cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7507103.v1
title: Potential contribution of periapical radiographic film image processing for forensic identification

description: ABSTRACT Periapical X-rays are the most common complementary tests in the dental clinic. The indication of image tests in forensic identification depends on the produced X-rays quality. The image processing of conventional radiographs can improve image quality. This study aimed to report the potential contribution of image processing from radiographic films by digitally edited periapical radiographs for case reporting of positive identification. The results of anthropological examinations and dental arches of the victim matched the information transferred by the family of the missing person. The antemortem and postmortem periapical radiographs were digitized on photo scanner (Hewlett-Packard Development Company, HP ScanJet G4050 Photo, United States) and images were processed in Corel PaintShop Pro X4 editing software (Corel Corporation, v14, Canada). The comparison of antemortem and postmortem periapical radiographs digital images allowed to determine 8 concordant points in the contour and delimit the maxillary sinus as well as periodontal and dental structures of the tooth 17. Identification of the individual was possible by digital editing of radiographs in computer software. Editing allowed adjusting image brightness, contrast and sharpness, color temperature and saturation of tooth-jaw structures. Such technological feature effectively contributed to positive identification performed by Forensic Dentistry.
DOI: 10.6084/m9.figshare.7514360
title: Palatal obturator prosthesis: case series

description: ABSTRACT Surgical treatment for palate cancers can result in oral-nasal/sinus communication, which impairs the swallowing, speech and chewing ability of patients with reflux of ingested food into the nasal cavity, reducing their quality of life. This article aims to report how three cancer patients, with different types of palate cancer undergoing partial maxillectomy with oroantral or oral-nasal communication as postoperative sequelae were prosthetically rehabilitated from 2009 to 2015. The prostheses were made by dental-surgeons interns in the service of the Multidisciplinary Residency in Oncological Healthcare of the Hospital School of the Federal University of Pelotas (HE/UFPel). One of the patients is completely edentulous, the second partially toothed and in the third case the patient is totally toothed, only requiring the obturator. The creation of prosthetic rehabilitation followed the steps of conventional prostheses, especially observing the particularities in the planning, molding, installation and adjustment stages of the prosthesis. In all cases there was improvement on speech immediately after the prosthesis installation and patients reported greater ease to feed.
DOI: 10.6084/m9.figshare.7515368
title: Influence of dye and nylon fibers on microwave-cured acrylic resin properties

description: ABSTRACT Objective: The aim of this study is to analyze if both color and nylon fibers have an influence on microwave-cured acrylic resin properties. Methods: Rectangular and disk-shaped specimens were prepared using acrylic resins; medium pink with and without nylon fibers and colorless without nylon fibers. To obtain the rectangular specimens, a stainless steel die was used with the following dimensions: 64 X 10 x 3 mm (± 0.5mm). To obtain disk-shaped specimens, a die 50mm (±0.5mm) in diameter and 0.5mm (±0.05mm) thick was employed. They were randomized to form groups: control (colorless acrylic) and experimental (medium pink, with and without nylon fibers), with each group consisting of ten (10) specimens rectangular in shape and five (5) disk-shaped. They were analyzed in six (6) assays (izod impact strength, n=10; Knoop hardness, n=10; glass transition temperature, n=3; water sorption and solubility, n=5; degree of monomer/polymer conversion, n=1; flexural strength and flexural modulus, n=10). All variables were subjected to the analysis of variance test followed by Tukey's multiple comparison test, at a 5% level of significance. Results: The analysis of the monomer/polymer degree of conversion did not reveal any difference between the three groups of resins (medium pink, with and without nylon fibers and colorless resin); it was approximately 88%. The results did not show significant differences between the groups for each variable (p&gt;0.05). Conclusion: The results showed that color and presence of nylon fibers in acrylic resins did not affect the properties analyzed in this study.
DOI: 10.6084/m9.figshare.7515368.v1
title: Influence of dye and nylon fibers on microwave-cured acrylic resin properties

description: ABSTRACT Objective: The aim of this study is to analyze if both color and nylon fibers have an influence on microwave-cured acrylic resin properties. Methods: Rectangular and disk-shaped specimens were prepared using acrylic resins; medium pink with and without nylon fibers and colorless without nylon fibers. To obtain the rectangular specimens, a stainless steel die was used with the following dimensions: 64 X 10 x 3 mm (± 0.5mm). To obtain disk-shaped specimens, a die 50mm (±0.5mm) in diameter and 0.5mm (±0.05mm) thick was employed. They were randomized to form groups: control (colorless acrylic) and experimental (medium pink, with and without nylon fibers), with each group consisting of ten (10) specimens rectangular in shape and five (5) disk-shaped. They were analyzed in six (6) assays (izod impact strength, n=10; Knoop hardness, n=10; glass transition temperature, n=3; water sorption and solubility, n=5; degree of monomer/polymer conversion, n=1; flexural strength and flexural modulus, n=10). All variables were subjected to the analysis of variance test followed by Tukey's multiple comparison test, at a 5% level of significance. Results: The analysis of the monomer/polymer degree of conversion did not reveal any difference between the three groups of resins (medium pink, with and without nylon fibers and colorless resin); it was approximately 88%. The results did not show significant differences between the groups for each variable (p&gt;0.05). Conclusion: The results showed that color and presence of nylon fibers in acrylic resins did not affect the properties analyzed in this study.
DOI: 10.6084/m9.figshare.7508057
title: Low-intensity laser efficacy in postoperative extraction of third molars

