H
Helena de Freitas Oliveira Paranhos
Researcher at University of São Paulo
Publications - 110
Citations - 2830
Helena de Freitas Oliveira Paranhos is an academic researcher from University of São Paulo. The author has contributed to research in topics: Dentures & Sodium hypochlorite. The author has an hindex of 29, co-authored 106 publications receiving 2398 citations.
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Journal ArticleDOI
Effects of mechanical and chemical methods on denture biofilm accumulation
Helena de Freitas Oliveira Paranhos,Cláudia Helena Silva-Lovato,Raphael Freitas de Souza,P. Cruz,Karina Maria Salvatore de Freitas,Amanda Peracini +5 more
TL;DR: It can be concluded that brushing alone was more effective than the chemical method employed, and the best results were obtained by a combination of methods.
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Effect of denture cleansers on physical properties of heat-polymerized acrylic resin
Amanda Peracini,Letícia Resende Davi,Nathália de Queiroz Ribeiro,Raphael Freitas de Souza,Cláudia Helena Lovato da Silva,Helena de Freitas Oliveira Paranhos +5 more
TL;DR: Although the color changes after the immersion in denture cleansers were clinically insignificant, the Corega Tabs group showed higher color differences and the Bony Plus group showed significantly increased surface roughness.
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Effect of three methods for cleaning dentures on biofilms formed in vitro on acrylic resin.
Helena de Freitas Oliveira Paranhos,Cláudia Helena Silva-Lovato,Raphael Freitas de Souza,P. Cruz,Karina M. de Freitas-Pontes,Evandro Watanabe,Izabel Yoko Ito +6 more
TL;DR: The three denture hygiene methods showed different effects depending on the type of microbial biofilms formed on acrylic base resin specimens, including chemical, mechanical, and combination methods.
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Behaviors and hygiene habits of complete denture wearers
Amanda Peracini,Ingrid Machado de Andrade,Helena de Freitas Oliveira Paranhos,Cláudia Helena Lovato da Silva,Raphael Freitas de Souza +4 more
TL;DR: It was concluded that the patients interviewed had limited knowledge about prosthetic hygiene and oral care, the method more used by patients was the mechanical method of brushing, most patients used the same complete dentures for more than 5 years and slept with the dentures.
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Color Stability, Surface Roughness and Flexural Strength of an Acrylic Resin Submitted to Simulated Overnight Immersion in Denture Cleansers
Helena de Freitas Oliveira Paranhos,Amanda Peracini,Marina Xavier Pisani,Viviane de Cássia Oliveira,Raphael Freitas de Souza,Cláudia Helena Silva-Lovato +5 more
TL;DR: Overnight immersion in denture cleansing solutions simulating a year and a half of use did not alter the flexural strength of acrylic resin but caused noticeable color alterations, higher for alkaline peroxide.