Abstract
Head posture during sleep was recorded for seven young male adults. Extra-oral electrical sensors were used to detect cranial orientation and cheek-to-pillow contact. A radiographic-photographic technique was employed to assess symmetry of the subjects' palates and maxillary dental arches. Findings of this pilot study did not show a correlation between sleeping posture and symmetry of the mature maxillary arch. It is suggested that earlier hypotheses of a relationship between nocturnal posture and dental arch shape should be reinvestigated employing the more refined techniques currently available.
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