description: ABSTRACT The search for means that enable a better quality of life for postoperative patients should be incessant. The surgical extraction of third molars can result in potential complications such as pain, swelling and trismus, along with discomfort in the recovery phase. Therefore, this narrative review was to analyze, from systematic reviews and randomized clinical trials, the use of low level laser therapy as influencer the clinical state after third molar surgery. Scientific articles were searched through PubMed and Science Direct database. In spite of the evaluated studies have cited the effectiveness of laser therapy such as tissue repair, anti-inflammatory and analgesic, variety of analysis models and diversity of dosimetry leaves a gap on their true efficacy. Based on the research conducted, we suggest the adjuvant use of diode laser GaAlAs with 810 nm (λ), 100 mW constant power and 4 J/cm2 of energy, intra and extra oral form at least three sections to minimize possible occurrences of third molar surgery.
DOI: 10.6084/m9.figshare.7508057.v1
title: Low-intensity laser efficacy in postoperative extraction of third molars

description: ABSTRACT The search for means that enable a better quality of life for postoperative patients should be incessant. The surgical extraction of third molars can result in potential complications such as pain, swelling and trismus, along with discomfort in the recovery phase. Therefore, this narrative review was to analyze, from systematic reviews and randomized clinical trials, the use of low level laser therapy as influencer the clinical state after third molar surgery. Scientific articles were searched through PubMed and Science Direct database. In spite of the evaluated studies have cited the effectiveness of laser therapy such as tissue repair, anti-inflammatory and analgesic, variety of analysis models and diversity of dosimetry leaves a gap on their true efficacy. Based on the research conducted, we suggest the adjuvant use of diode laser GaAlAs with 810 nm (λ), 100 mW constant power and 4 J/cm2 of energy, intra and extra oral form at least three sections to minimize possible occurrences of third molar surgery.
DOI: 10.6084/m9.figshare.7513850
title: Dimensional accuracy of different impression techniques of partially edentulous mandibular arch

description: ABSTRACT Objective: The purpose of this in vitro study was to assess and compare the dimensional accuracy of three impression techniques: 1-step putty/light-body, 2-step putty/light-body, and the monophase technique. Methods: A partially edentulous standard stainless steel mandibular arch cast with reference points on the teeth was used to make the impressions. The anteroposterior and transverse distances were measured. All impressions were made with a polyvinyl siloxane using stock metallic (1- and 2-step putty/light-body techniques) or acrylic resin (monophase technique) trays. The monophase impressions were made using a light-body material and the 1- and 2-step putty/light-body impressions with putty and light-body materials. After impression procedures, the accuracy of each technique was assessed measuring the stone casts (n = 5) poured from the impressions using a microscope at 30x magnification and at 0.5 µm accuracy. The data were analyzed statistically using 2-way ANOVA and Tukey's test (p&lt;0.05). Results: Stone casts made by all techniques had significantly negative linear changes (shrinkage). The anteroposterior distances showed more dimensional changes than the transverse distances. The edentulous side showed more shrinkage than the anteroposterior side. Conclusion: No differences between the impression techniques were found, but significant dimensional changes were observed.
DOI: 10.6084/m9.figshare.7513850.v1
title: Dimensional accuracy of different impression techniques of partially edentulous mandibular arch

description: ABSTRACT Objective: The purpose of this in vitro study was to assess and compare the dimensional accuracy of three impression techniques: 1-step putty/light-body, 2-step putty/light-body, and the monophase technique. Methods: A partially edentulous standard stainless steel mandibular arch cast with reference points on the teeth was used to make the impressions. The anteroposterior and transverse distances were measured. All impressions were made with a polyvinyl siloxane using stock metallic (1- and 2-step putty/light-body techniques) or acrylic resin (monophase technique) trays. The monophase impressions were made using a light-body material and the 1- and 2-step putty/light-body impressions with putty and light-body materials. After impression procedures, the accuracy of each technique was assessed measuring the stone casts (n = 5) poured from the impressions using a microscope at 30x magnification and at 0.5 µm accuracy. The data were analyzed statistically using 2-way ANOVA and Tukey's test (p&lt;0.05). Results: Stone casts made by all techniques had significantly negative linear changes (shrinkage). The anteroposterior distances showed more dimensional changes than the transverse distances. The edentulous side showed more shrinkage than the anteroposterior side. Conclusion: No differences between the impression techniques were found, but significant dimensional changes were observed.
DOI: 10.6084/m9.figshare.7512419
title: Simple bone cyst in a 7-year-old child

