cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.6084/m9.figshare.7509683
title: Epithelial metabolism evaluation in radicular cysts by the AGNOR technique

description: Introduction: Radicular Cyst (RC) development is associated with the activation and proliferation of epithelial rests of Malassez. This occurs due to inflammatory stimuli resulting from bacteria proliferation in the root canal of a non-vital tooth. When the tooth is removed, the cyst becomes known as Residual Cyst (ReC). The RC common treatment is the endodontic therapy, with the aim of eliminating the inflammation in the periapical region. Nonetheless, this treatment is not always effective and the cyst may continue to grow, what happens in most cases of ReC.Objective: To evaluate the metabolism of the RC and ReC epithelial lining through the technique of AgNOR quantification and of the influence of the presence of inflammation in the growth of these cysts.Material and method: 20 cases of RC and 10 of ReC, were processed by the AgNOR technique. The AgNOR quantitative analysis was performed using the "Counting cells" software. The statistical post-hock Newman-Keuls test was applied to compare the RC and ReC mean number of AgNORs in inflamed and non-inflamed areas.Result: Statistically significant difference (p=0.0094) was observed between inflamed (1.86±0.26) and non-inflamed (1.65±0.20) areas. No statistically significant difference (p=0.37) was observed in the comparison between RC (1.81±0.28) and ReC (1.73±0.16).Conclusion: Inflammation interferes in the epithelial metabolism of RC and ReC, reflectings the action of growth factors in epithelial proliferation and contributing to the growth of the cyst, regardless the presence of the etiologic factor associated with the injury origin.
DOI: 10.6084/m9.figshare.7509683.v1
title: Epithelial metabolism evaluation in radicular cysts by the AGNOR technique

description: Introduction: Radicular Cyst (RC) development is associated with the activation and proliferation of epithelial rests of Malassez. This occurs due to inflammatory stimuli resulting from bacteria proliferation in the root canal of a non-vital tooth. When the tooth is removed, the cyst becomes known as Residual Cyst (ReC). The RC common treatment is the endodontic therapy, with the aim of eliminating the inflammation in the periapical region. Nonetheless, this treatment is not always effective and the cyst may continue to grow, what happens in most cases of ReC.Objective: To evaluate the metabolism of the RC and ReC epithelial lining through the technique of AgNOR quantification and of the influence of the presence of inflammation in the growth of these cysts.Material and method: 20 cases of RC and 10 of ReC, were processed by the AgNOR technique. The AgNOR quantitative analysis was performed using the "Counting cells" software. The statistical post-hock Newman-Keuls test was applied to compare the RC and ReC mean number of AgNORs in inflamed and non-inflamed areas.Result: Statistically significant difference (p=0.0094) was observed between inflamed (1.86±0.26) and non-inflamed (1.65±0.20) areas. No statistically significant difference (p=0.37) was observed in the comparison between RC (1.81±0.28) and ReC (1.73±0.16).Conclusion: Inflammation interferes in the epithelial metabolism of RC and ReC, reflectings the action of growth factors in epithelial proliferation and contributing to the growth of the cyst, regardless the presence of the etiologic factor associated with the injury origin.
DOI: 10.6084/m9.figshare.7510739
title: Simplified versus conventional method for the fabrication of complete dentures: procedures adopted by dentists

