cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7511573
title: Comparative analysis between resin sealant and ionomer by scanning electron microscope

description: AbstractIntroductionThe sealing of occlusal surfaces as an effective procedure in the prevention of dental caries, its recognition since 1976 by ADA, has been used as a preventive, safe and effective method.ObjectiveThis study aimed at analyzing the products used as pit and fissure sealant of human teeth, which noted concern, is the property of penetration and porosity viewed in the scanning electron microscope (SEM).Material and methodThere was sealing of 40 pre-molars, previously submitted to prophylaxis with pumice stone and water and separated into two groups of twenty teeth each. In one of the groups was used sealant polymerized by light Fluroshield ® and in another, glass ionomer cement Vidrion R ® and ten remaining teeth as control. After those procedures are implemented, the teeth were cutted transversely by precision saw, samples were cleaned, fixed and then observed in SEM.ResultAs a result, the resin sealant fotopolimerizável showed greater penetration in 71.5% of the samples, reaching the region's deep fissure, and better adherence and less porosity, while the glass ionomer cement, used as a sealant, had higher porosity and in none of the samples struck the fissure deeper region.ConclusionThe resin sealant has better properties in the questions discussed.
DOI: 10.6084/m9.figshare.7511573.v1
title: Comparative analysis between resin sealant and ionomer by scanning electron microscope

description: AbstractIntroductionThe sealing of occlusal surfaces as an effective procedure in the prevention of dental caries, its recognition since 1976 by ADA, has been used as a preventive, safe and effective method.ObjectiveThis study aimed at analyzing the products used as pit and fissure sealant of human teeth, which noted concern, is the property of penetration and porosity viewed in the scanning electron microscope (SEM).Material and methodThere was sealing of 40 pre-molars, previously submitted to prophylaxis with pumice stone and water and separated into two groups of twenty teeth each. In one of the groups was used sealant polymerized by light Fluroshield ® and in another, glass ionomer cement Vidrion R ® and ten remaining teeth as control. After those procedures are implemented, the teeth were cutted transversely by precision saw, samples were cleaned, fixed and then observed in SEM.ResultAs a result, the resin sealant fotopolimerizável showed greater penetration in 71.5% of the samples, reaching the region's deep fissure, and better adherence and less porosity, while the glass ionomer cement, used as a sealant, had higher porosity and in none of the samples struck the fissure deeper region.ConclusionThe resin sealant has better properties in the questions discussed.
DOI: 10.6084/m9.figshare.7511480
title: The biocompatibility of a new endodontic paste used in dental trauma

description: AbstractObjectiveThis study investigated the short-term subcutaneous tissue reaction of a new endodontic paste, based on the association among calcium hydroxide [Ca(OH)2], 2% chlorhexidine gel (CHX) and zinc oxide (ZnO) in comparison with a control paste, and the individual substances alone.Material and methodTwenty-four male wistar rats were used. Polyethylene tubes containing the materials were implanted into the dorsal connective tissue of rats. Empty implanted tubes served as controls. The materials used were: Ca(OH)2+CHX+ZnO paste in two different proportions (2:1:2) and (2:1:3), a control paste, Ca(OH)2+CHX (2:1), and the substances alone. After time intervals of 2, 3, 7 and 15 days, the animals were euthanized and the specimens prepared for histological processing. Data were evaluated qualitatively according to the levels of tissue repair and the degree of inflammation.ResultOn the second day all the materials were observed to cause a severe inflammatory response. On the third day, the pastes Ca(OH)2+CHX+ZnO (2:1:2) and (2:1:3) showed reduction in degree of inflammation. On seventh day the tissue was already more organized with presence of collagen fibers in all materials. After 15 days it was found that compound Ca(OH)2+CHX+ZnO (2:1:2) showed areas with no inflammatory infiltrate.ConclusionThe experimental pastes, Ca(OH)2+CHX+ZnO in two different proportions (2:1:2) and (2:1:3), showed favorable results with respect to biocompatibility, when evaluated for a short-term.
DOI: 10.6084/m9.figshare.7511480.v1
title: The biocompatibility of a new endodontic paste used in dental trauma

