Morphologic analysis of the "spina mentalis" in adult mandibles of Brazilian whites and negroes.
Rev Bras Pesqui Med Biol
; 10(6): 357-60, 1977 Dec.
Article
em En
| MEDLINE
| ID: mdl-609772
This study was carried out to verify the morphology of the spina mentalis. We observed 275 human adult mandibles of both sexes and ethnic groups. An analysis of the results allows the following conclusions: 1. The spina mentalis exists in 90.04% +/- 1.8 of the mandibles of Whites and Negroes; 2. The typical form with four tubercles, as described by some authors, is rarely found; 3. In most cases it characterized by the presence of two upper tubercles (27.27% +/- 7.2); two superior tubercles and one inferior (24.72% +/- 6.7), and one elongated median tubercle (24.0% +/- 6.6); 4. The forms and volumes of the tubercles are very irregular and seem not to depend on age, sex or ethnic group; 5. The spina was absent in 9.8% +/- 3.2 of the cases, especially in mandibles of White teethless individuals; 6. An hypertrophic spina mentalis, generally formed at the expenses of the upper tubercle, is observed in only 1.45% +/- 0.5 of the cases.
Buscar no Google
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Mandíbula
Limite:
Female
/
Humans
/
Male
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
Rev Bras Pesqui Med Biol
Ano de publicação:
1977
Tipo de documento:
Article
País de publicação:
Brasil