Brazilian dental journal最新文献_第5页

Repopulation of a 3D simulated periapical lesion cavity with dental pulp stem cell spheroids with triggered osteoblastic differentiation. 引发成骨细胞分化的牙髓干细胞球体三维模拟根尖周围病变腔的重建。

Brazilian dental journal Pub Date : 2024-12-16 eCollection Date: 2024-01-01 DOI: 10.1590/0103-644020235847

Vítor Luís Ribeiro, Janaína A Dernowsek, Roger R Fernandes, Dimitrius L Pitol, João Paulo Mardegan Issa, Jardel F Mazzi-Chaves, Karina Fittipaldi Bombonato-Prado, Manoel Damião Sousa-Neto, Geraldo Aleixo Passos

{"title":"Repopulation of a 3D simulated periapical lesion cavity with dental pulp stem cell spheroids with triggered osteoblastic differentiation.","authors":"Vítor Luís Ribeiro, Janaína A Dernowsek, Roger R Fernandes, Dimitrius L Pitol, João Paulo Mardegan Issa, Jardel F Mazzi-Chaves, Karina Fittipaldi Bombonato-Prado, Manoel Damião Sousa-Neto, Geraldo Aleixo Passos","doi":"10.1590/0103-644020235847","DOIUrl":"10.1590/0103-644020235847","url":null,"abstract":"We established a proof-of-concept model system for the biological healing of periapical lesions using stem cell spheroids. Mesenchymal stem cells from human exfoliated deciduous teeth (SHED) were cultured in a 2D monolayer and then as 3D multicellular spheroids. An image of a periapical lesion of an upper lateral incisor tooth was obtained by computed tomography and was used as a model for photopolymer resin 3D printing to generate a negative frame of the lesion. The negative model served to prepare a positive model of the periapical lesion cavity in an agarose gel. SHED that were cultured in monolayers or as spheroids were seeded in the positive lesion mold before or after osteoblastic differentiation. The results showed that compared to cells cultured in monolayers, spheroids exhibited uniform cellularity and a greater viability within the lesion cavity, which was accompanied by a temporal reduction in the expression of CD13, CD29, CD44, CD73, and CD90 mRNAs that are typically expressed by stem cells. Concomitantly, the expression of markers that characterize osteoblastic differentiation (RUNX2, ALP, and BGLAP) increased. These results provide a new perspective for regenerative endodontics with the use of SHED-derived spheroids to repair periapical lesions.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"35 ","pages":"e235847"},"PeriodicalIF":0.0,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11654009/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142857433","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

Rho Kinases and Reactive Oxygen Species in Autophagy Regulation by Pressure in Periodontal Ligament Cells. Rho激酶和活性氧在牙周膜细胞压力自噬调节中的作用。

Brazilian dental journal Pub Date : 2024-12-06 eCollection Date: 2024-01-01 DOI: 10.1590/0103-6440202405944

Miriam Hardt, Alexandra Mayr, Eric Kutschera, Jana Marciniak, Erika Calvano Küchler, Christian Kirschneck, James Deschner, Andreas Jäger, Svenja Beisel-Memmert

{"title":"Rho Kinases and Reactive Oxygen Species in Autophagy Regulation by Pressure in Periodontal Ligament Cells.","authors":"Miriam Hardt, Alexandra Mayr, Eric Kutschera, Jana Marciniak, Erika Calvano Küchler, Christian Kirschneck, James Deschner, Andreas Jäger, Svenja Beisel-Memmert","doi":"10.1590/0103-6440202405944","DOIUrl":"10.1590/0103-6440202405944","url":null,"abstract":"Autophagy is a self-digestion mechanism of cells, which is related to cell stress. It enables cell survival by maintaining cellular homeostasis or initiates cell death. This study aimed to investigate the intracellular signaling of pressure-induced autophagy regulation in human periodontal ligament (PDL) cells and to analyze the involvement of Rho kinases (ROCK) and reactive oxygen species (ROS) in particular. Human PDL cells were treated with the ROCK inhibitor Y-27632 and the ROS scavenger N-acetylcysteine (NAC) in combination with pressure magnitudes of 2, 6, and 8 g/cm2 over 16 hours. Cells treated with rapamycin served as a positive control and untreated cells as a control group. The Cyto-ID® Autophagy Detection Kit was used for flow cytometric analysis. Statistical analysis was performed using ANOVA and post-hoc tests. The results show that the pressure-induced autophagy was affected differently by the two inhibitors (p<0.05). The application of Y-27632 led to a significant reduction in autophagy in all pressure groups. The application of NAC led to reduced autophagy at pressures of 2 g/cm2 and 6 g/cm2. At 8 g/cm2, this effect was no longer present. In the control group, autophagy was significantly reduced by Y-27632 and significantly increased by NAC. Our data suggest that both Rho-kinase and reactive oxygen species could influence pressure-induced autophagy regulation in PDL cells.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"35 ","pages":"e245944"},"PeriodicalIF":0.0,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11653791/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143712698","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

