DEFINITIONS OF ORTHODONTICS 🔹MALOCCLUSION: Any deviation from normal occlusion.🔹MOMENT (of a force): The tendency of a force to cause rotation.🔹NANCE PALATAL ARCH: A maxillary fixed anchorage reinforcing appliance consisting of a wire soldered onto the first molar bands connected to an acrylic button contacting the anterior palatal surface.🔹NASOLABIAL ANGLE: The angle between a line drawn tangent to the columella of the nose and a line connecting subnasale to the mucocutaneous border of the upper lip.🔹NATURAL HEAD POSITION: A standardised reproducible head position used for dento-skeletal assessment.
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