Brazilian dental journal最新文献

Actinic cheilitis and associated factors in fishermen living in a rural riverside community in the Amazon. 居住在亚马逊河畔农村社区渔民的光化性舌炎及其相关因素。

Brazilian dental journal Pub Date : 2025-07-11 eCollection Date: 2025-01-01 DOI: 10.1590/0103-644020256302

Romyne Bastos Solano E Silva, Ana Paula Corrêa de Queiroz Herkrath, Matheus Albuquerque do Valle, Carla Rilane Bernardes Guimarães, Fernando José Herkrath, Juliana Vianna Pereira

{"title":"Actinic cheilitis and associated factors in fishermen living in a rural riverside community in the Amazon.","authors":"Romyne Bastos Solano E Silva, Ana Paula Corrêa de Queiroz Herkrath, Matheus Albuquerque do Valle, Carla Rilane Bernardes Guimarães, Fernando José Herkrath, Juliana Vianna Pereira","doi":"10.1590/0103-644020256302","DOIUrl":"10.1590/0103-644020256302","url":null,"abstract":"The study evaluated the prevalence of actinic cheilitis and associated factors in fishermen living in a rural riverside community in the Amazon, Brazil. A cross-sectional study was conducted with male artisanal fishermen. Demographic, socioeconomic, behavioral, and occupational characteristics were assessed using a questionnaire. Actinic cheilitis was evaluated by a clinical examination of the lips, and lesions were classified as grades I (mild), II (moderate), or III (severe). Factors associated with actinic cheilitis were identified by Poisson regression. Fifty-six fishermen were evaluated (mean age = 41.7 years). The average time spent fishing was 27.9 years, with 9.8 hours per day. The majority did not use sunscreen (75%) or lip balm (89.3%) and used uncovered boats (85.7%). Overall, 67.8% had not used dental health services in the last year and 35.7% had their last consultation more than three years ago. The prevalence of actinic cheilitis was 3.5% in grade I, 28.6% in grade II, and 28.6% in grade III. Having white skin and not having visited the dentist in the last three years was associated with a higher prevalence of the lesion while using lip balm was a protective factor. The study showed that riverside fishermen living in a location with a high incidence of ultraviolet radiation had a high prevalence and severity of actinic cheilitis, indicating the need to ensure the use of health services and the adoption of preventive strategies to reduce the occurrence of this potentially malignant oral disorder in these locations.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e236302"},"PeriodicalIF":0.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12266621/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144644576","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

Resin matrix ceramic crowns cemented on titanium bases: effect of surface treatments and stress distribution. 钛基树脂基陶瓷冠：表面处理和应力分布的影响。

Brazilian dental journal Pub Date : 2025-07-11 eCollection Date: 2025-01-01 DOI: 10.1590/0103-644020256140

Mariana Itaborai Moreira Freitas, Mirelle Maria Ruggiero, Raissa Micaella Marcello-Machado, Vanessa Felipe Vargas-Moreno, Andréa Cândido Dos Reis, Altair Antoninha Del Bel Cury

{"title":"Resin matrix ceramic crowns cemented on titanium bases: effect of surface treatments and stress distribution.","authors":"Mariana Itaborai Moreira Freitas, Mirelle Maria Ruggiero, Raissa Micaella Marcello-Machado, Vanessa Felipe Vargas-Moreno, Andréa Cândido Dos Reis, Altair Antoninha Del Bel Cury","doi":"10.1590/0103-644020256140","DOIUrl":"10.1590/0103-644020256140","url":null,"abstract":"Using Titanium bases (TBs) has shown excellent results in implant-supported rehabilitation. However, failures due to decementation can occur, and bonding success depends on the TB surface treatment. This study evaluated the effect of different TB surface treatments on the retention and failure mode of resin matrix ceramic (RMC) crowns after thermocycling and the stress distribution of RMC cemented on the TBs. 120 TBs were divided into eight groups (n = 15) according to the material (resin nanoceramic (RNC) and polymer-infiltrated ceramic network (PICN)) and the surface treatment of the TBs: no treatment (NT); Airborne-particle abrasion with 50μm aluminum oxide (Al2O3) (AL); Airborne-particle abrasion with 30μm silica-modified Al2O3 particles (SIAL30) and Airborne-particle abrasion with 110μm silica-modified Al2O3 particles (SIAL110). After thermocycling, retention, and failure modes were analyzed. Retention data underwent two-way ANOVA and Tukey Post Hoc test (α=0.05). Finite element analysis (FEA) assessed stress distribution according to maximum principal stress (σmax) on the crown and maximum shear stress (τmax) on the cement layer. No significant difference was observed among the surface treatments or their interaction with the material (p > 0.05). However, RNC presented higher retention force values for all surface treatments (p<0.001). FEA showed a higher σmax for PICN (317.31 MPa) than RNC (277.69 MPa), while τmax was higher for RNC (246.54MPa) compared to PICN (213.55MPa). Most failures were cohesive in the material. In conclusion, surface treatments did not influence the retention of crowns to TBs, with the RNC having higher retention and better stress distribution for the crown.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e236140"},"PeriodicalIF":0.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12266619/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144644579","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 physicochemical and mechanical properties of two experimental premixed calcium silicate sealers. 两种实验性预混硅酸钙密封剂的理化和力学性能评价。