Analysis of Frontal Sinus Dimensions According to the Skeletal Malocclusion in German Teenagers. 德国青少年骨错颌额窦尺寸分析。

Brazilian dental journal Pub Date : 2024-12-06 eCollection Date: 2024-01-01 DOI: 10.1590/0103-644020245964

Maria Beatriz Carvalho Ribeiro de Oliveira, Guido Artemio Marañón-Vásquez, Isabela Ribeiro Madalena, Eva Paddenberg-Schubert, Svenja Beisel-Memmert, César Penazzo Lepri, Ângela Graciela Deliga Schroder, Peter Proof, Christian Kirschneck, Erika Calvano Küchler, Maria Angélica Hueb de Meneze-Oliveira

{"title":"Analysis of Frontal Sinus Dimensions According to the Skeletal Malocclusion in German Teenagers.","authors":"Maria Beatriz Carvalho Ribeiro de Oliveira, Guido Artemio Marañón-Vásquez, Isabela Ribeiro Madalena, Eva Paddenberg-Schubert, Svenja Beisel-Memmert, César Penazzo Lepri, Ângela Graciela Deliga Schroder, Peter Proof, Christian Kirschneck, Erika Calvano Küchler, Maria Angélica Hueb de Meneze-Oliveira","doi":"10.1590/0103-644020245964","DOIUrl":"10.1590/0103-644020245964","url":null,"abstract":"The present study explored the association between the craniofacial sagittal skeletal patterns and frontal sinus dimensions in Germans. This cross-sectional study included orthodontic patients with age ranging from 11 to 18 (80 males, 82 females). Lateral cephalograms were used in the cephalometric and frontal sinus analysis. Cephalometric analysis was performed to measure SNA, SNB and ANB angles. Frontal sinus measurements were performed to obtain the frontal sinus height, antero-posterior dimension and frontal sinus lateral projection area. The frontal sinus dimensions were compared between genders with Mann Withney test. Kruskal Wallis and Dunn's post-hoc tests were used to compare the mean differences between the skeletal malocclusions. Spearman's correlation test and linear regression model were also performed. Statistical significance was set at 5%. Regarding skeletal malocclusion, 71 patients presented class I, 81 class II and 10 class III skeletal malocclusion. The frontal sinus height (p=0.009), frontal sinus antero-posterior dimension (p=0.001) and frontal sinus lateral projection area (p=0.007) were bigger in males than in females. The frontal sinus antero-posterior dimension was significantly greater in the class III when compared to the class I (p=0.010) and class II (p=0.027). Frontal sinus lateral projection area was also bigger in class III than class I (p=0.039). In the linear regression model a significant association was observed between frontal sinus lateral projection area and class III (skeletal class I as a reference). In conclusion, our result suggests that the frontal sinus lateral projection area might present morphometric differences in German teenagers with skeletal class III malocclusion.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"35 ","pages":"e245964"},"PeriodicalIF":0.0,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11653665/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143712662","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

Economic Evaluation of Community Water Fluoridation in an Upper-Middle-Income Country. 中高收入国家社区饮水氟化的经济评价。

Brazilian dental journal Pub Date : 2024-12-06 eCollection Date: 2024-01-01 DOI: 10.1590/0103-644020245994