description: AbstractObjectiveThis study investigated the short-term subcutaneous tissue reaction of a new endodontic paste, based on the association among calcium hydroxide [Ca(OH)2], 2% chlorhexidine gel (CHX) and zinc oxide (ZnO) in comparison with a control paste, and the individual substances alone.Material and methodTwenty-four male wistar rats were used. Polyethylene tubes containing the materials were implanted into the dorsal connective tissue of rats. Empty implanted tubes served as controls. The materials used were: Ca(OH)2+CHX+ZnO paste in two different proportions (2:1:2) and (2:1:3), a control paste, Ca(OH)2+CHX (2:1), and the substances alone. After time intervals of 2, 3, 7 and 15 days, the animals were euthanized and the specimens prepared for histological processing. Data were evaluated qualitatively according to the levels of tissue repair and the degree of inflammation.ResultOn the second day all the materials were observed to cause a severe inflammatory response. On the third day, the pastes Ca(OH)2+CHX+ZnO (2:1:2) and (2:1:3) showed reduction in degree of inflammation. On seventh day the tissue was already more organized with presence of collagen fibers in all materials. After 15 days it was found that compound Ca(OH)2+CHX+ZnO (2:1:2) showed areas with no inflammatory infiltrate.ConclusionThe experimental pastes, Ca(OH)2+CHX+ZnO in two different proportions (2:1:2) and (2:1:3), showed favorable results with respect to biocompatibility, when evaluated for a short-term.
DOI: 10.6084/m9.figshare.7510973
title: Effect of 10% sodium bicarbonate on bond strength of enamel and dentin after bleaching with 38% hydrogen peroxide

description: AbstractIntroductionBy-products of hydrogen peroxide degradation released during dental bleaching influence the polymerization of adhesive systems and composite resins, causing a reduction in shear bond strength to the tooth.Objectivethe aim of this article was to evaluate the effect of 10% sodium bicarbonate (SB), applied for different lengths of time, on the shear bond strength to enamel and dentin after bleaching.Material and methodEnamel and dentin blocks were divided into groups (n=10): (1) control: no bleaching; (2) immediate: bleaching immediately followed by restoration; (3) 14-day: bleaching, restoration 14 days later; (4) SB for 10 minutes: bleaching, SB gel for 10 minutes, immediately followed by restoration; (5) SB for 20 minutes: bleaching, SB gel for 20 minutes, immediately followed by restoration. A 38% hydrogen peroxide gel (Opalescence Boost/Ultradent) was used. After application of the adhesive system, composite resin cylinders were mounted on the surface of the substrates in order to test shear bond strength. Result: ANOVA and Tukey tests showed significantly higher mean enamel bond strength values for the 14-day follow-up group and without significant differences for control group. Mean bond strength values obtained for the other groups were intermediate. When testing dentin, the Tukey test revealed a significantly higher mean bond strength value for the 14-day follow-up group when compared with application of SB for 20 minutes.ConclusionSB gel applied was unable to reverse the low bond strength to enamel and dentin after bleaching treatment.
DOI: 10.6084/m9.figshare.7510973.v1
title: Effect of 10% sodium bicarbonate on bond strength of enamel and dentin after bleaching with 38% hydrogen peroxide

description: AbstractIntroductionBy-products of hydrogen peroxide degradation released during dental bleaching influence the polymerization of adhesive systems and composite resins, causing a reduction in shear bond strength to the tooth.Objectivethe aim of this article was to evaluate the effect of 10% sodium bicarbonate (SB), applied for different lengths of time, on the shear bond strength to enamel and dentin after bleaching.Material and methodEnamel and dentin blocks were divided into groups (n=10): (1) control: no bleaching; (2) immediate: bleaching immediately followed by restoration; (3) 14-day: bleaching, restoration 14 days later; (4) SB for 10 minutes: bleaching, SB gel for 10 minutes, immediately followed by restoration; (5) SB for 20 minutes: bleaching, SB gel for 20 minutes, immediately followed by restoration. A 38% hydrogen peroxide gel (Opalescence Boost/Ultradent) was used. After application of the adhesive system, composite resin cylinders were mounted on the surface of the substrates in order to test shear bond strength. Result: ANOVA and Tukey tests showed significantly higher mean enamel bond strength values for the 14-day follow-up group and without significant differences for control group. Mean bond strength values obtained for the other groups were intermediate. When testing dentin, the Tukey test revealed a significantly higher mean bond strength value for the 14-day follow-up group when compared with application of SB for 20 minutes.ConclusionSB gel applied was unable to reverse the low bond strength to enamel and dentin after bleaching treatment.
DOI: 10.6084/m9.figshare.7511000
title: Periodontal health in patients under conventional and lingual orthodontic therapies

