bluuebunny/crossref_metadata_2025 huggingface dataset:
GAGAL JANTUNG KIRI DAN HIPERTENSI PULMONAL
Authors: Sargowo Djanggan
Published: March 2017

In patients with left heart failure, pulmonary hypertension and right ventricular dysfunction is a common condition and has important implications in the development of disease, disability and death, so it required special attention. Pulmonary hypertension is the most common form with approximately 65-80% of cases. Although today is already highly developed understanding of the pathophysiology and clinical assessment, as well as setting the hemodynamic definition and classification of pulmonary hypertension in left heart failure, but the interrelation hemodynamics in pulmonary hypertension combination of pre- and post-capillary is still very complex, and there is no evidence-based recommendations the handling of pulmonary hypertension is left heart failure. Here, we will discuss the prevalence and significance of pulmonary hypertension and cardiac dysfunction Right in patients with both heart failure with ejection fraction decreased, as well as heart failure with ejection fraction, as well as provides an overview of the pathophysiology of the complex due to the interaction of cardiopulmonary left heart failure, which can supports the evolution of the phenotype of the left ventricle into the right ventricle phenotype through the travel history of heart failure. Next, we will discuss fenoitp pulmonary hypertension by combining the clinical context, the assessment of non-invasive and invasive hemodynamic variables in a structured diagnostic assessment.
MALARIA PADA KEHAMILAN DAN KONSEKUENSINYA PADA IBU DAN JANIN
Authors: Rahmah Zainabur
Published: March 2017

Malaria is an infectious disease remains a major health problem in the world. Malaria attacks without differentiating individual age and sex of pregnant women are no exception. Pregnant women have a risk of malaria by Plasmodium parasites is more severe in comparison with non-pregnant women. When a pregnancy will occur immunosuppression both humoral and cellular purpose of this paper is to discuss the mechanism of occurrence of malaria in pregnancy and its consequences on the mother and fetus. Parasite adhesion receptors Chondroitin Sulfate A (CSA) and Hyaluronic Acid (HA) in the placenta can trigger an inflammatory process involving the secretion of cytokines. Inflammatory component that appears after the accumulation of parasites in the placenta is associated with immune pathology in the Pregnancy-Associated Malaria (PAM), such as thickening of the membrane cytotrophoblasts that disrupt blood flow, inhibiting the transfer of IgG across the placenta and the exchange of nutrients from mother to fetus, causing lesions in the placenta. Malaria infection during pregnancy is a process of mediation by protein cytoadherence in Plasmodium falciparum erythrocyte membrane protein-1 (PfEMP-1) encoded by genes that bind to receptors on Var2CSA this causes placental sequestration of infected erythrocytes on endothelial cells resulting in anemia in pregnant while on fetus causes low birth weight, premature birth and stillbirth.
Apresentação
Authors: Groppo Luíz Antonio
Published: March 2017

Neste 2o semestre de 2010, a Revista de Ciências da Educação des-taca o dossiê “Movimentos sociais e educação”, articulado pelos Profs.Drs. Marcos Francisco Martins e Viviane Melo de Mendonça, ambos daUniversidade Federal de São Carlos (UFSCar), campus Sorocaba. Traz,também, diversos artigos versando sobre outros aspectos da linha edito-rial desta Revista.
Aspectos históricos e as propostas educacionais do movimento dos trabalhadores rurais sem-terra no Brasil contemporâneo – um compromisso político com as transformações sociais!
Authors: Bauer Carlos
Published: March 2017

Este trabalho tem como finalidade lançar um olhar crítico sobre umdos principais organismos políticos criados pelos trabalhadores ruraisbrasileiros, no caso o Movimento dos Trabalhadores Rurais Sem-Terra(MST). O MST é estudado no desenvolvimento dos seus princípioseducacionais que incluem o trabalho de formação e de conscientizaçãopolítica, tendo como marco histórico a luta contra a ditadura militar e a democratização do Estado em nosso país. De fato, o MST vemocupando um lugar de destaque, colocando-se como um dos legítimosinterlocutores dos setores populares no processo de disputa da hege-monia política em curso na sociedade brasileira. Esse reconhecimentonos parece relevante, principalmente se levarmos em consideração osaspectos e os princípios educativos dos movimentos sociais. Assim,estamos preocupados em estudar, numa dimensão histórica e política,o seu papel na construção da contra-hegemonia cultural e, também,reunir subsídios que permitam aos interessados refletir sobre as rela-ções entre o MST e as fecundas aspirações que nutrem pela educação.
Microtensile bond strength of restorative composite bonded with self-adhesive resin cements to enamel and dentin
Authors: Al-Saleh Mohammed , El-Mowafy Omar
Published: March 2017

