Active compounds and derivatives of camellia sinensis responding to erosive attacks on dentin
Abstract This research explored the potential of Camellia sinensis-derived teas and active compounds to be used as treatments to prevent dentin wear. Human root dentin slabs were randomly assigned to 5 groups (n = 10) as follows: distilled water (DW, control), epigallocatechin-3-gallate (EGCG), theaflavin gallate derivatives (TF), commercial green tea (GT), and commercial black tea (BT). The samples were submitted to a pellicle formation and an erosive cycling model (5x/day, demineralization using 0.01 M hydrochloric acid/60 s) followed by remineralization (human stimulated saliva/60 min) for three days. The samples were t...
Source: Brazilian Oral Research - May 24, 2018 Category: Dentistry Source Type: research
Individuals with special needs and their families’ oral health-related quality of life
Abstract To evaluate the impact of dental caries among Brazilian individuals with special health care needs (SHCN) on their families ’ oral health-related quality of life (OHRQoL). A cross-sectional study was carried out with a population-based sample of 227 subjects who were enrolled from the ACOLHER-PNE project conducted at the Fluminense Federal University. Parents/caregivers answered the Brazilian version of the 14-item Family Impact Scale (B-FIS) to assess the impact on family's quality of life (QoL). The main independent variable was dental caries experience, diagnosed according to the World Health Organization (W...
Source: Brazilian Oral Research - May 24, 2018 Category: Dentistry Source Type: research
Duration of effectiveness of Botulinum toxin type A in excessive gingival display: a systematic review and meta-analysis
This study aimed to determine the duration of the effectiveness of botulinum toxin type A on a gummy smile. A systematic search was conducted using Medline (PubMed), Scopus, and Web of Science electronic databases, from 1970 to March 2017 with no language restriction; the search included studies evaluating adult patients with excessive gingival display who were treated with botulinum toxin and were followed-up for at least 3 months. OpenGrey and Clinical Trial Registry were also consulted. Quality assessment was applied to determine the level of evidence and bias, and a meta-analysis was performed. Of 2181 full texts, 71 w...
Source: Brazilian Oral Research - May 7, 2018 Category: Dentistry Source Type: research
Income trajectories affect treatment of dental caries from childhood to young adulthood: a birth cohort study
Abstract We aimed to analyze the effects of family income trajectories on the increase in dental caries from childhood to young adulthood. Data from the 1993 Pelotas (Brazil) birth cohort study, in which dental caries was measured at ages 6, 12, and 18 years, were analyzed. Family income of 302 participants was assessed at birth, and at 4, 11, 15, and 18 years of age. Mother's education, toothbrushing frequency, dental visiting, dental caries in primary dentition, and birth weight were covariates. A latent class growth analysis was conducted to characterize trajectories of time-varying variables. The influence of income tr...
Source: Brazilian Oral Research - May 7, 2018 Category: Dentistry Source Type: research
Can low-fusing glass application affect the marginal misfit and bond strength of Y-TZP crowns?
Abstract To evaluate the effect of different surface treatments on the marginal misfit and retentive strength between Y-TZP crowns and an epoxy resin. Forty (40) epoxy resin (G10) abutments (height: 5mm, conicity: 60, finish line: large chamfer) with equal dimensions were milled and included in polyurethane to simulate the periodontal ligament. Next, 40 Y-TZP crowns (thickness: 1mm) were milled (Cerec in Lab) and randomly divided into four groups (n=10) according to the surface treatment: GS(glaze spray), GP(glaze powder/liquid), P(zirconia primer) and RS(tribochemical silica coating). The conditioned surfaces were cemente...
Source: Brazilian Oral Research - May 7, 2018 Category: Dentistry Source Type: research
A systematic review and meta-analysis of the survival rate of implants placed in previously failed sites
Abstract The aim of this study was to conduct a systematic review and meta-analysis to assess the clinical outcomes of dental implants placed in previously early and late implant failed sites. An electronic literature search was conducted in several databases for articles published up to February 2018. Human clinical trials that received at least one implant in a previously failed site were included. Hence, the PICO question that was aimed to be addressed was: Do patients undergoing implant replacement (second and third attempts) in previous failed sites have survival rates similar to implants placed at first attempts? A r...
Source: Brazilian Oral Research - May 3, 2018 Category: Dentistry Source Type: research
Cross-cultural adaptation of the Brazilian version of the Dentine Hypersensitivity Experience Questionnaire (DHEQ-15)
This study provides evidence supporting the cross-cultural validity of the Brazilian version of DHEQ-15 for use in Brazil. (Source: Brazilian Oral Research)
Source: Brazilian Oral Research - May 3, 2018 Category: Dentistry Source Type: research
Influence of ethanol on dentin roughness, surface free energy, and interaction between AH Plus and root dentin
This study aimed to evaluate the influence of different ethanol concentrations on dentin roughness, surface free energy, and contact angle between AH Plus and the root canal dentin. One hundred human maxillary anterior teeth were split longitudinally and 200 dentin specimens were polished to make the surface flatter and smoother. An acrylic bar was positioned between two dentin specimens and impression material was added to create a block, simulating an instrumented root canal space. Specimens were removed from the mold and cleaned in an ultrasonic bath for 10 min. Thereafter, dentin specimens were divided into four groups...