description: AbstractObjectiveSome clinical periodontal health parameters were assessed comparatively in patients using conventional and lingual brackets.Material and methodA trained examiner registered the frequencies of visible plaque (VP), bleeding on probing (BOP), as well as the simplified oral hygiene (OHI-S) and modified gingival (MGI) indices in 83 subjects from two clinics. The effects of orthodontic treatments on periodontal health were analyzed using logistic regression (α = 0.05).ResultIn the conventional group, the frequency of visible plaque was significantly higher on the buccal surfaces of anterior (OR = 12.5) and maxillary posterior (OR = 3.6) teeth, p &lt; 0.01. BOP in posterior teeth was also more frequent in this group, p &lt; 0.05. The lingual group presented higher frequency of visible plaque on the lingual surfaces of anterior teeth (OR = 4.3; p = 0.0034). The conventional group had significantly higher frequencies of mild gingivitis in the buccal regions of anterior (OR = 9.0) and maxillary posterior (OR = 16.7) teeth, p &lt; 0.05, and anterior papillae (OR = 9.0; p = 0.0003). On the other hand, the lingual group evidenced mild gingivitis more often in the lingual regions of anterior teeth (OR = 54.5), p &lt; 0.01.ConclusionBased on the results of this study, the clinical periodontal health conditions may be considered acceptable for patients using both conventional and lingual brackets.
DOI: 10.6084/m9.figshare.7511000.v1
title: Periodontal health in patients under conventional and lingual orthodontic therapies

description: AbstractObjectiveSome clinical periodontal health parameters were assessed comparatively in patients using conventional and lingual brackets.Material and methodA trained examiner registered the frequencies of visible plaque (VP), bleeding on probing (BOP), as well as the simplified oral hygiene (OHI-S) and modified gingival (MGI) indices in 83 subjects from two clinics. The effects of orthodontic treatments on periodontal health were analyzed using logistic regression (α = 0.05).ResultIn the conventional group, the frequency of visible plaque was significantly higher on the buccal surfaces of anterior (OR = 12.5) and maxillary posterior (OR = 3.6) teeth, p &lt; 0.01. BOP in posterior teeth was also more frequent in this group, p &lt; 0.05. The lingual group presented higher frequency of visible plaque on the lingual surfaces of anterior teeth (OR = 4.3; p = 0.0034). The conventional group had significantly higher frequencies of mild gingivitis in the buccal regions of anterior (OR = 9.0) and maxillary posterior (OR = 16.7) teeth, p &lt; 0.05, and anterior papillae (OR = 9.0; p = 0.0003). On the other hand, the lingual group evidenced mild gingivitis more often in the lingual regions of anterior teeth (OR = 54.5), p &lt; 0.01.ConclusionBased on the results of this study, the clinical periodontal health conditions may be considered acceptable for patients using both conventional and lingual brackets.
DOI: 10.6084/m9.figshare.7508111
title: Personal perception of assessment for the condition of halitosis and clinical confirmation

