Morphology of the dentin structure of sloths Bradypus tridactylus: a light and scanning electron microscopy investigation.
Anat Histol Embryol
; 42(6): 410-4, 2013 Dec.
Article
em En
| MEDLINE
| ID: mdl-23410180
ABSTRACT
The aim of this study was to describe the dentine morphology of sloths (Bradypus tridactylus). The sloth teeth were removed and prepared for light microscopy (LM) and scanning electron microscopy analyses (SEM). LM revealed two patterns of tubular dentins an outer with dentinary tubules over the all tooth length and one in the inner part with larger diameter and more spaced tubules, when compared to those present in the outer dentine. These findings were confirmed by SEM, which revealed a tubular pattern in the outer dentine like in humans. The inner dentine displayed pared grouped tubules that were characterized as vascular channels. It can be concluded that this sloth species present two types of dentins an inner dentin (ortodentin) and an outer dentin characterized as a vascular dentin. This suggests a partial evolutive/adaptive process of this dental tissue, as compared to other mammalian species.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Bichos-Preguiça
/
Dente
/
Microscopia Eletrônica de Varredura
/
Dentina
Limite:
Animals
Idioma:
En
Revista:
Anat Histol Embryol
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
Brasil