PURPOSE: To determine the microtensile bond strength (µTBS) of composite restorations when bonded with self-adhesive resin-cements. METHODS: Thirty caries-free extracted molars were sterilized, and divided into 5 equal groups according to adhesive used: SBMP (Scotch-Bond-Multipurpose, total-etch 3-step adhesive, 3M/ESPE), PAN (PanaviaF-2.0, resin-cement with self-etch primer, Kuraray), RXU (RelyX-Unicem, self-adhesive resin-cement, 3M/ESPE), BRZ (Breeze, self-adhesive resin-cement, Pentron) and MON (Monocem, self-adhesive resin-cement, Shofu). Each group was divided into 2 subgroups (dentin or enamel). Bonding agents, used according to manufacturers’ directions, or a thin layer of resin cement was applied onto teeth flat surfaces. Six mm-thick Filtek-Z250 (3M/ESPE) composite build up was made in three increments. Teeth were sectioned to obtain rectangular specimens which were subjected to tensile force until failure. Specimens were subjected to 1,000 thermo-cycles between 5oC-55°C. Means and standard deviation (SD) were calculated and statistically-analyzed with ANOVA and Tukey’s t-test. Specimens’ failure modes were reported. RESULTS: SBMP showed the highest µTBS results with enamel (24.6(6.1) MPa), PAN showed high µTBS with enamel (12.1(3.9)MPa) and dentin (11.6(4.7)MPa) compared to the other self-adhesive cements. Failure modes were adhesive and mixed for self-adhesive resin-cements. MON subgroups and BRZ enamel subgroup underwent premature failure. CONCLUSION: self-adhesive resin-cements showed low µTBS compared to SBMP.
Influence of storage time in water on the integrity of adhesive interface in resin composite restorations
Authors: Xavier Tathy Aparecida , Medeiros Igor Studart , Rosa Ecinele Franscisca , Ballester Rafael Yagüe
Published: March 2017

When immersed in oral fluids, water absorption by the restorative resin composite material can occur, which is identified by some researchers as one of the causes of loss of aesthetic features and reduction of mechanical properties over time. On the other hand, some authors have suggested that the fluids sorption may contribute to the reduction of shrinkage stress generated at the adhesive interface and reduce the width of gaps. The aim of this study was verifying if the storage time in water of restorations carried out with different filling techniques could influence on the integrity of tooth-restoration adhesive interface. Eighteen cavities were built in bovine incisors and they were divided into 3 groups after the adhesive procedure: group B (“Bulk”) received one single increment of light-cured resin composite; group I (“Increments”) received the same composite in three oblique increments; and the group B+S (“Bulk + Self-cured resin composite”). The last one firstly received a flowable, self-cured resin composite, and then, it was inserted one single increment of light-cured composite. After 48 h of storage, the restorations were sliced, the first measurement was accomplished, and the analysis of the adhesive interface was made each 30 days over nine months of immersion in water. The results were subjected to a split-plot analysis of variance and Tukey’s test. It was not verified significant influence of immersion time in water on the gap width, or regular increase or decrease of percentage interface free of gaps over time for any of three filling techniques. Some hypothesis could explain this occurrence, such as gain of mass without significant increase in the volume; the expansion of restoration in directions that did not contributed to the gaps closure; and the simultaneous occurrence of hygroscopic expansion and hydrolytic degradation of the resin processes.
Effect of different light sources on degree of conversion, hardness and plasticization of a composite
Authors: Barreto Bruno de Castro Ferreira , Catelan Anderson , Okida Ricardo Coelho , Gonçalves Gisele Fernanda , Silva Gisele Rodrigues da , Santos Paulo Henrique dos , Xavier Tathy Aparecida , Aguiar Flávio Henrique Baggio , Soares Carlos José
Published: March 2017

Clinical performance of composite resins depends largely on their mechanical properties, and those are influenced by several factors, such as the light-curing mode. The purpose of this study was to evaluate the influence of different light sources on degree of conversion (DC), Knoop hardness (KHN) and plasticization (P) of a composite resin. Disc-shaped specimens (5 x 2 mm) of Esthet-X (Dentsply) methacrylate-based microhybrid composite were light-cured using quartz-tungsten-halogen (QTH) Optilight Plus (Gnatus) or light-emitting diode (LED) Ultraled (Dabi Atlante) curing units at 400 and 340 mW/cm2 of irradiance, respectively. After 24 h, absorption spectra of composite were obtained using Nexus 670 (Nicolet) FT-IR spectrometer in order to calculate the DC. The KHN was measured in the HMV-2000 (Shimadzu) microhardness tester under 50 g loads for 15 s, and P was evaluated by percentage reduction of hardness after 24 h of alcohol storage. Data were subjected to t-Student test (alpha = 0.05). QTH device showed lower P and higher KHN than LED (p < 0.05), and no difference between the light-curing units was found for DC (p > 0.05). The halogen-curing unit with higher irradiance promoted higher KHN and lower softening in alcohol than LED.
The effect of type post, crown, and ferrule presence on stress distribution of maxillary central incisors with weakened roots: Finite Element Analysis
Authors: Santos-Filho Paulo César de Freitas , Verissimo Crisnicaw , Queiroz Cristhiane Leão , Saltarelo Rebeca Carniello , Soares Carlos José , Barreto Bruno de Castro Ferreira
Published: March 2017

The aim of this study was to evaluate the biomechanical behavior, by means FEA, of maxillary central incisor with weakened roots restored with different posts, crowns and ferrule presence. A digital image of an intact maxillary central incisor section plane around the alveolar bone was obtained in order to build the model of sound tooth. A sound tooth and eight two-dimensional numerical models were generated from the protocol of image processing. The studied factors were: crown type - metal-ceramic crown (MC) and alumina-reinforced ceramic (CC); post type - glass fiber post (GFP) and cast post and core (CPC); and ferrule - absence of ferrule (AFE) and 2,0 mm ferrule (FE2). A 2N static and oblique load with a 135° inclination to the tooth longitudinal axis was applied at the level of palatal surface of the crown. The displacement was restricted and stress of tensile and compression within the tooth structure was recorded. Cast post and core models concentrated stresses in post dentin interface and glass fiber post models had homogeneous stresses distribution within the root dentin similar to sound tooth. The restorative complex GFP-CC concentrated higher stress in coping than GFP-MC, both models with or without ferrule. The ferrule presence improved the stress distribution regardless of the crown and post types. Therefore, cast post-and-cores concentrate too much stresses within a root dentin and post interface; glass fiber post has more homogeneous stress distribution in dentin than cast post-and-cores; the presence of 2 mm ferrule improves the mechanical behavior.
Effect of the framework material on the final color of all-ceramic restorations
Authors: Borba Márcia , Sonza Queli Nunes , Della Bona Álvaro
Published: March 2017