description: Introduction:In order to reduce costs and clinical time involved with complete denture treatment, dentists have employed simplified methods based on the reduction or preclusion of certain traditional technical procedures.Purpose:To survey the procedures used by dentists to fabricate complete dentures.Material and method:Data was obtained by an electronic form containing questions about dentists' profile and clinical procedures, in order to quantify traditional and simplified approaches at several moments and to determine them to different professional profiles. Results were evaluated by means of cluster analysis.Result:The majority of respondents were male dentists with clinical practice as their main income source, mainly in private service (n=119). Most participants use to take a pair of impressions from each arch, employ semiadjustable articulators with facebow transfers, shape the occlusal plane with the aid of anatomic references, determine occlusal vertical dimension by metric methods and use mandibular manipulation for centric relation. The dentists performed tooth selection in most cases. Statistical analysis identified two clusters based on demographic characteristics and clinical procedures. General practitioners adopting simplified methods formed the first cluster, whereas prosthodontists used to conventional methods formed the second.Conclusion:General dentists tend to adopt simplified approaches, and prosthodontists tend to work according to traditional academic methods.
DOI: 10.6084/m9.figshare.7510739.v1
title: Simplified versus conventional method for the fabrication of complete dentures: procedures adopted by dentists

description: Introduction:In order to reduce costs and clinical time involved with complete denture treatment, dentists have employed simplified methods based on the reduction or preclusion of certain traditional technical procedures.Purpose:To survey the procedures used by dentists to fabricate complete dentures.Material and method:Data was obtained by an electronic form containing questions about dentists' profile and clinical procedures, in order to quantify traditional and simplified approaches at several moments and to determine them to different professional profiles. Results were evaluated by means of cluster analysis.Result:The majority of respondents were male dentists with clinical practice as their main income source, mainly in private service (n=119). Most participants use to take a pair of impressions from each arch, employ semiadjustable articulators with facebow transfers, shape the occlusal plane with the aid of anatomic references, determine occlusal vertical dimension by metric methods and use mandibular manipulation for centric relation. The dentists performed tooth selection in most cases. Statistical analysis identified two clusters based on demographic characteristics and clinical procedures. General practitioners adopting simplified methods formed the first cluster, whereas prosthodontists used to conventional methods formed the second.Conclusion:General dentists tend to adopt simplified approaches, and prosthodontists tend to work according to traditional academic methods.
DOI: 10.6084/m9.figshare.7507325
title: Cephalometric study of the soft tissue characteristics of patients with Class III malocclusion

description: Introduction: Class III malocclusion is defined as anteroposterior discrepancy, which may occur as result of maxillary deficiency and/or mandibular excess. Objective: Evaluate the characteristics of the soft tissue of individuals with Class III in the city of Mossoró, state of Rio Grande do Norte and to observe if there is association between these characteristics with male and female genders.Material and method: It was selected a retrospective sample of 52 lateral cephalometric radiograph of adults, with concave facial profile, negative ANB and negative AOBO. The radiographs were analyzed in the program Radiocef Studio 2. Then, descriptive analysis was performed for all cephalometric variables, calculating mean, standard deviation, maximum and minimum. In order to detect the differences between genders, the t test for independent data was used.Result: The facial profile presented as mean 176,9°±5,9; the nasolabial angle, 91.9°±13.1; the mentolabial sulcus, 137.9°±13.3; and the nasal projection, 16,2mm±4,5; the upper and lower facial thirds, 60,7mm±14,3 and 70,5mm±19, respectively. For the upper and lower lip thicknesses, were found: 13,4mm±5,1 e 13,9mm±4,8. The upper lip protrusion showed 3.3mm±2,7 and the lower, 4mm±3,1.Conclusion: The main cephalometric features found were: concave facial profile, normal nasolabial angle, greater mentolabial sulcus, normal nasal projection, normal height of the middle third and increased height of the lower third, thick lips, normal upper lip protrusion and protruded lower lip. Among the measures evaluated, there wasn't difference between genders. For better understanding about the subject, further studies are required with larger samples and more sophisticated methodological designs.
DOI: 10.6084/m9.figshare.7518707.v1
title: Prevalence of temporomandibular disorders in edentulous subjects rehabilitated with prosthesis total

