cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.6273179.v1
title: Perception of dentists, dental students, and patients on dentogingival aesthetics

description: Abstract Introduction Patients’ demand for dentogingival aesthetics has increased significantly in recent years, and this is a complex concept due to numerous factors involved in obtaining patient/professional satisfaction. Some dentogingival features may alter smile harmony, such as excessive gingival display. Objective To evaluate whether the presence of gingival display has a negative influence on the perception of dentogingival aesthetics. Material and method 180 individuals (60 dentists, 60 dental students, and 60 patients) evaluated images of volunteer smiles. These images were digitally altered by the Adobe Photoshop™ software, creating different situations of gingival display (4 mm, 2 mm, 0 mm, -2 mm, -4 mm), and graded by the evaluators with the following scores: (01) very pleasant smile, (02) pleasant smile, and 03) unpleasant smile. The scores assigned were analyzed using ANOVA (α=0.05). Result Gingival displays between 0 and 2 mm were considered aesthetically pleasing. Changes of -4 and +4 mm were defined as the most disharmonious smiles. The 0-mm female smile was considered the most harmonious for dentists (1.51) and dental students (1.77), by Student's t test (p&lt;0.05). In the opinion of patients, the smile of +2 mm was considered the most aesthetic. In the image evaluations of men, the 0-mm smile was considered the most aesthetic (p &lt;0.05) for dentists (1.85) and dental students (1.62). The patients considered +2 mm of gingival display the most harmonious smile. Conclusion The aesthetic perception of dental students and dentists was different when compared to the group of patients.
DOI: 10.6084/m9.figshare.6273194
title: Evaluation of ionic dissociation of calcium hydroxide associated with Aloe vera as vehicle

description: Abstract Introduction Calcium hydroxide is considered an intracanal medication gold standard, and different substances can be employed as a vehicle to improve its properties. Aloe vera is a herbal remedy popularly known as babosa and is notable for its immunoregulatory, antimicrobial, healing and cellular biocompatibility. Objective To evaluate the ionic dissociation of calcium hydroxide, with the Aloe vera as vehicle. Material and method The extract of Aloe vera was obtained directly from the leaf, submitted to filtration and stored in a sterile falcon tube. Two groups of intracanal medication were prepared; the control group, with calcium hydroxide and saline; and the experimental group, with calcium hydroxide and Aloe vera as vehicle. Result There was no statistically significant difference between the means of calcium release from the groups (p = 0.944). When comparing the paired values, considering the different evaluations over time, a statistically significant difference (p = 0.015) was identified for the experimental group, so that mean values of calcium released were higher up to the 21st day of the study. Conclusion Calcium hydroxide, when associated with Aloe vera, presented higher ionic dissociation than when used with distilled water. This result, combined with the inherent properties of this herbal remedy, suggests that the paste of calcium hydroxide and Aloe vera can be a viable and promising alternative as intracanal medication and improve apical and periapical repair.
DOI: 10.6084/m9.figshare.6273194.v1
title: Evaluation of ionic dissociation of calcium hydroxide associated with Aloe vera as vehicle

description: Abstract Introduction Calcium hydroxide is considered an intracanal medication gold standard, and different substances can be employed as a vehicle to improve its properties. Aloe vera is a herbal remedy popularly known as babosa and is notable for its immunoregulatory, antimicrobial, healing and cellular biocompatibility. Objective To evaluate the ionic dissociation of calcium hydroxide, with the Aloe vera as vehicle. Material and method The extract of Aloe vera was obtained directly from the leaf, submitted to filtration and stored in a sterile falcon tube. Two groups of intracanal medication were prepared; the control group, with calcium hydroxide and saline; and the experimental group, with calcium hydroxide and Aloe vera as vehicle. Result There was no statistically significant difference between the means of calcium release from the groups (p = 0.944). When comparing the paired values, considering the different evaluations over time, a statistically significant difference (p = 0.015) was identified for the experimental group, so that mean values of calcium released were higher up to the 21st day of the study. Conclusion Calcium hydroxide, when associated with Aloe vera, presented higher ionic dissociation than when used with distilled water. This result, combined with the inherent properties of this herbal remedy, suggests that the paste of calcium hydroxide and Aloe vera can be a viable and promising alternative as intracanal medication and improve apical and periapical repair.
DOI: 10.6084/m9.figshare.6273362
title: Influence of a new method of sterilization on the morphology and physical properties of extracted human teeth

