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Brazilian Dental Journal

Eduarda Santiago Vaz-Garcia, Victor Talarico Leal Vieira, Natasha Pereira da Silva Ferreira Petitet, Edson Jorge Lima Moreira, Hélio Pereira Lopes, Carlos Nelson Elias, Emmanuel João Nogueira Leal Silva, Henrique Dos Santos Antunes
The aim of the present study was to evaluate the cyclic fatigue of two anatomic finishing files: XP-Endo Finisher and XP-Clean. Roughness pattern and the micro-hardness of the files were also assessed. Instruments were subjected to cyclic fatigue resistance measuring the time to fracture in an artificial stainless-steel canal with a 60° angle and a 5-mm radius of curvature. The fracture surface of all fragments was examined with a scanning electron microscope. The roughness of the working parts was quantified by using a profilometer and the micro-hardness test was carried out using a Vickers hardness tester...
April 2018: Brazilian Dental Journal
Ekim Onur Orhan, Özgür Irmak
No abstract text is available yet for this article.
March 2018: Brazilian Dental Journal
Rafaelle Ferreira Dos Santos, Rogéria Lucio de Oliveira, Marina Gallottini, Rubens Caliento, Dmitry José de Santana Sarmento
The objective of the present study was to determine the prevalence of actinic cheilitis among extractive mining workers and factors associated with the condition, especially the relationship between clinical appearance and the length of occupational exposure to sunlight. A cross-sectional study was performed in Dona Inês, Paraíba, Brazil between 2014 and 2015. A clinical examination, clinical photography and a questionnaire were applied to 201 extractive mining workers. The T-student's, ANOVA one-way, Fisher's exact and Pearson chi-squared tests were performed and the significance level was set at 5%...
March 2018: Brazilian Dental Journal
Fabíola Jardim Barbon, Rafael Ratto Moraes, Noéli Boscato, Rodrigo Alessandretti, Aloísio Oro Spazzin
This study evaluated the effect of the accelerated artificial aging (AAA) on feldspar ceramic strength and the reinforcing effect promoted by adhesive cementation with resin luting agent. One hundred twenty feldspar ceramic disks were obtained. Sixty disks were acid-etched, silanized, and coated with an experimental resin luting agent simulating the adhesive luting procedures. Four groups were created (n=30): uncoated ceramic (control group), uncoated ceramic submitted to AAA, ceramic coated with resin luting agent, and coated ceramic submitted to AAA...
March 2018: Brazilian Dental Journal
Marina Carvalho Prado, Nancy Kudsi de Carvalho, Rafael Pino Vitti, Fabrício Aulo Ogliari, Luciana Moura Sassone, Emmanuel João Nogueira Leal Silva
This study investigated the bond strength of two experimental root canal sealers based on MTA and butyl ethylene glycol disalicylate: MTAe and MTAe-HA. The reference materials used for comparison were AH Plus and MTA Fillapex. Twenty human upper incisors were selected and one 1 mm slice was obtained from the cervical third of each root. On the coronal surface of each slice, four 0.9 mm wide holes were drilled through the dentine. Standardized irrigation was performed and holes were filled with one of the four tested sealers: AH Plus, MTA Fillapex, MTAe, and MTAe-HA...
March 2018: Brazilian Dental Journal
Flavia Kolling Marquezan, Patricia Maria Poli Kopper, Angela Isabel Dos Santos Dullius, Diego Machado Ardenghi, Renata Grazziotin-Soares
This study investigated the effect of blood-contamination on the push-out bond strength of BiodentineTM (BD) and MTA Angelus® (MTA-A) to root dentin over time. Twenty-five teeth were sectioned horizontally to obtain 120 root slices. The lumens were filled with MTA-A or BD: 60 for each cement (30 uncontaminated and 30 blood contaminated). Push out bond strength to dentin was assessed at 24 h (n=10), 7 days (n=10) and 28 days (n=10). Failure modes were classified as: cohesive, adhesive or mixed failure. Two-way ANOVA was used to investigate the interaction between blood contamination vs...
