Postharvest UV-C irradiation stimulates the non-enzymatic and enzymatic antioxidant system of 'Isabel' hybrid grapes (Vitis labrusca×Vitis vinifera L.).

Ultraviolet light type C (UV-C) was studied as a tool to increase enzymatic and non-enzymatic antioxidant defenses and phytochemical levels in 'Isabel' grapes (Vitis labrusca×Vitis vinifera L.). Grapes were exposed to 0, 0.5, 1.0, 2.0, or 4.0kJm-2 UV-C and stored for 1, 3, or 5days post-treatment. One day after UV-C irradiation, the activities of grape antioxidant enzymes and thiols were increased, especially at 1.0 and 2.0kJm-2. These doses increased total phenolic content by almost 20%, while 0.5 and 4.0kJm-2 had no effects. Total monomeric anthocyanin content was increased by >35% by UV-C at 1.0kJm-2; however, anthocyanin profile was unchanged. Grape skin antioxidant capacity was also improved by UV-C irradiation. The 1.0kJm-2 UV-C was considered the hormetic dose. Postharvest UV-C had an elicitor effect on 'Isabel' grapes, positively impacting the antioxidant capacity and phytochemical content.

Reconstrução anterior em resina composta associada a pino de fibra de vidro: relato de caso / Anterior tooth reconstruction with composite resin and fiber reinforced aesthetic pin: case report

A estética é uma preocupação do ser humano, tendo o sorriso nesse contexto um papel fundamental. O uso da faceta em resina composta está indicado para casos de grande perda de estrutura dentária vestibular. O objetivo deste trabalho é apresentar a confecção de faceta direta em resina composta no dente incisivo central superior direito (11) de um paciente com prejuízo estético e funcional. O trabalho salienta desde a urgência até a manutenção de saúde bucal, passando pelas fases de limpeza, cimentação do pino e construção da restauração, proporcionado por um tratamento integrado de diferentes especialidades.

Aesthetics are a concern of human beings with the smile in this context a crucial role. The use of facet composite resin is indicated for cases of severe loss of tooth structure entrance. The objective of this paper is to present the making of facet direct composite resin in upper right central incisor (11) of a patient with disfigurement and functional. The paper stresses the urgency since to maintaining oral health, through the stages of cleaning, cementing the pin and construction of restoration provided by an integrated treatment of different specialties.

Divergência de diagnóstico entre hígido, selamento biológico e cárie oclusal em esmalte ou esmalte e dentina, realizado por acadêmicos e cirurgiões-dentistas / Divergence between diagnostic healthy, biological sealing and occlusal caries in enamel or enamel and dentin, carried out by academics and dental professionals

Este trabalho se propôs analisar a divergência de diagnóstico e comparar os métodos de diagnóstico clínico e clínico associado ao radiográfico da cárie na região oclusal, em 15 dentes posteriores humanos, realizados por 07 cirurgiões dentistas e 14 acadêmicos de Odontologia. Os dentes foram montados em blocos de cera, radiografados de forma padronizada e submetidos à avaliação clínica e radiográfica da superfície oclusal, afirmando ou rejeitando a presença de cárie e sua extensão. Posteriormente, os dentes foram seccionados ao meio, no sentido mésio-distal, e então, analisados em macroscopia óptica para validação da presença de cárie e sua extensão, quando presente. A análise dos dados, utilizando o teste de Student- Newmam-Keuls através do pacote estatístico SPSS 8.0™, demonstrou não haver diferença estatística entre os métodos utilizados, sendo que o exame radiográfico pouco contribuiu para a detecção de cárie oclusal. O índice de acerto, tanto para profissionais, quanto para acadêmicos foi maior no exame clínico que o radiográfico e as divergências de diagnósticos foram razoáveis.

This study proposed to analyze the difference and compare the diagnostic methods and clinical diagnosis associated with radiographic caries on the occlusal surfaces of 15 human posterior teeth, performed by 07 dentists and 14 dental students. The teeth were mounted in wax blocks, radiographed in a standardized manner and underwent clinical and radiographic evaluation of the occlusal surface, affirming or rejecting the presence of caries and its extension. Subsequently the teeth were bisected in the mesiodistal direction, and then analyzed to validate the macroscopic optical caries and its extension when present. The data analysis by test student-Neuwman-Keuls showed no statistical difference between the methods used when radiographic examination contributed little to the detection of occlusal caries. The hit rate for both professionals and for academics was higher in the clinical examination and radiographic diagnoses of divergence were reasonable.