Brazilian dental journal最新文献_第9页

Higher frequency of specific periodontopathogens in hypertensive patients. A pilot study. 高血压患者特定牙周病的发病率较高。一项初步研究

Brazilian dental journal Pub Date : 2022-09-01 DOI: 10.1590/0103-6440202204914

Taciane Menezes da Silveira, Caroline Fernandes E Silva, Rodrigo de Almeida Vaucher, Patrícia Daniela Melchiors Angst, Maísa Casarin, Natália Marcumini Pola

{"title":"Higher frequency of specific periodontopathogens in hypertensive patients. A pilot study.","authors":"Taciane Menezes da Silveira, Caroline Fernandes E Silva, Rodrigo de Almeida Vaucher, Patrícia Daniela Melchiors Angst, Maísa Casarin, Natália Marcumini Pola","doi":"10.1590/0103-6440202204914","DOIUrl":"10.1590/0103-6440202204914","url":null,"abstract":"Periodontitis and arterial hypertension are two of the pathologies with the highest global prevalence; evidence reported so far has been favorable to an association between them. This cross-sectional study aimed to evaluate and compare the microbiological counts of hypertensive and normotensive patients with periodontitis. Sociodemographic, behavioral, systemic health data and periodontal clinical parameters were assessed. Counts of A. actinomycetemcomitans, P. intermedia, P. gingivalis and F. nucleatum were performed by real-time polymerase chain reaction using subgingival biofilm samples. Thirty-eight patients were included in this preliminary analysis, divided into two groups: Normotensive Group (NG) (n = 14) and Hypertensive Group (HG) (n = 24). Patients diagnosed with periodontitis composed both groups. Data analysis was performed with significance level of 5%. There was no significant difference between groups for clinical periodontitis diagnosis. In addition, hypertensive individuals had higher P. intermedia, P. gingivalis, and F. nucleatum counts when compared to normotensive individuals. The parameters probing pocket depth, bleeding on probing, and A. actinomycetemcomitans count did not presented statistical differences between groups. With these preliminary results, it can be concluded that the presence of arterial hypertension may be associated with a greater quantity of periodontopathogenic bacterial of some species in individuals with periodontitis.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"33 1","pages":"64-73"},"PeriodicalIF":0.0,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9645173/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48467733","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of the dosimetry and centralization of scout-view function in CBCT. CBCT中剂量学和视哨功能集中化的评价。

Brazilian dental journal Pub Date : 2022-07-01 DOI: 10.1590/0103-6440202204926

Danúsia da Silva Vilela, Luiz Roberto Coutinho Manhães Júnior, Monikelly do Carmo Chagas Nascimento, Anne Caroline Costa Oenning, José Luiz Cintra Junqueira, Elizabeth Ferreira Martinez

{"title":"Evaluation of the dosimetry and centralization of scout-view function in CBCT.","authors":"Danúsia da Silva Vilela, Luiz Roberto Coutinho Manhães Júnior, Monikelly do Carmo Chagas Nascimento, Anne Caroline Costa Oenning, José Luiz Cintra Junqueira, Elizabeth Ferreira Martinez","doi":"10.1590/0103-6440202204926","DOIUrl":"https://doi.org/10.1590/0103-6440202204926","url":null,"abstract":"This study evaluated the centralization of the region of interest (ROI) in acquisition of the CBCT images, when the freely positionable scout-view (SV) function is applied. Additionally, the dosimetry of the acquired images was assessed in the SV function alone as well as in complete tomographic image in two different fields of view (FOV) (50x50 and 78x150mm). A three-location device was created to accommodate the dosimeters and the specimens, in the right, middle and left location during image acquisition. For dose assessment, thermoluminescent dosimeters were irradiated within the FOV and analyzed in a portable reader. For ROI evaluation, three specimens of gutta-percha stick were placed on the same device and the CT scans were acquired (CBCT OP 300 Maxio device, 90kV, 13mA, 85 µm voxel size, FOV of 50X50mm), with and without the SV, in three positions (3-9, 1-7 and 5-11 o'clock), simulating different regions of the mouth. Two image evaluations were performed, an objective and subjective. There was a slight percentage increase (1.36% to 1.40%) of the radiation dose with the use of SV. The distances were significantly greater in the images acquired without SV (p < 0.05). Every image obtained with SV was classified as being at the FOV's center. In conclusion, the results demonstrated that SVs function is effective to centralize the ROI in the FOV, increasing the scan precision and avoiding repetitions due to positioning errors.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"33 4","pages":"31-39"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9645184/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40333848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genetic, Cellular and Molecular Aspects involved in Apical Periodontitis. 根尖牙周炎的遗传、细胞和分子研究。