description: Introdution: Even with the development of preventive dentistry during the last decades and the advent of dental implants, it is still possible to find patients who need rehabilitation with conventional full denture. Whatever the cause of edentulism, TMD can affect edentulous patients, with and without prostheses. The Temporomandibular Disorders can be defined as a set of painful and/or dysfunctional involving the masticatory muscles and/or temporomandibular joints.Objective: The aim of this study is to evaluate and investigate the prevalence of temporomandibular disorders in edentulous subjects, and correlate them with the clinical findings.Methodology: The research sample consisted of 25 edentulous subjects, who underwent rehabilitation treatment with conventional full denture dual discipline Prosthesis Total. The examination followed the RDC (Research Diagnostic Criteria), used for diagnosis of TMD.Result: Of the 25 patients examined, only 1 (4%) had a diagnosis related to myofascial pain. Regarding disc displacement, time of edentulism (p=0,077) and time of use of the prothesis current (p=0,077) were statistically significant, both with 5 subjects with disc displacement. As for degenerative changes and/or painful TMJ, time of edentulism (p=0,012) and time of use of the prothesis current (p=0,012) showed also significant results.Conclusion: Regarding disc displacement and degenerative changes, only the time of edentulism and time of use of denture current were clinical findings statistically significant.
DOI: 10.6084/m9.figshare.7518707
title: Prevalence of temporomandibular disorders in edentulous subjects rehabilitated with prosthesis total

description: Introdution: Even with the development of preventive dentistry during the last decades and the advent of dental implants, it is still possible to find patients who need rehabilitation with conventional full denture. Whatever the cause of edentulism, TMD can affect edentulous patients, with and without prostheses. The Temporomandibular Disorders can be defined as a set of painful and/or dysfunctional involving the masticatory muscles and/or temporomandibular joints.Objective: The aim of this study is to evaluate and investigate the prevalence of temporomandibular disorders in edentulous subjects, and correlate them with the clinical findings.Methodology: The research sample consisted of 25 edentulous subjects, who underwent rehabilitation treatment with conventional full denture dual discipline Prosthesis Total. The examination followed the RDC (Research Diagnostic Criteria), used for diagnosis of TMD.Result: Of the 25 patients examined, only 1 (4%) had a diagnosis related to myofascial pain. Regarding disc displacement, time of edentulism (p=0,077) and time of use of the prothesis current (p=0,077) were statistically significant, both with 5 subjects with disc displacement. As for degenerative changes and/or painful TMJ, time of edentulism (p=0,012) and time of use of the prothesis current (p=0,012) showed also significant results.Conclusion: Regarding disc displacement and degenerative changes, only the time of edentulism and time of use of denture current were clinical findings statistically significant.
DOI: 10.6084/m9.figshare.7511744.v1
title: Analysis of root canal preparation using to clearing technique

description: Introduction: The endodontic treatments have evolved in order to prepare the root canal system to receive a hermetic filling of the system and preserve the health of periapical and/or restore it when affected by tissue injury. These are achieved through obedience the a suitable chemical-mechanical preparation, then the filling of the same.Objective:Analyze the chemo-mechanical preparation of root canals performed in vitro by students of Dentistry of the Federal University of Espírito Santo, using the clearing technique.Material and method: 88 dental specimens (lower canines) were used, and provided to students who performed in vitro preparation chemo-mechanical. These specimens were radiographed and subsequently submitted to leaf clearing technique. The quality of the preparation chemical-mechanical techniques was examined concern the shaping of the root canal and compared the best result of the same, visualized the anatomical features of the root canal system, compared the radiographic exam of the teeth and clearing technique.Result: the modeling of root canals analyzed by the clearing technique, 67% were modeled with a statistical significance of 0.002 (p&lt;0.05) and as the concordance of the results of variable modeling of the root canals between the radiographic examination and clearing technique yielded a Kappa value=0.511 showing a moderate agreement between the two visualization techniques.Conclusion:The radiography proved to be limited in view of the channel modeling and also in view of the anatomical features of the root canal system, and also that the clearing technique is a visualization technique accessible and essential to the evolution of education in Endodontics.
DOI: 10.6084/m9.figshare.7511729
title: Histological evaluation of biphasic hydroxyapatite associated to beta tricalcium phosphate (β-TCP) used in maxillary sinus lift

