3 documents found, page 1 of 1
Effectiveness of different carbamide peroxide concentrations used for tooth ble...
Meireles,Sônia Saeger; Fontes,Silvia Terra; Coimbra,Luiz Antônio Afonso; Bona,Álvaro Della; Demarco,Flávio FernandoOBJECTIVES: This in vitro study evaluated the effectiveness of three carbamide peroxide concentrations used for tooth bleaching treatments. MATERIAL AND METHODS: Sixty bovine dental slabs (6x6x3 mm) were obtained, sequentially polished, submitted to artificial staining (baseline) and randomized into four groups (n=15), according to the bleaching agent concentration: distilled water (control), 10% (CP10), 16% (C...
Color stability of a nanofill composite: effect of different immersion media
Fontes,Silvia Terra; Fernández,María Raquel; Moura,Claudia Modena de; Meireles,Sônia SaegerOBJECTIVE: The aim of this in vitro study was to evaluate the color stability of a nanofill composite resin (Filtek Z350) in different immersion media. MATERIALS AND METHODS: Twelve resin-based composite specimens were prepared using a silicon cylindrical mold measuring ≅1mm of thickness and ≅ 10mm of diameter. Specimens were light-cured for 40 s from both sides using a LED Radii at 1400 mW/cm² and were randomi...
A survey of oral and maxillofacial biopsies in children: a single-center retros...
Lima,Giana da Silveira; Fontes,Silvia Terra; Araújo,Lenita Maria Aver de; Etges,Adriana; Tarquinio,Sandra Beatriz Chaves; Gomes,Ana Paula NeutzlingDespite the large number of published cases about oral and maxillofacial pediatric lesions, the literature is scarce on epidemiological studies regarding the prevalence of these entities. This study retrieved oral and maxillofacial pediatric lesions from the Center of Diagnosis of Oral Diseases (CDDB) at the Dental School of the Federal University of Pelotas (UFPEL), comprising a 20-year period (1983-2002). Fro...