Abstract:
In this research was conducted by means of cephalometric study in order to
determine the dental and skeletal effects of a group of 22 patients with malocclusion
Class II division 1 treated with elastic open activator Klammt with a mean age of 9, 71
years at the beginning and 11,30 at the end of treatment, which were compared to a
control group of 25 subjects not undergoing orthodontic treatment and matched
chronologically to the experimental group. For each individual of both groups
corresponded to two cephalograms start and end of each period evaluated. The
treatment effects were identified by using 25 linear and angular cephalometric
variables. Cephalometric variables were measured and analyzed statistically. The "t"
Student test was used to compare the differences between the changes observed in
the experimental group and control group in both periods. The results showed that
the device Klammt not promote changes in jaw development. Promoted an increase
in the effective length and body of the mandible. The maxillomandibular relationship
improved significantly in the treated groups compared to controls. The dentoalveolar
changes showed greater retrusion in the maxillary incisors and greater lingual
inclination for the experimental group. The lower incisors showed greater buccal
inclination and protrusion in the experimental group. In dental relationship, the
experimental group showed greater correction of overjet, and molar relationship. The
experimental group showed no significance in relation to changes in the profile during
orthopedic treatment. The results demonstrate that the effects of activator Klammt
during this time were also dentoalveolar and skeletal.