Lorrayne Belotti, Paulo Frazão

{"title":"Economic Evaluation of Community Water Fluoridation in an Upper-Middle-Income Country.","authors":"Lorrayne Belotti, Paulo Frazão","doi":"10.1590/0103-644020245994","DOIUrl":"10.1590/0103-644020245994","url":null,"abstract":"The aim was to estimate the cost-effectiveness and cost-benefit of CWF for schoolchildren according to different population sizes served in Brazil. The economic evaluation was conducted from a societal perspective. Total costs were estimated using four variables across different population sizes: capital cost of initial installation, chemical product costs, system operational costs, and monitoring costs. The effect of CWF was analyzed in the context of the widespread use of fluoridated toothpaste, based on studies with Brazilian population groups. The total cost of dental treatment was estimated, including both direct and indirect costs, with a discount rate of 3.5%. A one-way sensitivity analysis was conducted to test the robustness of the results based on measured parameter values. The costs averted due to CWF were US$174.40 and US$85.67 for children aged 5-8 and 3-12 years, respectively, and US$46.66 for those aged 7-12 years, according to the average effectiveness of CWF for each age group. The cost-effectiveness and cost-benefit ratio results were favorable in all scenarios where the population served was 6,000 or more inhabitants. Scenarios unfavorable to CWF were observed only in populations of up to 2,000 inhabitants. The economic evaluation of CWF in an upper-middle-income country proved to be a cost-effective oral health intervention and more economically advantageous, especially in larger areas for both deciduous and permanent dentition.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"35 ","pages":"e245994"},"PeriodicalIF":0.0,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11654337/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143712692","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 of Maxillary Sinus Reactions and Periapical Pathology in the Maxillary Posterior Teeth: Evaluation Using Cone Beam Computed Tomography. 上颌后牙上颌窦反应与根尖周病理的关系：锥形束计算机断层扫描的评价。

Brazilian dental journal Pub Date : 2024-12-06 eCollection Date: 2024-01-01 DOI: 10.1590/0103-644020245973

Alba Elizabeth do Nascimento Gomes, Carlos Eduardo da Silveira Bueno, Alexandre Sigrist De Martin, Carolina Pessoa Stringheta, Carlos Eduardo Fontana, Daniel Guimarães Pedro Rocha, Ana Grasiela Limoeiro, Wayne Martins Nascimento, Marilia Fagury Videira Marceliano-Alves, Rina Andrea Pelegrine

{"title":"Association of Maxillary Sinus Reactions and Periapical Pathology in the Maxillary Posterior Teeth: Evaluation Using Cone Beam Computed Tomography.","authors":"Alba Elizabeth do Nascimento Gomes, Carlos Eduardo da Silveira Bueno, Alexandre Sigrist De Martin, Carolina Pessoa Stringheta, Carlos Eduardo Fontana, Daniel Guimarães Pedro Rocha, Ana Grasiela Limoeiro, Wayne Martins Nascimento, Marilia Fagury Videira Marceliano-Alves, Rina Andrea Pelegrine","doi":"10.1590/0103-644020245973","DOIUrl":"10.1590/0103-644020245973","url":null,"abstract":"This study aimed to investigate the association between maxillary sinus reactions and periradicular pathology in maxillary posterior teeth using cone-beam computed tomography. The maxillary posterior images of 395 teeth were examined for the presence of periradicular pathology, and the maxillary sinus disease. The proximity between the root apex and the cortical bone of the maxillary sinus using the linear measurement (mm) tool was used (RadiAnt, DICOM viewer, Poznan, Poland). The frequency found from maxillary sinus assessment was subjected to the Kolmogorov-Smirnov normality test, the Kruskal-Wallis test, the chi-square test with Bonferroni correction and a logistic regression analysis. A significance level of 5% was assumed. About 46.6% of the teeth showed a periapical pathology associated with an inflammatory reaction of the maxillary sinus. Among them, thickening of the maxillary sinus mucosa > 3 mm is the most common finding (59.3%). There was no difference between the types of maxillary sinus reactions and the variables studied (p >0.05). Periapical lesions on palatal roots were 2.17 times more likely to develop an inflammatory reaction than other roots (p < 0.05). Women were 2.04 times less likely to develop maxillary changes than men (p < 0.05). The distance between apex and floor and the presence or absence of endodontic treatment were not significantly associated with sinusitis. Periapical pathology could be related to maxillary inflammatory reaction of the sinus.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"35 ","pages":"e245973"},"PeriodicalIF":0.0,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11653666/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143712691","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

