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Brazilian Oral Research

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https://www.readbyqxmd.com/read/29898031/effect-of-different-bonding-protocols-on-degree-of-monomer-conversion-and-bond-strength-between-orthodontic-brackets-and-enamel
#1
Lorena Marques Ferreira de Sena, Helga Adachi Medeiros Barbosa, Sergei Godeiro Fernandes Rabelo Caldas, Mutlu Ozcan, Rodrigo Othávio de Assunção E Souza
The objective of the present study was to evaluate the effect of different surface treatments and polymerization protocols on the bond strength of brackets to enamel, and the degree of conversion of the bonding agents. 120 bovine crowns were embedded in acrylic resin blocks and sanded. Next, the blocks were randomly assigned into 12 groups. Metal brackets were bonded to enamel according to the "surface treatment" factor (A: Phosphoric Acid; ATxt: Phosphoric Acid + Transbond XT Primer®; Tse: Transbond Plus Self Etching Primer®; and SBU: Scotchbond Universal®) and "polymerization" factor (R20: Radii-Cal®/20 seconds; V20: Valo Cordless®/20 seconds; and V3: Valo Cordless®/3 seconds)...
June 11, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29898030/effect-of-topical-erythropoietin-epo-on-palatal-wound-healing-subsequent-to-free-gingival-grafting-fgg
#2
Siamak Yaghobee, Nina Rouzmeh, Hoori Aslroosta, Sanaz Mahmoodi, Afshin Khorsand, Mohamad Javad Kharrazifard
Free gingival grafting, the most predictable technique to increase the keratinized gingiva, leaves an open wound on the palate and the resulting discomfort during the healing phase is a significant concern. This study was intended to evaluate the effect of topical erythropoietin on healing of the donor site. Twelve patients lacking an attached gingiva at two sites in the mandible were included. In the test group, 1 mL of gel containing erythropoietin at a concentration of 4,000 IU mL-1 was applied to the donor site, whereas the control group was treated with 2 mL of the gel alone...
June 11, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29898029/fatigue-strength-of-several-dental-ceramics-indicated-for-cad-cam-monolithic-restorations
#3
Gabriela Nishioka, Catina Prochnow, Aline Firmino, Marina Amaral, Marco Antonio Bottino, Luiz Felipe Valandro, Melo Renata Marques de
This in vitro study evaluated the fatigue strength of different ceramic materials indicated for monolithic restorations. Disc-shaped specimens were made according to ISO 6872 from five different ceramic materials: feldspathic ceramic (FC), polymer-infiltrated ceramic network (PIC), lithium disilicate glass-ceramic (LD), zirconia-reinforced lithium silicate glass-ceramic (ZLS), and high translucent tetragonal zirconia polycrystals doped by yttrium (YZ-HT). After obtaining the mean of each material (n = 5) from monotonic load-to-failure tests, specimens (n = 20) were subjected to fatigue tests (staircase method) using a biaxial flexural setup (piston-on-three-balls), to determine the fatigue strength...
June 11, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29898028/effects-of-concentrated-growth-factors-on-the-angiogenic-properties-of-dental-pulp-cells-and-endothelial-cells-an-in-vitro-study
#4
Huan Jun, Dou Lei, Yan Qifang, Xu Yuan, Yang Deqin
The aim was to investigate the angiogenic effects of concentrated growth factors on human dental pulp cells and human umbilical vein endothelial cells. Cells were treated with concentrated growth factor extracts. The CCK-8 assay and cell cycle assay were conducted to evaluate cell growth. Cell migration was evaluated by the Transwell migration assay. Angiogenesis-associated mRNA and protein expression levels were determined using quantitative real-time PCR and Western blotting, respectively. A tube formation assay was conducted to evaluate the angiogenic capacity in vitro...
June 11, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29898023/immediate-laser-induced-hemostasis-in-anticoagulated-rats-subjected-to-oral-soft-tissue-surgery-a-double-blind-study
#5
Flavio Halak de Oliveira Campos, Lorraine Braga Ferreira, Marcelo Munhoes Romano, Maria Stella Moreira, Carlos de Paula Eduardo, Karen Müller Ramalho
Given the growing trend towards medical indications for continuous use of anticoagulants, the number of patients on these medications continues to rise. The management of patients on oral anticoagulants requiring oral surgical procedures has aroused much controversy. Changes in an anticoagulation regimen are associated with an increased risk of thromboembolism. However, it seems logical and advantageous for the patients' health if surgery could be performed without any change to the anticoagulation therapy...
