Basal Divergence Increase in Braquifacial Orthodontic Treated Patients with and without Molar Distalization.

Lateral cephalograms on 59 patients (braquifacial pattern) where evaluated at two stages:

pre and post treatment. Record available from Orthodontic Department of the FOUBA.

 The sample was grouped as follows:

Group ND: n=36 patients non upper 1^st  molar distalization.

Group D: n=23 patients with upper 1^st molar distalization.

Results: “difference”: numerical difference value from pre and post cephalograms and ”improvement”: quantitative evaluation of the results as they approach the standard. Lower facial height increased 1.93°

+/-2.97 for GND and 1.75°+/-3.03 for GD; facial axis decreased – 0.57° +/-2.10 for GND and -0.79°+/-2.15 for GD; mandibular plane angle increased 0.59°+/- 2.83  for GND and 0.89°+/-2.67 for GD. The correlation between lower facial height and upper 1^st  molar distalization was r = 0.29. No statistical significant difference was found between variables.

Conclusions:Treatment increased the divergence between basal structures in braquifacial patients with and without molar distalization.Correlation between lower facial height and upper 1^st molar distalization was  r=0.29.Key words:Basal-braquifacial-molar distalization.

The authors wish to acknowledge the valuable advice of Dr Romulo Cabrini. Grant ”Prof. Rodolfo Erausquin”, FOUBA (res CD N°681/03)