For statistical study on the tooth mortality in Korean, the author measured the tooth mortality, etiology in 3470 patients (male 1733, female 1737) of the total extraction cases 7347, 3277 were male and 4072 female, and ages ranged from 11 to 60 years over old.
The following results was obtained:
1. Central Incisor: tooth mortality was maxilla 21-30 years old in male, 51-60 years old in female and 61. years over in male and 51-60 years old in female of mandible.
2. Lateral Incisor: tooth mortality was maxilla 21-30 years old in male, 51-60 years old in female and 61 years over in male 51-60 years female of mandible.
3. Cuspid: tooth mortality was maxilla 61 years over in male, 51-60 years old in female and 61 years over in male, 51-60 years old in female of mandible.
4. First Biuspid: tooth mortality was maxilla 21-30 years old in male, 21-30 years old in female and 61 years over in male, 21-30 years old in female of mandible.
5. Second Bicuspid: tooth mortality was m,3xilla 41-50 years old in male, 31-40 years old in female, and 21-30 years old in male, 51-60 years old in female of mandible.
6. First Molar: tooth mortality was maxilla 31-40 years old in male, 51-60 years old in female and 21-30 years old in male, 21-30 years old in female of mandible.
7. Second Molar: tooth mortality was maxilla 41-50 years old in male, 41-50 years old in female and 31-40 years old in male, 21-30 years old in female of mandible.
8. Third Molar: tooth mortality was maxilla 21-30 years old in male, female and 21-30 years old in male, female of mandible.
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