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Brazilian Oral Research

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https://www.readbyqxmd.com/read/28146221/osteogenic-potential-of-periodontal-ligament-stem-cells-are-unaffected-after-exposure-to-lipopolysaccharides
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
https://www.readbyqxmd.com/read/28099578/il-6-and-il-10-gene-polymorphisms-in-patients-with-aggressive-periodontitis-effects-on-gcf-serum-and-clinic-parameters
#7
Emine Pirim Gorgun, Hulya Toker, Ertan Mahir Korkmaz, Omer Poyraz
Genetic variations observed in cytokines affect periodontitis susceptibility. The aim of this study was to investigate interleukin(IL)-6(-174) and IL-10(-597) gene polymorphisms in generalized aggressive periodontitis (GAgP) patients. Also, we aimed to evaluate the effects of IL-6 and IL-10 gene polymorphisms on the clinical outcomes of non-surgical periodontal therapy and cytokine levels in gingival crevicular fluid(GCF) and serum. Fifty-three patients with GAgP and 50 periodontally healthy individuals were included in this study...
January 16, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28099577/effects-of-periodontal-treatment-on-primary-sj%C3%A8-gren-s-syndrome-symptoms
#8
Lucas Macedo Batitucci Ambrósio, Emanuel da Silva Rovai, Bruno Nunes de França, Danilo Andrés Balzarini, Ieda Santos Abreu, Sheyla Batista Bologna Lopes, Thaís Borguezan Nunes, Silvia Vanessa Lourenço, Sandra Gofinet Pasoto, Luciana Saraiva, Marinella Holzhausen
The aim of this longitudinal prospective study was to evaluate the effects of periodontal treatment on the clinical, microbiological and immunological periodontal parameters, and on the systemic activity (ESSDAI) and subjective (ESSPRI) indexes in patients with primary Sjögren's Syndrome (pSS). Twenty-eight female patients were divided into four groups: pSS patients with or without chronic periodontitis (SCP, SC, respectively), and systemically healthy patients with or without chronic periodontitis (CP, C, respectively)...
January 16, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28099576/bpi-fold-bpif-containing-plunc-protein-expression-in-human-fetal-major-and-minor-salivary-glands
#9
Daniel Berretta Moreira Alves, Lynne Bingle, Colin David Bingle, Silvia Vanessa Lourenço, Andréia Aparecida Silva, Débora Lima Pereira, Pablo Agustin Vargas
The aim of this study was to determine expression, not previously described, of PLUNC (palate, lung, and nasal epithelium clone) (BPI-fold containing) proteins in major and minor salivary glands from very early fetal tissue to the end of the second trimester and thus gain further insight into the function of these proteins. Early fetal heads, and major and minor salivary glands were collected retrospectively and glands were classified according to morphodifferentiation stage. Expression of BPI-fold containing proteins was localized through immunohistochemistry...
January 16, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28076499/association-between-the-clinical-severity-of-oral-lichen-planus-and-anti-tpo-level-in-thyroid-patients
#10
Milad Alikhani, Parichehr Ghalaiani, Elham Askariyan, Zahra Ahmadi Khunsaraki, Atefeh Tavangar, Aliasghar Naderi
This study considered a possible relationship between the severity of oral lichen planus (OLP), serum anti-TPO autoantibodies (TPOAb) titer and thyroid disease in OLP patients. Forty-six OLP patients with positive TPOAb results (> 35 IU/ml) who had also been diagnosed with thyroid disease were included in the study group. The control group consisted of 46OLP patients with no thyroid disease. The study and control groups (92) were divided to two subgroups of erosive OLP (EOLP) and non-erosive OLP (NEOLP)...
January 5, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28076498/the-efficacy-of-low-level-940-nm-laser-therapy-with-different-energy-intensities-on-bone-healing
#11
Kerem Turgut Atasoy, Yavuz Tolga Korkmaz, Ersan Odaci, Hatice Hanci
The aim of this study was to evaluate the efficacy of low-level 940 nm laser therapy with energy intensities of 5, 10 and 20 J/cm2 on bone healing in an animal model. A total of 48 female adult Wistar rats underwent surgery to create bone defects in the right tibias. Low-level laser therapy (LLLT) was applied immediately after surgery and on post-operative days 2, 4, 6, 8, 10 and 12 in three study groups with energy intensities of 5 J/cm2, 10 J/cm2 and 20 J/cm2 using a 940 nm Gallium-Aluminium-Arsenide (Ga-Al-As) laser, while one control group underwent only the tibia defect surgery...