March 2018: Brazilian Dental Journal
Marlos Barbosa-Ribeiro, Rodrigo Arruda-Vasconcelos, Fabio L Fabretti, Emmanuel J N L Silva, Gustavo De-Deus, Brenda P F A Gomes
This study evaluated the amount of apically extruded debris after chemo-mechanical preparation (CMP) using positive and negative pressure irrigation systems [Conventional irrigation (CI) and EndoVac (EV)] in association with different irrigants [6% Sodium Hypochlorite (NaOCl), 2% Chlorhexidine gel + saline solution (CHXg + SS), 2% Chlorhexidine solution (CHXs) or Saline solution (SS)]. Eighty mandibular premolars with single root canals were selected and randomly assigned into 8 groups (n = 10) according to the irrigation system and the irrigant used during CMP: G1 (EV + NaOCl), G2 (EV + CHXg + SS), G3 (EV + CHXs), G4 (EV + SS), G5 (CI + NaOCl), G6 (CI + CHXg + SS), G7 (CI + CHXs) and G8 (CI + SS)...
March 2018: Brazilian Dental Journal
Jardel Francisco Mazzi-Chaves, Igor Bassi Ferreira Petean, Isadora Mello Vilarinho Soares, Alessandro Guimarães Salles, Lívia Azeredo Alves Antunes, Raquel Assed Bezerra Segato, Léa Assed Bezerra da Silva, Erika Calvano Küchler, Leonardo Santos Antunes, Manoel Damião Sousa-Neto
Persistent apical periodontitis (AP) is a situation involving an inflammatory and immune response caused mainly by anaerobic polymicrobial infection of the root canal system and the outcome and follow-up of the root canal treatment has been reported as intimately related to host response. The apical periodontitis repair might be associated with genetic polymorphisms. This study aimed to evaluate the association between HIF1A genetic polymorphisms (rs2301113 and rs2057482) with PAP in Brazilian patients. Subjects with at least 1 year of follow-up after root canal therapy (RCT) were recalled...
March 2018: Brazilian Dental Journal
Mariane Maffei Azuma, João Eduardo Gomes-Filho, Carolina de Barros Morais Cardoso, Camila Barbosa Pipa, Luis Gustavo Narciso, Suely Regina Mogami Bomfim, Rogério de Castilho Jacinto, Luciano Tavares Angelo Cintra
The aim of this study was to evaluate the influence of the prophylactic and therapeutic supplementation with omega 3 polyunsaturated fatty acids (w-3 PUFAs) on the lipid profile and periapical bone resorption in rats with apical periodontitis. Forty male rats were divided into groups: control rats (C), rats treated with w-3 PUFAs (C+O), rats with pulp exposure-induced apical periodontitis (AP), and rats with AP treated with w-3 PUFAs (AP+O). The administration of w-3 PUFAs was carried out orally once a day for 15 days before pulp exposure and, subsequently, for an additional 30 days after pulp exposure...
March 2018: Brazilian Dental Journal
Ricardo Armini Caldas, Carmem Silvia Costa Pfeifer, Ataís Bacchi, Mateus Bertolini Fernandes Dos Santos, Vagner Flávio Reginato, Rafael Leonardo Xediek Consani
The aim of this study was to evaluate by three-dimensional finite element analysis (3D-FEA) the biomechanics involved in bar-framework system for overdentures. The studied factors were latero-lateral angulation in the right implant (-10, -5, 0, 5 and 10 degrees), and different bar cross-sections (circular, Hader and oval) presenting horizontal misfits (50 or 150 µm) on the opposite implant. Positive angulation (5 and 10 degrees) for implant inclination to mesial position, negative angulation (-5 and -10 degrees) for distal position, and zero degree for parallel implants...
