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Rapid palatal expansion (RPE) or Rapid Maxillary Expansion (RME) is an expansion technique where expansion of 0.5 mm to 1 mm is achieved each day until the posterior crossbite is relieved. The expander works by turning a key inside the center of the expander. The turn of this key will push the arms of the expander.
Orthodontic expansion was first described by Emersen Angell in the 1860s. Kole in 1959 was the first person to speak about the procedure of corticotomy in adults with maxillary constriction. [1]
Common types of MARPE include MSE (maxillary skeletal expansion), and DOME (distraction osteogenesis maxillary expansion). MARPE appliances anchor to the palatal vault area of the maxilla using 4-6 mini-screws (or TADs) which allows for expansion in adults as well as prevents tipping as is common in tooth-borne expanders.
Mini-implant assisted rapid palatal expansion (MARPE) has been recently developed as a minimally invasive option for the transverse expansion of the maxilla in adults. [22] This method increases the volume of the nasal cavity and nasopharynx, leading to increased airflow and reduced respiratory arousals during sleep. [23]
Emerson fitted this patient with an appliance in his maxillary arch and gave patients instructions to turn the screw every day. Emerson claimed that expansion was achieved in 2 weeks by separation of maxilla along the Midpalatal suture. Dr. Angell faced much criticism from people in the field of dentistry at that point. [5]
In vertebrates, the maxilla (pl.: maxillae / m æ k ˈ s ɪ l iː /) [2] is the upper fixed (not fixed in Neopterygii) bone of the jaw formed from the fusion of two maxillary bones. In humans, the upper jaw includes the hard palate in the front of the mouth. [3] [4] The two maxillary bones are fused at the intermaxillary suture, forming the ...
A palatal lift prosthesis is a prosthesis that addresses a condition referred to as palatopharyngeal incompetence.Palatopharyngeal incompetence broadly refers to a muscular inability to sufficiently close the port between the nasopharynx and oropharynx during speech and/or swallowing.
Activator appliance was initially indicated in patient's who are growing. Therefore, young adolescents with growth potential showed the best results of this appliance. In addition, an adolescent or adult patient with retrognathic mandible, well aligned maxillary and mandibular dentition were also other indications of this appliance.