January 5, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28076497/one-year-aging-effects-on-microtensile-bond-strengths-of-composite-and-repairs-with-different-surface-treatments
#12
Marcela Oliveira de Souza, Vicente Castelo Branco Leitune, Stéfani Becker Rodrigues, Susana Maria Werner Samuel, Fabrício Mezzomo Collares
The present study aimed to evaluate effects of different surface treatments and aging of composite cylinders on bond strength of composite resin repair. Thirty-two composite cylinders were produced and divided into four groups according to type of surface treatment and storage time of composite cylinder and repair. Cylinder surface of control group (Gcontrol) received no treatment before composite repair. Other groups were sandblasted with aluminum oxide (GAl2O3), followed by silane (GAl2O3sil) or adhesive (GAl2O3ad)...
January 5, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28076496/evaluation-of-dentin-hypersensitivity-treatment-with-glass-ionomer-cements-a-randomized-clinical-trial
#13
Marina de Matos Madruga, Adriana Fernandes da Silva, Wellington Luiz de Oliveira da Rosa, Evandro Piva, Rafael Guerra Lund
A randomized, double-blind, split-mouth clinical trial was performed compared the desensitizing efficacy of the resin-modified glass ionomer cement (GIC) ClinproTM XT (3M ESPE, Minnesota, USA) and the conventional GIC Vidrion R (SS White, Gloucester, UK) in a 6-month follow-up. Subjects were required to have at least two teeth with dentin hypersensitivity. Teeth were divided at random into 2 groups, one group received Clinpro XT and the other conventional GIC Vidrion R. Treatments were assessed by tactile and air blast tests using Visual Analogue Scale (VAS) at baseline, after 20 minutes, and at 7, 15, 21, 30, 90 and 180 days post-treatment...
January 5, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28076495/antimicrobial-activity-of-ozone-and-naf-chlorhexidine-on-early-childhood-caries
#14
Marcos Ximenes, Mariane Cardoso, Fernando Astorga, Roland Arnold, Luiz André Pimenta, Ricardo de Sousa Viera
An early childhood carie (ECC) is an extremely destructive form of tooth decay. The aim of this study was to investigate the action of ozone (O3), and the association of sodium fluoride (NaF) with chlorhexidine (CHX) on bacteria related to ECC. Overnight culture of the bacteria was performed. On exponential phase the suspension was adjusted (101-108 CFU/mL). A drop (10μL) of each concentration of bacteria was applied on sheep blood agar plates and treated with O3 (2, 20, 200, and 2,000 ppm); after 18 hours, recovery analysis of CFU verified the reduction of bacterial activity...
January 5, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28076494/accuracy-of-mandibular-measurements-of-sexual-dimorphism-using-stabilizer-equipment
#15
Thais Torralbo Lopez, Edgard Michel-Crosato, Eduardo de Novaes Benedicto, Luiz Airton Saavedra de Paiva, Diogo Cesar Borges Silva, Maria Gabriela Haye Biazevic
The objective of this investigation was to compare the accuracy of mandibular measurements using a stabilizer (MS) with gold standard computed tomography (GS) images. Sixty mandibles were studied. Werth TomoScope HV Compact® was used to obtain CT images (GS), and the MS was also used. Analysis of the CT scans was performed using the VG Studio Max software® (Volume Graphics GmbH, Heidelberg, Germany), and MS was used after the proper positioning of the mandible. Descriptive and paired t test measures were used, and a ROC curve was calculated, as well as sensibility and specificity...