March 2018: Brazilian Dental Journal
Marina Azevedo Junqueira, Nayara Nery Oliveira Cunha, Fernanda Ferreira Caixeta, Nádia Carolina Teixeira Marques, Thais Marchini Oliveira, Ana Beatriz da Silveira Moretti, Leopoldo Cosme-Silva, Vivien Thiemy Sakai
The aim of this study was to evaluate the clinical, radiographic and histological outcomes of the dentin-pulp complex from primary molars after pulpotomy with mineral trioxide aggregate (MTA) and 15.5% ferric sulfate (FS). Thirty-one primary molars were randomly allocated into MTA or FS groups. Clinical and radiographic evaluations were recorded at 3-, 6-, 12- and 18-month follow-up. Teeth at the regular exfoliation period were extracted and processed for histological analysis. Clinical and radiographic data were tested by statistical analysis (p≤0...
March 2018: Brazilian Dental Journal
Xana Carolina de Pereira E Souza, Mauro Henrique Nogueira Guimarães Abreu, Vera Lúcia Silva Resende, Lia Silva de Castilho
This study investigated risk factors for tooth injuries in individuals from a dental clinical reference service for patients with special needs in Belo Horizonte, MG, Brazil. This is a retrospective cohort study that evaluated 493 dental charts of individuals with or without tooth injuries at their first dental appointment. The dependent variable was the time of occurrence of new dental traumatic injuries and was measured in months. Gender, age, International Code of Diseases, mother's education, mouth breathing, hyperkinesis, pacifier use, thumb sucking, psychotropic drug use, tooth injuries at the first dental examination, involuntary movements, open bite, having one or more siblings and reports of seizures were the covariates...
March 2018: Brazilian Dental Journal
Karla Rovaris, Polyane Mazucatto Queiroz, Karla de Faria Vasconcelos, Lívia Dos Santos Corpas, Bernardo Mattos da Silveira, Deborah Queiroz Freitas
X-ray microtomography (microCT) is a nondestructive technique used to assess bone morphometry. For an accurate analysis, it is necessary to segment the bone tissue from the background images, avoiding under- or overestimation of the real bone volume. Thus, segmentation methods for microCT can influence the accuracy of bone morphometry analysis. The purpose of this study was to compare two different image segmentation methods available on microCT software (subjective and objective) regarding to the human bone morphometric analysis...
March 2018: Brazilian Dental Journal
Luis Fernando Simoneti, Giovana Maria Weckwerth, Thiago José Dionísio, Elza Araujo Torres, Paulo Zupelari-Gonçalves, Adriana Maria Calvo, José Roberto Lauris, Flávio Cardoso Faria, Carlos Ferreira Santos
In view of the gastrointestinal problems generated by the ketoprofen use, the ketoprofen association with omeprazole is available on the market. However, this association efficacy in acute pain control has not been established. Bilateral extraction of lower third molars in similar positions is currently the most used model for the evaluation and investigation of the efficacy and pharmacological effects of new compounds for the treatment of acute postoperative pain. The randomized and crossover study consisted in evaluating the clinical efficacy of therapy performed by ketoprofen 100 mg (twice daily-b...
March 2018: Brazilian Dental Journal
João Lima Rodrigues, Patrícia Souza Rocha, Silvia Letícia de Souza Pardim, Ana Cláudia Vieira Machado, André Luis Faria-E-Silva, Paulo Isaías Seraidarian
This controlled randomized clinical trial evaluated the effect of associating at-home and in-office bleaching procedures on tooth sensitivity (TS) and bleaching effectiveness. Forty patients subjected to on session of in-office bleaching with 38% peroxide hydrogen. Subsequently, the patients were randomly allocated to receive a second session of in-office bleaching or to use a tray containing 10% carbamide peroxide delivered during 7 consecutive days. The worst TS score reported during or after each bleaching procedure was recorded using a verbal rating scale and TS risk (score different from 0) was calculated...
