Avaliação do sistema estomatognático e de sincrânios de lobo-guará (Chrysocyon brachyurus) em vida livre e cativeiro / Oral and skull evaluation of captive and wildlife maned wolves (Chrysocyon brachyurus)

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

The maned wolf, Chrysocyon brachyurus, is the largest wild canid inhabiting South America, specially areas with tall grass, fence and bush forest. They are omnivorous and their most important dietary components are small mammals, reptiles, insects, forage plants and fruits. There are few studies about oral diseases in free-ranging and captive maned wolves. The present study performed a survey about diseases of the stomatognatic system and skulls of free ranging and captive maned wolves, differences between both groups and determination of the physiological parameters and characteristics of the specie. Eighty specimens were evaluated (63 skulls and 17 living animals). The most frequent oral diseases included: teeth wearing (87,3%), and fracture (54,4%), periodontal disease (49,3%), teeth anomalies (49,3%), caries (11,4%). According to teeth anomalies, the presence of extra roots was significant, corresponding to 37,1% of the skulls. The upper first molar (46,7%) and the lower second molar (26,7%) were the most prevalent. Caries suggestive-lesions were observed in 18 teeth of nine maned wolves, and six of them were free-ranging animals. The severity and prevalence of periodontal disease were more pronounced in captive specimens, corresponding to 66,6% of this group and 47,3% of the free-ranging maned wolves. Osseous defects, both fenestration and dehiscence were present in 22,5% e 61,3% of the skulls, respectively. The majority of teeth fractures exposed the pulp chamber (84%), occuring mainly at the canines and incisors. In conclusion, the maned wolf has a dental formula and occlusal pattern similar to the domestic dog. Oral diseases are common in maned wolves. The prevalence of some injuries, as periodontal disease, presents differences between free-ranging and captive animals. Extra roots, alveolar osseous defects and other oral diseases need more studies to elucidate which factors are involved.

ASSUNTO(S)

stomatognathic system veterinary dentistry animais selvagens wild animals tooth canidae odontologia veterinária canidae sistema estomatognático dente

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