OBJECTIVES: to evaluate the effect of the type of ceramic framework material on the final color of all-ceramic restorations. The hypotheses tested were: (1) the final color of the restoration is different than the porcelain shade selected initially to veneer the framework and (2) different framework materials result in different colors of all-ceramic restorations. METHODS: Steel models simulating abutment teeth were used to design all-ceramic fixed partial dentures (FPDs). The FPDs were produced using three different framework materials (n=8): (YZ) yttria partially stabilized tetragonal zirconia polycrystal (LAVA, 3M); (IZ) glass-infiltrated alumina/zirconia (Vita In-Ceram Zirconia); (AL) polycrystalline alumina (Vita In-Ceram AL). Each framework was veneered with the recommended porcelain, VM9 for YZ and VM7 for IZ and AL groups (Vita). The porcelain shade used was 2M2. A uniform thickness of 1.2 mm of porcelain was applied around the retainers. The color difference (ΔE) and lightness difference (ΔL) between the selected porcelain shade (2M2) and the color of the final restoration were obtained using a clinical spectrophotometer (VITA Easyshade). Statistical analysis was performed using One-Way ANOVA and Tukey’s test (α=0.05). RESULTS: The ΔE mean values, standard deviation and statistical ranking for the experimental groups were: (YZ) 2.38 ± 0.44b; (IZ) 2.92 ± 0.67ab; (AL) 3.43 ± 0.84a. AL group showed the highest ΔE and ΔL mean values. IZ showed an intermediate ΔE value and statistically similar to AL and YZ groups. There was no significant difference between ΔL values for YZ and IZ groups. CONCLUSION:  Although the color difference between all experimental groups and the porcelain shade selected to veneer the restorations could be visually detected (ΔE>1.0), only AL showed a difference above the clinical threshold (ΔE>3.0). Thus, the first study hypothesis was partially accepted. In addition, the type of framework ceramic influenced the final restoration color, accepting the second study hypothesis.
Influence of photoactivation protocol and ceramic thickness on mechanical properties of cementation agents
Authors: Oliveira Bárbara Malta Neves , Alves Karime Botelho , Ambrosano Gláucia Maria Bovi , Lima Débora Alves Nunes leite , Baron Giselle Maria Marchi , Aguiar Flávio Henrique Baggio , Giorgi Maria Cecília Caldas
Published: March 2017

The objective of this work was to evaluate the influence of photoactivation protocol and ceramic thickness on the Knoop microhardness (KHN) and the diametrical tensile strength (DTS) of a dual resin cement (Rely X ARC 3M ESPE (RL)) and a low viscosity composite resin (Filtek Z350 Flow 3M ESPE (Z)). Thereunto, cementation agents were photoactivated under ceramic discs of lithium disilicate with thickness of 1 and 2mm, and a glass slide (control group). The photoactivation was performed with halogen light-curing unit in continuous mode (XL 3000 3M Espe,) (XL) 500 mW/cm2 X 38 s, and with third generation LED light-curing unit (Valo Ultradent) in Standard mode (S) 1000 mW/cm2 X 19 s and Plasma Emulation mode (PE) 3200 mW/cm2 X 6 s, all them providing approximately 19 J/cm2. For KHN measurement, samples (5mm X 1mm) were made (n=8) and submitted to the KHN test on the top surface under a load of 10g applied for 10 seconds. For the DTS (n=8), samples (5mm X 3mm) were made and submitted to a compressive load of 0.5 mm/s until fracture. The data obtained were submitted to the statistical analysis. For KHN, there was statistically significant effect for interactions cementation agent X ceramic thickness, where RL presented higher values of KHN than Z. Comparing inside of cementation agent, RL presented higher values of KHN when photoactivated under 1 mm of ceramic thickness, different from the others. For Z, there was no statistically significant difference between different thickness and the control. The interaction cementation agent X photoactivation protocol was also significant, where for all the photoactivation protocols RL presented higher values of KHN than Z. For the cementation agent there was no significant difference in the values of KHN in all the photoactivation protocols for RL. For Z, the higher values of KHN were obtained by XL protocol and the lower values by S. For DTS, there was significant effect for the interaction cementation agent X photoactivation protocol, where in the photoactivation protocol factor, RL presented higher DTS when photoactivated by XL protocol. For cementation agent factor, the higher values of DTS for RL were obtained with XL, and the lower ones with S. For Z, similar values of DTS were obtained among photoactivation protocols evaluated. It was possible conclude that ceramic thickness and the photoactivation protocols exerted influence on the mechanical properties of  cementation agents evaluated.
Laboratory testes with quality data in dentistry.
Authors: Campos Juliana Alvares Duarte Bonini , Oliveira Ana Luísa Botta Martins de , Domingos Patricia Aleixo dos Santos , Botta Ana Carolina , Garcia Patricia Petromilli Nordi Sasso
Published: March 2017

