Navegando por Assunto "Periodontite animal"

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Epidemiological, clinical and pathological aspects of an outbreak of periodontitis in sheep
(Universidade Federal do Pará, 2016-11) SILVA, Natália da Silva e; SILVEIRA, José Alcides Sarmento da; LIMA, Danillo Henrique da Silva; BOMJARDIM, Henrique dos Anjos; BRITO, Marilene de Farias; BORSANELLI, Ana Carolina; DUTRA, Iveraldo dos Santos; BARBOSA NETO, José Diomedes
The objective of this study was to describe the epidemiological, clinical and pathological aspects of an outbreak of periodontitis in sheep that occurred on a rural property in Benevides, in the state of Pará, Brazil. The first clinical signs of this disease in the herd - visible nodular swollen mandible - were observed about one month after the sheep began grazing on a recently renovated Panicum maximum cv. Massai pasture; the animals were also supplemented with elephant grass (Pennisetum purpureum). From the 545 adult Santa Ines, Dorper, Texel and crossbred sheep, 20 (3.7%) showed facial bulging, particularly of the mandible. These 20 sheep, which were generally over 36 months of age, had low body condition scores as well as dull and ruffled coats; many of them had loose or missing pre, upper or lower molars, showed the formation of abscesses and fistulas, exhibited pain upon palpation and had difficulty chewing. In the same herd, the prevalence of periodontal lesions at the premolars and molar teeth was evaluated via post-mortem examination of 39 young and 17 adult sheep. In 51.3% (20/39) of adolescents and in 100% of adults, periodontal lesions were found at least at one tooth of the dental arch, with unilateral or bilateral periodontal lesions at the maxillary and mandibular teeth. Histopathological analysis of 13 sheep revealed pyogranulomatous inflammation. The second and third maxillary premolars were the teeth that were most affected in young animals, whereas the third pre-molar and the molars, of the maxilla and mandible, were most often affected in adults. These lesions led to severe bone destruction, alterations in the dental arch, occlusion, tooth loss and periodontal abscesses. The epidemiological and clinic-pathological characteristics of this periodontitis outbreak, described here for the first time in sheep in Brazil, were similar to those for bovine periodontitis (“cara inchada”).
Acesso aberto (Open Access)
Periodontite em ovinos no estado do Pará: etiologia, aspectos epidemiologicos e clinico-patologicos
(Universidade Federal do Pará, 2015-01-29) SILVA, Natália da Silva e; BARBOSA NETO, José Diomedes; http://lattes.cnpq.br/1516707357889557
This paper describes the epidemiological, clinical, pathological and bacteriological the first periodontitis record in sheep in Brazil occurred in a rural property in the municipality of Benevides, Para. The outbreak occurred about a month after grazing in the area of Panicum maximum cv. Massai, which suffered agricultural practices, there was swelling in the jaw in a few animals, mostly those over the age of 36 months. The extraoral examination was performed in 545 sheep and there was swelling of the jaw in 3.7% of them. Clinical signs were low body score, rough hair coat and dull, some relaxation and loss of premolars and upper and lower molar teeth, abscess and fistula formation in the affected site, demonstration of pain on palpation and difficulty chewing. Between the 39 heads of young animals analyzed in the post-mortem examination, 51.3% had lesions somewhere and between the 38 analyzed after maceration, 73.7% also had injuries. 45% of the lesions from the 39 heads were in the maxilla, 15% in the mandible and 40% in both structures (maxilla and mandible) and from those heads with injuries observed after maceration 50% of the lesions were in the maxilla and 50% in the maxilla and mandible. Between the 17 heads of adult animals analyzed in the post-mortem examination and after maceration all had lesions somewhere. In the post-mortem examination, 11.8% had lesions in the mandible and 88.2% in both structures; after maceration, 5.9% were in the maxilla, 11.8% in the mandible and 82.3% in both structures. The histopathological findings revealed a chronic pyogranulomatous inflammatory process. To characterize the subgingival microbiota of the 14 sheep with periodontitis it was performed the Polymerase Chain Reaction (PCR), especially for microorganisms belonging to the red complex Socransky (Porphyromonas gingivalis, Tannerella forsythia and Treponema denticola) and other possible Gram-negative and Gram-positive periodontopathogens. There were identified in 50% of the samples Porphyromonas gingivalis, Tannerella forsythia in 92.8% and Treponema denticola in 78.5%. The three periodontal pathogens belonging to the red complex occurred simultaneously in 42.8% of the samples. We also identified in at least one of the examined animals Campylobacter rectus, Eikenella corrodens, Enterococcus faecium, Fusobacterium nucleatum, Prevotella intermedia, Prevotella nigrescens, and Prevotella loeschii. In the 14 samples Aggregatibacter actinomycetemcomitans, Dialister pneumosintes, Enterococcus faecalis and Porphyromonas gulae were not detected. The results showed that the sheep periodontitis occurred in the municipality of Benevides - PA has an infectious etiology and rushed a significant number of animals, many with bulging of the jaw; had high incidence in young and involved all of the adult animals post-mortem and after maceration examined.