description: ABSTRACT The simple bone cyst,or traumatic bone cyst, solitary or idiopathic bone cavity is an intraosseous pseudocyst discovered through a panoramic radiographic examination. Commonly, the SBC is presented as an asymptomatic lesion, radiolucent, unilocular, without cortical expansion, with margins adorning vital tooth roots of the affected region. The literature has recommended that clinical and radiographic aspects of simple bone cyst are quite convincing as to diagnosis, so follow-up through clinical and radiographic examination has been suggested. This case illustrates an exuberant clinical case of simple bone cyst, which was presented as multilocular and expansive lesion in a 7-year-old patient. Surgical exploration was performed because her parents were anxious about the presumptive diagnosis of other more aggressive lesions. The diagnosis of SBC was confirmed. The case was monitored and, after three years, total bone remodeling of the affected area was observed. In conclusion, asymptomatic radiolucent lesions that suggest a strong presumptive diagnosis of a simple bone cyst can be clinically and radiographically monitored. However, clinical variations, as in the present clinical case, require confirmation of the diagnosis, which is performed through exploratory surgery. The establishment of the diagnosis affords the safest approach for both the professional and the patient.
DOI: 10.6084/m9.figshare.7512407
title: Treatment of Riga-Fede disease using laser therapy: clinical case report

description: ABSTRACT Neonatal teeth arise in the oral cavity in up to 30 days of life. Early eruption of teeth associated with dental trauma on the ventral surface of the tongue during breastfeeding may lead to a set of signs and symptoms called the Riga-Fede lesion, which manifests as a chronic ulceration on the ventral surface of the tongue. Establishing the treatment plan is a challenging task. The pediatric dentist and pediatrician, should act in promoting health and recovery of the baby with the disease, taking care not to neglect the weight loss in newborns. The aim of this study was to demonstrate the clinical implications of a Riga-Fede lesion and treatment approach using laser therapy. A 43-day-old child was referred to pediatric dentistry, presenting weight loss and a congenital lingual injury caused by a neonatal tooth. The treatment, after radiographic examination was extraction of tooth 71, topical application of Triacinolone acetonide and laser therapy. Laser therapy has been shown to be a possible treatment option for Riga-Fede lesions, reducing the healing time to four days, allowing the return to feeding and improvement in the pain symptoms from the first day of application.
DOI: 10.6084/m9.figshare.7512407.v1
title: Treatment of Riga-Fede disease using laser therapy: clinical case report

description: ABSTRACT Neonatal teeth arise in the oral cavity in up to 30 days of life. Early eruption of teeth associated with dental trauma on the ventral surface of the tongue during breastfeeding may lead to a set of signs and symptoms called the Riga-Fede lesion, which manifests as a chronic ulceration on the ventral surface of the tongue. Establishing the treatment plan is a challenging task. The pediatric dentist and pediatrician, should act in promoting health and recovery of the baby with the disease, taking care not to neglect the weight loss in newborns. The aim of this study was to demonstrate the clinical implications of a Riga-Fede lesion and treatment approach using laser therapy. A 43-day-old child was referred to pediatric dentistry, presenting weight loss and a congenital lingual injury caused by a neonatal tooth. The treatment, after radiographic examination was extraction of tooth 71, topical application of Triacinolone acetonide and laser therapy. Laser therapy has been shown to be a possible treatment option for Riga-Fede lesions, reducing the healing time to four days, allowing the return to feeding and improvement in the pain symptoms from the first day of application.
DOI: 10.6084/m9.figshare.7512419.v1
title: Simple bone cyst in a 7-year-old child

description: ABSTRACT The simple bone cyst,or traumatic bone cyst, solitary or idiopathic bone cavity is an intraosseous pseudocyst discovered through a panoramic radiographic examination. Commonly, the SBC is presented as an asymptomatic lesion, radiolucent, unilocular, without cortical expansion, with margins adorning vital tooth roots of the affected region. The literature has recommended that clinical and radiographic aspects of simple bone cyst are quite convincing as to diagnosis, so follow-up through clinical and radiographic examination has been suggested. This case illustrates an exuberant clinical case of simple bone cyst, which was presented as multilocular and expansive lesion in a 7-year-old patient. Surgical exploration was performed because her parents were anxious about the presumptive diagnosis of other more aggressive lesions. The diagnosis of SBC was confirmed. The case was monitored and, after three years, total bone remodeling of the affected area was observed. In conclusion, asymptomatic radiolucent lesions that suggest a strong presumptive diagnosis of a simple bone cyst can be clinically and radiographically monitored. However, clinical variations, as in the present clinical case, require confirmation of the diagnosis, which is performed through exploratory surgery. The establishment of the diagnosis affords the safest approach for both the professional and the patient.
DOI: 10.6084/m9.figshare.7510217
title: Evaluation of Enterococcus faecalis, Staphylococcus warneri and Staphylococcus aureus species in adults with generalized chronic periodontitis