Brazilian dental journal Pub Date : 2022-07-01 DOI: 10.1590/0103-6440202205113

Igor Bassi Ferreira Petean, Alice Corrêa Silva-Sousa, Tamara Justiniano Cronenbold, Jardel Francisco Mazzi-Chaves, Lea Assed Bezerra da Silva, Raquel Assed Bezerra Segato, Guilherme Assed Piedade de Castro, Erika Calvano Kuchler, Francisco Wanderley Garcia Paula-Silva, Manoel Damião Sousa-Neto

{"title":"Genetic, Cellular and Molecular Aspects involved in Apical Periodontitis.","authors":"Igor Bassi Ferreira Petean, Alice Corrêa Silva-Sousa, Tamara Justiniano Cronenbold, Jardel Francisco Mazzi-Chaves, Lea Assed Bezerra da Silva, Raquel Assed Bezerra Segato, Guilherme Assed Piedade de Castro, Erika Calvano Kuchler, Francisco Wanderley Garcia Paula-Silva, Manoel Damião Sousa-Neto","doi":"10.1590/0103-6440202205113","DOIUrl":"https://doi.org/10.1590/0103-6440202205113","url":null,"abstract":"The development, establishment and repair of apical periodontitis (AP) is dependent of several factors, which include host susceptibility, microbial infection, immune response, quality of root canal treatment and organism's ability to repair. The understanding of genetic contributions to the risk of developing AP and presenting persistent AP has been extensively explored in modern Endodontics. Thus, this article aims to provide a review of the literature regarding the biochemical mediators involved in immune response signaling, osteoclastogenesis and bone neoformation, as the genetic components involved in the development and repair of AP. A narrative review of the literature was performed through a PUBMED/MEDLINE search and a hand search of the major AP textbooks. The knowledge regarding the cells, receptors and molecules involved in the host's immune-inflammatory response during the progression of AP added to the knowledge of bone biology allows the identification of factors inherent to the host that can interfere both in the progression and in the repair of these lesions. The main outcomes of studies evaluated in the review that investigated the correlation between genetic polymorphisms and AP in the last five years, demonstrate that genetic factors of the individual are involved in the success of root canal treatment. The discussion of this review gives subsides that may help to glimpse the development of new therapies based on the identification of therapeutic targets and the development of materials and techniques aimed at acting at the molecular level for clinical, radiographic and histological success of root canal treatment.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"33 4","pages":"1-11"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9645190/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40334372","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

MicroCT evaluation for CAD/CAM occlusal veneer fit using two materials and three cement space settings. 使用两种材料和三种水泥空间设置对CAD/CAM咬合贴面贴合的MicroCT评估。

Brazilian dental journal Pub Date : 2022-07-01 DOI: 10.1590/0103-6440202204764

Adel Abdelsattar Elbadawy, Elsayed Ali Omar, Mohammed Hosny AbdElaziz

{"title":"MicroCT evaluation for CAD/CAM occlusal veneer fit using two materials and three cement space settings.","authors":"Adel Abdelsattar Elbadawy, Elsayed Ali Omar, Mohammed Hosny AbdElaziz","doi":"10.1590/0103-6440202204764","DOIUrl":"https://doi.org/10.1590/0103-6440202204764","url":null,"abstract":"This study was aimed to evaluate the fit of occlusal veneer restoration for two CAD/CAM materials with different cement space settings, using microCT scans. Sixty resin dies were made and divided into two groups (n=30) according to the materials, (I): Hybrid all-ceramic, and (II): zirconia-reinforced lithium silicate glass-ceramic. Each group was subdivided into three subgroups (n=10) according to the cement space parameters (30, 40, and 50 µm). Occlusal veneers for the six subgroups were milled. A circle with 20 different sections was placed at the center of every scanned specimen to measure four different locations (Occlusal, Axial, Marginal, and Absolute marginal discrepancy). Data were analyzed using two-way ANOVA at a 0.05 level of significance. There was no statistically significant effect of material type on the mean values of internal and marginal gaps for the three cement space parameters (P>0.05). There were no statistically significant differences in the occlusal and axial gap between the cement space parameters, furthermore, there were statistically significant differences in marginal gap distances and absolute marginal discrepancies (P>0.05). Hybrid all-ceramic showed smaller marginal and internal discrepancies than zirconia-reinforced lithium silicate glass-ceramic without statistically significant differences, and, for both materials, 50 µm cement space significantly improved the marginal fit and absolute marginal discrepancy.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"33 4","pages":"71-78"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9645188/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40333852","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Association between hypomineralization of deciduous and molar incisor hypomineralization and dental caries. 乳牙和臼齿低矿化与龋病的关系。