March 2018: Brazilian Dental Journal
Gabriela Cristina Santin, Alexandra Mussolino de Queiroz, Regina Guenka Palma-Dibb, Harley Francisco de Oliveira, Paulo Nelson Filho, Fábio Lourenço Romano
Patients undergoing radiotherapy treatment present more susceptibility to dental caries and the use of an orthodontic device increases this risk factor due to biofilm accumulation around the brackets. The objective of this study was to evaluate the shear bond strength to irradiated permanent teeth of orthodontic brackets bonded with conventional glass ionomer cement and resin-modified glass ionomer cement due to the fluoride release capacity of these materials. Ninety prepared human premolars were divided into 6 groups (n=15), according to the bonding material and use or not of radiation: CR: Transbond XT composite resin; RMGIC: Fuji Ortho LC conventional glass ionomer cement; GIC: Ketac Cem Easymix resin-modified glass ionomer cement...
March 2018: Brazilian Dental Journal
Andréa Vaz Braga Pintor, Rodrigo Figueiredo de Brito Resende, Adriana Terezinha Novelino Neves, Gutemberg Gomes Alves, Paulo G Coelho, José Mauro Granjeiro, Monica Diuana Calasans-Maia
This study evaluated comparatively two configurations (powder and putty) of a composite biomaterial based on PLGA (Poly(lactide-co-glycolide)/nanoescale hydroxyapatite (ReOss®, Intra-Lock International) through microscopic morphology, in vitro cytotoxicity, biocompatibility and in vivo response as a bone substitute. SEM and EDS characterized the biomaterials before/after grafting. Cytocompatibility was assessed with murine pre-osteoblasts. Osteoconductivity and biocompatibility were evaluated in White New Zealand rabbits...
March 2018: Brazilian Dental Journal
Sônia Saeger Meireles, Marilia Leão Goettems, Kaline Silva Castro, Fábio Correia Sampaio, Flávio Fernando Demarco
This study aimed to evaluate the effect on oral health-related quality of life (OHRQoL) of two treatment protocols for dental fluorosis in individuals enrolled in a randomized clinical trial. Seventy volunteers, who lived in a fluorosis endemic area in Brazil, and had at least four maxillary anterior teeth showing fluorosis with a Thylstrup and Fejerskov index from 1 to 7, were randomized into two treatment groups (n= 35): GI- enamel microabrasion; or GII- microabrasion associated with at-home bleaching. Microabrasion was performed using 37% phosphoric acid and pumice, and at-home tooth bleaching with 10% carbamide peroxide in a tray...
March 2018: Brazilian Dental Journal
Paulo Henrique Pereira Cavalcanti, Eduarda Helena Leandro Nascimento, Maria Luiza Dos Anjos Pontual, Andréa Dos Anjos Pontual, Priscylla Gonçalves Correia Leite de Marcelos, Danyel Elias da Cruz Perez, Flávia Maria de Moraes Ramos-Perez
Imaging exams have important role in diagnosis of cemento-osseous dysplasia (COD). Cone beam computed tomography (CBCT) stands out for allowing three-dimensional image evaluation. This study aimed to assess the prevalence of cases diagnosed as COD on CBCT scans, as well identify the main imaging features related to these lesions. An analysis was performed in a database containing 22,400 radiological reports, in which all cases showing some type of COD were initially selected. These CBCT exams were reevaluated to confirm the radiographic diagnosis and determine the prevalence and distribution of the types of COD with regard to gender, age and preferred location, while describing its most common imaging aspects...
January 2018: Brazilian Dental Journal
Tânia Mara da Silva, Virgílio Vilas Boas Fernandes, Rosemary Soares de Santana, Renata Marques de Melo Marinho, Márcia Carneiro Valera, Eduardo Bresciani
The aim of this study was to evaluate in vitro the influence of 20% glycolic ginger extract on the bond strength of glass-fiber post cemented with etch-and-rinse or self-etching resin cement. Forty-eight bovine roots were standardized (17±0.5 mm) and randomly divided into two groups, according to irrigant used during biomechanical preparation: NaOCl: 1% sodium hypochlorite and GEN: 20% glycolic ginger extract. Root canal was prepared and randomly assigned to one of two subgroups (n=12), according to luting protocol: self-etching (RelyX U200) and etch-and-rinse (RelyX ARC)...
January 2018: Brazilian Dental Journal
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