In laboratory tests, just following the manufacturer’s instructions of materials or equipments may not be enough to obtain reliable data. Thus, intra and inter-examiners studies may be required. The aim of this study was to illustrate the application of the Intraclass Correlation Coefficient (r) in a study related to the color changing and hardness of composite resin conducted by two examiners. The color and hardness of 10 specimens of composite resin were evaluated by a colorimetric spectrophotometer and hardness tester, respectively, at two different times. Two trained examiners performed two measurements with an interval of one week. Specimens were stored in artificial saliva at 37±1ºC for 7 days. The Intraclass Correlation was used for analysis of intra and inter-examiner reproducibility. The intra-examiner reproducibility was 0.79, 0.44 and 0.76 for L, a and b color coordinates for the examiner 1 and 0.84, 0.23, 0.21 for examiner 2. For hardness, r-values were 0.00 and 0.23 for the examiner 1 and 2, respectively, showing unsatisfactory agreement on color and hardness evaluation for both examiners. It was noted that only the observation of protocol for use of equipment and examiners training were not sufficient to collect reliable information. Thus, adjustments in the experimental protocol were made and devices were produced to standardize the measurements. The reproducibility study was performed again. For examiner 1, values as 0.90, 0.59 and 0.79 were verified for L, a and b coordinates and, for examiner 2 were obtained values of 0.90, 0.75, 0.95. In relation to hardness, r-values of 0.75 and 0.71 were obtained for examiners 1 and 2, respectively. The inter-examiner reproducibility was 0.86, 0.87, 0.91 for L, a and b coordinates and 0.79 for hardness. It was concluded that intra and inter-examiner calibration is essential for obtaining quality measurements in laboratory tests.
Bond strength between silorane-based composite resin and dentin substrate
Authors: Pereira Jefferson Ricardo , Côrrea Junior Lindomar , Almeida Mauro De Souza , Valle Accácio Lins do , Pamato Saulo , Vidotti Hugo Alberto , Souza Grace Mendonça Dias
Published: March 2017

The aim of this study was to evaluate the bond strength between composite resin and dentin using different bond systems. Sixteen human molars extracted were selected. Each tooth was vertically cut in 3 dentin fragments of 2 mm of thickness (n=42) and randomly divided among the groups. Groups 1 was used Adper Single Bond 2, for groups 2 Silorano primer, groups 3 Adper SE Plus, and 4 Scotchbond Multiuse. Two composite resin cylinders were built up on each dentin surface (n=10) and subjected to a micro shear bond strength test until failure. To evaluated the results were used the Kruskal-Wallis OneWay Analysis of Variance and Tukey Test (p=0.05). Kruskal-Wallis test evidenced at least one statistical significant difference (p=0.001). The Tukey test showed statistical significant differences among the group (P<0.05). Group 1 showed statically significant higher results when compared with group 4. The results of this study evidenced that the adhesive system can effect the bond strength between silorano-based composite resin and dentin.
Bruxism in children: Effectiveness of bite splints
Authors: Oliveira Marcelo Tomas de , Bressan Talita , Pamato Saulo , Niehues Ana Carolina , Niehues Nara Farias , Netto Janine Nicoladelli , Bittencourt Sandra Teixeira
Published: March 2017

Purpose: The aim of this study was to evaluate the effectiveness of bite splints in the treatment of children with bruxism, reduction or elimination of symptoms and effective use of the dental appliance by patients. Methods: The sample consisted of 30 children with bruxism, aged 7 to 10 years, attending the Pediatric Dentistry Clinic of the University of Southern Santa Catarina. After approval by the ethics committee and parental informed consent agreement, children underwent anamnesis, physical examination, and alginate molding for fabrication of acrylic bite splints. The children were reassessed after 15 days and after 4, 8 and 12 months of splinting use through new clinical examination and questionnaires. Results: The use rate of bite splints shows that there was a positive correlation (rP=0.9961) between the decrease in use and time elapsed. The parafunctional habit of bruxism was no longer observed in 76.7% of the sample. It was observed that both symptoms evaluated, headache and muscular discomfort, showed a behavior that, if present at the beginning of treatment, declined during follow-up. No splint wear and tear was observed. Conclusion: There was a significant reduction in parafunctional activity, headache and muscular discomfort with the use of bite splints. The higher the persistence of patients, the higher the use rate of bite splints.
Is possible to use the golden ratio of skulls in sketches? Study of a brazilian sample
Authors: Brito Liz Magalhães , Fernandes Mário Marques , Szabo Margarida Santini , Michel-Crosato Edgard , Oliveira Rogério Nogueira
Published: March 2017

Introduction: The ratios of the human face and body have been analyzed since Antiquity. The bone architecture of the head is based on proportional relationships that are very valuable in the application of auxiliary techniques for identifying individuals of unknown identity. Aims: The objective of this study was to verify the Divine Ratio in a sample of Brazilian skulls from the northeast region, using craniometric measurements and indices and showing their potential in sketches. Materials and Methods: The measurements were taken directly from the skulls, and 14 craniometric measurements were selected from which 3 geometric formulas, 6 horizontal and 4 vertical relationships, and 6 facial indices were calculated. The data were tabulated and described, using the Confidence Interval of the mean (p<0.05). Results: The Golden Ratio (1.618) was not found in the population examined; however, it was possible to establish facial indices and coefficients of the measurements themselves, constructing regional anthropometric parameters based on the ratios studied. The ratio of the height of the head in relation to the height of the face (1.69) was the variable that most closely resembled the Golden Number, and the ratio of the height of the nose equaling half the height of the face (0.92) was the variable that most closely approached the equalities. Conclusion: It was found to be possible to use one craniometric measurement to obtain another one, using the facial indices and the calculated linear regressions, with some of the variables. This study makes a potential contribution to the search for establishing skull ratios that are reproducible for the face, contributing to the improvement of sketch techniques in future studies.
Effect of mechanical cycling on microtensile bond strength between dentin and pressed ceramic restoration cemented by different strategies.
Authors: Bergoli César Dalmolin , Amaral Marina , Prochnow Emília Pithan , Konzen Mariane , Valandro Luiz Felipe
Published: March 2017

