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1.
Biosci. j. (Online) ; 37: e37005, Jan.-Dec. 2021. ilus, tab
Article in English | LILACS | ID: biblio-1359867

ABSTRACT

This study aimed to analyze the shear bond strength (SBS) of ceramic orthodontic brackets bonded with two different adhesive systems to intact and eroded teeth. Ceramic brackets were bonded to 72 bovine central incisors divided into four groups, defined by two study factors: enamel condition (control group, kept in artificial saliva; and experimental group, eroded by using immersion cycles in Coke™ for 90 seconds, every six hours for five days), and adhesive system type (Transbond™ XT or Transbond™ Plus Color Change). Polycrystalline ceramic brackets were adhesively fixed on all specimens using the same light curing protocol. SBS was tested using 0.5 mm/min and the failure mode was classified. SBS data was analyzed using two-way ANOVA followed by Tukey test. The adhesive remnant index (ARI) scores were analyzed using Kruskal-Wallis test with Dunn's post-hoc pairwise comparison (α=0.05). Percentages of ARI scores between the groups were compared by Fisher's exact test. Spearman's correlation coefficient was applied to investigate the correlation between ARI scores and SBS values. Only the adhesive system factor had significant effect on SBS (p=0.014), Transbond™ Plus Color Change showing higher values. No significance was found for enamel condition (p=0.665) or the interaction between adhesive system and enamel condition (p=0.055). ARI scores frequencies differed between groups (p<0.001). The median ARI scores were statistically different for most comparisons among the groups. However, no significant correlation was found between ARI scores and SBS. In conclusion, the type of adhesive system affected the SBS of ceramic brackets to dental enamel, but the enamel condition, intact or eroded, had no significant effect. There was no correlation between ARI scores and SBS values, although eroded enamel tended to retain more adhesive after bracket removal.


Subject(s)
Tooth Erosion , Orthodontic Brackets , Dental Cements
2.
Femina ; 49(10): 622-630, 2021. graf, ilus, tab
Article in Portuguese | LILACS | ID: biblio-1358196

ABSTRACT

Objetivo: Determinar o perfil ético profissional dos obstetras do serviço de aborto legal no estado de Alagoas (Brasil) e delinear um protocolo e fluxograma para auxiliar no atendimento de mulheres estupradas. Métodos: Realizamos um estudo observacional-transversal, prospectivo e descritivo, incluindo todos os 26 obstetras do serviço de aborto legal. Na fase 1, investigaram-se o conhecimento legal e a posição ética, enquanto na fase 2 foram construídos um protocolo e um fluxograma para guiar o serviço nos casos de aborto legal. Resultados: Na fase 1, identificamos que a maioria dos obstetras não conhecia os aspectos legais sobre o aborto, não se sentiam confortáveis em estar no serviço e apontaram várias limitações no funcionamento dele. Na fase 2, foram desenvolvidos um protocolo e um fluxograma aplicados aos casos em que uma mulher estuprada deseja abortar por métodos legais. Conclusão: O perfil dos obstetras do serviço de aborto legal é insuficiente para lidar com a complexidade do aborto no estado. O protocolo e o fluxograma delineados tiveram o propósito de ajudar o serviço de aborto legal do estado a lidar com esse problema público/social.(AU)


Objective: To determine the professional ethical profile of obstetricians from the legal abortion service in Alagoas state (Brazil) and to design a protocol and flowchart to help the attendance of raped woman. Methods: We performed an observational- -sectional, prospective and descriptive study including all 26 obstetricians from the legal abortion service. Phase 1 investigated the legal knowledge and ethical position, while phase 2 was the construction of a protocol and flowchart to guide the service in cases of legal abortion. Results: In the phase 1 we identified that most obstetrician did not know the legal aspects about abortion; did not few comfortable to be in the service and they pointed out several limitations of how service works. Phase 2 of the study was the development of a protocol and flowchart applied to the cases which a raped woman wants to abort by legal methods. Conclusion: The profile of obstetrician from the legal abortion service is insufficient to deal with the complexity of abort in the state. The protocol designed have the purpose to help the state legal abortion service to deal with this public/social problem.(AU)


