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Brazilian Oral Research

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https://www.readbyqxmd.com/read/28403332/influence-of-root-dentin-treatment-on-the-push-out-bond-strength-of-fibre-reinforced-posts
#1
Altair Soares Moura, Rodrigo Dantas Pereira, Fuad Jacob Abi Rached, Bruno Monguilhott Crozeta, Jardel Francisco Mazzi-Chaves, Luis Eduardo Souza-Flamini, Antonio Miranda Cruz
This study evaluates the influence of root dentin treatment with NaOCl alone and combined with EDTA, with and without ultrasound activation, on the push-out bond strength (BS) of fiber-reinforced posts in weakened roots, cemented with RelyX or Panavia. The root canals of 42 maxillary canines were instrumented with Reciproc and 2.5% NaOCl. In the coronal 12mm of all canals, experimental weakening of the roots was produced by reducing dentin thickness with 2.44mm diameter diamond burs. The roots were assigned to 3 groups (n = 14) according to root dentin treatment: 2...
April 10, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28403331/effects-of-avocado-soybean-unsaponifiables-asu-on-the-treatment-of-ligature-induced-periodontitis-in-rats
#2
Guilherme José Pimentel Lopes de Oliveira, Luiz Guilherme Freitas de Paula, João Antônio Chaves de Souza, Rubens Spin-Neto, Andreas Stavropoulos, Rosemary Adriana Chiérici Marcantonio
The purpose of this study is to evaluate the effect of the avocado/soybean unsaponifiables (ASU) on the treatment of induced periodontitis in rats. Periodontitis was induced in 84 rats via ligature placement around the second upper molar, which was removed after 7 days, and scaling and root planning (SRP) was performed at this time. Subsequently, the rats were randomly allocated to four groups with 21 animals each: One SRP group in which saline solution was administered (SS), and three groups in which ASU was administered (0...
April 10, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28403330/dental-management-survey-brazil-dms-br-creation-and-validation-of-a-management-instrument
#3
Paola Sampaio Gonzales, Ismar Eduardo Martins, Maria Gabriela Haye Biazevic, Paulo Roberto da Silva, Edgard Michel-Crosato
Questionnaires for the assessment of knowledge and self-perception can be useful to diagnose what a dentist knows about management and administration. The aim of the present study was to create and validate the Dental Management Survey Brazil (DMS-BR) scale, based on meetings with experts in the field. After having elaborated the first version, 10 audits were performed in dental offices in order to produce the final version, which included nine dimensions: location, patient, finance, marketing, competition, quality, staff, career, and productivity...
April 10, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28403329/longevity-of-metal-ceramic-crowns-cemented-with-self-adhesive-resin-cement-a-prospective-clinical-study
#4
Lucas Pradebon Brondani, Tatiana Pereira-Cenci, Vinicius Felipe Wandsher, Gabriel Kalil Pereira, Luis Felipe Valandro, César Dalmolin Bergoli
Resin cements are often used for single crown cementation due to their physical properties. Self-adhesive resin cements gained widespread due to their simplified technique compared to regular resin cement. However, there is lacking clinical evidence about the long-term behavior of this material. The aim of this prospective clinical trial was to assess the survival rates of metal-ceramic crowns cemented with self-adhesive resin cement up to six years. One hundred and twenty-nine subjects received 152 metal-ceramic crowns...
April 10, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28380090/individual-and-contextual-factors-influencing-dental-health-care-utilization-by-preschool-children-a-multilevel-analysis
#5
Chaiana Piovesan, Thiago Machado Ardenghi, Fausto Medeiros Mendes, Bernardo Antonio Agostini, Edgard Michel-Crosato
The effect of contextual factors on dental care utilization was evaluated after adjustment for individual characteristics of Brazilian preschool children. This cross-sectional study assessed 639 preschool children aged 1 to 5 years from Santa Maria, a town in Rio Grande do Sul State, located in southern Brazil. Participants were randomly selected from children attending the National Children's Vaccination Day and 15 health centers were selected for this research. Visual examinations followed the ICDAS criteria...