Introduction: Hot pressed ceramics is usually used in prosthodontics as restorative material, being important to evaluate which cementation strategy generates better union between this ceramic and dental structure.Aim: To evaluate the effect of mechanical cycling on bond strength between a hot-pressed glass-ceramic and dentin, using different cementation strategies. Materials and Methods: Sixty molar teeth with flat oclusal dentin surface were allocated in six groups: Gr1-Self-adhesive resin cement; Gr2-Self-adhesive resin cement + Mechanical Cycling(MC); Gr3-Total etch adhesive + conventional resin cement; Gr4-Total etch adhesive + conventional resin cement + MC; Gr5-Self-etching adhesive + resin cement with MDP; Gr6-Self-etching adhesive + resin cement with MDP + MC. Sixty hot-pressed leucite-based all-ceramic restorations were cemented as recommended by manufacturers. Bar-shaped samples of 1 mm2 of cross-sectional bonding area were obtained and the microtensile test were conducted. Data were submitted to ANOVA-two way and Tukey test (α=0.05). Results: Mechanical cycling did not influence the results (p=0.1576), but cementation strategy (p=0.0419) affected. RelyX U100 showed the lowest values (7.0±5.0), RelyX ARC showed highest values (10.6±4.5) and Panavia F showed intermediary values (8.5±5.1). Conclusion: 2.106 million cycles are not able to damage the union between resin cement and dentin; conventional adhesive cementation strategy promoted the more stable interfaces between restoration and dentin.
COLOR STABILITY OF A NANOFILLED RESIN: INFLUENCE OF POLISHING AND FINISHING AND FLUORIDE SOLUTIONS ACCORDING TO TIME
Authors: Oliveira Ana Luísa Botta Martins , Domingos Patrícia Aleixo dos Santos , Campos Juliana Alvares Duarte Bonini , Botta Ana Carolina , Garcia Patrícia Petromilli Nordi Sasso
Published: March 2017

AIM: The aim of the study was evaluate the finishing and polishing effect of the color stability of the composite resin Filtek Supreme XT, according to different fluoride solutions and time. MATERIAL AND METHODS: Specimens were prepared (n=140) with half of the samples finished and polished. The experimental groups were divided according to the presence or absence of finishing and polishing and immersion solutions (artificial saliva, sodium fluoride solution at 0.05% - manipulated, Fluordent Reach, Oral B, Fluorgard). The specimens remained in artificial saliva for 24 hours and were subjected to an initial color analysis using a spectrophotometer CIELab system. Then, they were immersed in the experimental solutions for 1 minute a day. The readings of the color change were made after 24 and 48 hours, 7, 14, 21, 30 and 60 days after the first immersion. The three-way mixed Analysis of Variance (ANOVA) ("finishing/polishing", "immersion medium" and “time”) were performed. For multiple comparisons, the Sidak test for repeated measure was used, with a 5% level of significance. RESULTS: The finishing and polishing factor showed significant variability, independently of the immersion media (p<0.001). CONCLUSION: Finishing and polishing procedures yielded better color stability to composite resin over time, regardless of the immersion media.
Erosive potential: Laboratory evaluation of tooth dissolution in cough syrups
Authors: Bamise Cornelius Tokunbo , Oziegbe Elizabeth Obhioneh , Ayodeji Esan Temitope , Alo Ireti Francis
Published: March 2017

AIM: To evaluate the associated weight loss of extracted teeth after immersed in cough syrups for a period of time so as to predict the erosive potential of the liquid medicines. MATERIAL AND METHODS: pHs of the medicines were measured at the start of the study. 25 extracted test teeth were weighed to 0.01 mg and assigned at random to each syrup under evaluation. The test medicines were placed in 10 mL screw-cap plastic containers and the test teeth were weighed after 7 days. RESULTS: 88 % of the medicines caused reduction in weights of the test teeth after seven days of immersion. Weight loss of the test teeth also noticed with basic syrups. Also lowest pH syrup did not produce the greatest weight loss. CONCLUSION: Majority of the cough syrups caused loss of weight of the test teeth. Thus, they possess the potential to cause dental erosion.
Actinic cheilitis: Epidemiological study in a riverine population of northern Brazil
Authors: Barreiros André , Nascimento Gustavo , Junqueira José Luiz Cintra , Araújo Vera , Furuse Cristiane
Published: March 2017

AIM: The aim of this survey was to assess the prevalence of AC in riverine population in countryside of Amazonas, northern Brazil. MATERIAL AND METHODS: Patients answered a questionnaire and were examined between January and December of 2008. Data were gathered on the following participant’s characteristics: 1) age group; 2) gender; 3) ethnicity 4) outdoor activities (sunlight exposure); 5) smoking habits; 6) drinking habits; and 7) access to oral health services (the last dental visit). Clinical observation of the lips for determination of AC presence was used. Patients who presented clinical manifestation of moderate and severe AC were submitted to incisional biopsy to confirm the diagnosis. In case of a positive result after histopathological examination, patients were advised and appropriate treatment was offered. All patients received information about AC and its prevention. RESULTS: Among the 200 participants that were examined, the prevalence of AC was 2% (4 cases). Of all patients surveyed, women were the majority totalizing 124 patients (72.0%). According to age, 48 (24.0%) people were 20-34 year-old; 42 (21.0%) were 35-44-year-old; 50 (25.0%) were 45-60-year-old; and 60 (30.0%) were 61 or older. CONCLUSION: Even though AC was present in a low prevalence rate, an epidemiological variety is expected, once geographic and ethnic differences should be considered.
Effect of two different commonly available energy drinks on surface micro hardness of tooth color restorative materials
Authors: Fatima Nazish , Hussain Mehwish
Published: March 2017

