Showing papers in "Quintessence international, dental digest in 1981"

Abused and misused--the alginate impression technique: a timely reminder.

Abstract: today, particularly with the emphasis being placed on functional aberrations and functional therapy. In the present investigation, different positions of the first cervical vertebra are associated with differences in craniofacial morphology. Two extremely different categories of malocclusion-mandibular prognathism and mandibular retrusion-have been selected by the author to demonstrate their relationship to the Atlas position. The relationship is explained by the head posture, which can be correlated with the specific type of anomaly. A broad survey of the literature, which has investigated the relationships between maxillofacial anomalies, the first cervical vertebra, and head posture is given to corroborate the thesis that Class II patients tip the head upward somewhat to compensate for the retruded lower jaw, whereas Class III patients tend to tip the head downward to reduce the apparent prognathism. Other factors, such as airway patency, are given as possible influences on head posture. T. M. Graber