description: Abstract Introduction Sterilization methods adopted in Human Teeth Bank can promote structural changes in enamel and dentin. Thus, the ideal method should combine the antimicrobial efficacy and preservation of the substrate biomechanical properties. Aim Evaluated the morphology and physical properties of enamel and dentin of extracted human teeth, after being submitted to different sterilization methods. Method Sixteen extracted third molars were sectioned in the following tooth regions: mesio-distal, vestibular-lingual and at the cement enamel junction. Forty specimens were selected according to values of microhardness and roughness initials, and distributed in four experimental groups (n = 10/group): Group 1 = Autoclave 121 °C (30 minutes); Group 2 = 2.5% Sodium hypochlorite (07 days); Group 3 = 5.25% Sodium hypochlorite (07 days); Group 4= 30% Acetic Acid (7 days). After sterilization, the microhardness, roughness and morphology of enamel and dentin were evaluated. Data were analyzed by paired t-test, Wilcoxon, Kruskal-Wallis and Analysis of Variance. A significance level of 5% was adopted. Result All sterilization methods altered the microhardness and roughness of the dentine (p &lt;0.05). Regarding to enamel, the microhardness was affected only by Autoclave and 2.5% Sodium hypochlorite treatment (p &lt;0.05). A large aperture of the enamel pores and dentinal tubules was verified in the micrographs. Conclusion The sterilization methods adopted altered the morphology and/or physical properties of enamel and dentine.
DOI: 10.6084/m9.figshare.6273362.v1
title: Influence of a new method of sterilization on the morphology and physical properties of extracted human teeth

description: Abstract Introduction Sterilization methods adopted in Human Teeth Bank can promote structural changes in enamel and dentin. Thus, the ideal method should combine the antimicrobial efficacy and preservation of the substrate biomechanical properties. Aim Evaluated the morphology and physical properties of enamel and dentin of extracted human teeth, after being submitted to different sterilization methods. Method Sixteen extracted third molars were sectioned in the following tooth regions: mesio-distal, vestibular-lingual and at the cement enamel junction. Forty specimens were selected according to values of microhardness and roughness initials, and distributed in four experimental groups (n = 10/group): Group 1 = Autoclave 121 °C (30 minutes); Group 2 = 2.5% Sodium hypochlorite (07 days); Group 3 = 5.25% Sodium hypochlorite (07 days); Group 4= 30% Acetic Acid (7 days). After sterilization, the microhardness, roughness and morphology of enamel and dentin were evaluated. Data were analyzed by paired t-test, Wilcoxon, Kruskal-Wallis and Analysis of Variance. A significance level of 5% was adopted. Result All sterilization methods altered the microhardness and roughness of the dentine (p &lt;0.05). Regarding to enamel, the microhardness was affected only by Autoclave and 2.5% Sodium hypochlorite treatment (p &lt;0.05). A large aperture of the enamel pores and dentinal tubules was verified in the micrographs. Conclusion The sterilization methods adopted altered the morphology and/or physical properties of enamel and dentine.
DOI: 10.6084/m9.figshare.6272993
title: Effect of glutamine ingestion on the progression of induced periodontitis: experimental study in rats

description: Abstract Introduction With glutamine supplementation there is better performance in the body’s defense system. Objective The aim of this study was to analyze the effect of glutamine supplementation on ligand-induced periodontal disease in rats. Material and method 48 selected male Wistar rats were divided into 4 groups (N = 12): control group (CG) including healthy animals receiving daily saline solution via gavage; glutamine group (GG) including healthy animals receiving oral glutamine supplementation by gavage at a dose of 1.5 g / kg / day; periodontitis group (PG) including animals with induced periodontal disease on both upper sides receiving daily saline solution via gavage; experimental group (EG) including animals with induced periodontal disease on both upper sides receiving daily glutamine via gavage at a dose of 1.5 g / kg / day. On the 30th day, all animals were euthanized by excess anesthetic. Result In the various analyses, the EG (116.63 ± 22.50 mm2) compared to the CG (82.32 ± 7.48 mm2) obtained a p&lt;0.05. The PG (143.15 ± 35.24 mm2) compared to the EG group (116.63 ± 22.50 mm2 ) presented a p&lt;0.05. The PG (143.15 ± 35.24 mm2) compared to the CG (82.32 ± 7.48 mm2) presented a p&lt;0.05. The GG (118.09 ± 10.4 mm2) compared to the CG (82.32 ± 7.48 mm2) presented a p&gt;0.05. Conclusion Glutamine supplementation associated with induced periodontal disease demonstrated a smaller amount of bone loss compared to the periodontitis group.
DOI: 10.6084/m9.figshare.6272993.v1
title: Effect of glutamine ingestion on the progression of induced periodontitis: experimental study in rats