Subject(s)
Humans , Female , Pregnancy , Abortion, Legal/legislation & jurisprudence , Abortion, Legal/ethics , Violence Against Women , Ethics, Medical , Obstetrics/statistics & numerical data , Obstetrics/ethics , Rape/legislation & jurisprudence , Brazil , Women's Health Services , Epidemiology, Descriptive , Prospective Studies , Women's Health , Observational Studies as Topic/methods , Workflow
3.
Ciênc. Saúde Colet. (Impr.) ; 24(8): 2909-2922, ago. 2019. tab, graf
Article in Portuguese | LILACS | ID: biblio-1011878

ABSTRACT

Resumo Trata-se de uma revisão sistemática e metanálise para estimar e comparar as prevalências de fluorose dental em localidades brasileiras abastecidas com água tratada sem suplementação de flúor e em localidades que utilizam de água de origem subterrânea. Em dezembro de 2016 foram buscados estudos transversais em 8 bases de dados incluindo a "literatura cinzenta". As prevalências foram estimadas utilizando modelo misto de efeitos aleatórios considerando as localidades como subgrupo. A heterogeneidade entre os estudos foi avaliada através da estatística I2 e do teste Q de Cochran. Foram encontrados 1.038 registros, dos quais apenas 18 artigos preencheram os critérios de inclusão, sendo submetidos para análise. O modelo metanalítico estimou em 8,92% (IC95%:5,41% até 14,36%) a prevalência de fluorose dental em municípios com água tratada sem suplementação de flúor e em 51,96% (IC95%: 31,03% até 72,22%) em municípios abastecidos por poços artesianos. A heterogeneidade entre os estudos foi alta, I2 = 95% (p < 0,01) no primeiro subgrupo de municípios e I2 = 98% (p < 0,01) no segundo subgrupo. A prevalência foi significativamente maior (p < 0,001) em populações expostas à água de poços artesianos, indicando que a presença de flúor natural em concentrações elevadas representa um fator de risco para a ocorrência de fluorose dental.


Abstract This systematic review and meta-analysis aimed to estimate and compare the prevalences of dental fluorosis in Brazilian cities supplied with non-fluoridated water and in locations that uses groundwater. In December of 2016, cross-sectional studies were searched in eight databases, including the "grey literature". The prevalences were estimated through a mixed random effects model considering the locations as subgroups. The heterogeneity among the studies was assessed with I2 statistics and the Cochran's Q test. A total of 1038 records were found, from which only 18 articles met the inclusion criteria and were subjected to analysis. The meta-analytic model estimated a prevalence of dental fluorosis of 8.92 % (95 % CI: 5.41 % to 14.36 %) in cities supplied with non-fluoridated water, and of 51.96 % (95 % CI: 31.03 % to 72.22 %) in cities supplied by artesian wells. The heterogeneity among the studies was high: I2 = 95 % (p < 0.01) in the first subgroup of cities and I2 = 98 % (p < 0.01) in the second subgroup. The prevalence was significantly higher (p < 0.001) in populations exposed to artesian well water, indicating that the presence of natural fluoride at high concentrations represents a risk factor for the occurrence of dental fluorosis.


Subject(s)
Humans , Groundwater/chemistry , Fluorides/chemistry , Fluorosis, Dental/epidemiology , Brazil/epidemiology , Prevalence , Risk Factors , Cities
4.
Ciênc. Saúde Colet. (Impr.) ; 23(11): 3881-3890, Oct. 2018. tab
Article in Portuguese | LILACS | ID: biblio-974755

ABSTRACT

Resumo Avaliou-se a prevalência da insatisfação com os serviços odontológicos e sua associação com condições normativas e subjetivas de saúde bucal entre adultos brasileiros. Trata-se de um estudo transversal que utilizou dados do inquérito nacional de saúde bucal (SB Brasil) realizado em 2010. Considerou-se uma amostra representativa da população adulta brasileira. Foram conduzidas análises descritivas, bivariadas e múltiplas (OR/IC 95%) com correção pelo efeito desenho. Dentre os 4.539 adultos incluídos, 614 (13,4%) relataram a insatisfação com os serviços odontológicos utilizados. A insatisfação foi maior entre aqueles que apresentavam algum dente cariado (1,61/1,06 ; 2,44), que estavam insatisfeitos com seus dentes e boca (2,36/1,39 ; 4,02) e que haviam relatado dor de dente nos últimos 6 meses (1,99/1,29 ; 3,07). Conclui-se que a prevalência da insatisfação com os serviços odontológicos entre adultos brasileiros foi baixa e esteve associada a condições normativas e subjetivas de saúde bucal.