Brazilian dental journal Pub Date : 2022-07-01 DOI: 10.1590/0103-6440202204807

Yasmy Quintero, Manuel Restrepo, Diego Fernando Rojas-Gualdrón, Aline Leite de Farias, Lourdes Santos-Pinto

{"title":"Association between hypomineralization of deciduous and molar incisor hypomineralization and dental caries.","authors":"Yasmy Quintero, Manuel Restrepo, Diego Fernando Rojas-Gualdrón, Aline Leite de Farias, Lourdes Santos-Pinto","doi":"10.1590/0103-6440202204807","DOIUrl":"https://doi.org/10.1590/0103-6440202204807","url":null,"abstract":"This study aimed to evaluate the association between the severity of hypomineralized second primary molars (HSPM), molar-incisor hypomineralization (MIH) and dental caries in children. 450 children between the ages of 6 and 7 years were included in this cross-sectional study. A calibrated examiner classified the enamel hypomineralizations and dental caries lesions using the MIH and HSPM and the Nyvad criteria, respectively. The primary outcome was the severity of MIH according to the severity of HSPM. Statistical analysis was performed using the generalized linear model and ordinal logistic regression. The prevalence of concomitant MIH and HSPM was 26% sex and age adjusted. Mild enamel defects were more frequent than severe enamel defects. An association was found between the severity of MIH and HSPM, both for mild defects (OR=87.54; 95%CI: 55.87, 137.17) and severe defects (OR=82.15; 95%CI: 45.72, 147.61). The severity of hypomineralization in permanent molars was associated with the activity of dental caries lesions (OR=29.85; 95%CI: 12.95, 68.83). To conclude, there is a strong association between the severity of HSPM and MIH, which is more significant in the presence of active dental caries lesions.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"33 4","pages":"113-119"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9645183/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40334374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

A computational modeling method for root canal endoscopy using a specific CBCT filter: A new era in the metaverse of endodontics begins. 一种使用特定CBCT过滤器的根管内窥镜计算建模方法:牙髓学的新时代开始了。

Brazilian dental journal Pub Date : 2022-07-01 DOI: 10.1590/0103-6440202205078

Mike R Bueno, Carlos Estrela

{"title":"A computational modeling method for root canal endoscopy using a specific CBCT filter: A new era in the metaverse of endodontics begins.","authors":"Mike R Bueno, Carlos Estrela","doi":"10.1590/0103-6440202205078","DOIUrl":"https://doi.org/10.1590/0103-6440202205078","url":null,"abstract":"A contemporary technological revolution has started a new era in the metaverse of Endodontics, a world of virtual operational possibilities that use an exact replica of the natural structures of the maxillofacial complex. This study describes a modeling method for root canal endoscopy using modern cone-beam CT (CBCT) software in a series of clinical cases. The method consists in acquiring thin CBCT slices (0.10mm) in the coronal, sagittal, and axial planes. A specific 3D volume filter, the pulp cavity filter of the e-Vol DX CBCT software, was used to navigate anatomical root canal microstructures, and to scan them using root canal endoscopy. The pulp cavity filter should be set to synchronize CBCT scans from 2D mode - multiplanar reformations (MPR) - to 3D mode - volumetric reconstruction. This filter, when adopting the option of volumetric reconstruction, the developed algorithm leaves the dentin density in transparent mode so that the pulp cavity may be visualized. The algorithm applied performs the suppression (visual) of areas with dentin density. This ensures 3D visualization of the slices and the microanatomy of the root canal, as well as a dynamic navigation throughout the pulp cavity. This computational modeling method adds new resources to Endodontics, which may impact the predictability of root canal treatments positively. The virtual visualization of the internal anatomy of an exact replica of the canal ensures better communications, reliability, and clinical operationalization. Root canal endoscopy using this novel CBCT filter may be used for clinical applications together with innovative digital and virtual-reality resources that will be naturally incorporated into the principles of Endodontics.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"33 4","pages":"21-30"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9645178/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40334376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Impact of smoking on protein levels of beta-defensins in periodontal disease. 吸烟对牙周病患者β -防御素蛋白水平的影响。

Brazilian dental journal Pub Date : 2022-07-01 DOI: 10.1590/0103-6440202204685

Kahena Rodrigues Soldati, Lorena Silva Gutierrez, Giovana Anovazzi, Raquel Mantuaneli Scarel-Caminaga, Daniela Leal Zandim-Barcelos