AIM: The objective of present study was to assess the effect of commonly used energy drinks on surface micro hardness of tooth color restorative materials. MATERIAL AND METHODS: Sixty discs of all material were prepared in polytetrafluoroethylene mold which was 10 mm in diameter and 2 mm in thickness. Two groups were made for each material containing 10 discs; G1/G2 (vitofil), G3/G4 (vitremere), G5/G6 (Filtek Z350). After 24 hours, the discs were polished. Group 1, group 3 and group 5 were immersed in red bull for 2 minutes during whole expereiment. Group 2, group 4 and group 6 were immersed in jolt cola for 2 minutes during whole expereiment. Microhardness test were performed in digital micro hardness tester before and after immersion at different time interval. The results were statistically analyzed with the help of two-way ANOVA with repeated measurement and Tukey’s test. RESULTS: According to time interval for vitofil and vitremere there is insignificant difference between baseline and day 1 surface micro hardness values (p>0.001). Significant difference is seen between baseline micro hardness and day 7 day 14,day 30 (p<0.001). Inverse is true for Filtek Z350 there is significant difference between base line and day 1 micro hardness values(p<0.001). The difference between base line, day 7, day 14 and day 30 is insignificant (p>0.001). According to immersion media there is insignificant difference between both of them (p>0.001). CONCLUSION: The effect of energy drinks on the surface micro hardness of a restorative material depends on the duration of contact time and the material composition not on the type of drink.
Evaluation of results of maxillary sinus lifting surgeries using Resorbable synthetic hydroxyapatite
Authors: Tabaczinski Ana Paula , Gourlat Lucas Gomes , Nesi Humberto , Rodrigues Neto Dimas João
Published: March 2017

AIM: This study aims to evaluate the results of 10 cases of maxillary sinus lifting using synthetic resorbable hydroxyapatite (osteogen ®) as a filling material. MATERIAL AND METHODS: The surgeries were performed in patients who presented bone resorption in this region. The results were compared radiographically six months after the surgery through initial and final radiographs analysis. RESULTS: The vertical bone height gain was on average 1200.4%, when compared to the initial bone edge. CONCLUSION: The formation of bone tissue in that region had made possible future prosthetic rehabilitation.
Incipient caries lesions: from concept to actual treatment approaches
Authors: Araújo Diana , Alencar Marina , Freitas Maria Cristina , Azevedo Larissa , Atta Maria , Wang Linda
Published: March 2017

The concepts introduced by the Minimally Invasive Dentistry (MID) allowed the rising of new conservative treatment and assessment system for caries lesions’ classification.  In this context, the approaches of the incipient caries lesions surpass the use of only traditional restorative techniques. The aim of this study was to review the new caries classifications criteria (ICDAS and CAST), the importance of the early diagnosis of caries lesions and the clinical procedures for treatment in MID.
Influence of photocuring and storage time on the volumetric change of resin modified glass ionomer cements
Authors: Vieira Ian , Atta Maria
Published: March 2017

AIM: This study evaluated the effect of photoativation and storage on the hygroscopic expansion of resin modified glass ionomers (Vitremer-3M/ESPE, Fuji II LC-GC Int., Vitro Fil LC-DFL). MATERIAL AND METHODS: The RMGIC were manipulated according to the manufacturer’s instructions, inserted into a mold and kept in a darkness box for 15 minutes. Then, the samples were distributed into four groups (n=5): light-cured for 20s, light-cured for 40s, light-cured for 60s and not light-cured (control group).  Each sample was storage in distilled water at 37ºC. The measurements of volumetric changes were made in three different times of storage: 24 hours, 7 days and 30 days. Volumetric changes were determined using Archimedes principle. Means and standard deviations  values were analyzed by three-way analysis of variance and  Tukey’s test to compare significance between the groups (α=0,05). RESULTS: All materials underwent volumetric expansion after 30 days. Vitremer showed the less expansion when no light-cured. The time of light-cure did not influence the volumetric change, except for Fuji II LC, that showed great expansion when activated for 60s. Vitro Fil LC showed some degree of shrinkage after 7 days. CONCLUSION: This study concluded that photocuring can influence the volumetric change of resin modified glass ionomer cement.
Influence of filling technique and bevel preparation on marginal sealing of conventional and low shrinkage composite restorations
Authors: De Oliveira Pâmella Tomazi Godoy , Vieira Rodrigo Monteiro , Jardim Patrícia Dos Santos , Klein Júnior Celso Afonso , Conceição Ewerton Nochi , Erhardt Maria Carolina Guilherme , Coelho de Souza Fábio Herrmann
Published: March 2017

