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3 results on '"Kaye Varaschin Theodorovicz"'

1. Impact of chitosan-incorporated toothpaste on roughness, gloss, and antifungal potential of acrylic resin

Author

Kaye Varaschin Theodorovicz, Waldemir Franscisco Vieira-Junior, Raissa Manoel Garcia, Ludmila Pini Simões Gobbi, Mariana Mayume Mori, Benedito Prado Dias Filho, Débora Alves Nunes Leite Lima, Daniel Sundfeld, and Núbia Inocencya Pavesi Pini

Subjects
Medicine, Science
Abstract

Abstract This study aimed to test the efficacy of different silica-based toothpastes with or without chitosan, as a method of cleaning the acrylic surfaces of denture prostheses. Acrylic resin specimens were prepared to evaluate surface roughness and gloss (n = 10), and Candida albicans adhesion/inhibition (n = 2). Two toothpastes with different degrees of abrasiveness were used: Colgate (CT) and Elmex (EX), with or without 0.5% chitosan (Ch) microparticles (CTCh or EXCh, respectively). The negative control was brushed with distilled water. Brushing was simulated with a machine. Surface roughness and gloss were analyzed before and after brushing. Candida albicans incidence/inhibition was tested qualitatively to determine the acrylic resin antifungal activity. The roughness and gloss data were analyzed with a generalized linear model, and the Kruskal Wallis and Dunn tests, respectively (α = 5%). Brushing with toothpastes increased roughness and reduced gloss, compared with the negative control (p

Published
2023
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2. Glass Fiber Post lengths and adhesive strategies to restore extensively damaged canines

Author

Oscar João Klüppel Neto, Kaye Varaschin Theodorovicz, Aline Akemi Mori, Gabriela Cristina Santin, Fernanda Ferruzzi Lima, Rafael Rocha Pacheco, Daniel Sundfeld, and Núbia Inocêncya Pavesi Pini

Subjects
Fatigue fracture, Fratura por fadiga, Cura Dupla de Cimentos Resinários, Técnica de Perno Muñón, Técnica para Retentor Intrarradicular, Flexural strength, Fractura por fatiga, Curación Dual de Cementos de Resinas, Resistencia Flexional, General Earth and Planetary Sciences, Resistência à Flexão, General Environmental Science, Post and Core Technique, Dental bonding, dual-cure
Abstract

The aim of this study was to evaluate different post lengths and adhesive strategies for restoring extensively damaged canines. Sixty human canines were randomly distributed into two groups (n=30), according to the resin cement used: self-adhesive or conventional. Each group was further distributed into 3 groups (n=10) based on the intracanal post lengths: 5, 7.5 and 10 mm. The radicular portion was endodontically filled, the cervical third was enlarged to simulate extensive damage and the coronal portion was reconstructed with composite resin. The samples were prepared with a simulated periodontal ligament and submitted to fatigue loading (160N – 1,200,000 cycles), followed by fracture resistance testing. The results were submitted to two-way ANOVA and Tukey tests (α=5%). The assessed glass fiber post lengths have not influenced on the fracture resistance (p>0.05). However, the performance of the conventional cements was better than the self-adhesive cements when the same post length was compared (p

Published
2022

3. LEVANTAMENTO DA PREVALÊNCIA DE RAIZ SUPRANUMERÁRIA EM CANINOS MANDIBULARES

Author

Antonio Adilson Soares de Lima and Kaye Varaschin Theodorovicz

Abstract

Os dentes podem apresentar raízes acessórias ou supranumerárias. Esta anomalia pode estar relacionada a trauma, pressão ou doença metabólica que afete a bainha epitelial de Hertwig. Raízes supranumerárias podem ser completamente desenvolvidas em tamanho e forma ou pequenas e rudimentares. Muitas vezes, elas estão fusionadas a outras raízes, ou ainda podem ser bífidas e amplamente separadas. A presença de raízes supranumerárias é estabelecida por meio do exame radiográfico. Este estudo determinou a prevalência de raízes supranumerárias em caninos mandibulares numa população adulta jovem com relação ao sexo e a sua localização. Quatrocentos e vinte e oito levantamentos periapicais foram avaliados em ambiente escurecido, sobre negatoscópio e com uso de uma máscara para evitar o excesso de luminosidade. Os resultados revelaram que a prevalência de raízes supranumerárias foi de 11 casos (2,57%) naquela população. Em relação ao sexo, a prevalência desta anomalia foi de oito casos em mulheres (72,72%) e três em homens (27,27%). Quanto a localização, quatro casos foram bilaterais (36,36%) sendo todos em indivíduos do sexo feminino e sete casos unilaterais (5 no dente 43 e 2 no dente 33). Este estudo revelou que ocorrência de raízes supranumerárias em caninos é baixa e afeta mais no sexo feminino.

Published
2011
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