Abstract The prevalence of dissatisfaction with dental services and its association with normative and subjective oral health conditions among adult Brazilians was evaluated. This cross-sectional study used data from the last Brazilian National Oral Health Survey (SBBrasil), conducted in 2010. It was considered a representative sample of the adult Brazilian population. Data were analyzed by descriptive, univariate and multiple statistics (OR / 95% CI), with correction by the design effect. Among the 4539 adults included in the study, 614 (13.4%) reported dissatisfaction with dental services. Dissatisfaction was higher among adults who had any decayed teeth (1.61 / 1.06; 2.44), adults who were dissatisfied with their teeth and mouth (2.36 / 1.39; 4.02) and adults who had reported toothache in the previous six months (1.99 / 1.29, 3.07). The conclusion drawn was that the prevalence of dissatisfaction with dental services among Brazilian adults was low and associated to normative and subjective oral health conditions.


Subject(s)
Humans , Male , Female , Adult , Dental Care/standards , Patient Satisfaction , Mouth Diseases/therapy , Toothache/epidemiology , Brazil/epidemiology , Dental Health Surveys , Prevalence , Cross-Sectional Studies , Dental Caries/epidemiology , Diagnostic Self Evaluation , Mouth Diseases/epidemiology
5.
Rev. Assoc. Paul. Cir. Dent ; 69(3): 248-251, Jul.-Set. 2015. ilus, tab
Article in Portuguese | LILACS, BBO | ID: biblio-874869

ABSTRACT

Dentifrício fluoretado deve conter pelo menos 1.000 ppm (mg F/kg) do seu flúor total (FT) na forma quimicamente solúvel (FST) para ter o potencial máximo de interferir com o processo de cárie. Em formulações de dentifrícios contendo cálcio no abrasivo, a concentração de FST (íon flúor + íon MFP) diminui em função do tempo de armazenamento. Os quatro dentifrícios a base de MFP/CaCO3 mais vendidos no Brasil são capazes de manter 1.000 ppm de FST nos produtos pelo prazo de um ano de fabricação, mas não é conhecido o que ocorre até o final do prazo de validade. Assim, o objetivo deste estudo foi avaliar a concentração de FST nesses dentifrícios ao final do seu prazo de validade. Após as análises iniciais realizadas em 2010, os cremes dentais (n=30) foram armazenados à temperatura laboratorial (25°C) e as concentrações de FT e FST foram novamente determinadas em 2012, próximo a data de vencimento (36 meses). As análises foram feitas utilizando protocolo validado de extração, as determinações foram feitas com eletrodo íon específico e os resultados expressos em ppm F (mg F/kg). A concentração (média±dp;n=30) de FT encontrada (1.415,2±62,8) estava de acordo com o declarado pelo fabricante (1.450 ppm F), porém a de FST foi 44% menor (814,7±74,7). Ao final do prazo de validade, os dentifrícios brasileiros mais vendidos não mantêm uma concentração de FST máxima desejável, mostrando tanto a importância do Cirurgião-Dentista na orientação do paciente como a necessidade da revisão da resolução Anvisa nº 79 que regulamenta a matéria sobre dentifrícios