Brazilian dental journal Pub Date : 2025-07-11 eCollection Date: 2025-01-01 DOI: 10.1590/0103-644020255937

Maria Carolina Guiotti de Oliveira, Stefani Jovedi Rosa, Bruno Carvalho de Vasconcelos, Rodrigo Ricci Vivan, Murilo Priori Alcalde, Marco Antonio Hungaro Duarte

{"title":"Evaluation of physicochemical and mechanical properties of two experimental premixed calcium silicate sealers.","authors":"Maria Carolina Guiotti de Oliveira, Stefani Jovedi Rosa, Bruno Carvalho de Vasconcelos, Rodrigo Ricci Vivan, Murilo Priori Alcalde, Marco Antonio Hungaro Duarte","doi":"10.1590/0103-644020255937","DOIUrl":"10.1590/0103-644020255937","url":null,"abstract":"The study aimed to evaluate the physicochemical properties of two experimental root canal sealers (CEO 1 and CEO 2) and compare them with Bio-C Sealer (BC) and AH Plus Bioceramic (AHPB). Setting time was evaluated following ISO 6876 Standard, radiopacity was assessed by radiographic analysis in millimeters of aluminum, and flow was also evaluated following ISO 6876. Solubility was assessed through mass loss (%) after 7 days of immersion in distilled water, hydroxyl and calcium ions release was measured by pH-meter and atomic absorption spectrophotometer, respectively. Push-out was tested at the universal test machine. The data were statistically compared using a 5% significance level. CEO 1 and CEO 2 showed higher setting times (p<0.05) and all sealers demonstrated radiopacity higher than 3mm/Al; however, lower radiopacity and flow values were detected in the presence of both experimental sealers when compared with BC and AHPB (p<0.05). No difference was found among all sealers for solubility (p>0.05). BC and CEO 2 had higher pH values at the initial time (p<0.05) while AHPB at the final time (p<0.05). In general, no significant difference between all sealers at all times was observed, except at 168h for CEO 1, which released more calcium ions than CEO 2 (p<0.05). BC and AHPB provided a superior push-out (p<0.05), and cohesive failures were predominant for all sealers. Both experimental sealers exhibited physicochemical properties similar to commercial endodontics sealers.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e235937"},"PeriodicalIF":0.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12266618/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144644577","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

Glass Ionomer Cements with Halloysite-CHX: Physicochemical Properties, Antimicrobial Activity, Cell Viability. 含高石chx的玻璃离子水泥：理化性质、抗菌活性、细胞活力。

Brazilian dental journal Pub Date : 2025-07-11 eCollection Date: 2025-01-01 DOI: 10.1590/0103-644020256350

Fabiola Rodrigues Sampaio Nunes, Thaís Bezerra da Maceno Oliveira, Shirley Maria de Nazaré Rocha Cardoso, Rayssa Ferreira Cavaleiro de Macêdo, Ana Paula Silva de Azevedo Dos Santos, Paulo Vitor Campos Ferreira, José Bauer

