Influência de iluminantes na percepção do brilho superficial de resina composta por diferentes observadores

• Autor(a) principal: Tessarin, Fernanda Bastos Pereira [UNESP]
• Data de Publicação: 2016
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://hdl.handle.net/11449/155502; http://www.athena.biblioteca.unesp.br/exlibris/bd/capelo/2017-05-16/000885045.pdf
• topic: Resinas compostas; Estética dentária; Materiais dentários

Objective: To evaluate the visual perception of observers (lay person, undergraduate students and dental professionals) on the surface gloss of resin composite, under different illuminants. Methods: Twelve cylindrical specimens (S), with 6 mm in diameter and 1 mm thickness, was fabricated in nanofilled resin composite (Filtek Z350) in color A2E. The polishing of S was performed for division into 6 groups, with surface gloss values at 10, 25, 40, 55, 70 or 85. The polishing protocol and gloss values for each group was determined by pilot tests. A gloss meter for flat and curved surfaces - NOVOCURVE (TM RHOPOINT, East Sussex, England) was assessed the surface gloss of specimens. Fifteen subjects from ICT - UNESP were selected, 5 lay people, 5 undergraduate students, and 5 dental professionals. They signed the written informed consent form for participation in the study. The participants observed each S in comparison with a standard in bovine enamel in a light box (MM-2e / UV Konica Minolta), under different illuminants (D65 - natural light, A - incandescent light, and F - fluorescent light). Each observer will performed 18 readings. Observer classified the degree of surface gloss according to S comparing to the standard, following the parameters: a - S presents less surface gloss than the standard, b- S presents similar surface gloss as the standard, and c - S presents greater surface gloss than the standard. Observations were also made in comparison between ES and in this case the comparison criteria were: 1 - the two specimens have the same brightness or not? 2 - If not, which has the highest brightness? The data....