Source: Brazilian Oral Research - May 3, 2018 Category: Dentistry Source Type: research
Effect of grinding and aging on subcritical crack growth of a Y-TZP ceramic
This study aimed to investigate slow crack growth (SCG) behavior of a zirconia ceramic after grinding and simulated aging with low-temperature degradation (LTD). Complementary analysis of hardness, surface topography, crystalline phase transformation, and roughness were also measured. Disc-shaped specimens (15 mm Ø × 1.2 mm thick, n = 42) of a full-contour Y-TZP ceramic (Zirlux FC, Amherst) were manufactured according to ISO:6872-2008, and then divided into: Ctrl – as-sintered condition; Ctrl LTD – as-sintered after aging in autoclave (134 °C, 2 bar, 20 h); G – ground with coarse diamond bur (grit size 181 μ m...
Source: Brazilian Oral Research - May 3, 2018 Category: Dentistry Source Type: research
Comparing osteogenic effects between concentrated growth factors and the acellular dermal matrix
Abstract Concentrated growth factor (CGF) is an autogenuous product that contains highly concentrated number of platelets and can be derived from venous blood by selective centrifugation. It has been speculated that local growth factors in human platelets (insulinlike growth factor, IGF; transforming growth factor, TGF-b; platelet derived growth factor, PDGF) would enhance healing of grafts and also counteract resorption. The osteogensis effect of CGF and acellular dermal matrix (ADM) for alveolar cleft defects was evaluated in this study. Twenty alveolar cleft patients were divided randomly into two groups. One group unde...
Source: Brazilian Oral Research - May 3, 2018 Category: Dentistry Source Type: research
Medication-related osteonecrosis of the jaw, osteoradionecrosis, and osteomyelitis: A comparative histopathological study
In conclusion, histopathological aspects of ORNJ, OMJ, and MRONJ do not permit a conclusive diagnosis, emphasizing the necessity of a detailed clinical report. (Source: Brazilian Oral Research)
Source: Brazilian Oral Research - May 3, 2018 Category: Dentistry Source Type: research
A multicenter study of oral health behavior among adult subjects from three South American cities
In conclusion, the oral health behavior of South American adult subjects from these cities is below the international recommendations, especially in relation to interdental cleaning and regular dental visits. (Source: Brazilian Oral Research)
Source: Brazilian Oral Research - May 3, 2018 Category: Dentistry Source Type: research
Bond strength between a polymer-infiltrated ceramic network and a composite for repair: effect of several ceramic surface treatments
Abstract: The effects of several ceramic surface treatments on bond strength of a polymer-infiltrated ceramic network and resin composite as repair material were evaluated. CAD-CAM blocks of a polymer-infiltrated ceramic network (Vita Enamic) were sliced and subjected to aging process, followed by embedding in acrylic resin. The bonding/repair area was treated as follows (n = 30): C – without treatment; UA – universal adhesive application; FM – 10% hydrofluoric acid and silane application; OM – airborne-particle abrasion with aluminum oxide and silane application; RP – tribochemical silica coating; and CA –...
Source: Brazilian Oral Research - April 6, 2018 Category: Dentistry Source Type: research
Is the fluoride intake by diet and toothpaste in children living in tropical semi-arid city safe?
Abstract: Data about total fluoride intake in children living in a tropical semi-arid climate city is scarce, thus we conducted this study. Fifty-eight children aged two to five years, living in a Brazilian tropical city with optimally fluoridated water were selected. Dietary samples were collected using the duplicate diet method on two non-consecutive days in the children's home toothpaste was determined by subtracting the amount of fluoride recovered after brushing from the amount placed on the toothbrush. The mean total dose (SD) of fluoride intake was 0.043(0.016) mg F ·kg-1·d-1, with the major (60.6%) contribution f...
Source: Brazilian Oral Research - April 6, 2018 Category: Dentistry Source Type: research
Risk factors and comorbidities in Brazilian patients with orofacial clefts
Abstract: Considering that environmental risk factors substantially contribute to the etiology of orofacial clefts and that knowledge about the characteristics and comorbidities associated with oral clefts is fundamental to promoting better quality of life, this study aimed to describe the risk factors, main characteristics, and comorbidities of a group of patients with cleft lip and/or cleft palate (CL/P) from Rio Grande do Norte (RN), Brazil. Data were obtained from 173 patients with CL/P using a form from the Brazilian database on Orofacial Clefts. Most patients were male with cleft lip and palate and had a normal size ...
Source: Brazilian Oral Research - April 6, 2018 Category: Dentistry Source Type: research