The Effect of Different Bleaching Techniques Using 6% Hydrogen Peroxide: Penetration Inside the Pulp Cavity, Bleaching Efficacy and Toxicity. 6%双氧水漂白方法对牙髓腔内渗透、漂白效果及毒性的影响。

Brazilian dental journal Pub Date : 2024-12-06 eCollection Date: 2024-01-01 DOI: 10.1590/0103-644020245975

Gabrielle Gomes Centenaro, Michael Willian Favoreto, Taynara de Souza Carneiro, Michel Wendlinger, Christiane Philippini Ferreira, Lívia Câmara de Carvalho Galvão, Alessandro Dourado Loguercio

{"title":"The Effect of Different Bleaching Techniques Using 6% Hydrogen Peroxide: Penetration Inside the Pulp Cavity, Bleaching Efficacy and Toxicity.","authors":"Gabrielle Gomes Centenaro, Michael Willian Favoreto, Taynara de Souza Carneiro, Michel Wendlinger, Christiane Philippini Ferreira, Lívia Câmara de Carvalho Galvão, Alessandro Dourado Loguercio","doi":"10.1590/0103-644020245975","DOIUrl":"10.1590/0103-644020245975","url":null,"abstract":"This in vitro study aimed to quantify the penetration of hydrogen peroxide (HP), bleaching efficacy (BE) and toxicity in larvae in different bleaching techniques using 6% HP. Sixty maxillary premolars were divided in six groups (n = 10): Pola Luminate (PL), VivaStyle Paint On PIus (VS), PolaDay (PD), White Class (WC) and Whiteness HP Automixx (AM). A group not exposed to bleaching agents was evaluated as a control group (CG). Previously, the initial HP concentration in the bleaching agents was determined via titration and pH was measured with a digital pH meter. The concentration (µg/mL) of HP inside the pulp cavity was assessed using UV-Vis spectrophotometry. The BE (ΔE* ab and ΔE00) was evaluated with a digital spectrophotometer. The toxicity was evaluated in larvae model. Data from HP penetration and color change were evaluated for a one-way ANOVA and the Tukey's test, as well as Kaplan-Meier death curve for toxicity (α = 0.05). VS, PD and AM had an initial concentration lower than that the manufacturers reported. VS had a more acidic pH. PL and WC showed a significantly lower HP amount inside the pulp cavity when compared to VS (p = 0.001). Regarding BE, no significant difference was observed for ΔE* ab (p = 0.38), and ΔE00 (p = 0.42). No toxicity was observed when all 6% HP was compared to GC (p > 0.05). All 6% HP products tested showed bleaching efficacy, low penetration into the pulp chamber and were non-toxic to Tenebrio molitor larvae.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"35 ","pages":"e245975"},"PeriodicalIF":0.0,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11653758/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143712699","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

Antimicrobial Effects of Cannabidiol (CBD)-infused Lozenges against Streptococcus mutans in Oral Health. 大麻二酚（CBD）输注含片对口腔变形链球菌的抗菌作用。

Brazilian dental journal Pub Date : 2024-12-06 eCollection Date: 2024-01-01 DOI: 10.1590/0103-644020245988

Jila Torabi, Henrique Pedro Soares Luis, Gohar Mkrtchyan, Shohreh Derakhshan Alavijeh, Sameen Dezfoli, Michelle Hurlbutt

