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Brazilian Dental Journal

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https://www.readbyqxmd.com/read/28301028/oral-health-related-quality-of-life-and-associated-factors-in-brazilian-adolescents
#1
Paulo Roberto Grafitti Colussi, Fernando Neves Hugo, Francisco Wilker Mustafa Gomes Muniz, Cassiano Kuchenbecker Rösing
This study aimed to assess the impact of oral health on the quality of life of adolescents. A cross-sectional study was performed with students from public and private schools from Passo Fundo, Brazil. All students were aged between 15 and 19 years old. The proportional random sample consisted of 736 adolescents from 20 schools. A structured questionnaire was applied, and an oral examination was performed, counting the number of teeth. Oral health-related quality of life was assessed by OHIP-14. Associations between quality of life and associated factors were analyzed...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301027/impact-of-malocclusion-on-oral-health-related-quality-of-life-of-8-12-years-old-schoolchildren-in-southern-brazil
#2
Roberto Cuchiara Simões, Marília Leão Goettems, Helena Silveira Schuch, Dione Dias Torriani, Flávio Fernando Demarco
The aim of this study was to estimate the impact of malocclusion on the oral health-related quality of life (OHRQoL) of schoolchildren aged 8-12 years old in Southern Brazil. A two-stage cluster procedure was used to select 1,199 children in 20 public and private schools in Pelotas/Brazil. Cross-sectional data was collected, consisting of a socioeconomic questionnaire to parents, children's interview and clinical oral examination. The clinical variables were obtained from clinical examination, and the Child Perceptions Questionnaire (CPQ) was assessed during children's interview...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301026/characterization-of-conventional-and-high-translucency-y-tzp-dental-ceramics-submitted-to-air-abrasion
#3
Bhenya Ottoni Tostes, Renato Bastos Guimarães, Jaime Dutra Noronha-Filho, Glauco Dos Santos Botelho, José Guilherme Antunes Guimarães, Eduardo Moreira da Silva
This study evaluated the effect of air-abrasion on t®m phase transformation, roughness, topography and the elemental composition of three Y-TZP (Yttria-stabilized tetragonal zirconia polycrystal) dental ceramics: two conventional (Lava Frame and IPS ZirCad) and one with high-translucency (Lava Plus). Plates obtained from sintered blocks of each ceramic were divided into four groups: AS (as-sintered); 30 (air-abrasion with 30 mm Si-coated Al2O3 particles); 50 (air-abrasion with 50 mm Al2O3 particles) and 150 (air-abrasion with 150 mm Al2O3 particles)...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301025/influence-of-cusp-inclination-and-type-of-retention-on-fracture-load-of-implant-supported-crowns
#4
Cibele Oliveira de Melo Rocha, Diogo Longhini, Rodrigo de Paula Pereira, João Neudenir Arioli
There are few informations about the influence of cusp inclination on the fracture strength of implant-supported crowns. The study aimed to evaluate the influence of cusp inclination and retention type on fracture load in implant-supported metal-ceramic single crowns. Sixty crowns were made, classified as cemented and screw-retained with screw access hole (SAH) sealed or not. Standard (33°) and reduced (20°) cusp inclinations were tested for each group (n=10). To support crowns of a mandibular second molar, analogs of external hexagon implants 5...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301024/comparison-of-cone-beam-computed-tomography-and-intraoral-radiography-in-detection-of-recurrent-caries-under-composite-restorations
#5
Shahin Kasraei, Abbas Shokri, Jalal Poorolajal, Samira Khajeh, Hamid Rahmani
Secondary caries is the most common cause of dental restoration failures. This study aimed to compare the diagnostic accuracy of conventional and digital intraoral radiography and cone beam computed tomography (CBCT) for detection of recurrent caries around composite restorations. mesio-occluso-distal (MOD) cavities were prepared using bur on 45 extracted sound human molar teeth. The teeth were divided into 3 groups. In the control group, cavities were restored with composite resin after etching and bonding (n=15)...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301023/optimizing-fixation-protocols-to-improve-molecular-analysis-from-ffpe-tissues
#6
Bruna Jalfim Maraschin, Viviane Palmeira da Silva, Leigha Rock, Huichen Sun, Fernanda Visioli, Pantelis Varvaki Rados, Miriam P Rosin
Most Departments of Pathology around the world have a considerable archive of formalin-fixed paraffin-embedded (FFPE) tissue suitable for molecular assessment. This article points out the potential DNA damage that may occur if basic steps are not followed during processing and storage of these samples. Furthermore, it hopes to establish parameters to optimize quality and quantity of DNA extracted from FFPE tissues.