{"title":"Impact of smoking on protein levels of beta-defensins in periodontal disease.","authors":"Kahena Rodrigues Soldati, Lorena Silva Gutierrez, Giovana Anovazzi, Raquel Mantuaneli Scarel-Caminaga, Daniela Leal Zandim-Barcelos","doi":"10.1590/0103-6440202204685","DOIUrl":"https://doi.org/10.1590/0103-6440202204685","url":null,"abstract":"Antimicrobial peptides (AMPs) are important components of the host response against invading pathogens. In addition to their direct antimicrobial activity, they can also participate in the immune system modulation. However, the role of AMPs in the etiopathogenesis of periodontal disease and the risk factors that may influence their expression in the oral cavity are not fully understood. The aim of this study was to determine the impact of smoking on beta-defensin (hBD) 1 and 2 levels analyzing samples from periodontitis patients. Fifty patients with periodontitis, 25 smokers and 25 non-smokers, and 20 periodontally healthy patients were recruited. After periodontal clinical evaluation, gingival crevicular fluid (GCF) samples were collected from healthy sites of patients without periodontal disease and from healthy and diseased sites of patients with periodontitis. Peptides quantification was performed by sandwich ELISA technique. Smokers showed reduced GCF hBD 1 levels and increased hBD 2 levels compared to non-smokers in diseased sites (p <0.05). Higher levels of hBD 1 were observed in healthy sites of patients without periodontal disease than in healthy sites of patients with periodontitis (p<0.0001). Diseased sites of non-smokers presented higher levels of hBD 2 than healthy sites (p <0.05). These results reveal that protein levels of hBDs 1 and 2 can be impaired by cigarette smoking in the presence of periodontal disease.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"33 4","pages":"79-86"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9645181/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40333853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Temporomandibular disorder in construction workers associated with ANKK1 and DRD2 genes. 与ANKK1和DRD2基因相关的建筑工人颞下颌疾病

Brazilian dental journal Pub Date : 2022-07-01 DOI: 10.1590/0103-6440202204963

Samantha Schaffer Pugsley Baratto, Michelle Nascimento Meger, Vânia Camargo, Gisele Maria Correr Nolasco, Natanael Henrique Ribeiro Mattos, Liliane Roskamp, José Stechman-Neto, Isabela Ribeiro Madalena, Erika Calvano Küchler, Flares Baratto-Filho

{"title":"Temporomandibular disorder in construction workers associated with ANKK1 and DRD2 genes.","authors":"Samantha Schaffer Pugsley Baratto, Michelle Nascimento Meger, Vânia Camargo, Gisele Maria Correr Nolasco, Natanael Henrique Ribeiro Mattos, Liliane Roskamp, José Stechman-Neto, Isabela Ribeiro Madalena, Erika Calvano Küchler, Flares Baratto-Filho","doi":"10.1590/0103-6440202204963","DOIUrl":"https://doi.org/10.1590/0103-6440202204963","url":null,"abstract":"The study aimed to explore the influence of genetic polymorphisms in ANKK1 and DRD2 on the signs and symptoms of temporomandibular disorder (TMD) in construction workers. This cross-sectional study included only male subjects. All construction workers were healthy and over 18 years age. Illiterate workers and functionally illiterate workers were excluded. The diagnosis of TMD was established according to the Research Diagnostic Criteria for TMD (RDC/TMD). Genomic DNA was used to evaluate the genetic polymorphisms ANKK1 (rs1800497) and DRD2 (rs6275; rs6276) using Real-Time PCR. Chi-square or Fisher exact tests were used to evaluate genotypes and allele distribution among the studied phenotypes. The established alpha of this study was 5%. The sample included a total of 115 patients. The age of the patients ranged from 19 to 70 years (mean age 38.2; standard deviation 11.7). Chronic pain (87.7%), disc displacement (38.2%), and joint inflammation (26.9%) were the most frequently observed signs and symptoms. The genetic polymorphism rs6276 in DRD2 was associated with chronic pain (p=0.033). In conclusion, our study suggests that genetic polymorphisms in DRD2 and ANKK1 may influence TMD signs and symptoms in a group of male construction workers.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"33 4","pages":"12-20"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9645185/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40334375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of different thresholds on the accuracy of linear and volumetric analysis of native- and grafted-bone. 不同阈值对原生骨和移植物骨线性和体积分析准确性的影响。