Fluoride toothpaste should contain at least 1,000 ppm (mg F/kg) of fluoride chemically soluble to have the maximum potential to interfere with the caries process. In formulations containing calcium--based abrasives, the concentration of total soluble fluoride (TSF = fluoride ion + MFP ion) decreases according to the storage time. The four MFP/CaCO3-based toothpastes most consumed in Brazil are able to maintain 1,000 ppm of TSF throughout one year of manufacturing, but it is not known if it would be maintained up to the expiration date. Thus, this study evaluated the concentration of TSF in these toothpastes at the end of expiration date. As control, the total fluoride (TF) concentration was also determined. After the analysis of fresh samples conducted in 2010, the toothpastes tube (n=30) were stored at temperature of 25°C and the determinations of TF and TSF concentrations were again assessed in 2012, close to the expiration date of the toothpastes (3 years). The analyses were made using a validated protocol of extraction, the determinations were made with an ion specific electrode and the results were expressed in ppm F (mg F/kg). The concentration (mean±SD;n=30) of TF found (1.415.2±62.8) was according to the declared by the manufacturer (1.450 ppm), but the TSF was 44% lower (814.7±74.7). At expiration, the most sold MFP/CaCO3-based brazilian toothpastes do not maintain the maximum TSF concentration required, showing not only the relevance of the Dentist to advise the patients about this subject, but also the necessity to review the Brazilian regulation about toothpastes


Subject(s)
Dental Caries/diagnosis , Fluorine Compounds/chemical synthesis , Toothpastes/administration & dosage , Toothpastes/chemical synthesis , Dentifrices/administration & dosage , Dentifrices/chemical synthesis , Dentifrices/therapeutic use , Fluorine/administration & dosage , Fluorine/therapeutic use
6.
Rev. bras. ciênc. saúde ; 15(1): 3-10, 2011. tab, ilus
Article in Portuguese | LILACS | ID: lil-609211

ABSTRACT

Objetivo: Avaliar o pH, a quantidade de Sólidos Solúveis Totais (°Brix), condutividade elétrica e a superfície do esmalte bovino submetido à ação de bebidas gaseificadas de baixa caloria, em Microscopia Eletrônica de Varredura (MEV). Material e Métodos: Os produtos utilizados foram: Aquarius Fresh® limão, H2OH!® limão, Aquazero® limão, Viver light® limão, Coca-cola® (controle positivo) e água deionizada (controle negativo). A avaliação do pH foi realizada mediante o uso de phmetro digital, a condutividade elétrica foi determinada por meio de um condutivímetro de bancada e para a quantificação do °Brix utilizou-se um refratômetro específico de campo. Para cada análise foram feitas três aferições e calculou-se a média aritmética. A superfície adamantina foi confeccionada a partir da exodontia de incisivos hígidos de maxilares bovinos de animais destinados ao abate, obtendo-se ao final, blocos de esmalte de 3x3mm (n=12) que foram submetidos ao contato por 5 minutos com as bebidas e em seguida lavados e armazenados para posterior análise em MEV. Resultados: Os valores de pH variaram de 2,56 (controle positivo) a 6,00 (controle negativo), estando as demais bebidas abaixo do pH 3,46. Os resultados para condutividade elétrica variaram de 001mS.cm -¹ (controle negativo) a 1071 mS.cm -¹ (Coca-Cola® ). Com relação aos °Brix, todas as bebidas, com exceção da Coca-Cola® (6,5°Brix) tiveram valor 0°Brix. Observou-se que as bebidas analisadas revelaram-se potencialmente erosivas. A superfície do esmalte exposto às bebidas gaseificadas apresentou características microestruturais indicativas de erosão. Conclusão: As bebidas gaseificadas analisadas se revelaram potencialmente erosivas para a superfície adamantina exposta, por um curto período de tempo, à ação destes produtos, não apresentando potencial cariogênico.


Objective: To evaluate the pH, the amount of total soluble solids (°Brix), electrical conductivity and the surface of bovine enamel, by Scanning Electronic Microscopy (SEM), subjected to the action of low- calorie soft drinks. Materials and Methods: The products tested were: Aquarius® Fresh lemon, H2OH!® lemon, Aquazero® lemon, Viver Light®lemon, CocaCola® (positive control) and deionized water (negative control). The pH evaluation was performed by using digital pHmeter. Electrical conductivity wa s determined by a workbench conductivimeter and for quantification of °Brix was used a specific refractometer of . For each analysis were made three measurements and the arithmetic mean was calculated. The adamantine surface was made from the extraction of healthy maxillary incisors from bovine animals for slaughter, resulting in the end, in 3x3mm enamel blocks (n = 12), which were submitted to contact for 5 minutes with the drinks and then washed and stored for subsequent analysis by SEM. Results: The pH values tranged from 2.56 (positive control) to 6.00 (negative control), while the remaining beverages showed pH bellow than 3.46. The results for electrical conductivity ranged from 001 mS.cm-¹ (negative control) to 1071 mS.cm- (Coca-Cola®). Considering the TSS, all beverages had a value of 0° Brix, excepting Coca-Cola® (6.5° Brix). It was observed that the beverages analyzed proved to be potentially erosive. The enamel surface exposed to fizzy drinks had microstructural features indicative of erosion. Conclusion: Fizzy drinks analyzed have proved to be potentially erosive for the adamantine surface exposed for a short period of time to the action of those products, presenting no cariogenic potential.