June 7, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29898022/comparative-study-of-oral-and-salivary-parameters-in-patients-with-and-without-loss-of-bone-mass
#6
Igor Figueiredo Pereira, Cláudia Borges Brasileiro, Núbia Priscilla Kleperon, Mauro Henrique Nogueira Guimarães de Abreu, Tarcília Aparecida da Silva, Ricardo Alves Mesquita, Tania Mara Pimenta Amaral
Osteoporosis is an insidious and increasingly prevalent disease that can cause fractures and affect patients' quality of life. The current study comparatively evaluates patients with and without loss of bone mass in terms of salivary calcium, viscosity, and pH. A controlled cross-sectional study was conducted in two groups of 32 postmenopausal women subjected to a bone densitometry scan and later referred for dental management at the Federal University of Minas Gerais, Brazil. The patients were assigned to two groups: Group 1 - patients with low bone mineral density (BMD) and Group 2 - patients without bone mineral changes...
June 7, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29898021/dental-caries-in-schoolchildren-influence-of-inattention-hyperactivity-and-executive-functions
#7
Isabella Mota-Veloso, Maria Letícia Ramos-Jorge, Marcio Alexandre Homem, Isabela Almeida Pordeus, Saul Martins Paiva, Fernanda Oliveira-Ferreira
Attention-deficit/hyperactivity disorder (ADHD) is characterized by inappropriate levels of hyperactivity, impulsivity, and/or inattention. Individuals with ADHD may present limitations with regard to executive functions and performing activities that involve planning and/or attention/concentration. The aim of the study was to investigate the association between dental caries and signs of ADHD in a representative sample of schoolchildren. A representative sample of 851 schoolchildren aged seven to 12 years was randomly selected from public and private schools...
June 7, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29898020/pain-and-temporomandibular-disorders-in-patients-with-eating-disorders
#8
Samanta Pereira Souza, Reynaldo Antequerdds, Eduardo Wagner Aratangy, Silvia Regina Dowgan Tesseroli Siqueira, Táki Athanássios Cordás, José Tadeu Tesseroli Siqueira
Orofacial pain and temporomandibular dysfunction may cause chronic facial pain, which may interfere with the emotional state and food intake of patients with eating disorders (ED), such as anorexia nervosa (AN) and bulimia nervosa (BN). Sixty-four patients were assigned to four groups: Group A (AN - restricting subtype): 07; Group B (AN - purging subtype ): 19; Group C (BN): 16; and Group D (control): 22. Complaints of pain are more prevalent in individuals with eating disorders (p<0.004). There are differences between the presence of myofascial pain and the number of hospitalizations (p = 0...
June 7, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29898019/inorganic-filler-content-of-resin-based-luting-agents-and-the-color-of-ceramic-veneers
#9
Fabíola Jardim Barbon, Rafael Ratto Moraes, Joseane Viccari Calza, Ana Paula Perroni, Aloísio Oro Spazzin, Noéli Boscato
The influence of inorganic filler content of resin-based luting agents (RBLAs) on color change (ΔE00), CIEL*a*b* (individual color coordinates), and translucency parameters (TP) of simulated ceramic laminate veneer (CLV) was investigated. RBLAs with low, intermediate, and high inorganic filler content (55%, 65%, and 75% mass fractions, respectively) were prepared. Feldspar ceramic (Vitablocs Mark II) specimens (1.2 mm × 0.8 mm, A1C shade) were bonded to simulated composite resin substrates (1.6 mm × 1.2 mm, A2D shade) using three experimental and a commercial (RelyX Veneer) RBLA (translucent shade)...
June 7, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29898018/complications-with-pmma-compared-with-other-materials-used-in-cranioplasty-a-systematic-review-and-meta-analysis
#10
Rafaella de Souza Leão, Juliana Raposo Souto Maior, Cleidiel Aparecido de Araújo Lemos, Belmiro Cavalcanti do Egito Vasconcelos, Marcos Antônio Japiassú Resende Montes, Eduardo Piza Pellizzer, Sandra Lúcia Dantas Moraes
Polymethyl methacrylate (PMMA) has been considered a suitable material for cranioplasty. However, no consensus has been reached concerning the best material for cranioplasty with regard to minimizing complications. Thus, this systematic review and meta-analysis aimed to compare the complication rates of PMMA with those of autologous bone and titanium mesh. This review was registered with PROSPERO (CRD42016042725). Systematic searches were conducted on PubMed/MEDLINE, Scopus, and Web of Science. The focus question was, "Do PMMA prostheses used in cranioplasty have complications rates similar to those of autologous bone and titanium mesh?" A meta-analysis of complication rates was performed on the basis of dichotomous outcomes assessed by risk ratio (RR) with corresponding 95% confidence intervals (CI)...