March 30, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28380089/relationship-between-articular-eminence-inclination-and-alterations-of-the-mandibular-condyle-a-cbct-study
#6
Saione Cruz Sa, Saulo Leonardo Sousa Melo, Daniela Pita de Melo, Deborah Queiroz Freitas, Paulo Sérgio Flores Campos
This study aimed at verifying the correlation among angulation of the articular eminence (AE), shape of the condyle and its degenerative bone diseases (DBDs), according to age and sex, through Cone Beam Computed Tomography (CBCT). Five hundred and twenty-eight temporomandibular joints (TMJ) were evaluated. The condyles were classified as: flat, convex, angled and rounded, and the AE angulation was measured. The DBDs evaluated were osteophytes, flattening, erosion, subcortical cysts and spinal sclerosis. There was no difference in the mean angulations in relation to age group (p>0...
March 30, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28380088/dental-caries-and-quality-of-life-of-preschool-children-discriminant-validity-of-the-ecohis
#7
Meire Coelho Ferreira, Maria Letícia Ramos-Jorge, Leandro Silva Marques, Fernanda de Oliveira Ferreira
The aim of the present study was to confirm the discriminant validity (obtained using traditional statistical methods) of the Early Childhood Oral Health Impact Scale (ECOHIS) between preschool children with and without caries (mean score) through an evaluation of the effect size. A systematic search of electronic databases and a manual search were performed for studies published up to December 2015 involving the use of the ECOHIS for the evaluation of the impact of dental caries on oral health-related quality of life (OHRQoL) among preschool children...
March 30, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28380087/orofacial-clefts-in-brazil-and-surgical-rehabilitation-under-the-brazilian-national-health-system
#8
Giselle Firmino Torres de Sousa, Angelo Giuseppe Roncalli
The objective of this study was to investigate the prevalence of live births with orofacial clefts in Brazil from 2009 to 2013, according to Brazil's federative units and regions, and correlate it with the number of corrective surgery procedures for cleft lip and palate performed through the Brazilian National Health System in the same period. The data were collected from the National Live Birth System (SINASC in Portuguese) and the Hospital Information System (SIH-SUS in Portuguese). The results showed that the average prevalence of oral clefts in the period was 5...
March 30, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28380086/effectiveness-of-a-pre-procedural-mouthwash-in-reducing-bacteria-in-dental-aerosols-randomized-clinical-trial
#9
Belén Retamal-Valdes, Geisla Mary Soares, Bernal Stewart, Luciene Cristina Figueiredo, Marcelo Faveri, Steven Miller, Yun Po Zhang, Magda Feres
The aim of this randomized, single blinded clinical trial was to evaluate the effect of a pre-procedural mouthwash containing cetylpyridinium chloride (CPC), zinc lactate (Zn) and sodium fluoride (F) in the reduction of viable bacteria in oral aerosol after a dental prophylaxis with ultrasonic scaler. Sixty systemically healthy volunteers receiving dental prophylaxis were randomly assigned to one of the following experimental groups (15 per group): (i) rinsing with 0.075% CPC, 0.28% Zn and 0.05% F (CPC+Zn+F), (ii) water or (iii) 0...
March 30, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28355313/short-term-quality-of-life-change-perceived-by-patients-after-transition-to-mandibular-overdentures
#10
Lara Maria Herrera, Raíssa Ananda Paim Strapasson, Luiz Eugênio Nigro Mazzilli, Rodolfo Francisco Haltenhoff Melani
Palatal rugae patterns are anatomic structures considered unique to each person. Monozygotic twins present similarities, however, Rugoscopy in particular, may contribute to their individualization for forensic purposes. The aims of this study were: to study the palatal rugae classifications of Briñón; to propose improvements to facilitate use of this method, if pertinent; and to characterize palatal rugae in a sample of Brazilian monozygotic twins and singletons. Precise reproducibility of the two methods of Briñón, from 1982 and 2011, was prevented by poor intra-examiner agreement (70% and 13% respectively)...