description: Introduction:Sinus lift to permit insertion of implants when alveolar residual bone height is insufficient may be considered an effective procedure. The use of autogenous bone from intraoral or extraoral sources is considered as the gold standard for this procedure. New options of bone substitutes have been emphasizing, such as Straumann(r) BoneCeramic (BC), consisting of 60% of hydroxyapatite and 40% of calcium phosphate, 100% synthetic material that was used in this work.Objective:This investigation was designed to evaluate and compare the behavior of a fully synthetic biphasic calcium phosphate (BCP) 60% hydroxyapatite and 40% of β-tricalcium phosphate (Straumann(r) Bone-Ceramic) to the autogenous bone graft (ABG) in maxillary sinus floor elevation procedure prior to installation dental implants.Material and method:Ten healthy patients who were partially edentulous in the posterior maxilla were included in this study and submitted to a unilateral maxillary sinus floor elevation procedure, with grafting using either ABG (control group; 5 patients) or BCP (test group; 5 patients). After 6 months of healing implant sites were created and biopsies taken for histological analyses.Result:A primary stability was achieved with all dental implants after the biopsies. Histological investigation showed a viable new bone tissue formed in 4 of 5 BCP specimens. Also, showed close contact between new bone and BCP particles, in 4 of 5 specimens. In 1 of 5 BCP specimens no viable bone tissue was found. Both ABG and BCP produced similar amounts of newly formed bone, with similar histologic appearance.Conclusion:The results indicate that BCP is a suitable material for sinus augmentation for the placement of dental implants.
DOI: 10.6084/m9.figshare.7511744
title: Analysis of root canal preparation using to clearing technique

description: Introduction: The endodontic treatments have evolved in order to prepare the root canal system to receive a hermetic filling of the system and preserve the health of periapical and/or restore it when affected by tissue injury. These are achieved through obedience the a suitable chemical-mechanical preparation, then the filling of the same.Objective:Analyze the chemo-mechanical preparation of root canals performed in vitro by students of Dentistry of the Federal University of Espírito Santo, using the clearing technique.Material and method: 88 dental specimens (lower canines) were used, and provided to students who performed in vitro preparation chemo-mechanical. These specimens were radiographed and subsequently submitted to leaf clearing technique. The quality of the preparation chemical-mechanical techniques was examined concern the shaping of the root canal and compared the best result of the same, visualized the anatomical features of the root canal system, compared the radiographic exam of the teeth and clearing technique.Result: the modeling of root canals analyzed by the clearing technique, 67% were modeled with a statistical significance of 0.002 (p&lt;0.05) and as the concordance of the results of variable modeling of the root canals between the radiographic examination and clearing technique yielded a Kappa value=0.511 showing a moderate agreement between the two visualization techniques.Conclusion:The radiography proved to be limited in view of the channel modeling and also in view of the anatomical features of the root canal system, and also that the clearing technique is a visualization technique accessible and essential to the evolution of education in Endodontics.
DOI: 10.6084/m9.figshare.7511729.v1
title: Histological evaluation of biphasic hydroxyapatite associated to beta tricalcium phosphate (β-TCP) used in maxillary sinus lift

