Cross-sectional study of orthodontic treatment and missing of permanent teeth in two birth cohorts of Finnish students according to sex.

@article{Laine1982CrosssectionalSO,
  title={Cross-sectional study of orthodontic treatment and missing of permanent teeth in two birth cohorts of Finnish students according to sex.},
  author={T. Laine and Hannu Hausen},
  journal={Community dentistry and oral epidemiology},
  year={1982},
  volume={10 4},
  pages={
          209-13
        }
}
Undergraduate students (n = 451) at a Finnish university were studied. For analysis, the subjects were divided into two birth cohorts: those born before 1955, and those born in that year or later. Information about previous orthodontic appliance therapy was obtained from the students by using a structured questionnaire. Missing permanent teeth (second and third molars excluded) were recorded at a dental examination. Every 10th student had received orthodontic treatment; the proportion of… CONTINUE READING

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