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Biomedical subjects

H P Hitchcock

Publications and source records attributed to H P Hitchcock.

18 recordsLinked to original sources
PubMed1983

The curve of Spee in Stone Age man.

The purpose of this research was to test Spee's predictions on a sample of skulls with well-worn occlusions. Thirty-nine Shell Mound Indian skulls with marked attrition of the teeth were x-rayed in the Margolis cephalostat. Following Spee's suggested landmarks, three curves were obtained which included the condyle. A fourth curve was investigated--not using the condyle but based from three landmarks of the occlusal surface. All curves, radii, and centers were generated by a computer using the landmarks digitized from each skull's film. When only the molars and the condyle were used, the length of the radius and the location of the center came closest to Spee's predictions. In most of the sample, however, Spee's inclusion of the incisor along that arc could not be verified. Prosthodontic experiments which might give clues to finishing curves for orthodontic patients are suggested.

Cephalometry↗
PubMed1980

Contributions of orthodontists to organized dentistry.

The first specialty board in dentistry has been celebrating its 50th anniversary. The need for the specialty and for presenting orthodontic diagnosis and classification at the undergraduate level remains. The orthodontic specialty has contributed an active source of leadership to all of dentistry and is proud to share in the common heritage of service to the public and in responsibility to the patient.

American Dental Association↗
PubMed1978

Cephalometric standards for American Negro children.

1. Our findings are comparable to the measurements of Drummond and Altemus. 2. Most skeletal measurements of the Alabama Negro are greater than those of Caucasians. 3. There is no difference between Caucasians and Negroes in the mean of the facial plane--SN angle. 4. The maxilla is proportionately more anteriorly placed than the mandible in the Negro. 5. The upper and lower incisors are more procumbent and protrusive in Negroes. 6. Standard deviations are about the same for whites and blacks, other than those for skeletal measurements. 7. Neither Angle's Class II nor Class III malocclusions occur as frequently in the black population as in the white population.

Adolescent↗
PubMed1976

The cephalometric distinction of class II, division 2 malocclusion.

Forty-two cases of Class II, Division 2 malocclusions were selected on the basis of Strang's first six steps. There were nineteen male and twenty-three female patients in the study. The average age was 12.5 years. These cases were compared with the normal sample of the Alabama Analysis. The Class II, Division 2 sample was compared to a sample of fifty-seven Class II, Division 1 cases. Means, standard deviations, and analyses of covariance, adjusted for age and sex, were derived. Illustrations show, numerically and graphically, the similarities and differences between Class II, Division 2 malocclusions and normal occlusions. Fig. 4 shows the comparison between the Class II, Division 1 and the Class II, Division 2 typical profiles.

Adolescent↗