description: Introduction:Sinus lift to permit insertion of implants when alveolar residual bone height is insufficient may be considered an effective procedure. The use of autogenous bone from intraoral or extraoral sources is considered as the gold standard for this procedure. New options of bone substitutes have been emphasizing, such as Straumann(r) BoneCeramic (BC), consisting of 60% of hydroxyapatite and 40% of calcium phosphate, 100% synthetic material that was used in this work.Objective:This investigation was designed to evaluate and compare the behavior of a fully synthetic biphasic calcium phosphate (BCP) 60% hydroxyapatite and 40% of β-tricalcium phosphate (Straumann(r) Bone-Ceramic) to the autogenous bone graft (ABG) in maxillary sinus floor elevation procedure prior to installation dental implants.Material and method:Ten healthy patients who were partially edentulous in the posterior maxilla were included in this study and submitted to a unilateral maxillary sinus floor elevation procedure, with grafting using either ABG (control group; 5 patients) or BCP (test group; 5 patients). After 6 months of healing implant sites were created and biopsies taken for histological analyses.Result:A primary stability was achieved with all dental implants after the biopsies. Histological investigation showed a viable new bone tissue formed in 4 of 5 BCP specimens. Also, showed close contact between new bone and BCP particles, in 4 of 5 specimens. In 1 of 5 BCP specimens no viable bone tissue was found. Both ABG and BCP produced similar amounts of newly formed bone, with similar histologic appearance.Conclusion:The results indicate that BCP is a suitable material for sinus augmentation for the placement of dental implants.
DOI: 10.6084/m9.figshare.7515386
title: Evaluation of scientific production in the field of Dentistry in Public Health from 1999 to 2009

description: Introduction: Studies that analyze scientific production are essential to guide researchers.Aim: The purpose of this study was to analyze the profile of scientific production in the field of Dentistry in Public Health, by means of the abstracts published in the Annals of Sociedade Brasileira de Pesquisa Odontológica in the period from 1999 to 2009.Material and method:First, the reading of all the 22388 abstracts published in the annals of the Sociedade Brasileira de Pesquisa Odontológica from 1999 to 2009 was undertaken. The sample was 3061 abstract belonging to Public Health area.Result:There was growing participation of studies on Dentistry in Public Health with 113 studies having been inscribed in 1999 and 441 in 2009. There was a predominance of scientific studies in comparison with systematic reviews, meta-analyses, or case reports. In the classification of general nature of the research, 71.28% concerned studies with human beings. The greatest weight in the total number of researches with humans was in 2002, contributing with 79.79% of the total. With regard to the area of thematic domain, it was verified that studies involving Epidemiology were more frequent in all the years. When analyzing the institutional origin of studies, it was verified that in all the studied years, the public universities were responsible for the majority of scientific publications, 75.6% (n=2315).Conclusion: The studies on Dentistry in Public Health have grown significantly in the studied period of ten years. There was predominance of Epidemiological studies, and those of the in vivo and scientific research type.
DOI: 10.6084/m9.figshare.7515386.v1
title: Evaluation of scientific production in the field of Dentistry in Public Health from 1999 to 2009

description: Introduction: Studies that analyze scientific production are essential to guide researchers.Aim: The purpose of this study was to analyze the profile of scientific production in the field of Dentistry in Public Health, by means of the abstracts published in the Annals of Sociedade Brasileira de Pesquisa Odontológica in the period from 1999 to 2009.Material and method:First, the reading of all the 22388 abstracts published in the annals of the Sociedade Brasileira de Pesquisa Odontológica from 1999 to 2009 was undertaken. The sample was 3061 abstract belonging to Public Health area.Result:There was growing participation of studies on Dentistry in Public Health with 113 studies having been inscribed in 1999 and 441 in 2009. There was a predominance of scientific studies in comparison with systematic reviews, meta-analyses, or case reports. In the classification of general nature of the research, 71.28% concerned studies with human beings. The greatest weight in the total number of researches with humans was in 2002, contributing with 79.79% of the total. With regard to the area of thematic domain, it was verified that studies involving Epidemiology were more frequent in all the years. When analyzing the institutional origin of studies, it was verified that in all the studied years, the public universities were responsible for the majority of scientific publications, 75.6% (n=2315).Conclusion: The studies on Dentistry in Public Health have grown significantly in the studied period of ten years. There was predominance of Epidemiological studies, and those of the in vivo and scientific research type.