Assessment of two techniques for the recording of mandibular central relationship: gothic arch versus power centric relation

Resumen

The search for the true mandibular position with respect to theglenoid fossa and the relationship of the other components whichconstitute the temporomandibular joint known as centric relation(CR) are essential factors for its diagnosis, treatment and stability.The aim of the present study was to assess two techniques used forrecording CR: power centric technique and gothic arch technique,with the purpose of determining the most effective method toconfer greater accuracy to the recording. This was triggered bythe fact that in our institution some inconsistencies had beendetected when taking records of patients affl icted with considerables keletal discrepancies or malformations. Fifteen healthy skeletal class II patients were assessed. Patients’ ages ranged from 13to 17 years. Eight patients were female (53.4%) and seven male(46.6%). Using both techniques, thirty mountings were performedin a semi-adjustable articulator, condylar changes were monitoredusing axial condylar position indicator (API). Results revealed no significant differences, nevertheless, observed transversal, verticaland saggital changes were greater with the gothic arch technique.