March 27, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28327781/differentiation-between-palatal-rugae-patterns-of-twins-by-means-of-the-bri%C3%A3-%C3%A3-n-method-and-an-improved-technique
#11
Lara Maria Herrera, Raíssa Ananda Paim Strapasson, Luiz Eugênio Nigro Mazzilli, Rodolfo Francisco Haltenhoff Melani
Palatal rugae patterns are anatomic structures considered unique to each person. Monozygotic twins present similarities, however, Rugoscopy in particular, may contribute to their individualization for forensic purposes. The aims of this study were: to study the palatal rugae classifications of Briñón; to propose improvements to facilitate use of this method, if pertinent; and to characterize palatal rugae in a sample of Brazilian monozygotic twins and singletons. Precise reproducibility of the two methods of Briñón, from 1982 and 2011, was prevented by poor intra-examiner agreement (70% and 13% respectively)...
March 20, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28273206/amf-naf-sncl2-solution-reduces-in-situ-enamel-erosion-profilometry-and-cross-sectional-nanoindentation-analysis
#12
Thayanne Monteiro Ramos-Oliveira, Camila Vieira Silva, Paula Mendes Acatauassu Nunes, Cecília Pedroso Turssi, Peter Rechmann, Patricia Moreira de Freitas
This in situ study aimed to investigate the effect of a tin-containing fluoride solution in preventing enamel erosion. Also, its effects on the partly demineralized zone were assessed for the first time. Thirteen volunteers participated in this 2-phase study, wearing removable intra-oral appliances containing four sterilized bovine enamel slabs, for 8 days, where 2 treatment protocols were tested using samples in replicas (n = 13): CO - no treatment (negative control) and FL - AmF/NaF/SnCl2 solution (500 ppm F-, 800 ppm Sn2+, pH = 4...
March 6, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28273205/expression-of-e-cadherin-and-involucrin-in-leukoplakia-and-oral-cancer-an-immunocytochemical-and-immunohistochemical-study
#13
Alessandra Dutra da Silva, Bruna Jalfim Maraschin, Natalia Koerich Laureano, Natália Daroit, Fernanda Brochier, Leonardo Bündrich, Fernanda Visioli, Pantelis Varvaki Rados
To assess the immunocytochemical and immunohistochemical correlation of adhesion (E-cadherin) and cell differentiation (involucrin) molecules in oral leukoplakia and oral squamous cell carcinoma. Cytological samples and biopsies were obtained from male and female patients aged over 30 years with oral leukoplakia (n = 30) and oral squamous cell carcinoma (n = 22). Cell scrapings and the biopsy were performed at the site of the lesion and histological slides were prepared for the immunocytochemical analysis of exfoliated oral mucosal cells and for the immunohistochemical analysis of biopsy tissues using E-cadherin and involucrin...
March 6, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28273197/short-implants-to-support-mandibular-complete-dentures-photoelastic-analysis
#14
Marcele Jardim Pimentel, Wander José da Silva, Altair Antoninha Del Bel Cury
This study evaluated the stress behavior around short implants in edentulous atrophic mandibles. Six groups included implants with two diameters regular and wide (4 and 5 mm) and three lengths (5, 7 and 9 mm) as follows: Ci9 (9 x 4 mm), Ci7 (7 x 4 mm), Ci5 (5 x 4 mm), Wi9 (9 x 5 mm), Wi7 (7 x 5 mm) and Wi5 (5 x 5 mm). These groups were compared to the control group CG (11 x 4 mm). The analysis was performed with the photoelastic method (n = 6). Each model comprised 4 implants with the same length and diameter connected by a chromium-cobalt bar that simulates a fixed denture...
February 23, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28146221/osteogenic-potential-of-periodontal-ligament-stem-cells-are-unaffected-after-exposure-to-lipopolysaccharides
#15
Mayra Laino Albiero, Bruna Rabelo Amorim, Márcio Zaffalon Casati, Enilson Antonio Sallum, Francisco Humberto Nociti, Karina Gonzales Silvério
Periodontitis develops as a result of a continuous interaction between host cells and subgingival pathogenic bacteria. The periodontium has a limited capacity for regeneration, probably due to changes in periodontal ligament stem cells (PDLSCs) phenotype. The aim of this study was to evaluate the effects of lipopolysaccharides from Porphyromonas gingivalis (PgLPS) on mesenchymal phenotype and osteoblast/cementoblast (O/C) potential of PDLSCs. PDLSCs were assessed for Toll-like receptor 2 (TLR2) expression by immunostaining technique...