description: Abstract Introduction With glutamine supplementation there is better performance in the body’s defense system. Objective The aim of this study was to analyze the effect of glutamine supplementation on ligand-induced periodontal disease in rats. Material and method 48 selected male Wistar rats were divided into 4 groups (N = 12): control group (CG) including healthy animals receiving daily saline solution via gavage; glutamine group (GG) including healthy animals receiving oral glutamine supplementation by gavage at a dose of 1.5 g / kg / day; periodontitis group (PG) including animals with induced periodontal disease on both upper sides receiving daily saline solution via gavage; experimental group (EG) including animals with induced periodontal disease on both upper sides receiving daily glutamine via gavage at a dose of 1.5 g / kg / day. On the 30th day, all animals were euthanized by excess anesthetic. Result In the various analyses, the EG (116.63 ± 22.50 mm2) compared to the CG (82.32 ± 7.48 mm2) obtained a p&lt;0.05. The PG (143.15 ± 35.24 mm2) compared to the EG group (116.63 ± 22.50 mm2 ) presented a p&lt;0.05. The PG (143.15 ± 35.24 mm2) compared to the CG (82.32 ± 7.48 mm2) presented a p&lt;0.05. The GG (118.09 ± 10.4 mm2) compared to the CG (82.32 ± 7.48 mm2) presented a p&gt;0.05. Conclusion Glutamine supplementation associated with induced periodontal disease demonstrated a smaller amount of bone loss compared to the periodontitis group.
DOI: 10.6084/m9.figshare.6273014
title: Survival analysis of ART restorations in primary molars of preschool children: 1 year follow-up

description: Abstract Among the minimally invasive approaches available today, the atraumatic restorative treatment (ART) has demonstrated promising results both in the primary and permanent dentition. Objective To evaluate the survival of Class I ART restorations in preschoolers with two Brazilian brands of glass ionomer cements (GIC) in comparison with a reference GIC. Material and method The cavities of 49 preschool children (three to five years) with carious lesions in the posterior teeth (N=81) were filled by two experienced pediatric dentists according to the ART technique. The Brazilian GICs Maxxion-R (MR) and Vitro-Fil LC (VF), and the reference GIC Ketac-Molar (KM) were placed in a randomly pre-established sequence. Restorations were evaluated after 6 and 12 months by another investigator. Scores 0 and 1 were considered successful, while scores 3-9 were classified as failures. Kaplan-Meier survival analysis and the log-rank test were performed (p&lt;0.05). Result No statistically significant differences in survival rates of the tested GIC were observed after 12 months. Conclusion The clinical performance the low-cost Brazilian GICs MR and VF observed after 12 months suggests that they may be an alternative for Class I ART restorations to safeguard the natural exfoliation of primary teeth. However, until further studies involving a larger number of restorations and longer follow-up periods are conducted, reference GIC such as KM should continue to be the material of choice for ART restorations.
DOI: 10.6084/m9.figshare.6273014.v1
title: Survival analysis of ART restorations in primary molars of preschool children: 1 year follow-up

description: Abstract Among the minimally invasive approaches available today, the atraumatic restorative treatment (ART) has demonstrated promising results both in the primary and permanent dentition. Objective To evaluate the survival of Class I ART restorations in preschoolers with two Brazilian brands of glass ionomer cements (GIC) in comparison with a reference GIC. Material and method The cavities of 49 preschool children (three to five years) with carious lesions in the posterior teeth (N=81) were filled by two experienced pediatric dentists according to the ART technique. The Brazilian GICs Maxxion-R (MR) and Vitro-Fil LC (VF), and the reference GIC Ketac-Molar (KM) were placed in a randomly pre-established sequence. Restorations were evaluated after 6 and 12 months by another investigator. Scores 0 and 1 were considered successful, while scores 3-9 were classified as failures. Kaplan-Meier survival analysis and the log-rank test were performed (p&lt;0.05). Result No statistically significant differences in survival rates of the tested GIC were observed after 12 months. Conclusion The clinical performance the low-cost Brazilian GICs MR and VF observed after 12 months suggests that they may be an alternative for Class I ART restorations to safeguard the natural exfoliation of primary teeth. However, until further studies involving a larger number of restorations and longer follow-up periods are conducted, reference GIC such as KM should continue to be the material of choice for ART restorations.
DOI: 10.6084/m9.figshare.7517765
title: Effect of different mouthwashes on microhardness of photopolymerizable composite resins

