What is y axis in Cephalometrics?
Y-axis: sella nasion/sella gnathion; SpP: spina nasalis posterior/spina nasalis anterior; Wits: distance A point perpendicular to the occlusal plane/B point perpendicular to the occlusal plane; MP: mandibular plane; A: A-point; B: B-point. Source publication.
Why cephalometric analysis is the preferred tool in the diagnosis and treatment of malocclusion?
Cephalometric radiography is an essential tool in the diagnosis and treatment of dental malocclusions and underlying skeletal discrepancies. The use of serial cephalometric radiographs makes it possible to study and predict growth, orthodontic treatment progress and surgical outcome of dentofacial deformity treatment.
What are cephalometric radiographs used for?
A cephalometric X-ray uses a specially adapted film holder mounted on a mechanical arm to capture images of your entire oral structure, including the nasal and sinus passageways to providing a comprehensive view of your jaw, mouth and head.
What does Bolton analysis assess?
The Bolton Analysis or Ratio is an analysis of the teeth which was developed by Wayne A. Bolton. It is used to determine the difference in size between the maxillary and mandibular teeth. This analysis helps in determining the ideal relationship within the interarch.
How is Bolton calculated?
The overall Bolton ratio is the percentage obtained by summing the widths of the 12 mandibular teeth divided by the sum of the widths of the 12 maxillary teeth and should be 91.3 ± 0.26 per cent.
What is cephalometric radiographic method and why it is used by orthodontists?
A cephalometric radiograph is a radiograph of the head which is taken in a Cephalometer. The Cephalostat is a head-holding device which was introduced in 1931 by Holly Broadbent Sr. The Cephalometer is used to obtain standardized craniofacial images which are available on radiographic films.