description: AbstractIntroductionHalitosis is a condition characterized by unpleasant breath,affecting thousands of people and causing a negative impact on them.ObjectiveThe aim of this study was to evaluate self-perception of halitosis condition by applying a specific questionnaire and having clinical evaluation.Material and methodThe sample was composed by 59 randomly selected voluntaries between the ages of 20 and 60 years old who were users of Basic Health Units of Araraquara. The methodologies applied were: 1. Signature of informed consent; 2. Application of standardized questionnaire specially designed for this research; 3. Clinical confirmation through halimeter (Tanita Breath Alert CHC-212S). After the experimental phase, all the volunteers received a document with general information about halitosis (causes and treatment). The results were grouped in Microsoft Excel tables and analyzed by Chi-square test.Result and conclusionAfter the analyses, it was concluded that people had lost the ability to perceive their own breath when they had halitosis and they are unable to evaluate themselves effectively; the risky factors that influenced the halitosis were: people over the age of 40, the use some types of drugs, some diseases, frequency of visit to the dentist and poor oral hygiene including bad-technique procedures such as teeth brushing, flossing, tongue cleaning and dentures cleaning. Other factors studied were not statistically sufficient to influence halitosis.
DOI: 10.6084/m9.figshare.7508111.v1
title: Personal perception of assessment for the condition of halitosis and clinical confirmation

description: AbstractIntroductionHalitosis is a condition characterized by unpleasant breath,affecting thousands of people and causing a negative impact on them.ObjectiveThe aim of this study was to evaluate self-perception of halitosis condition by applying a specific questionnaire and having clinical evaluation.Material and methodThe sample was composed by 59 randomly selected voluntaries between the ages of 20 and 60 years old who were users of Basic Health Units of Araraquara. The methodologies applied were: 1. Signature of informed consent; 2. Application of standardized questionnaire specially designed for this research; 3. Clinical confirmation through halimeter (Tanita Breath Alert CHC-212S). After the experimental phase, all the volunteers received a document with general information about halitosis (causes and treatment). The results were grouped in Microsoft Excel tables and analyzed by Chi-square test.Result and conclusionAfter the analyses, it was concluded that people had lost the ability to perceive their own breath when they had halitosis and they are unable to evaluate themselves effectively; the risky factors that influenced the halitosis were: people over the age of 40, the use some types of drugs, some diseases, frequency of visit to the dentist and poor oral hygiene including bad-technique procedures such as teeth brushing, flossing, tongue cleaning and dentures cleaning. Other factors studied were not statistically sufficient to influence halitosis.
DOI: 10.6084/m9.figshare.7508105.v1
title: Characterization of the oral health of transplant-ready chronic kidney disease patients

description: AbstractIntroductionChronic kidney disease (CKD) promotes salivary alterations that impact oral health. Post-transplantation immunosuppression could lead to localized mouth conditions becoming systemic.ObjectiveTo characterize the oral health of transplant-ready CKD patients by evaluating salivary flow and pH, salivary buffering capacity (SBC), oral lesions, gingival bleeding, calculus, and index of decayed, missing and filled teeth (DMFT).Material and methodIn the present cross-sectional, observational, and analytic study, spontaneous saliva was collected from 83 volunteers, with hyposalivation defined as &lt; 0.3 mL/min. Salivary pH was measured using a test strip and considered alkaline when &gt; 7. Ericsson's technique was used to assess SBC. A single trained examiner conducted the clinical assessments. Fisher's exact test, ANOVA, and linear regression were used in the statistical analysis, with a level of significance of 0.05 and 95% confidence interval.ResultHyposalivation occurred in 61% of the sample and was influenced by interdialytic fluid gains (p = 0.01). The presence of alkaline salivary pH was influenced by serum urea (p &lt; 0.01) and hyperphosphatemia (p = 0.01). Salivary buffering capacity was optimal in 92% of patients and was influenced by salivary pH (p = 0.02). Three individuals exhibited infectious oral lesions. Gingival bleeding occurred in 55%, calculus in 94%, and caries in 88% of patients. The DMFT index of the sample was 17.9 ± 7.48.ConclusionThe participants' oral health was considered poor; this condition can worsen if these individuals undergo transplantation. The importance of having a dentist in the team assisting the CKD patient is paramount.
DOI: 10.6084/m9.figshare.7508105
title: Characterization of the oral health of transplant-ready chronic kidney disease patients