Subject(s)
Tooth Erosion , Microscopy, Electron, Scanning , Carbonated Beverages , Dentistry
7.
Rev. odontol. UNESP (Online) ; 39(2): 69-74, abr. 2010. tab
Article in Portuguese | LILACS, BBO | ID: biblio-874369

ABSTRACT

O crescente consumo de bebidas açucaradas e com pH ácido tem sido considerado um fator de risco para o desenvolvimento de lesões nas superfícies dentais. Dessa forma, o objetivo deste estudo foi avaliar o pH, a condutividade elétrica e a quantidade de Sólidos Solúveis Totais (SST) de bebidas gaseificadas comercializadas na cidade de João Pessoa - PB. Constituíram a amostra os produtos Aquarius Regular®, Aquarius Fresh® limão, H2OH!® limão, H2OH!® limão e tangerina, Aquazero® limão, Água Mineral Schincariol® com gás, Água Tônica Antárctica® (controle positivo) e Água Mineral Schincariol® sem gás (controle negativo). A avaliação do pH foi realizada mediante o uso de pHgâmetro digital, modelo pH 300, da marca Analyser®. A condutividade elétrica foi determinada por um condutivímetro de bancada modelo 600 da Analyser®. Para a quantificação dos Sólidos Solúveis Totais ou °Brix, utilizou-se um refratômetro específico de campo, modelo N1, Atago®. Os valores de pH variaram de 2,85(controle positivo) a 6,41(controle negativo), estando as demais bebidas abaixo do pH 3,85. Os resultados para condutividade elétrica variaram de 81 mS.cm-1 (controle negativo) a 1.004 mS.cm-1 (H2OH!® limão e tangerina). Com relação aos SST, todas as bebidas, com exceção da Água Tônica Antárctica® (7,5 °Brix), tiveram valor 0 °Brix. Com base na metodologia adotada e nos resultados obtidos, observou-se que as bebidas analisadas neste estudo revelaram-se potencialmente erosivas.


The increasing consumption of sugar beverages and with acidic pH has been considered a factor of risk for the development of injuries in dental surfaces. Therefore, the objective of this study was to evaluate the pH, the electrical conductivity and the amount of Total Soluble Solids (SST) of carbonated beverages commercialized in the city of João Pessoa - PB. The sample was formed by the following products Aquarius Regular®, Aquarius Fresh® lemon, H2OH!® lemon, H2OH!® lemon and tangerine, Aquazero® lemon, Sparkling Mineral Water Schincariol®, Antartic Tonic Water® (positive control) and Still Mineral Water Schincariol® (negative control). The evaluation of pH was performed by the use of a digital pH meter, model pH 300, brand Analyser®. The electrical conductivity was determined by a bench conductivimeter, model 600 of the Analyzer®. For the quantification of Total Soluble Solids or °Brix was used a specific refractometer of , model N1, Atago®. The pH values varied from 2.85 (positive control) to 6.41 (negative control), and the other beverages had pH below 3.85. The results for electrical conductivity varied from 81 mS.cm-1 (negative control) to 1,004 mS.cm-1 (H2OH!® lemon and tangerine). About the SST, all the beverages, except the Antarctic Tonic Water® (7.5 °Brix) had value 0 °Brix. Based on the methodology adopted and the results obtained, it was observed that the beverages analyzed in this study proved to be potentially erosive.


Subject(s)
In Vitro Techniques , Tooth Demineralization , Hydrogen-Ion Concentration , Carbonated Beverages , Diet , Tooth Erosion , Drinking
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