January 26, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28146220/par-2-expression-in-the-gingival-crevicular-fluid-reflects-chronic-periodontitis-severity
#16
Henrique Fukushima, Vanessa Tubero Euzebio Alves, Verônica Franco de Carvalho, Lucas Macedo Batitucci Ambrósio, Rosangela Aparecida Dos Santos Eichler, Maria Helena Catelli de Carvalho, Luciana Saraiva, Marinella Holzhausen
Recent studies investigating protease-activated receptor type 2 (PAR-2) suggest an association between the receptor and periodontal inflammation. It is known that gingipain, a bacterial protease secreted by the important periodontopathogen Porphyromonas gingivalis can activate PAR-2. Previous studies by our group found that PAR-2 is overexpressed in the gingival crevicular fluid (GCF) of patients with moderate chronic periodontitis (MP). The present study aimed at evaluating whether PAR-2 expression is associated with chronic periodontitis severity...
January 26, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28146219/effects-of-platelet-rich-fibrin-on-healing-of-intra-bony-defects-treated-with-anorganic-bovine-bone-mineral
#17
RANDOMIZED CONTROLLED TRIAL
Yasemin Sezgin, Ahu Uraz, I Levent Taner, Rana Çulhaoğlu
Anorganic bovine bone mineral (ABBM) is extensively used in the treatment of intra-bony defects. Platelet-rich fibrin (PRF) is a new-generation platelet concentrate with a simplified technique. Although certain studies have reported the use of PRF in the treatment of intra-bony defects, to date, none of them have evaluated its additive effects with ABBM. Therefore, a randomised, split-mouth clinical trial was conducted to compare healing of intra-bony defects treated with an ABBM-PRF combination with healing of those treated with ABBM alone...
January 26, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28146218/influence-of-solvents-on-the-bond-strength-of-resin-sealer-to-intraradicular-dentin-after-retreatment
#18
Marcelo Palhais, Manoel Damião Sousa-Neto, Fuad Jacob Abi Rached-Junior, Mariana Carvalho de Andrade Amaral, Edson Alfredo, Carlos Eduardo Saraiva Miranda, Yara Teresinha Corrêa Silva-Sousa
This study evaluated the removal of filling material with ProTaper Universal Rotary Retreatment system (PTR) combined with solvents and the influence of solvents on the bond strength (PBS) of sealer to intraradicular dentin after canal reobturation. Roots were endodontically treated and distributed to five groups (n = 12). The control group was not retreated. In the four experimental groups, canals were retreated with PTR alone or in combination with xylol, orange oil, and eucalyptol. After filling material removal, two specimens of each group were analysed by SEM and µCT to verify the presence of filling remnants on root canal walls...
January 26, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28099580/risk-factors-hyposalivation-and-impact-of-xerostomia-on-oral-health-related-quality-of-life
#19
Sven Niklander, Laura Veas, Cristina Barrera, Flavio Fuentes, Giuliana Chiappini, Maureen Marshall
To determine xerostomia-related frequency, factors, salivary flow rates and Oral Health-Related Quality of Life (OHRQoL) of patients attending the Universidad Andrés Bello Dental School Clinic, in the city of Viña del Mar, Chile. The study involved 566 patients assessed with xerostomia, based on a single standardized questionnaire. The severity and impact of xerostomia on OHRQoL was assessed using a visual analogue scale (VAS) and the short version of the Oral Health Impact Profile Questionnaire (OHIP-14sp), respectively...
January 16, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28099579/factors-for-determining-dental-anxiety-in-preschool-children-with-severe-dental-caries
#20
Jenny Abanto, Evelyn Alvarez Vidigal, Thiago Saads Carvalho, Stella Núbia Coelho de Sá, Marcelo Bönecker
The aim of this study was to assess the clinical and socioeconomic indicators associated with dental anxiety in preschool children with severe dental caries. A total of 100 children between 3 and 5 years of age were selected during a dental screening procedure. The selection criteria were having at least one tooth with dental caries and a visible pulpal involvement, ulceration, fistula, and abscess (PUFA) index of ≥1 in primary teeth. Before the clinical examination or any treatment procedure was performed, we evaluated the children's dental anxiety using the Facial Image Scale (FIS)...
January 16, 2017: Brazilian Oral Research
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