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| KINOSHITA,ANGELA; SULLASI,HENRY L.; ASFORA,VIVIANE K.; AZEVEDO,RENATA L.; GUZZO,PEDRO; GUIDON,NIEDE; FIGUEIREDO,ANA MARIA G.; KHOURY,HELEN; PESSIS,ANNE-MARIE; BAFFA,OSWALDO. |
| ABSTRACT This work reports the dating of a fossil human tooth and shell found at the archaeological site Toca do Enoque located in Serra das Confusões National Park (Piauí, Brazil). Many prehistoric paintings have been found at this site. An archaeological excavation unearthed three sepulchers with human skeletons and some shells. Two Brazilian laboratories, in Ribeirão Preto (USP) and Recife (UFPE), independently performed Electron Spin Resonance (ESR) measurements to date the tooth and the shell and obtain the equivalent dose received by each sample. The laboratories determined similar ages for the tooth and the shell (~4.8 kyBP). The results agreed with C-14 dating of the shell and other samples (charcoal) collected in the same sepulcher. Therefore,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dating; ESR; EPR; Shell; Tooth; Enamel.. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000300847 |
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| Yavuz,Izzet; Aydin,Haluk; Ulku,Refik; Kaya,Sadullah; Tumen,Caner. |
| This study investigates the feasibility of a different new approach to determining the microleakage volume associated with dental restorations (Class V cavity restorated with glass ionomer cement + high copper amalgam) and the relative marginal adaptation deficiency of dog, bovine and human permanent teeth in in vitro conditions. Also researched is the appropriateness of using dog and bovine teeth in in vitro studies rather than human teeth. Our method utilizes the molecular adsorption characteristics of methylene blue. Within the framework of this study, 60 permanent teeth (20 human, 20 dogs and 20 bovine) were used. These groups were evaluated statistically, of which indicated no statistically significant differences (p > 0.05). It was also concluded... |
| Tipo: Journal article |
Palavras-chave: Dye adsorption test; Microleakage; Tooth. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582006000100003 |
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| Deveci,S¸enay; Deveci,Engin. |
| Cadmium Chloride is a well known teratogen compared to other metals. Cadmium affects placental function, may cross the placental barrier and modify fetal development. In this study, 12 female wistar albino rats weighted between 180-200gr were used. They were divided into two groups as experimental and control groups each comprising 6 female animals. 2mg/kg/day cadmium chloride dissolved in 1ml isotonic solution were intravenously injected from tail vein of experimental rats during 17-21 days of pregnancy. At first day of birth, the total body weights of control and experimental newborn pups were taken. This study aims to evaluate morphologically the effects of cadmium chloride on the incisive teeth development of pups born to the cadmium-applied female... |
| Tipo: Journal article |
Palavras-chave: Cadmium; Tooth; Pregnancy. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000400023 |
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| Farah,Ghaus; Faruqi,N. A. |
| Foetal therapy has made foetal anatomy a promising field. Maxilla had been the core research attraction of many scientists. Alveolar arches, specially the maxillary one had been consistently the focus of attention for research workers due to its importance in dentistry. Twenty nine human foetuses were grouped into I (<24 weeks of IUL), II (25-30 weeks of IUL) and III (>30 weeks of IUL). Maxillae were dissected out and sockets were carefully cleaned. Sockets for the temporary molars, which also hold permanent premolars were measured with the help of Vernier callipers. Three parameters, i.e. maximum mesiodistal diameter,maximum transverse diameter and maximum depth were considered. Readings were analysed statistically by using Student's 't' test.... |
| Tipo: Journal article |
Palavras-chave: Morphometry; Foetus; Socket; Tooth; Deciduous. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022010000300044 |
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