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Bjork defined posterior crossbite as a malocclusion where the buccal cusps of canine, premolar and molar of upper teeth occlude lingually to the buccal cusps of canine, premolar and molar of lower teeth. [7] Posterior crossbite is often correlated to a narrow maxilla and upper dental arch. A posterior crossbite can be unilateral, bilateral ...
However, this term has been incorrectly used for both buccal and labial, being also applied to the side of a tooth that is adjacent to (or the direction toward) the inside of the cheek (instead of the more accurate term, vestibular). [1] [3] [4] Gingival The direction toward the gingiva (gums), synonymous with cervical and similar to apical.
A false asymmetry arises due to occlusal interferences, which results in a lateral displacement of the mandible, producing a cross-bite in the anterior/buccal region. Elimination of the displacement will return the mandible to a centric position. On the other hand, a true asymmetry indicates unequal facial growth on the left or right side of ...
Displacement is defined as both of the contact areas of the tooth are displaced in the same direction from the ideal alignment position. [8] Score of 0 represents ideal alignment with no apparent deviation from the ideal arch line. Score of 1 represents minor malalignment: rotation of less than 45º and displacement of less than 1.5mm
The surrounding intraoral anatomical structures should be palpated to identify the presence of bone expansion or displacement of tooth roots as well as crepitus noises during examination, indicating extensive bone damage. Bulging of the buccal or lingual cortical plates [7] may be present. Age of occurrence in the patient, the location of the ...
Mandibular fracture, also known as fracture of the jaw, is a break through the mandibular bone.In about 60% of cases the break occurs in two places. [1] It may result in a decreased ability to fully open the mouth. [1]
The buccal space (also termed the buccinator space) is a fascial space of the head and neck (sometimes also termed fascial tissue spaces or tissue spaces). It is a potential space in the cheek, and is paired on each side. The buccal space is superficial to the buccinator muscle and deep to the platysma muscle and the skin.
Dental intrusion is an apical displacement of the tooth into the alveolar bone.This injury is accompanied by extensive damage to periodontal ligament, cementum, disruption of the neurovascular supply to the pulp, and communication or fracture of the alveolar socket.