Comparison of reproducibility of natural head position using two methods.

摘要: Lateral cephalometric radiographs have become virtuallyindispensable to orthodontists in the treatment of patients. Theyare important orthodontic growth analysis, diagnosis,treatment planning, monitoring therapy and evaluation finaltreatment outcome.Aim: The purpose this study was evaluate comparethe maximum reproducibility with minimum variation naturalhead position using two methods, i.e. mirror method andthe fluid level device method.Materials methods: included sets of40 lateral cephalograms taken methods obtainingnatural head position: (1) (2) leveldevice method, a time interval 2 months.Inclusion criteria� Subjects were randomly selected aged between 18 to26 yearsExclusion History treatment� Any history respiratory tract problem or chronic mouthbreathing� congenital deformity� traumatically-induced myofacial pain syndrome� previous neck surgery.Results: result showed that both for position-the devicemethod comparable, but wasmore as shown by Dahlberg�scoefficient Bland-Altman plot. variance wasseen Precisionand Pearson correlation.Conclusion: used obtaining natural werecomparable without any significance, more reproducible less whencompared position.Clinical significance: Fluid morereproducible shows when compared mirrormethod position.