An evaluation of the twofold increase in articles using statistics over the past ten years, finding most of the increase in the use of inferential statistics.
A bone resorptive agent extracted from the tissues surrounding orthodontically-treated teeth is purified using ultrafiltration and isoelectric focusing. A two-fold increase in release of 45Ca could be achieved with as little as 0.6 pg/ml of this material.
Comparison of lateral cephalometric radiographs of treatment and control groups finds the changes achieved with a modified functional regulator are limited to improvement in dental and lip relations. No effects are found on mandibular growth or position in relation to the profile.
Measurement of crown width of the teeth from first molar to first molar in population samples from Northern Mexico and North Central United States finds only small differences that would be of little importance in orthodontic diagnosis.
An evaluation of seventeen measurements of incisor angulation and position for their applicability in describing the incisor relationship to maxilla and mandible. Most are better descriptors of other relationships that could confound interpretation of relationships to the supporting bones.