description: Abstract Introduction In dentistry, resins are used as restorative materials for the reconstruction of aesthetics, function and shape of teeth. Aim To evaluate in vitro the microhardness of Filtek Z350 XT® and Filtek Z250 XT® resins subjected to direct contact when exposed to mouthwashes. Material and method Ten specimens were prepared in a nylon matrix in two increments and photoactivated for 20s. The homogeneity of the sample was verified through the Mann-Whitney and Kruskal-Wallis tests and a parametric variance was performed (ANOVA), and for Tukey significance analysis (α=5%). Result The highest mean value was presented by group G1 (Filtek Z350 XT- distilled water- control) – 138.22 (±21.8), and the least values were from group G9 (Filtek Z250 XT- Chamomile Solution) – 87.12 (±4.39) and the G10 group (Filtek Z250 XT – Pomegranate solution) – 99.32 (±11.10). Filtek Z350 XT resin was superior to Filtek Z250 XT (p=0.015). Conclusion Filtek Z350 XT resin presented better results than Filtek Z250 XT.
DOI: 10.6084/m9.figshare.7517765.v1
title: Effect of different mouthwashes on microhardness of photopolymerizable composite resins

description: Abstract Introduction In dentistry, resins are used as restorative materials for the reconstruction of aesthetics, function and shape of teeth. Aim To evaluate in vitro the microhardness of Filtek Z350 XT® and Filtek Z250 XT® resins subjected to direct contact when exposed to mouthwashes. Material and method Ten specimens were prepared in a nylon matrix in two increments and photoactivated for 20s. The homogeneity of the sample was verified through the Mann-Whitney and Kruskal-Wallis tests and a parametric variance was performed (ANOVA), and for Tukey significance analysis (α=5%). Result The highest mean value was presented by group G1 (Filtek Z350 XT- distilled water- control) – 138.22 (±21.8), and the least values were from group G9 (Filtek Z250 XT- Chamomile Solution) – 87.12 (±4.39) and the G10 group (Filtek Z250 XT – Pomegranate solution) – 99.32 (±11.10). Filtek Z350 XT resin was superior to Filtek Z250 XT (p=0.015). Conclusion Filtek Z350 XT resin presented better results than Filtek Z250 XT.
DOI: 10.6084/m9.figshare.6802469.v1
title: Saliva contamination effect on shear bond strength of ceramic brackets with an orthodontic hydrophilic resin

description: Abstract Introduction Some fator, such as the presence of saliva, are able to influence the adhesion of the bracket to the tooth enamel during the orthodontic bonding procedure and may cause the adhesive failure. Objective The aim of this study was to evaluate the shear strength of orthodontic ceramic brackets bonded with Transbond XT and Transbond Plus Color Change to bovine teeth, under saliva contamination and the adhesive failure mode. Material and method Sixty bovine permanent incisors were randomly divided into 4 groups (n=15) according to bonding material and saliva contamination: Group 1 (G1) bonded with Transbond XT with no saliva contamination; Group 2 (G2) bonded with Self Etching Primer and Transbond Plus Color Change with no saliva contamination; Group 3 (G3) bonded with Transbond XT with saliva contamination and Group 4 (G4) bonded with Transbond Plus Color Change with saliva contamination. Result The Kruskal-Wallis non-parametric test (p&lt;0,05) was used and showed that G1 differed statistically from G2 and G3. There was no statistical difference between the other groups. The adhesive remnant index (ARI) ranged between 2 and 3 in G1 and between 0 and 1 score in the other groups. Conclusion Saliva contamination decreases the shear bond strength of ceramic brackets bonded with conventional Transbond XT hydrophobic resin. On the other hand, the Transbond Plus Color Change hydrophilic resin associated with a Self Etching Primer, under saliva contamination, provide a sufficient shear bond strength, suitable for their clinical use.
DOI: 10.6084/m9.figshare.6802469
title: Saliva contamination effect on shear bond strength of ceramic brackets with an orthodontic hydrophilic resin

