An evaluation has been made of four techniques of assessing, from radiographs, the position of unerupted maxillary teeth, using radio-opaque markers placed in various positions on the maxilla of a dried skull. Application of the parallax principle in a vertical plane, for which only two radiographs are needed, was found to produce as many correct conclusions as other methods.
ArmitageP. (1977) Statistical methods in medical research, Blackwell Scientific Publications, Oxford.
2.
SouthallP. J. and GravelyJ. F. (1987) Radiographic localization of unerupted teeth in the anterior part of the maxilla: a survey of methods currently employed, British Journal of Orthodontics, 14, 235–242.
