Maxillary arch perimeter prediction using Ramanujan's equation for the ellipse.

@article{Chung2015MaxillaryAP,
  title={Maxillary arch perimeter prediction using Ramanujan's equation for the ellipse.},
  author={David Chung and Richard Wolfgramm},
  journal={American journal of orthodontics and dentofacial orthopedics : official publication of the American Association of Orthodontists, its constituent societies, and the American Board of Orthodontics},
  year={2015},
  volume={147 2},
  pages={
          235-41
        }
}
INTRODUCTION The prediction of arch perimeter gained when expanding the arch or proclining the anterior incisors is particularly important in the decision of tooth extraction vs nonextraction therapy for orthodontic treatment. METHODS Correlation of the measured perimeter of the maxillary dental arch and the calculated perimeter applying Ramanujan's equation for the perimeter of an ellipse was evaluated with 30 diagnostic casts of untreated maxillary dental arches. Both linear and… CONTINUE READING
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