{"title":"Antimicrobial Effects of Cannabidiol (CBD)-infused Lozenges against Streptococcus mutans in Oral Health.","authors":"Jila Torabi, Henrique Pedro Soares Luis, Gohar Mkrtchyan, Shohreh Derakhshan Alavijeh, Sameen Dezfoli, Michelle Hurlbutt","doi":"10.1590/0103-644020245988","DOIUrl":"10.1590/0103-644020245988","url":null,"abstract":"Cannabidiol presents several benefits, including but not limited to its analgesic, antioxidant, anti-inflammatory, antimicrobial, anti-pruritic, and anti-cancer properties. In this clinical trial, the antimicrobial impact of CBD-infused lozenges on Streptococcus mutans was examined using quantitative polymerized chain reaction (qPCR) bacterial analysis. This clinical trial involved 30 dental hygiene and nursing students who met the inclusion criteria participated in the study and were divided into two groups: experimental and control. The experimental group was given CBD-infused lozenges for 15 days, while the control group received sugar-free candy. Participants consumed one CBD-infused lozenge (300 mg) daily for 15 days, allowing it to dissolve slowly in the mouth for gradual absorption. The study focused on measuring changes in the salivary levels of Streptococcus mutans using quantitative polymerized chain reaction (qPCR) tests. Saliva samples were collected, and DNA extracted for qPCR analysis, assessing the bacterial load. The results, analyzed using a t-test, showed a significant decrease in Streptococcus mutans levels in the experimental group compared to the control group, with a statistically significant difference (p=0.0299).These findings suggest that cannabidiol may effectively reduce Streptococcus mutans in saliva, thus potentially helping to lower the risk of tooth decay as a multifactorial disease. This study underscores the potential of cannabidiol in enhancing oral health and calls for further research to explore its therapeutic applications in dental care.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"35 ","pages":"e245988"},"PeriodicalIF":0.0,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11653757/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143712666","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 Long-Term Treatment with Alendronate on Bone Repair and Mineralization Around Implants in Rats. 阿仑膦酸钠长期治疗对大鼠种植体周围骨修复和矿化的影响。

Brazilian dental journal Pub Date : 2024-12-06 eCollection Date: 2024-01-01 DOI: 10.1590/0103-644020235751

Mario Henrique Arruda Verzola, Fausto Frizzera, Paulo Sergio Cerri, Ubirajara Pereira Rodrigues-Filho, Silvana Regina Perez Orrico, Rafael Scaf de Molon

{"title":"Effect of Long-Term Treatment with Alendronate on Bone Repair and Mineralization Around Implants in Rats.","authors":"Mario Henrique Arruda Verzola, Fausto Frizzera, Paulo Sergio Cerri, Ubirajara Pereira Rodrigues-Filho, Silvana Regina Perez Orrico, Rafael Scaf de Molon","doi":"10.1590/0103-644020235751","DOIUrl":"10.1590/0103-644020235751","url":null,"abstract":"The aim of this study was to evaluate the effects of long-term alendronate administration on bone repair and mineralization around osseointegrated implants in rats. A total of 160 female Wistar rats were randomly assigned to two groups: the control group (CTL) and the alendronate group (ALD). The ALD group received a subcutaneous injection of sodium alendronate (1 mg/kg/week), while the CTL group received weekly injections of saline solution. After 120 days of treatment, a bilateral implant was placed in the tibia of each rat. Ten rats from each group were euthanized at 5, 10, 15, 20, 25, 30, 45, or 60 days post-surgery. Picro-sirius red staining was utilized to assess the distribution and arrangement of collagen fibers near the implant threads. Bone mineralization mapping of the native bone adjacent to the implant was performed using images obtained through scanning electron microscopy (SEM) across all follow-up periods. SEM-based mineralization mapping revealed an increase in both the degree and homogeneity of bone mineralization in the ALD group compared to the CTL group. Alendronate administration affected collagen arrangement and distribution, leading to a connective tissue with reduced organization and thinner collagen fiber bundles. In conclusion, the findings demonstrated that alendronate administration resulted in a higher degree and homogeneity of bone mineralization, accompanied by reduced collagen content and organization, suggesting an impairment in bone remodeling around dental implants.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"35 ","pages":"e235751"},"PeriodicalIF":0.0,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11653788/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143712694","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 lip diseases in peddlers on two beaches of Guarujá/Brazil: An observational study. 瓜鲁耶<e:1> /巴西两个海滩小贩唇部疾病的评估：一项观察性研究。

Brazilian dental journal Pub Date : 2024-12-06 eCollection Date: 2024-01-01 DOI: 10.1590/0103-6440202406044