description: ABSTRACT Objective: To identify and quantify the levels of three bacterial species that have recently been identified as potential “new” periodontal pathogens (Enterococcus faecalis, Staphylococcus aureus and Staphylococcus warneri) in subjects with periodontal health and generalized chronic periodontitis. Methods: Thirty adults with generalized chronic periodontitis and 10 periodontally healthy were included in this study. Nine subgingival biofilm samples were collected per subject and individually analyzed by checkerboard DNA-DNA hybridization technique. Results: The mean levels of E. faecalis and S. warneri were higher in chronic periodontitis than in periodontal health (p&lt;0.05). Furthermore, a higher percentage of subjects with periodontitis were colonized by the three species evaluated in comparison with healthy subjects (p&lt;0.05). This represented a difference of 40 percentage points between the two groups, for E. faecalis (present in 90% of individuals with periodontitis and 50% of the healthy individuals) and S. warneri (100% and 60%, respectively), and 26 percentage points for S. aureus (86% and 60%, respectively). Conclusion: E. faecalis and S. warneri have the potential to be periodontal pathogens. The role of S. aureus was less evident, since this species was more prevalent and at relatively higher levels in health than the other two species. These data might guide future studies on the role of these microorganisms in the etiology of periodontitis and help to establish more effective treatments for these infections.
DOI: 10.6084/m9.figshare.7510217.v1
title: Evaluation of Enterococcus faecalis, Staphylococcus warneri and Staphylococcus aureus species in adults with generalized chronic periodontitis

description: ABSTRACT Objective: To identify and quantify the levels of three bacterial species that have recently been identified as potential “new” periodontal pathogens (Enterococcus faecalis, Staphylococcus aureus and Staphylococcus warneri) in subjects with periodontal health and generalized chronic periodontitis. Methods: Thirty adults with generalized chronic periodontitis and 10 periodontally healthy were included in this study. Nine subgingival biofilm samples were collected per subject and individually analyzed by checkerboard DNA-DNA hybridization technique. Results: The mean levels of E. faecalis and S. warneri were higher in chronic periodontitis than in periodontal health (p&lt;0.05). Furthermore, a higher percentage of subjects with periodontitis were colonized by the three species evaluated in comparison with healthy subjects (p&lt;0.05). This represented a difference of 40 percentage points between the two groups, for E. faecalis (present in 90% of individuals with periodontitis and 50% of the healthy individuals) and S. warneri (100% and 60%, respectively), and 26 percentage points for S. aureus (86% and 60%, respectively). Conclusion: E. faecalis and S. warneri have the potential to be periodontal pathogens. The role of S. aureus was less evident, since this species was more prevalent and at relatively higher levels in health than the other two species. These data might guide future studies on the role of these microorganisms in the etiology of periodontitis and help to establish more effective treatments for these infections.
DOI: 10.6084/m9.figshare.7515008
title: Spatial distribuition of tooth loss in a population of adults

description: ABSTRACT Introduction: Although there has been an improvement in the oral health status of the population, tooth loss still aggravates the oral health of adults and is a matter of great relevance to dentistry. Aim: To determine the spatial distribution of tooth loss in adults and correlate this with the Social Exclusion Index and proximity to public dental services. Material and Method: This ecological study was based on epidemiological data of adults from Piracicaba municipality and from the Piracicaba Research and Planning Institute (IPPLAP). Data on dental evaluations were extracted from the Piracicaba epidemiological survey, which was a cross-sectional study with probabilistic sampling of 248 adults aged 20-64 years, representative of adults living in Piracicaba, Brazil. Oral examinations of the DMFT index were in accordance with the World Health Organization codes and criteria and were performed by a single examiner calibrated for this purpose. Data on social exclusion and the municipal health units that have dental services were extracted from IPPLAP. Georeferencing was performed of census tracts selected by draw, and the city health facilities that have dental services. For Spearman correlation analysis (p &lt;0.05), we used the mean value of teeth lost per district, the Social Exclusion Index (IEX), and proximity to public dental service categorized according to radius: &lt;500m, between 500-1000m, and &gt;1000m the census tract. Result: There was a correlation between tooth loss and higher IEX, and r=−0.51 (p=0.01), but no correlation with proximity to public dental services (p=0.42). Conclusion: Tooth loss in adults was distributed according to social exclusion, however, it was unrelated to proximity to the public dental services.