January 5, 2017: Brazilian Oral Research
https://www.readbyqxmd.com/read/28001248/effect-of-lectin-scll-on-fibroblasts-stimulated-with-lps-an-in-vitro-study
#16
Manuella Verdinelli de Paula Reis, Camilla Christian Gomes Moura, Marcus Vinicius da Silva, Maria Aparecida de Souza, Priscilla Barbosa Ferreira Soares, Carlos José Soares
The lectin (ScLL) extracted from the Synadenium carinatum plant has been evaluated as an immunomodulator in diseases such as asthma, neosporosis and leishmaniasis. However, it has not yet been evaluated in the oral cavity. This study evaluated the effect of ScLL on viability, proliferation and release of IL-10 in human gingival fibroblasts (HGF) stimulated with lipopolysaccharide (LPS). HGF were stimulated with LPS 1 µg/ml and treated with ScLL in concentrations of 10, 5 and 2 µg/ml for 1 and 5 h, and evaluated by flow cytometry for viability, apoptosis (initial/advanced) and necrosis...
December 22, 2016: Brazilian Oral Research
https://www.readbyqxmd.com/read/28001247/impact-of-a-dental-care-program-on-the-quality-of-life-of-children-with-and-without-caries
#17
Janice Simpson de Paula, Karin Luciana Migliato Sarracini, Gláucia Maria Bovi Ambrosano, Antônio Carlos Pereira, Marcelo de Castro Meneghim, Fábio Luiz Mialhe
The aim of the present study was to evaluate the long-term effects of the caries treatment provided by a dental care program on changes in schoolchildren's OHRQoL. A one-year follow-up was conducted with a sample of 372 children aged 8 to 10 years which were clinically examined and divided into two matched groups according to their caries experience: dental treatment group (DTG) and group without caries (GWC). Both groups were assessed three times (at baseline, at 4 weeks, and at 1 year) using the Child Perceptions Questionnaire (CPQ8-10)...
December 22, 2016: Brazilian Oral Research
https://www.readbyqxmd.com/read/28001246/validation-and-invariance-of-the-dental-anxiety-scale-in-a-brazilian-sample
#18
Fernanda Salloume Sampaio Bonafé, Juliana Alvares Duarte Bonini Campos
The aim of this study was to evaluate the properties of the Dental Anxiety Scale (DAS) when applied to Brazilian adults and to test its invariance across independent samples and different sociodemographic groups. Sociodemographic data, reports on previous unpleasant dental experiences and DAS responses were collected through telephone interviews. Metric properties of the one and two-factor models were evaluated using confirmatory factor analysis. The analysis included the chi-square ratio divided by degrees of freedom (χ2/df), the comparative fit index (CFI), the goodness of fit index (GFI) and the root mean square error of approximation (RMSEA)...
December 22, 2016: Brazilian Oral Research
https://www.readbyqxmd.com/read/28001245/the-effect-of-standardised-implantoplasty-protocol-on-titanium-surface-roughness-an-in-vitro-study
#19
Andrew Tawse-Smith, Akash Kota, Yathen Jayaweera, Wendy Jansen van Vuuren, Sunyoung Ma
To analyse the changes of surface characteristics of machined and moderately roughened titanium disks following a standardised implantoplasty protocol. Forty titanium discs (machined: n = 20; moderately roughened: n = 20) were instrumented with one half of each disc maintained as the control (non-instrumented). The standardised implantoplasty protocol was carried out using a custom jig with the sequential change of burs: 1) Regular grit diamond [10s], 2) Super-fine grit diamond [10s], 3) Brownie(tm) silicone polisher [15s], 4) Greenie(tm) silicone polisher [15s]...
December 22, 2016: Brazilian Oral Research
https://www.readbyqxmd.com/read/28001244/survival-analysis-of-banding-and-bonding-molar-tubes-in-adult-patients-over-a-12-month-period-a-split-mouth-randomized-clinical-trial
#20
Valéria Jacques Oeiras, Valéria Assis Almeida E Silva, Leidiana Aguiar Azevedo, Vanessa Soares Lobato, David Normando
This split-mouth randomized clinical trial aimed to compare the survival rate of bonding and banding molar tubes in adult orthodontic patients. Eligibility criteria included adults (aged >18 years), no active caries, restorations, or fractures in the upper and lower molars. The main outcome was any type of first-time failure in molar tubes. A computer-generated randomization scheme was used in a 1:1 ratio. The survival rate was estimated for 32 adult patients, in whom a tube was bonded to a molar tooth using composite resin on one side and a band was cemented with glass ionomer onto the same tooth in the contralateral arch...
December 22, 2016: Brazilian Oral Research
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