upstate New York. He was the eldest of six children. At age of 15, he left school to work as a store clerk and a bookkeeper. He was eventually introduced to dentistry by his uncle, Albigence W. K ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albin Oppenheim
Albin Oppenheim (January 8, 1875 – November 20, 1945) was an American orthodontist who contributed significantly towards understanding in orthodontics about the biology of tooth movement. Life Oppenheim was born in Brno, Moravia, and received education in that part of Austria-Hungary. He went to Karl Ferdinand's University, Prague in 1899 to earn his Medical Degree. He then went to Berlin Dentalpoliclinic to earn his Dental Degree in 1904. He then practiced with Dr. Weiser in Vienna at his practice until 1914. During World War I, he served as head of Army Hospital and in 1915 was appointed Privatdozent on Head of Orthodontics Department at University of Vienna. In 1938, Oppenheim went to Geneva, Switzerland because of the political tensions of World War II. He moved to the US in 1939 after getting an appointment as a faculty at University of Southern California. His introduction to Edward Angle happened when he gave lectures at Angle School of Orthodontia Angle School of Or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Intrusion (orthodontics)
Intrusion is a movement in the field of orthodontics where a tooth is moved partially into the bone. Intrusion is done in orthodontics to correct an anterior deep bite or in some cases intrusion of the over-erupted posterior teeth with no opposing tooth. Intrusion can be done in many ways and consists of many different types. Intrusion, in orthodontic history, was initially defined as problematic in early 1900s and was known to cause periodontal effects such as root resorption and recession. However, in mid 1950s successful intrusion with light continuous forces was demonstrated. Charles J. Burstone defined intrusion to be "the apical movement of the geometric center of the root (centroid) in respect to the occlusal plane or plane based on the long axis of tooth". Types True Intrusion This type of intrusion consists of true intrusion of incisors without any extrusion of the posterior teeth. The incisors in the anterior teeth (depending on the arch) move towards the bone and no ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