Brazilian dental journal Pub Date : 2022-07-01 DOI: 10.1590/0103-6440202204823

Julia Raulino Lima, Sttephany Silva Bernardino, Lucas De Sousa Goulart Pereira, Túlio Bonna Pignaton, Rubens Spin-Neto, Elcio Marcantonio-Junior, Guilherme José Pimentel Lopes De Oliveira

{"title":"Effect of different thresholds on the accuracy of linear and volumetric analysis of native- and grafted-bone.","authors":"Julia Raulino Lima, Sttephany Silva Bernardino, Lucas De Sousa Goulart Pereira, Túlio Bonna Pignaton, Rubens Spin-Neto, Elcio Marcantonio-Junior, Guilherme José Pimentel Lopes De Oliveira","doi":"10.1590/0103-6440202204823","DOIUrl":"https://doi.org/10.1590/0103-6440202204823","url":null,"abstract":"The study aimed to evaluate the accuracy of Micro-CT in linear and volumetric measurements in native (NB) and grafted bone (GB) areas. A total of 111 biopsies of maxillary sinuses grafted with deproteinized bovine bone (DBB) in humans were evaluated. The linear measurements were performed to measure the length of the NB and GB. Furthermore, the amount of mineralized tissues at the NB and GB was performed. In the histomorphometry analysis the percentage of mineralized tissues at the NB and GB was obtained in two histological sections while the mineralized tissues were measure in the micro-CT varying the thresholds of the grayscale varying from 90-250 to 90-150 with 10 levels of variation between each one was applied. Then these data were correlated in order to check the higher r level between the histomorphometry and micro-CT thresholds intervals. The linear length of the NB was 2.44±0.91mm and 2.48±1.50mm, respectively, for micro-CT and histomorphometry (r =0.57), while the linear length of the GB was 3.63±1.66mm and 3.13±1.45mm, respectively, for micro-CT and histomorphometry (r =0.74) Histomorphometry showed 45.91±11.69% of bone in NB, and 49.57±5.59% of bone and biomaterial in the GB. The total volume of mineralized tissues that were closest to the histometric analysis were 43.75±15.39% in the NB (Threshold:90-240; r = 0.50) and 51.68±8.42% in the GB (Threshold:90-180; r =-0.028). The micro-CT analysis showed good accuracy in the linear analysis in both portions of the biopsies but for volumetric analysis just in NB.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"33 4","pages":"40-46"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9645177/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40334377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Number of dentists in the neighborhood and incidence of dental caries in the children permanent dentition. 邻区牙医数目与儿童恒牙龋病发生率。

Brazilian dental journal Pub Date : 2022-07-01 DOI: 10.1590/0103-6440202204321

Marina Dutra Cósta, Bruna Brondani, Jessica Klöckner Knorst, Fausto Medeiros Mendes, Thiago Machado Ardenghi

{"title":"Number of dentists in the neighborhood and incidence of dental caries in the children permanent dentition.","authors":"Marina Dutra Cósta, Bruna Brondani, Jessica Klöckner Knorst, Fausto Medeiros Mendes, Thiago Machado Ardenghi","doi":"10.1590/0103-6440202204321","DOIUrl":"https://doi.org/10.1590/0103-6440202204321","url":null,"abstract":"This study aimed to evaluate the influence of the number of dentists in the neighborhood on the incidence of dental caries in the children permanent dentition. This cohort began in 2010 (T1) with a random sample of 639 children (1 to 5 years-old) followed for 7 years, in southern Brazil. The follow-up reassessment (T2) took place in 2017. Untreated dental caries was evaluated at T2 through the Decayed, Missing, and Filled surfaces index (DMF-S). The number of dentists in the neighborhood was obtained from the city's official database and used as a contextual variable. Socioeconomic, demographic, and oral health variables at the individual level were evaluated at T1. A multilevel Poisson regression was performed to evaluate the influence of the predictor variables in the incidence of untreated dental caries. From 639 children at T1, 449 were reassessed at T2 (a 70.3% retention rate). The mean of decayed surfaces at T2 was 0.92 (SE 0.01). The greater the number of dentists in the neighborhoods where the children lived, the lower the incidence of dental caries. Children with low socioeconomic status, who have not routinely visited the dentist in the last 6 months, who presented a experience of dental caries, and whose parents perceived their oral health as fair/poor showed a higher incidence of surfaces with untreated dental caries. As conclusion, children who live in neighborhoods with fewer dentists have a higher incidence of untreated dental caries in permanent dentition.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"33 4","pages":"103-112"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9645186/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40334373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0