Replanted teeth stored in a newly developed powdered coconut water formula.

BACKGROUND/AIM: A newly developed powdered coconut water formulae (ACP-404) has been proposed to preserve periodontal ligament cell viability. The aim of this study was to investigate the periodontal healing of dog teeth replanted after storage in ACP-404 with 2 different osmolalities. MATERIALS AND METHODS: Sixty teeth of 10 adult beagle dogs were extracted and randomly subjected to the following protocols: immediate replantation after extraction (positive control); dry conditions (negative control); and storage in ACP-404 I (G1), ACP-404 II (G2), in coconut water long shelf life (G3) or in pH-neutralized coconut water long shelf life (G4) for 50 minutes before replantation. The animals were euthanized 28 days post-operatively and processed for histomorphometric analysis using an optical microscope. The groups were subjected to histomorphometric analysis compared with immediate replantation and dry conditions. The data were statistically analysed using the Kruskal-Wallis test with post-analysis using Dunnett's test. RESULTS: The normal periodontal area was significantly higher for the G1 than for the G2 and G3 groups (P < .001). The positive control group presented similar normal periodontal areas compared to the experimental groups, except for the G3 and negative control groups (P < .001). G1 presented the lowest level of external root replacement resorption compared to the other groups (P < .05). All storage solutions had similar periodontal conditions for repaired resorption areas, inflammatory root resorption, ankylosis and replacement resorption (P > .05). CONCLUSIONS: ACP-404 I (G1) was better overall and was able to preserve the normal periodontium and had less external root replacement resorption.

Indução a muda forçada em Galinhas D’Angola (Numida meleagris) através do óxido de zinco / Induced molt in Guinea fowls (Numida meleagris) through the use of zinc oxide

Devido à escassez de estudos sobre muda forçada em aves alternativas de produção, este experimento teve o objetivo de realizar a muda forçada em galinhas D’Angola avaliando as perdas de peso corpóreo (PPC) que promovessem os melhores índices produtivos pós-muda. Com este propósito foram utilizadas 110 galinhas D’angola alojadas individualmente em gaiolas de poedeiras comerciais e, posteriormente, submetidas à muda forçada com 20000 ppm de óxido de zinco na ração. Estas passaram 21 dias recebendo ração e água ad libitum. Para análise da PPC relacionada à produtividade pós-muda foram utilizados 60 aves organizadas nos seguintes grupos: 24% (n=18); 26% (n=18); 28% (n=12) e acima de 30% (n=12). As outras 50 aves foram sacrificadas para o estudo do aparelho reprodutor, onde se verificou o tamanho e peso do oviduto e peso do ovário com PPC de 0% e sua regressão à medida que atingiam os níveis de PPC: 24%; 26%; 28% e acima de 30%. A média de retorno produtivo foi 60%, sendo o grupo com PPC de 24% com o melhor índice (100%), no entanto, este apresentou índice de produção insatisfatório juntamente com o grupo de PPC acima de 30%. A muda forçada em Galinhas D’Angola foi viável com índices de PPC em torno de 26% a 28% e inviáveis com níveis abaixo de 24% e acima de 30%. Em relação à regressão do aparelho reprodutor, os melhores resultados produtivos foram em torno de 65,15%, 90,49% e 94,27% para tamanho e peso do oviduto e peso do ovário, respectivamente.

Due to scarcity of studies on forced molt in alternative production birds, this experiment had the objective of performing an induced molt in Guinea Fowls observing the best body weight losses (BWL) that could promote good post-molt productions. With this purpose, 110 Guinea fowls were housed in individual commercial cages and were submitted to induced molt through the addition of zinc oxide in feed with the concentration of 20000 ppm during 21 days and received drinking water ad libitum. In the analysis of BWL related to post-molt productivity, 60 birds were organized in the groups, according to the percentage of BWL: 24% (n=18), 26% (n=18), 28% (n=12) and more than 30% (n=12). The other 50 birds were sacrificed for analyses of the reproductive organs, in which the oviduct size and weight of oviduct and ovary were measured with 0% of BWL and since then the regression of these organs were calculated to 24%, 26%,28% and more than 30% of BWL. The medium of post-molt return to production was 60% and the group of 24% of BWL presented the best productive return (100%), however this group presented an insufficient production rate as the birds with 30% of BWL. In this way, the induced molt in Guinea fowls was viable with BWL around 26 and 28% and unviable with less than 24% or more than 30%. In relation to regression of the reproductive organs the best productive results were 65,15%,90,49% and 94,27% to oviduct size and weight and ovary weight, respectively.