Portal de Periódicos da CAPES

The natural history of periodontal disease in man.

1978; Wiley; Volume: 13; Issue: 6 Linguagem: Inglês

10.1111/j.1600-0765.1978.tb00210.x

1600-0765

Harald Löe, Åge Ånerud, Hans Boysen, Martyn R. Smith,

Oral Health Pathology and Treatment

The meaterial presented in this report was derived from an longitudinal studt of the development and progress of periodontal disease and resultant tooth loss. The first population group was established in Oslo, Norway in 1969 and consisted of 565 male, non_dental students and academicians between 17 and 30+years. a nad second group was established in Sri Lanka in 1970 and consisted of 480 male tea loborers between the first and fourth examination was in Oslo 6 years and 3 months, in Sri Landka 7 years and 6 months. Each participant was scored for various disease parameters and the number of permanent teeth (third molars excluded) was recorded at each examination. The results show that in these randomly sampled groups no one was edentulous. The 17 year old Norwegian had 27.4 teeth present out of 28 possible and no major loss of teeth occurred during the twenties and thirties. As the participants approched 40 years of age, the mean number of teeth present was 27.1 and the mean mortality rate was 0.01 teeth per year. The Sri Lankan 15 year old had 27 teeth present and the 40 year old had 25.6 teeth. The mean mortality rate ranged between 0.1 and 0.3 teeth per year. Teeth with deep periodontal lesions started to exfoliated in Sri Lankans as they approached 40 years of age.