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301022/use-of-an-alternate-light-source-to-detect-tooth-and-bone
#7
Geraldo Elias Miranda, Rodolfo Francisco Haltenhoff Melani, Luiz Francisquini, Eduardo Daruge
The aim of this study was to identify the combination of wavelength and filter that best detects tooth and bone, and to determine which biological materials (enamel, dental root or bone) have highest fluorescence intensity when exposed to an alternate light source (ALS). Tooth and bone samples were lighted with ALS and photographed. Adobe Photoshop™ and ImageJ™ softwares were used for image analysis. Data obtained by measuring the photograph pixels were subjected to analysis of variance. The mean values of significant effects were compared by the Tukey test...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301021/cytotoxic-effect-of-thymus-caramanicus-jalas-on-human-oral-epidermoid-carcinoma-kb-cells
#8
Reza Fekrazad, Mehrad Afzali, Hamzeh Pasban-Aliabadi, Saeed Esmaeili-Mahani, Maryam Aminizadeh, Ali Mostafavi
Identifying new chemotherapeutic agents with fewer side effects is a major concern for scientists today. Thymus caramanicus Jalas (Lamiaceae family) is one of the species of Thymus that grows wild in different regions of Iran. Traditionally, leaves of this plant are used in the treatment of diabetes, arthritis and cancer. Here was investigated the cytotoxic property of Thymus caramanicus essential oil and extract in human oral epidermoid carcinoma KB cells. Cell viability was measured by MTT and neutral red assays...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301020/cytotoxicity-and-bioactivity-of-calcium-silicate-cements-combined-with-niobium-oxide-in-different-cell-lines
#9
Leticia Boldrin Mestieri, Ana Lívia Gomes-Cornélio, Elisandra Márcia Rodrigues, Gisele Faria, Juliane Maria Guerreiro-Tanomaru, Mário Tanomaru-Filho
The aim of this study was to evaluate the cytotoxicity and bioactivity of calcium silicate-based cements combined with niobium oxide (Nb2O5) micro and nanoparticles, comparing the response in different cell lines. This evaluation used four cell lines: two primary cultures (human dental pulp cells - hDPCs and human dental follicle cells - hDFCs) and two immortalized cultures (human osteoblast-like cells - Saos-2 and mouse periodontal ligament cells - mPDL). The tested materials were: White Portland Cement (PC), mineral trioxide aggregate (MTA), white Portland cement combined with microparticles (PC/Nb2O5µ) or nanoparticles (PC/Nb2O5n) of niobium oxide (Nb2O5)...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301019/cytotoxicity-of-new-calcium-aluminate-cement-endobinder-containing-different-radiopacifiers
#10
Claudia Huck, Hernane da Silva Barud, Fernanda Gonçalves Basso, Carlos Alberto de Souza Costa, Josimeri Hebling, Lucas da Fonseca Roberti Garcia
This study aimed to evaluate the cytotoxicity of a calcium aluminate cement (EndoBinder) containing different radiopacifiers, Bi2O3, ZnO or ZrO2, compared with Mineral Trioxide Aggregate (MTA). According to ISO 10993-12:2012 (E) recommendations, 0.2 g of each cement were applied in transwell inserts and placed in 24-well culture plates containing 1 mL of culture medium (DMEM). After 24 h of incubation, the extracts (DMEM containing components released from the cements) were applied to immortalized odontoblast-like MDPC-23 cells...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301018/physicochemical-properties-and-dentin-bond-strength-of-a-tricalcium-silicate-based-retrograde-material
#11
Camila de Paula Telles Pires Lucas, Raqueli Viapiana, Roberta Bosso-Martelo, Juliane Maria Guerreiro-Tanomaru, Josette Camilleri, Mário Tanomaru-Filho
The aim of this study was to evaluate the physicochemical properties and the apical dentin bond strength of the tricalcium silicate-based Biodentine in comparison to white MTA and zinc oxide eugenol-based cement (ZOE). Setting time and radiopacity were evaluated according to ISO 6876:2012 specification. Final setting time, compressive strength and pH were also assessed. Material's bond strength to the apical root canal dentin was measured by the push-out assay. Data were analyzed by ANOVA and Tukey-Krammer post-hoc test...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301017/intracanal-irrigating-solutions-prior-to-calcium-hydroxide-medication-and-its-effects-on-root-dentin-strength