{"title":"Glass Ionomer Cements with Halloysite-CHX: Physicochemical Properties, Antimicrobial Activity, Cell Viability.","authors":"Fabiola Rodrigues Sampaio Nunes, Thaís Bezerra da Maceno Oliveira, Shirley Maria de Nazaré Rocha Cardoso, Rayssa Ferreira Cavaleiro de Macêdo, Ana Paula Silva de Azevedo Dos Santos, Paulo Vitor Campos Ferreira, José Bauer","doi":"10.1590/0103-644020256350","DOIUrl":"10.1590/0103-644020256350","url":null,"abstract":"This study evaluated the physicochemical, cell viability, and antimicrobial properties of conventional glass ionomer cement (GIC) modified by the incorporation of halloysite nanotubes (HNT) doped with chlorhexidine (CHX). HNT-CHX was added to GIC at concentrations of 2.5% and 5% by weight, forming three experimental groups: a control group (GIC only), a group with 2.5% HNT-CHX, and another with 5% HNT-CHX. Hourglass-shaped specimens (n=10) were used to measure cohesive strength and elastic modulus, while fractured specimens were subjected to microhardness testing (n = 5). To assess the alkalinizing activity (pH) and the release of F-, Ca+2, and PO4-3 ions (n = 3), discs were prepared for CHX release analysis by UV-vis after 24 hours. Antimicrobial activity was tested against S. mutans biofilm (CFU/ml), and material cell viability was determined using the MTT assay. Results showed that the 5% HNT-CHX group presented the lowest cohesive strength, while the 2.5% and 5% HNT-CHX groups displayed modulus values similar to the control and did not affect microhardness. All groups exhibited an acidic pH with the control group releasing higher levels of F-, Ca+2, and PO4 -3 ions. The HNT-CHX 2.5% and HNT-CHX 5% groups reduced fluoride ion release compared to the control (GIC). The 5% HNT-CHX group showed the highest levels of free CHX and demonstrated bactericidal activity against S. mutans in CFU analysis. None of the materials presented cytotoxicity. In conclusion, incorporating 2.5% and 5% HNT-CHX affected the mechanical properties and ion release of the GIC. HNT-CHX 5% group exhibited antimicrobial against S. mutans.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e236350"},"PeriodicalIF":0.0,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12266620/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144644578","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

Influence of Bioceramic Clinker particle size, radiopacifier, and liquids on their physicochemical properties. 生物陶瓷熟料粒度、放射性混浊剂和液体对其理化性质的影响。

Brazilian dental journal Pub Date : 2025-04-14 eCollection Date: 2025-01-01 DOI: 10.1590/0103-644020256326

Karina Ines Medina Carita Tavares, Airton Oliveira Santos-Junior, Jáder Camilo Pinto, Fernanda Ferrari Esteves Torres, Marco Antonio Hungaro Duarte, Juliane Maria Guerreiro-Tanomaru, Mário Tanomaru-Filho

{"title":"Influence of Bioceramic Clinker particle size, radiopacifier, and liquids on their physicochemical properties.","authors":"Karina Ines Medina Carita Tavares, Airton Oliveira Santos-Junior, Jáder Camilo Pinto, Fernanda Ferrari Esteves Torres, Marco Antonio Hungaro Duarte, Juliane Maria Guerreiro-Tanomaru, Mário Tanomaru-Filho","doi":"10.1590/0103-644020256326","DOIUrl":"https://doi.org/10.1590/0103-644020256326","url":null,"abstract":"This study evaluated the addition of calcium tungstate (CaWO4) as a radiopacifier and the manipulation with distilled water (DW) or liquid with additives (LA) on the physicochemical properties of Clinker (CL; Angelus) with different particle sizes (2 to 30 µm and <2 µm), compared to White MTA and MTA Repair HP. Initial and final setting times (ST) were evaluated according to ISO 6876:2012 and ASTM C266-03 standards. Radiopacity was assessed following ISO guidelines, and solubility was evaluated after immersion in distilled water or phosphate-buffered saline for 7 days. The pH was measured using a digital pH meter in 1, 3, 7, 14, 21, and 28 days. ANOVA and Tukey and unpaired t-tests were performed (α=0.05). CL 2 to 30 µm showed shorter initial ST and higher final ST when manipulated with LA (p<0.05). The addition of CaWO4 increased the CL radiopacity for both particle sizes (p<0.05) but did not influence ST, solubility, and pH (p>0.05). All materials presented alkaline pH (p>0.05), especially in 24 hours and 7 days. Regarding the solubility, all groups exhibited mass gain, while White MTA in distilled water demonstrated mass loss (p<0.05). CL 2 to 30 µm + CaWO4 showed greater mass gain and higher radiopacity when manipulated with LA than DW (p<0.05). CL <2 µm manipulated with LA provides a shorter final ST. Both particle sizes positively influence the alkalization capacity of CL, especially in the initial periods. The addition of calcium tungstate and manipulation using LA showed adequate physicochemical properties for clinical application.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e246326"},"PeriodicalIF":0.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11996162/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144057257","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

