Dental and Temporomandibular Joint Pathology of the Steller Sea Lion (Eumetopias jubatus).
J Comp Pathol
; 199: 23-36, 2022 Nov.
Article
em En
| MEDLINE
| ID: mdl-36265217
ABSTRACT
Skulls from 112 Steller sea lions (Eumetopias jubatus) were examined according to predefined criteria. Of the specimens, 73 (65.2%) were from males, 29 (25.9%) from females and 10 (8.9%) were of unknown sex, with 50 adults (44.6%), 61 young adults (54.5%) and one of unknown age (0.9%). The number of teeth evaluated was 3,521. Adults had more acquired tooth loss than young adults (P <0.0001). A total of 1,660 teeth (47.1%) from 111 specimens (99.1%) had evidence of attrition or abrasion. Adults displayed more attrition or abrasion than young adults (P <0.0001). A total of 241 teeth (6.8%) from 47 specimens (42%) had tooth fractures. Adults had more fractured teeth than young adults (P <0.0001). Bony changes consistent with periodontitis affected 36.7% of teeth. Adults had more teeth affected by periodontitis than young adults (P <0.0001). Temporomandibular joint osteoarthritis lesions were found in 54 specimens (48.2%) with more in adults than in young adults (P <0.0001). Although the significance of our findings is unknown, the occurrence and severity of these lesions may play an important role in the morbidity and mortality of Steller sea lions.
Palavras-chave
Texto completo:
1
Bases de dados:
MEDLINE
Assunto principal:
Periodontite
/
Dente
/
Transtornos da Articulação Temporomandibular
/
Leões-Marinhos
Limite:
Animals
Idioma:
En
Revista:
J Comp Pathol
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Estados Unidos