#12
Leila Clarisse Hillesheim, Juliara Bellina Hoffmann, Daniela Peressoni Vieira Schuldt, Maybell Tedesco, Eduardo Antunes Bortoluzzi, Cleonice Silveira Teixeira
The aim of this study was to assess the effects of intracanal irrigation with sodium hypochlorite (NaOCl) and ethylenediaminetetracetic acid (EDTA) prior to calcium hydroxide medication on the compressive strength of root dentin. Forty-eight roots with single and straight canals were instrumented with a crown-down technique using Flexofile files and Gates Glidden burs, under 0.9% sodium chloride (NaCl) irrigation. Root canals were randomly separated into 4 groups (n=12), according to the irrigating solution: Control Group, 0...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301016/deflection-and-flexural-strength-effects-on-the-roughness-of-aesthetic-coated-orthodontic-wires
#13
Cibele Gonçalves de Albuquerque, Américo Bortolazzo Correr, Giovana Cherubini Venezian, Milton Santamaria, Carlos Alberto Tubel, Silvia Amélia Scudeler Vedovello
The aim was to evaluate the flexural strength and the effects of deflection on the surface roughness of esthetic orthodontic wires. The sample consisted of 70 archwire 0.014-inch: polytetrafluorethylene (PTFE)-coated Nickel-Titanium (Niti) archwires (Titanol Cosmetic-TC, Flexy Super Elastic Esthetic-FSE, esthetic Nickel Titanium Wire-ANT); epoxy resin-coated Niti archwires (Spectra-S, Niticosmetic-TEC); gold and rhodium coated Niti (Sentalloy-STC) and a control group (superelastic Niti (Nitinol-NS). The initial roughness was evaluated with a rugosimeter...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301015/influence-of-photoinitiator-system-on-physical-chemical-properties-of-experimental-self-adhesive-composites
#14
Marcus Vinicius Loureiro Bertolo, Rita de Cássia Martins Moraes, Carmem Pfeifer, Vinícius Esteves Salgado, Ana Rosa Costa Correr, Luis Felipe J Schneider
The aim of this study was to determine the influence of photoinitiator systems on physical-chemical properties of flowable composites. Conventional (CFC), composed by bisphenol-glycidyl dimethacrylate (BisGMA)+triethyleneglycol dimethacrylate (TEGDMA), and self-adhesive (SAFC), composed by BisGMA+TEDGMA+bis{2-(methacryloyloxy) ethyl} phosphate (2MP), flowable composites were developed. Five photoinitiator systems were tested: camphorquinone (CQ), ethyl-4-dimethylaminobenzoate (EDMAB), diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide (TPO), phenylbis (2,4,6-trimethylbenzoyl)phosphine oxide (BAPO), CQ+EDMAB+TPO and CQ+EDMAB+BAPO...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301014/evaluation-of-surface-roughness-and-bacterial-adhesion-on-tooth-enamel-irradiated-with-high-intensity-lasers
#15
Ruchele D Nogueira, Camilla B Silva, Cesar P Lepri, Regina Guenka Palma-Dibb, Vinicius R Geraldo-Martins
The aim was to evaluate the surface roughness and bacterial adhesion on enamel irradiated with high intensity lasers, associated or not to a fluoride varnish. Eighty fragments of bovine enamel were equally divided in 8 groups (n=10). Group 1 was not treated and Group 2 received only a 5% fluoride varnish application. The other groups were irradiated with an Er:Cr:YSGG (8.92 J/cm2), an Nd:YAG (84.9 J/cm2) and a diode laser (199.04 J/cm2), associated or not to a 5% fluoride varnish. The surface roughness was measured before and after treatments...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301013/influence-of-different-dentin-substrate-caries-affected-caries-infected-sound-on-long-term-%C3%AE-tbs
#16
Ana Rosa Costa, Franklin Garcia-Godoy, Lourenço Correr-Sobrinho, Lucas Zago Naves, Luís Henrique Araújo Raposo, Fabíola Galbiatti de Carvalho, Mário Alexandre Coelho Sinhoreti, Regina Maria Puppin-Rontani