AIM: The aim of this study was to evaluate two composite restorations (conventional methacrylate-based and low shrinkage-based silorane), associated or not to beveling and incremental technique, in relation to the microleakage and marginal gap formation tests. MATERIAL AND METHODS: 30 sound human molars had their mesial and distal surfaces prepared with and without bevel. The teeth were divided into six groups according to the type of resin (conventional nanofilled or silorane resin), and restorative filling technique (incremental technique or builk). Microleakage and marginal gap formation data were statistically analyzed by Kruskal-Wallis and Chi-Square tests, with a significance level set at 5%. RESULTS: Group 1 (Z350 XT, without bevel, incremental technique) presented highest rate of microleakage and marginal gap in most of the restorations, with statistically significant differences. Groups 4 and 6 (P90, beveled, builk and P90, beveled and incremental technique) had lower rates of microleakage and absence of marginal gaps in most of the restorations. CONCLUSION: It’s concluded that the silorane showed lower rates of marginal gaps and microleakage, when compared to the conventional methacrylate-based resin. Bevel preparation was effective in reducing microleakage and marginal gaps for both resins used. Incremental technique was not necessary when associated with low shrinkage composite resin.
Evaluation of tensile strength resistance of different biomaterials in calvarial rats
Authors: Sanada Jefferson Tomio , Ribeiro Ingrid Webb Josephson , Mengatto Cristiane Machado , Kapczinski Myriam Pereira , Do Valle Accácio Lins
Published: March 2017

AIM: The aim of this study was to determine the effect of different grafting materials on bone tensile strength after 6-month wound healing. MATERIAL AND METHODS: Non-critical size defects (3-mm diameter) were created in calvarium of 30 three-month-old Wistar rats. Animals were divided into 3 groups (n=10) treated with different grafting materials: GenOx® (Group 1A); GenMix® (Group 1B); no treatment (blood clot, Group 3). Six months after the surgery, rats were sacrificed; bone specimens were harvested and submitted to tensile strength test using a universal testing machine. The bone fracture surface morphology was evaluated using scanning electron microscopy (SEM) at 200X magnification. Data were compared by One-Way ANOVA at 5% significance. RESULTS: No significant difference was found among the groups although tensile strength decreased in the following order: Group 3 (9.56±3.74MPa), Group 1B (8.58±3.60MPa), Group 1A (7.70±2.41MPa). All tested materials showed similar effects on bone tensile strength, no matter the source (xenogenic or blood clot). CONCLUSION: After six months of bone healing, the type of grafting material is irrelevant to the final outcome and bone tensile strength.
Evaluation of the in vitro antimicrobial activity of alcoholic solution and aqueous extract of bee propolis against enterococcus faecalis
Authors: Só Marcus Vinícius Reis , Volpato Cristiane , Só Bruna Barcelos , Bruggemann Rafaela , Kopper Patrícia Maria Poli , Pereira Jefferson Ricardo
Published: March 2017

AIM: The purpose of this study was to analyze the in vitro antimicrobial activity of aqueous and alcoholic extracts of propolis at 1% and 3% concentrations against Enterococcus faecalis (ATCC® 19433). MATERIAL AND METHODS: Initially, the microbial suspension was seeded in a Brain Heart Infusion Agar (BHIA) culture medium, distributed in 20 Petri dishes. Then, 4 soaked filter paper discs were placed on the surface of the inoculated medium of each plate for 1 minute in 1 mL of the following substances: C+ (positive control, n=20): 2%  chlorhexidine gel; C- (negative control, n=20): saline solution; S1 (n=10): 1% bee propolis alcoholic solution; S2 (n=10): 3% bee propolis alcoholic solution; E1 (n=10): 1% aqueous propolis extract; E2 (n=10): 3% aqueous propolis extract. One filter paper disc of each (C+, C-, S1 and S2) was placed in a set of 10 Petri dishes, whereas one filter paper disc of each (C+, C-, E1 and E2) was placed in the other set of 10 Petri dishes. RESULTS: The results obtained after incubation at 37°C for 24 hours under microaerobic conditions revealed that S2 showed higher mean levels of microbial growth inhibition as compared to E1, E2 and S1. There were no significantly statically differences between the groups, except for the S2 group and C- group. Mean levels in all other groups were lower than in the C+ group. CONCLUSION: The study concluded that 1% and 3% bee propolis alcoholic solution had lower antibacterial activity against Enterococcus faecalis as compared to 2% chlorhexidine gel.
Biofilm formation on complete denture liners
Authors: Rahal Juliana Saab , Locks Bruna Jussara Constantino , Mesquita Marcelo Feraz , Henriques Guilherme Elias Pessanha , Nóbilo Mauro Antônio Arruda
Published: March 2017

AIM: To clinically evaluate biofilm growth on 4 liners in complete denture base surfaces of 20 geriatric patients. MATERIAL AND METHODS: Patients received new complete maxillary dentures prepared with 4 chambers (10x10x2 mm) in the tissue surface of acrylic denture base. Each of the 4 chambers was randomly filled with the following denture liners: Eversoft (M1); Kooliner (M2); GC Reline Extra Soft (M3); Elite Soft Relining (M4). Patients were randomly separated into 2 treatment groups: T1- sanitization with soft brush and dentifrice; T2- similar to T1 with daily immersion in cleansing chemical solution (Ortoform). Patients had 8 follow-up sessions over a 3-month period. The internal denture surface was stained with a dental plaque dye at each of the follow-up visits. Standardized photographs were taken, and biofilm growth was scored. Data were tabulated and submitted to Analysis of Variance. Means were compared by Tukey (p<0.05) and T tests. RESULTS: Kooliner (M2) means were significantly different from the others for both groups T1 and T2. Treatment 1 promoted higher biofilm growth scores than treatment 2. The highest score after treatment 1 was Kooliner (M2) and the lowest was Elite Soft Relining (M4). As for treatment 2, Eversoft (M1) was statistically different from Elite Soft Relining (M4). Again, Kooliner (M2) presented the highest score and Elite Soft Relining (M4) the lowest. Kooliner (M2) was statistically different from both GC Reline Extra Soft (M3) and Elite Soft Relining (M4). CONCLUSION: Of the materials and treatments studied, the best clinical selection for lower biofilm growth scores would be Elite Soft Relining (M4) with treatment 2.
What is the best treatment for impacted maxillary canines? Expose and wait or perform traction? A systematic review
Authors: Pithon Matheus Melo , Matos Tarcila
Published: March 2017