June 7, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29846391/do-different-strains-of-e-faecalis-have-the-same-behavior-towards-intracanal-medications-in-in-vitro-research
#11
Rafaela Fernandes Zancan, Lyz Cristina Furquim Canali, Talita Tartari, Flaviana Bombarda de Andrade, Rodrigo Ricci Vivan, Marco Antonio Hungaro Duarte
The aim of this study was to evaluate the antimicrobial action of different endodontic pastes against Enterococcus faecalis ATCC 29212, isolated from the urinary tract, and compare the action with E. faecalis ATCC 4083, isolated from the root canal. For this purpose, dentin blocks were infected for 21 days with both bacteria at different time-intervals to ensure there would be no cross contamination. After this period, blocks were immersed in the test medications for 7 days, according to the following groups: CH/S, CH/P, CH/CMCP, CH/CHX, CH/DAP and TAP...
May 24, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29846390/tissue-reaction-to-aroeira-myracrodruon-urundeuva-extracts-associated-with-microorganisms-an-in-vivo-study
#12
Carlos Roberto Emerenciano Bueno, Diego Valentim, Élerson Gaetti Jardim Junior, Daniela Nardi Mancuso, Gustavo Sivieri-Araujo, Rogerio Castilho Jacinto, Luciano Tavares Angelo Cintra, Eloi Dezan-Junior
Based on aroeira's (Myracrodruon urundeuva) antimicrobial activity and a future trend to compose intracanal medication, the aim of this study was to assess in vivo inflamatory tissue response to the extracts by edemogenic and histological analysis containing inactivated facultative and anaerobic microorganisms. For edema quantification, eighteen animals were divided into three groups (n = 3, periods: 3 and 6 hours) and 0.2 mL of 1% Evans blue per 100 g of body weight was injected into the penile vein under general anesthesia...
May 24, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29846389/antifungal-antibiofilm-and-antiproliferative-activities-of-guapira-graciliflora-mart
#13
Carolina Medeiros de Almeida, Rennaly de Freitas Lima, Tereza Karla Vieira Lopes da Costa, Ilza Maria de Oliveira Sousa, Elaine Cristina Cabral, Rosanna Tarkany Basting, Adriana Della Torre, Yuri Wanderley Cavalcanti, Pedro Luiz Rosalen, Marta Cristina Teixeira Duarte, Ana Lúcia Tasca Gois Ruiz, Mary Ann Foglio, Gustavo Pina Godoy, Edja Maria Melo de Brito Costa
The aim of this study was to evaluate in vitro the antifungal, antibiofilm and antiproliferative activities of the extract from the leaves of Guapira graciliflora Mart. The phytochemical characterization of the extract was performed using electrospray ionization mass spectrometry (ESI-MS). The antimicrobial activity of the extract and its fractions was evaluated using the broth microdilution method against species of Candida. The inhibition of C. albicans biofilm was evaluated based on the number of colony-forming units (CFU) and metabolic activity (MTT)...
May 24, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29846388/fluoride-concentrations-in-salt-marketed-in-managua-nicaragua
#14
Karla Irina Walsh, Jaime Aparecido Cury
Nicaraguan legislation has established that fluoride concentrations in salt should be 200-225 mg/kg, but no report describes fluoride concentrations in salt marketed in this country. We evaluated the fluoride concentrations in 33 packages of salt of 11 brands (n = 3 each) purchased in Managua, Nicaragua. According to the package information, 9 of the 11 brands were fluoridated. Six aliquots of each package were weighed (mean 2.5 ± 0.3 g; n = 198) and dissolved in 0.025 g/ml water. Duplicates of 1.0 ml of solutions prepared were buffered (1:1; v/v) with TISAB II...