description: Abstract Introduction Some fator, such as the presence of saliva, are able to influence the adhesion of the bracket to the tooth enamel during the orthodontic bonding procedure and may cause the adhesive failure. Objective The aim of this study was to evaluate the shear strength of orthodontic ceramic brackets bonded with Transbond XT and Transbond Plus Color Change to bovine teeth, under saliva contamination and the adhesive failure mode. Material and method Sixty bovine permanent incisors were randomly divided into 4 groups (n=15) according to bonding material and saliva contamination: Group 1 (G1) bonded with Transbond XT with no saliva contamination; Group 2 (G2) bonded with Self Etching Primer and Transbond Plus Color Change with no saliva contamination; Group 3 (G3) bonded with Transbond XT with saliva contamination and Group 4 (G4) bonded with Transbond Plus Color Change with saliva contamination. Result The Kruskal-Wallis non-parametric test (p&lt;0,05) was used and showed that G1 differed statistically from G2 and G3. There was no statistical difference between the other groups. The adhesive remnant index (ARI) ranged between 2 and 3 in G1 and between 0 and 1 score in the other groups. Conclusion Saliva contamination decreases the shear bond strength of ceramic brackets bonded with conventional Transbond XT hydrophobic resin. On the other hand, the Transbond Plus Color Change hydrophilic resin associated with a Self Etching Primer, under saliva contamination, provide a sufficient shear bond strength, suitable for their clinical use.
DOI: 10.6084/m9.figshare.6802472
title: Two nanoparticulate composite resins chromatic effect evaluation submitted to coffee solution

description: Abstract Introduction In a highly social competitive society, aesthetic standards are increasingly refined as the conception and desire of a perfect smile considerably increased the search for dental treatment, with the developing of materials that could propitiate those results. Restorations clinical success includes its longevity, from the functional point of view, with no infiltrations, and aesthetic, through the color conservation and proper surface smoothness. Aim This work analyzes the color change of two nanoparticulate resins: Z350 and Bulk Fill (3M ESPE) and two polishing systems: SofLex Disk and rubber spiral SofLex Disk (3M ESPE), divided in control group (deionized water) and experimental group (coffe), during 21 days. Material and method The resin discs were prepared by a standardized mode and submerged in deionized water for 7 days at 37 °C in incubator before initial color evaluation, followed by the immersion in each solution to final color analysis. Both used a spectrophotometer (CM-700d, Konica Minolta, Osaka, Japan) and ΔE CIELAB scale. Result It was seen that both resins presented color change when exposed to coffee, however the Z350 resin presented a greater variation compared to Bulk Fill resin. Conclusion Although coffee is a dye solution, the polishing systems did not present any effect on chromatic alteration.
DOI: 10.6084/m9.figshare.6802472.v1
title: Two nanoparticulate composite resins chromatic effect evaluation submitted to coffee solution

description: Abstract Introduction In a highly social competitive society, aesthetic standards are increasingly refined as the conception and desire of a perfect smile considerably increased the search for dental treatment, with the developing of materials that could propitiate those results. Restorations clinical success includes its longevity, from the functional point of view, with no infiltrations, and aesthetic, through the color conservation and proper surface smoothness. Aim This work analyzes the color change of two nanoparticulate resins: Z350 and Bulk Fill (3M ESPE) and two polishing systems: SofLex Disk and rubber spiral SofLex Disk (3M ESPE), divided in control group (deionized water) and experimental group (coffe), during 21 days. Material and method The resin discs were prepared by a standardized mode and submerged in deionized water for 7 days at 37 °C in incubator before initial color evaluation, followed by the immersion in each solution to final color analysis. Both used a spectrophotometer (CM-700d, Konica Minolta, Osaka, Japan) and ΔE CIELAB scale. Result It was seen that both resins presented color change when exposed to coffee, however the Z350 resin presented a greater variation compared to Bulk Fill resin. Conclusion Although coffee is a dye solution, the polishing systems did not present any effect on chromatic alteration.