AIM: The aim of this systematic review was to seek evidence in the literature about the best treatment for cases of impacted maxillary canines. MATERIAL AND METHODS: This review has been registered at PROSPERO – International prospective register of systematic review under the number CRD42014007033. A systematic review was conducted in the Scopus, PubMed, Medline EBSCO, Embase, Web of Science, Cochrane, Clinical Trials and Greyliterature electronic databases, without limitations on the year of publication and language. Controlled clinical studies were included in this review, which were conducted with orthodontic patients with fixed appliances, without age limit, with the presence of impacted maxillary canines, in whom the procedures of surgical exposure only, or exposure followed by orthodontic traction were performed. Those excluded were computational studies, case reports, reviews of the literature, didactic books, editorial letters, in addition to studies including patients using systemic drugs, syndromic patients, with history of dental trauma, those who had previously used orthodontic appliances and had been submitted to previous previous treatment attempting exposure or traction of the canine. A process of scoring the methodological quality was used to identify which of the studies would be more suitable for evaluation. RESULTS: Seventeen articles met the inclusion criteria and the complete texts were evaluated. One article with low methodological quality was not considered and 16 were evaluated by qualitative evidence synthesis. Fourteen articles analyzed the technique of surgical exposure followed by orthodontic traction, 1 article evaluated the exposure technique only, and 1 presented an approach of comparison between the two techniques. CONCLUSION: The information analyzed presented good methodological quality ranging from moderate to high, and allowed one to conclude that in spite of presenting satisfactory results for impacted maxillary canines, there was insufficient evidence to support the use of the technique of surgical exposure and independent eruption.
Immediate complete denture: a contemporary view
Authors: Gavazzoni Alessandro , Rosso Júnior Francisco , Pereira Jefferson Ricardo
Published: March 2017

AIM: The objective of this study was to describe the advantages, disadvantages, indications and some limitations of the Immediate Complete Denture (ICD) treatment. MATERIAL AND METHODS: An electronic and manual search was made in SciELO, SCOPUS, MEDLINE/PubMed databases from 1972 to 2015. Publications in Portuguese, Spanish and English were selected to write this narrative review of the literature. CONCLUSION: Despite the limitations of this study it was conclude that treatment with ICD is the best option because of its satisfactory results.
Treatment of excessive gingival display using lip repositioning technique: a case report
Authors: Nascimento Bruna De Fátima Kazm Soeiro do , Araújo Rodolfo José Gomes de , Brilhante Felipe Vilhena , Mattos Jacy Leite , Costa Silvia Denise da , Silva Thaís Fernandes da , Melo Tracy Martins de
Published: March 2017

The gummy smile is becoming one of the most frequent complaints reported by patients unhappy with your smile. According to the etiology, will be proposed various treatments. The purpose of this case report is to describe the lip repositioning technique, softening the gummy smile of the patient. It concludes that the lip repositioning technique is suitable for the correction of the gummy smile.
The use of botulinum toxin as a way of treatment for gingival smile: case report
Authors: Brum Cristiane Romani Pedro Antônio , Coleta Roberto Dela , Lunardi Nadia , Boeck Eloisa Marcantonio , Pizzol Karina Eiras Dela Coleta
Published: March 2017

Gingival smile is defined as excessive gum exposition. Its etiology may be related to several factors, among them a maxillary vertical excess, superior dentoalveolar protrusion, changed passive extrusion and or eruption of anterior-superior teeth and hyperactivity of superior lip lift muscle.  In cases in which the etiological factor is from muscle, the use of Botulinum toxin typo A (BTX-A) should be indicated. To highlight the benefits obtained with therapeutic use of this substance, the authors describe a clinical case of a female young patient, in which the Botox® was applied to correct gingival smile as a way to complement the orthodontic treatment. The applications were performed in two lateral points on the nose wing in a single session. The result was very satisfactory and there was no need additional dose. The authors concluded that BTX-A is a safe option and minimum invasive for treatment of gingival smile when provoked by muscle hypercontraction. Its side effects are rare with discrete discomfort during the application.
Dermabrasion depigmentation for the treatment of gingival dyschromia caused by racial melanosis. A case report comparing two techniques
Authors: De Araújo Rodolfo José Gomes , Brilhante Felipe Vilhena , Mattos Jacy Leite , Nascimento Bruna De Fátima K. Soeiro do , Ferreira Deise Kersten Alves
Published: March 2017

AIM: The aim of this paper is to describe a clinical case in which the patient's gingival melanin pigmentation was treated using diamond burs and scalpels. CASE REPORT: The present study describes a periodontal plastic surgery procedure to correct or improve the amount of gingival melanin pigmentation apparent on mandibular and maxillary arch of the patient. CONCLUSION: After the surgical procedure successfully performed, and considering the high degree of satisfaction of the patient, the author concluded that the studied technique is easy to perform and stands out because of the excellent results achieved.