期刊
AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS
卷 123, 期 4, 页码 451-454出版社
MOSBY, INC
DOI: 10.1067/mod.2003.71
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Sagittal (pitch) and transversal (roll) natural head position (NHP) was measured once in 20 subjects, 18 to 24 years of age, with an inclinometer; the measurements were repeated 2 years later. The method error (reproducibility) after 2 years was 1.1degrees for sagittal and transversal measurements. The mean change in NHP measurement was -0.3degrees for both measurements, and the variance was 1.21degrees (= 1.1(2)).
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