May 24, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29846387/chlorhexidine-and-proanthocyanidin-enhance-the-long-term-bond-strength-of-resin-based-endodontic-sealer
#15
Thaís Fantinato Trindade, Ana Flávia Simões Barbosa, Larissa Moreira Spinola de Castro-Raucci, Yara Teresinha Correa Silva-Sousa, Vivian Colucci, Walter Raucci-Neto
The aim of this study was to evaluate the effects of proanthocyanidin (PA) and chlorhexidine (CHX) on the bond strength (BS), failure pattern, and resin-dentin interface morphology of the endodontic sealers EndoREZ and AH Plus after 24 h and 6 months of water storage. A total of 120 prepared bovine roots were divided into six groups: AH Plus, CHX+AH Plus, PA+AH Plus, EndoREZ, CHX+EndoREZ, and PA+EndoREZ. Dentin was treated for 1 or 5 min with 2% CHX or 15% PA, respectively. Roots were filled and stored in water for 24 h or 6 months (n = 10)...
May 24, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29846386/the-effect-of-hydrofluoric-acid-and-resin-cement-formulation-on-the-bond-strength-to-lithium-disilicate-ceramic
#16
Daniel Sundfeld, Alan Rodrigo Muniz Palialol, Ana Paula Piovesan Fugolin, Gláucia Maria Bovi Ambrosano, Lourenço Correr-Sobrinho, Luis Roberto Marcondes Martins, Carmem Silvia Pfeifer
To investigate how the hydrofluoric acid (HF) concentrations applied to a lithium disilicate glass-ceramic (EMX) affects the surface morphology and microtensile bond strength (μTBS) of ceramics to dentin, using light-cured resin cements with or without UDMA. Sixty-three EMX square ceramic blocks were etched for 20 seconds using different HF concentrations (1%, 5% and 10%) and luted to dentin using two types of resin cement combinations: BisGMA/TEGDMA and BisGMA/TEGDMA/UDMA (n = 10). Each bonded EMX-dentin block was sectioned to obtain 1 mm2 sticks for μTBS evaluation...
May 24, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29846385/active-compounds-and-derivatives-of-camellia-sinensis-responding-to-erosive-attacks-on-dentin
#17
Vanara Florêncio Passos, Mary Anne Sampaio de Melo, Juliana Paiva Marques Lima, Felipe Franco Marçal, Cecília Atem Gonçalves de Araújo Costa, Lidiany Karla Azevedo Rodrigues, Sérgio Lima Santiago
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...
May 24, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29846384/individuals-with-special-needs-and-their-families-oral-health-related-quality-of-life
#18
Viviane Cancio, Khawana Faker, Cristiane Baccin Bendo, Saul Martins Paiva, Mônica Almeida Tostes
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 (WHO) criteria...
May 24, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29846383/association-between-metabolic-syndrome-and-periodontitis-a-systematic-review-and-meta-analysis
#19
Luciana Dondonis Daudt, Marta Liliana Musskopf, Marina Mendez, Luciana Loss Reck Remonti, Cristiane Bauermann Leitão, Jorge Luiz Gross, Patricia Weidlich, Rui Vicente Oppermann
The aim of the present study was to evaluate the association between metabolic syndrome (MS) and periodontitis (PD), through a systematic review and meta-analysis. Original observational studies assessing the association between MS and PD in adults, published before May 11th (2017), were identified through electronic searches of MEDLINE, EMBASE and Cochrane Library databases. The PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guideline was used. For studies to be included, they had to mention the criteria used to diagnose MS and to have used at least one clinical measure to diagnose PD...
May 24, 2018: Brazilian Oral Research
https://www.readbyqxmd.com/read/29561951/in-vitro-effects-of-alcohol-containing-mouthwashes-on-human-enamel-and-restorative-materials
#20
COMPARATIVE STUDY
José Eduardo Pelizon Pelino, Alan Passero, Airton Abrahao Martin, Christine Ann Charles
The objective of this study was to evaluate the in vitro effects, including surface morphological characteristics and chemical elemental properties, of different mouthwash formulations on enamel and dental restorative materials, simulating up to 6 months of daily use. Human enamel samples, hydroxyapatite, composite resin, and ceramic surfaces were exposed to 3 different mouthwashes according to label directions - Listerine® Cool Mint®, Listerine® Total Care, and Listerine® Whitening - versus control (hydroalcohol solution) to simulate daily use for up to 6 months...
March 15, 2018: Brazilian Oral Research
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