Early and late electromyographic response to treatment with activators.

@article{Ahlgren1978EarlyAL,
  title={Early and late electromyographic response to treatment with activators.},
  author={Johan Ahlgren},
  journal={American journal of orthodontics},
  year={1978},
  volume={74 1},
  pages={88-93}
}
An EMG analysis of twenty Class II cases treated with activators shows that: 1. During daytime use of activators, the protractor muscles of the mandible are stimulated, while the retractors are inhibited. 2. During nightime use of activators, no functional stimulation can be recorded. The activator appears to be operated mainly by tissue stretching and the accompanying elastic rebound. 3. Before treatment, as well as after the treatment, Class II cases show a balanced EMG pattern during closure… CONTINUE READING