The aim of this study was to evaluate the μTBS in different dentin substrates and water-storage periods. Twenty-four dentin blocks obtained from sound third molars were randomly divided into 3 groups: Sound dentin (Sd), Caries-affected dentin (Ca) and Caries-infected dentin (Ci). Dentin blocks from Ca and Ci groups were subjected to artificial caries development (S. mutans biofilm). The softest carious tissue was removed using spherical drills under visual inspection with Caries Detector solution (Ca group)...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301012/evaluation-of-eye-protection-filters-used-with-broad-spectrum-and-conventional-led-curing-lights
#17
Carlos José Soares, Monise de Paula Rodrigues, Andomar Bruno Fernandes Vilela, Erick René Cerda Rizo, Lorraine Braga Ferreira, Marcelo Giannini, Richard Bengt Price
The high irradiance and the different emission spectra from contemporary light curing units (LCU) may cause ocular damage. This study evaluated the ability of 15 eye protection filters: 2 glasses, 1 paddle design, and 12 dedicated filters to block out harmful light from a monowave (HP-3M ESPE) and a broad-spectrum (Valo, Ultradent) LED LCU. Using the anterior sensor in the MARC-Patient Simulator (BlueLight Analytics) the irradiance that was delivered through different eye protection filters was measured three times...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301011/research-reporting-guidelines-in-dentistry-a-survey-of-editors
#18
Rafael Sarkis-Onofre, Maximiliano Sérgio Cenci, David Moher, Tatiana Pereira-Cenci
The use of reporting guidelines has an important role in the development of health research, improving the quality and precision of the publications. This study evaluated how dental journals use reporting guidelines. All editors of dental journals registered on the 2013 Journal Citation Reports list (n=81) were invited to participate. The data were collected by a self-reported web-based questionnaire. Information about the profile of journal/editor and on the use of reporting guidelines by journals was gathered...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301010/effect-of-sonic-vibrations-on-bond-strength-of-fiberglass-posts-bonded-to-root-dentin
#19
Amanda Mahammad Mushashe, Rodrigo Otavio Jatahy Ferreira do Amaral, Carlos Eduardo Edwards Rezende, Flares Baratto Filho, Leonardo Fernandes da Cunha, Carla Castiglia Gonzaga
Sonic vibrations may improve the bond strength and durability of fiberglass posts by improving adhesive penetration into dentin as well as the cement flow. The objective of this study was to evaluate the effect of sonic vibrations on the bond strength between fiberglass posts and root dentin using the pull-out test. Bovine roots were endodontically treated and divided randomly into four groups (n=12): Group C - conventional cementation (control); Group SA - sonic vibration (Smart Sonic Device, FGM) of the adhesive system and conventional post accommodation; SP group - conventional adhesive application and sonic vibration of the post during accommodation; and SASP - sonic vibration of the system adhesive and the post during accommodation...
January 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28301009/survival-and-factors-associated-with-failure-of-pulpectomies-performed-in-primary-teeth-by-dental-students
#20
Juliane Priscila Brustolin, Adriela Azevedo Souza Mariath, Thiago Machado Ardenghi, Luciano Casagrande
Although endodontic treatment is widely recommended for compromised dental pulp, there is no information regarding the factors associated with failures in primary teeth. The aim of this study was to evaluate the survival and factors associated with failure of pulpectomies performed in primary teeth by dental students. The sample comprised patients treated at a University Dental Service and required endodontic treatment in primary teeth. The study investigated treatment-related variables and patient factors potentially associated with treatment failure...
January 2017: Brazilian Dental Journal
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