Publications by authors named "Marlon-Ferreira Dias"
This in vitro experimental investigation aimed to evaluate the impact of the combined application of a nanofiber scaffold (NS), a polymeric catalyst primer (PCP) containing 10 mg/mL of heme peroxidase enzyme, and violet LED (LEDv) on the esthetic efficacy (EE), trans-amelodentinal cytotoxicity (TC), and procedural duration of conventional in-office bleaching therapy. To achieve this, 96 standardized enamel/dentin discs were individually placed in artificial pulp chambers. A 35% hydrogen peroxide (HO) bleaching gel was administered for 45, 30, or 15 min to the enamel, either previously coated with NS + PCP or left uncoated, followed by irradiation with LEDv for 15 min or no irradiation.
View Article and Find Full Text PDFBackground: Failures in glass fiber post (GFP) retention may be associated with low adhesion achieved in root dentin.
Material And Methods: 55 single-rooted premolars were endodontically treated and distributed according to different adhesion strategies (n=11): G1: RelyX ARC (3M ESPE; etch-rinse strategy); G2: Relyx Ultimate (3M ESPE; etch-rinse strategy); G3: AllCem (FGM; etch-rinse strategy); G4: Relyx Ultimate (3M ESPE; self-etching strategy); G5: RelyX U200 (3M ESPE; self-adhesive strategy). For Bonding Strength (BS) analysis, the roots were sectioned in slices (1.
Gels with high concentrations of hydrogen peroxide (HO) have been associated with cytotoxicity and consequent post-bleaching tooth sensitivity. This study assessed the bleaching efficacy (BE) and cytotoxicity (CT) of bleaching gels with low concentrations of HO containing manganese oxide (MnO) and photocatalyzed with violet LED (LEDv). The following groups were established: G1: no treatment (negative control, NC); G2: 35% HO (positive control, PC); G3: LEDv; G4: 10% HO; G5: 6% HO; G6: 10% HO + MnO + LEDv; G7: 6% HO + MnO + LEDv.
View Article and Find Full Text PDFObjective: Evaluate the influence of a polymeric catalyst primer (PCP) on esthetic efficacy (EE), degradation kinetics of hydrogen peroxide (H O ), and trans-amelodentinal cytotoxicity (TC) of bleaching gels.
Materials And Methods: The following groups were established: G1: No treatment (NC, negative control); G2: PCP; G3: 10% H O ; G4: PCP + 10% H O ; G5: 20% H O ; G6: PCP + 20% H O ; G7: 35% H O (positive control); G8: PCP + 35% H O . To determine EE, enamel/dentin discs (E/DDs) were stained and subjected or not to bleaching protocols for 45 min.
Article Synopsis
- The study aimed to evaluate how a nanofiber scaffold and polymeric catalyst primer affect the effectiveness, degradation, and toxicity of bleaching gels when combined with violet-LED light.
- Ten different treatment groups were tested, including various concentrations of hydrogen peroxide and the addition of LED treatment, with enamel/dentin discs used for analysis.
- Results indicated that the combination of nanofiber scaffold, polymeric catalyst primer, and 10% hydrogen peroxide with LED light provided high esthetic effectiveness and the least toxicity to cells compared to other treatments.
Background: The color stability of the composite resin is an important property that influences its clinical longevity, which remains an inherent challenge to the material. Thus, the purpose of this study was to evaluate the color stability of bulk-fill resins when exposed to dye.
Material And Methods: Cavities were prepared in 80 bovine incisors, which were randomly assigned into 4 groups (n = 20) according with the resin composite used: P60 (Control Group - Filtek P60, 3M/ESPE), FP (Filtek Bulk-Fill Posterior, 3M/ESPE), SDR (SDR, Dentsply) and FF (Filtek Bulk Fill Flow, 3M/ESPE).
Background: Employing violet LED on tooth bleaching is a recent but promising technique. This study aimed to assess the bleaching effectiveness of violet light-emitting diodes (LEDs) associated or not with bleaching gels containing hydrogen peroxide (HP) or carbamide peroxide (CP).
Methods: seventy bovine incisors were randomly assigned into 7 groups (n = 10) according to the technique and whitening product used.
Article Synopsis
- The study examines how different polymerization methods affect the properties of composite resins used in dentistry, particularly their microhardness and strength.
- A total of 150 resin specimens were tested using three polymerization methods: light curing, photopolymerization with autoclave, and photopolymerization with microwave, across five different resin types.
- Results showed that light curing produced the highest microhardness values, while Brilliant Everglow resin consistently showed the lowest values, regardless of the polymerization method used.
Background: After dental bleaching procedures dentists commonly advise patients to reduce the consumption of beverages that may cause the teeth to stain, however, the effectiveness of teeth whitening may not be directly affected by diet.
Material And Methods: It was evaluated through in vitro study whether contact with dyes through in-office bleaching sessions with 35% hydrogen peroxide would influence the effectiveness of treatment. Sixty bovine incisors were randomly assigned into 5 groups (n = 12) according to contact frequency and type of dye solutions.