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Assessment of influence of LED curing units used on microhardness of resin-modi...
Marques,Joyce Figueiredo de Lima; Ferraz,Laura Nobre; Lopes,Beatriz Kelly Barros; Vasconcelos,Tamires Aparecida Borges; Teixeira,Thiely RobertsAim Resin modified glass ionomer (RMGI) is class of material that can be used as sealant for preventing and arresting the progression of caries in pits and fissures. As these are hybrid materials, their properties can be affected by factors related to the polymerization process. Therefore, this study aimed to evaluate the influence of different generations of LED curing units (Elipar DeepCure-L and VALO Grand) ...
Influence of cigarette smoke combined with different toothpastes on enamel erosion
Ferraz,Laura Nobre; Pini,Núbia Inocêncya Pavesi; Ambrosano,Gláucia Maria Bovi; Aguiar,Flávio Henrique Baggio; Lima,Débora Alves Nunes LeiteAbstract: This in vitro study aimed to evaluate the effect of different toothpastes on dental enamel subjected to an erosive cycle with and without exposure to cigarette smoke. Bovine enamel specimens were randomly allocated into 12 groups (n = 12). For the in vitro simulation of smoking, half the groups underwent an exposure cycle of 20 cigarettes per day for 5 days. Subsequently, all groups were subjected to ...
In situ assessment of the saliva effect on enamel morphology after microabrasio...
Pini,Núbia Inocencya Pavesi; Lima,Débora Alves Nunes Leite; Sundfeld,Renato Herman; Ambrosano,Gláucia Maria Bovi; Aguiar,Flávio Henrique BaggioAIM: This study evaluated saliva effects on enamel morphology surface after microabrasion technique. METHODS: Enamel blocks (16 mm2) obtained from bovine incisors were divided into 9 groups as follows: one control group (no treatment), four groups with microabrasion treatment using 35% phosphoric acid and pumice (H3PO4+Pum) and other four groups treated with 6.6% hydrochloric acid and silica (HCl+Sil). One grou...
Impact of light-curing time and aging on dentin bond strength of methacrylate- ...
Catelan,Anderson; Soares,Giulliana Panfiglio; Bedran-Russo,Ana Karina; Lima,Débora Alves Nunes Leite; Marchi,Giselle MariaAIM: To evaluate the impact of different light-curing times on dentin microtensile bond strength of two restorative systems after 24 h and 6 months of water storage. METHODS: Standardized Class II preparations were performed in 56 freshly-extracted human molars (n = 7), restored with methacrylate- or silorane-based restorative systems, and light-cured using a light-emitting diode at 1390 mW/cm2 by the recommend...
Effects of mouthwashes on Knoop hardness and surface roughness of dental compos...
Miranda,Diogo de Azevedo; Bertoldo,Carlos Eduardo dos Santos; Aguiar,Flávio Henrique Baggio; Lima,Débora Alves Nunes Leite; Lovadino,José RobertoThe aim of this in vitro study was to evaluate the effect of different mouthwashes on superficial roughness and Knoop hardness of two resin composites. Eighty specimens (6 mm Ø and 2 mm height) were prepared and divided into eight experimental groups (n = 10) according to the resin composites (4 Seasons and Esthet X), and storage solutions (G1 - Distilled water; G2 - Colgate Plax Overnight; G3 - Colgate Plax Al...
In vitro assessment of the effectiveness of whitening dentifrices for the remov...
Lima,Débora Alves Nunes Leite; Silva,André Luís Faria e; Aguiar,Flávio Henrique Baggio; Liporoni,Priscila Christiane Suzy; Munin,EgbertoThis in vitro study evaluated the effectiveness of whitening dentifrices for the removal of extrinsic tooth stains. Twenty dental blocks (4 x 4 mm), including enamel and dentine, removed from freshly extracted bovine incisors, were randomly divided into 4 groups: G1 - distilled water, G2 - Colgate, G3 - Crest Extra Whitening and G4 - Rapid White. In all specimens, the dentin was covered with colorless nail poli...
Effect of light curing modes and ethanol immersion media on the susceptibility ...
Aguiar,Flávio Henrique Baggio; Oliveira,Thalita Regina Vieira e; Lima,Débora Alves Nunes Leite; Paulillo,Luis Alexandre Maffei SartiniThe aim of this in vitro study was to evaluate the susceptibility of a hybrid composite resin (Filtek Z250 - 3M ESPE) to staining, when light cured in four different modes and immersed in two different media. Composite resin specimens were randomly prepared and polymerized according to the experimental groups (conventional - 550 mW/cm² / 30 seconds; soft start - 300mW/cm² / 10 seconds + 550 mW/cm² / 20 seconds;...
Effect of light curing tip distance and resin shade on microhardness of a hybri...
Aguiar,Flávio Henrique Baggio; Lazzari,Carolina Rodrigues; Lima,Débora Alves Nunes Leite; Ambrosano,Glaucia Maria Bovi; Lovadino,José RobertoResin composite shades and resin composite polymerization performed with a distanced light tip are factors that can affect polymerization effectiveness. Thisin vitro study aimed to evaluate the influence of curing tip distance and resin shade on the microhardness of a hybrid resin composite (Z250 - 3M ESPE). Forty-five resin composite specimens were randomly prepared and divided into nine experimental groups (n...