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An adolescence has an inter-maxillary growth space which allows the posterior molar eruption without any relapse in the later age when relative intrusion is performed in their orthodontic treatment. However, if relative intrusion is performed in adults who have a deep bite tendency with short anterior lower facial height, there is a higher ...
Man-Suk Baek and others evaluated long-term stability of anterior open bite by intrusion of maxillary posterior teeth. Their results showed that the molars were intruded by 2.39 mm during treatment and relapsed back by 0.45 mm or 22.8%. The incisal overbite increased by 5.56 mm during treatment and relapsed back by 1.20 mm or 17%.
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 . [ 1 ]
Several methods have been used to determine ITSD. Of these methods the one most commonly used is the Bolton analysis. Bolton developed a method to calculate the ratio between the mesiodistal width of maxillary and mandibular teeth and stated that a correct and harmonious occlusion is possible only with adequate proportionality of tooth sizes. [60]
Class 2 elastics are used from the lower first molar to the upper canine tooth. [1] They can be used for many different reasons, such as Class 2 malocclusions, to reinforce anchorage in a case where an extraction has been done, to allow the maxillary incisors to move backwards, and to correct midline deviation and allow buccal movement of ...
They also stated that the eruption of maxillary second molars had minimal effect on distalization of first molars. In addition, the reported increase of Lower Anterior Facial Height for patient's who had pre-existing vertical growth. They concluded that the pendulum appliance was an effective and reliable method for distalizing maxillary molars.
In the maxillary arch nerves for infiltration are branches of the superior alveolar, the greater palatine and the nasopalatine nerve Posterior superior alveolar nerve supplies the molars (not including the mesiobuccal root of the maxillary first molar), the surrounding bone, periodontal ligament, periosteum and buccal soft tissues
The creation of this interocclusal space will significantly reduce the amount of tooth preparation required, especially on the already compromised palatal surfaces of the maxillary anterior teeth. Adaptation occurs over a period of some months: compensatory eruption of the posterior teeth will occur, together with some intrusion of the anterior ...
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