description: AbstractIntroductionChronic kidney disease (CKD) promotes salivary alterations that impact oral health. Post-transplantation immunosuppression could lead to localized mouth conditions becoming systemic.ObjectiveTo characterize the oral health of transplant-ready CKD patients by evaluating salivary flow and pH, salivary buffering capacity (SBC), oral lesions, gingival bleeding, calculus, and index of decayed, missing and filled teeth (DMFT).Material and methodIn the present cross-sectional, observational, and analytic study, spontaneous saliva was collected from 83 volunteers, with hyposalivation defined as &lt; 0.3 mL/min. Salivary pH was measured using a test strip and considered alkaline when &gt; 7. Ericsson's technique was used to assess SBC. A single trained examiner conducted the clinical assessments. Fisher's exact test, ANOVA, and linear regression were used in the statistical analysis, with a level of significance of 0.05 and 95% confidence interval.ResultHyposalivation occurred in 61% of the sample and was influenced by interdialytic fluid gains (p = 0.01). The presence of alkaline salivary pH was influenced by serum urea (p &lt; 0.01) and hyperphosphatemia (p = 0.01). Salivary buffering capacity was optimal in 92% of patients and was influenced by salivary pH (p = 0.02). Three individuals exhibited infectious oral lesions. Gingival bleeding occurred in 55%, calculus in 94%, and caries in 88% of patients. The DMFT index of the sample was 17.9 ± 7.48.ConclusionThe participants' oral health was considered poor; this condition can worsen if these individuals undergo transplantation. The importance of having a dentist in the team assisting the CKD patient is paramount.
DOI: 10.6084/m9.figshare.7517177.v1
title: Influence of elastic chain in the degradation of orthodontic forces - in vitro study

description: AbstractIntroductionElastic chains are indispensable accessories in orthodontic treatment. Changes in their properties are of great interest to professionals in order to gain greater control over tooth movements.ObjectiveEvaluate the influence of trademark and length of the spacer chain on force degradation of elastic.Material and methodWe used the following elastic chain types: TP, Rocky Mountain (RMO) and GAC short, medium and long varieties. The elastics, which contained links corresponding to 12.5 mm, were tensioned between steel pins using Instron 4411 universal testing machine up to 25 mm. The value was recorded. After initial measurement of the force, the elastics were fixed on an acrylic resin plate and kept distended to 25 mm. They were inserted in a container with deionized water and kept in an incubator at 37º. The elastic force data was collected at time intervals of 24 hours, 48 hours, 7 days, 14 days, 21 days and 28 days. These records were subjected to an appropriate statistical test, with significance level of 5%.ResultTP elastics showed significantly higher force in all periods. RMO and GAC elastics showed similar elastic forces. Short and long TP elastics exhibited significantly higher strength than the average elastic chain. As regards GAC and RMO, short elastics showed higher than average force values, and higher values than the long type.ConclusionThe spacer chain and the brand influenced the results, reinforcing the importance of knowledge of different types of elastic.
DOI: 10.6084/m9.figshare.7517177
title: Influence of elastic chain in the degradation of orthodontic forces - in vitro study

description: AbstractIntroductionElastic chains are indispensable accessories in orthodontic treatment. Changes in their properties are of great interest to professionals in order to gain greater control over tooth movements.ObjectiveEvaluate the influence of trademark and length of the spacer chain on force degradation of elastic.Material and methodWe used the following elastic chain types: TP, Rocky Mountain (RMO) and GAC short, medium and long varieties. The elastics, which contained links corresponding to 12.5 mm, were tensioned between steel pins using Instron 4411 universal testing machine up to 25 mm. The value was recorded. After initial measurement of the force, the elastics were fixed on an acrylic resin plate and kept distended to 25 mm. They were inserted in a container with deionized water and kept in an incubator at 37º. The elastic force data was collected at time intervals of 24 hours, 48 hours, 7 days, 14 days, 21 days and 28 days. These records were subjected to an appropriate statistical test, with significance level of 5%.ResultTP elastics showed significantly higher force in all periods. RMO and GAC elastics showed similar elastic forces. Short and long TP elastics exhibited significantly higher strength than the average elastic chain. As regards GAC and RMO, short elastics showed higher than average force values, and higher values than the long type.ConclusionThe spacer chain and the brand influenced the results, reinforcing the importance of knowledge of different types of elastic.