Since the currently available pH-cycling models do not differentiate anti-caries potential of dentifrices with low fluoride (F) concentration, two were developed and tested in present. Bovine enamel blocks subjected to treated F solutions containing from 70 280 mug F/mL order validate them terms dose-response effect. The also by evaluating Colgate Baby (500 F/g, as a dentifrice), Tandy (1,100 an active F-dentifrice) Crest positive control). Enamel mineral loss or gain was assessed surface...

Since the use of bovine instead human dentine to evaluate cariogenic and anticariogenic substances is not well established, this in situ study was conducted. Eleven volunteers wore palatal acrylic devices containing 4 slabs (2 2 bovine). Sucrose solution (20%) dripped over all times a day, simulating challenge. Dentifrice slurries, fluoridated or not, were specified 3 day caries reduction. After 14 days, biofilm formed on collected for microbiological analysis. In dentine, mineral loss (ΔZ)...

Clinical Relevance The 18-month retention rate of the two self-etch adhesives used in present study was similar to that etch-and-rinse from same manufacturer. However, quality enamel margins significantly better for adhesives. SUMMARY Statement Problem With Institutional Review Board approval, 39 patients who needed restoration noncarious cervical lesions (NCCLs) were enrolled this study. A total 125 NCCLs selected and randomly assigned four groups: 1) a three-step adhesive, Adper Scotchbond...

The relationship between stress, salivary flow rate and oral volatile sulfur‐containing compounds (VSCs) is not clearly established. Two stressful situations were studied: psychological stress caused by a biochemistry examination (Study I) psycho‐physiological premenstrual syndrome (PMS) II). Seventy‐one undergraduate dental students took part in Study I VSCs measured 1 wk before the examination, on day of after. In II, 50 women selected (23 with 27 without PMS) measurements made during...

This study tested the fluoride‐release rate and root caries inhibitory effect of dental adhesives. In phase 1, fluoride released from samples ( n = 5) adhesives A (Optibond Solo), B (One‐up Bond F), C (Prime & NT), D (Tenure Quick), also controls [+] (glass‐ionomer cement) [‐] (non‐fluoride releasing adhesive), was quantified on a daily basis during pH‐cycling, caries‐simulating phenomenon. 2, restorations were made in bovine dentine slabs 16) with same associated non‐fluoridated...

To evaluate fluoride and aluminum concentration in herbal, black, ready-to-drink, imported teas available Brazil considering the risks pose to oral general health, respectively.One-hundred seventy-seven samples of herbal black tea, 11 types tea 21 ready-to-drink were divided into four groups: I-herbal tea; II-Brazilian (Camellia sinensis); III-imported IV-ready-to-drink tea-based beverages. Fluoride analyzed using ion-selective electrode atomic absorption, respectively.Fluoride levels very...

Abstract Aim: This randomized clinical trial evaluated the effects of an essential oils‐containing mouthrinse for full‐mouth disinfection. Material and Methods: Fifty patients were assigned to receive disinfection with either oils or placebo. At baseline, 2 6 months treatment primary outcomes probing depth (PD), plaque index (PlI) modified gingival (MGI) monitored. Additional monitoring included bacterial presence (by polymerase chain reaction) in subgingival, saliva tongue samples; flows,...

This study evaluated the bone regeneration process in rabbit calvaria induced by three types of biomaterials: two xenogenous, consisting deproteinized bovine bone, while other was alloplastic, based on biphasic calcium phosphate. Five New Zealand white rabbits weighing between 2,900 and 3,500 g were submitted to four standard 8 mm-diameter perforations at parietal bone. Three filled with grafts biomaterials, them received Bio-Oss® Endobon® Xenograft Granules, consisted fully alloplastic...

PURPOSE: The aim of this study was to evaluate the influence periodontal disease on biochemical parameters saliva, including salivary flow rate, pH, total protein, alkaline phosphatase activity and urea concentration, in individuals with chronic periodontitis. METHODS: Forty subjects were allocated into two groups: twenty without (control group) periodontitis (test group). Plaque index (PI), gingival (GI), probing depth (PD) clinical attachment level (CAL) obtained by a previously trained...

Dentine substrates with different mineral contents and morphological patterns were created by submitting root slabs to the following treatments: (A) immersion in artificial saliva during experimental period (control), (B) demineralization for 32 h induce caries lesion (demineralized group), (C) followed remineralization 8 d (remineralized group). The longitudinally sectioned, content was determined cross-sectional microhardness, bond strength of an adhesive system/composite resin assessed...

Aim: To evaluate enamel microhardness and morphology after bleaching with hydrogen peroxide containing calcium in different concentrations. Methods: One hundred specimens of human teeth were ground polished had the initial evaluated. The randomly assigned into five groups (n=20): Group 1 - Control group (no treatment); 2 Home Peroxide 6% (without calcium); 3 7.5% 4 White Class (with 5 calcium). For each group, was performed according to manufacturer's specifications. bleached once a day for...

This study aimed to evaluate whether tooth enamel bleached with hydrogen peroxide (H2 O2 ) is more susceptible erosion when compared unbleached enamel; and the presence of calcium (Ca) in bleaching gel influenced this process.Enamel blocks were prepared from human molars, submitted surface microhardness analysis (baseline). Blocks randomly divided into four treatment groups (n = 20): G1 G2-bleached 7.5% H2 , without Ca, respectively; G3 G4-bleached 35% respectively. After bleaching, these an...

Since the efficacy of topical fluoride products is related to (F) availability and its reactivity with enamel, this study was conducted. The F concentration following materials verified: I- acidulated phosphate (APF) gel (1.23% F), II- APF foam F) III- Varnish (2.26% F). Forty blocks bovine enamel were divided into 4 groups treated according described, being one them used as control. Loosely bound (''CaF2'') determined on after extraction 1.0M KOH analyzed by ion-selective electrode. Total...

The aim of this study was to evaluate the influence previous exposure Cyclosporine A (CsA) on experimental periodontitis in rats. Forty rats were divided into 4 groups: Control (CON); (CsA), which received daily doses 10 mg/kg CsA; Ligature (LIG), an insertion a cotton ligature around mandibular 1st molar at day 30; and CsA (CsAL), treated with ligature. At 60 experiment, animals sacrificed, groups compared regards Alkaline Phosphatase (AP) activity, gingival overgrowth, periodontal bone...

Abstract Aim This study evaluated the surface roughness patterns of two resin-based composite restorative materials, a microhybrid (Filtek Z250, 3M ESPE) and nanofilled Supreme, ESPE), subjected to regimen that simulated dynamic pH-cycling toothbrushing. Methods Materials Twelve standardized cylindrical specimens each material were prepared, finished, mechanically polished. The experimental units submitted followed by 50,000 toothbrushing cycles, after which was measured using an atomic...

Considering extensive caries lesions, a variety of techniques are used for removal. However, there controversies in literature about the real need total removal this tissue, since inner portion dentin, affected by dental caries, is able to remineralize when suitable cavity sealing carried out. Since, promotes disruption metabolic circuit remaining microorganisms, preventing progression lesion, many studies have recommended partial carious tissue. Therefore, aim study was present scientific...