Caio Vinicius G Roman-Torres, Edson Gracia Neto, Angelica Castro Pimentel, Humberto Oswaldo Schwartz-Filho, Wilson Roberto Sendyk, Luana Campos

{"title":"Evaluation of lip diseases in peddlers on two beaches of Guarujá/Brazil: An observational study.","authors":"Caio Vinicius G Roman-Torres, Edson Gracia Neto, Angelica Castro Pimentel, Humberto Oswaldo Schwartz-Filho, Wilson Roberto Sendyk, Luana Campos","doi":"10.1590/0103-6440202406044","DOIUrl":"10.1590/0103-6440202406044","url":null,"abstract":"Sun exposure is responsible for most lip lesions and, when diagnosed late, the prognosis is unfavorable. Treatments are usually mutilating, palliative, and expensive. This study aimed to evaluate the prevalence of lip diseases and factors associated with its development in peddlers on two beaches of the Guarujá/Brazil coast. Data were collected by clinical examination and use of a questionnaire of 182 peddlers on the beaches. They also received an explanatory folder with information about oral care, and the importance of the use of sunscreen for cancer prevention. All workers diagnosed with lip injuries were referred for dental treatment. The prevalence of lip alterations was 40.7% (n = 70), furthermore, smokers included 27.5%, and alcohol consumption was 20.3%. Regarding selfie protection, 72% of workers reported wearing a hat or cap frequently, 48.4% reported using body sunscreen, and only 11.5% reported using lip balm. There were no significant differences in factors such as alcoholism and smoking related to lip lesions diagnosis. However, when characterizing these factors, 48.6% of those who drink, or smoke have lip alterations. It can be concluded that the population of peddlers on the beaches of Guarujá has a high rate of lip alteration which suggests the need to implement educational health strategies aimed at informing the population about risk factors and preventive measures for lip diseases.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"35 ","pages":"e246044"},"PeriodicalIF":0.0,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11653662/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143712695","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

Kennedy class III and IV dental arches: Trueness analysis of digitization methods and 3D-printing step. Kennedy III类和IV类牙弓：数字化方法和3d打印步骤的真实性分析。

Brazilian dental journal Pub Date : 2024-12-06 eCollection Date: 2024-01-01 DOI: 10.1590/0103-6440202405980

Lucas Moreira Mendonça, Marianna Soares Nogueira Borges, Ayodele Alves Amorim, Bruna Neves de Freitas, Camila Tirapelli

{"title":"Kennedy class III and IV dental arches: Trueness analysis of digitization methods and 3D-printing step.","authors":"Lucas Moreira Mendonça, Marianna Soares Nogueira Borges, Ayodele Alves Amorim, Bruna Neves de Freitas, Camila Tirapelli","doi":"10.1590/0103-6440202405980","DOIUrl":"10.1590/0103-6440202405980","url":null,"abstract":"This study aims to evaluate the trueness of Kennedy Class III and IV dental arches digitized by different methods and three-dimensionally (3D) printed using stereolithography technology in an in vitro setup. Reference casts (maxillary Kennedy class III and IV) were produced by computer assisted design and manufacture, and linearly measured at occlusocervical, interarch, and edentulous space dimensions. Intraoral scanner (IOS), extraoral scanner (EOS) and cone beam computed tomography (CBCT) digitized the reference casts. Each digital file was 3D-printed using stereolithography technology, totalizing sixty experimental casts (n=10 per group). The same measurements taken from the reference casts were performed on experimental casts. Two-way ANOVA and Bonferroni post-test were used for trueness (distortion between the experimental and reference casts). Distortion was significantly greater for class IV when compared with class III and increased after the 3D-printing step. Among digitizing methods, IOS and EOS had a similar performance and casts from CBCT showed higher distortion, reaching -1.0 and -1.4 mm in the edentulous spaces of digital and 3D-printed cast, respectively. It was possible to conclude that the trueness of Kennedy class III and IV arches were different according to digitizing processes with higher distortion at the edentulous spaces when the cast was digitized by CBCT and converted to a 3D model, compared to IOS and EOS; and in the Kennedy class IV dental arch condition.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"35 ","pages":"e245980"},"PeriodicalIF":0.0,"publicationDate":"2024-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11653756/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143712697","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}

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