Individual and contextual factors associated with orofacial dysfunction in schoolchindren. 与学龄期儿童口面部功能障碍相关的个体和环境因素。

Brazilian dental journal Pub Date : 2025-04-14 eCollection Date: 2025-01-01 DOI: 10.1590/0103-644020256228

Luiza Jordânia Serafim de Araújo, Monalisa Cesarino Gomes, Ramon Targino Firmino, Edja Maria Melo de Brito Costa, Saul Martins de Paiva, Ana Flávia Granville-Garcia

{"title":"Individual and contextual factors associated with orofacial dysfunction in schoolchindren.","authors":"Luiza Jordânia Serafim de Araújo, Monalisa Cesarino Gomes, Ramon Targino Firmino, Edja Maria Melo de Brito Costa, Saul Martins de Paiva, Ana Flávia Granville-Garcia","doi":"10.1590/0103-644020256228","DOIUrl":"https://doi.org/10.1590/0103-644020256228","url":null,"abstract":"To investigate individual and contextual factors associated with orofacial dysfunction in schoolchildren. A cross-sectional study was conducted with 739 children eight to ten years of age. The children answered questionnaires addressing orofacial dysfunction and anxiety. Guardians provided information on sociodemographic characteristics, sleep disturbances, and family cohesion. Examiners investigated the presence of orofacial dysfunction, dental caries, malocclusion, and traumatic dental injuries (Andreasen criteria) (Kappa>0.80). The type of school and average monthly income of the school neighborhood were the contextual variables. Descriptive statistics were performed to characterize the sample. Unadjusted and adjusted (p <0.05) multilevel Poisson regression models were run. The prevalence of orofacial dysfunction was 33.3%. After adjustment by the contextual variables, a lower family income, a larger quantity of carious teeth, the presence of traumatic dental injury, severe/very severe malocclusion, the presence of sleep disturbances, and anxiety remained associated with orofacial dysfunction, whereas definite malocclusion was a protection factor. In terms of context, attending a public school was associated with orofacial dysfunction. Orofacial dysfunction was influenced by a lower family income, a larger quantity of carious teeth, and the presence of traumatic dental injury, sleep disturbances, and anxiety. Moreover, attending a public school was the contextual determinant that played a significant role in the outcome.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e246228"},"PeriodicalIF":0.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11996160/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143996932","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

Titanium Particles Released from Dental Implants Under Fluoride Exposure Interact with Macrophages. 氟暴露下牙种植体释放的钛颗粒与巨噬细胞相互作用

Brazilian dental journal Pub Date : 2025-04-14 eCollection Date: 2025-01-01 DOI: 10.1590/0103-644020256187

Waad Kheder, Soumya Sheela, A R Samsudin, Sausan Al Kawas, Nadia Khalifa, Ali Qabbani

{"title":"Titanium Particles Released from Dental Implants Under Fluoride Exposure Interact with Macrophages.","authors":"Waad Kheder, Soumya Sheela, A R Samsudin, Sausan Al Kawas, Nadia Khalifa, Ali Qabbani","doi":"10.1590/0103-644020256187","DOIUrl":"https://doi.org/10.1590/0103-644020256187","url":null,"abstract":"This study is designed to investigate the influence of fluoride and pH value on the release of titanium particles from Ti6Al4V dental implants with hydrophobic microrough surface produced by sandblasting and acid-etching techniques; and correlate particle size to their uptake by macrophages and expression of inflammatory cytokines. Fifteen dental implants were immersed in five test solutions with different fluoride concentrations and pH values. Three control implants were scanned using a scanning electron microscope and fifteen test implants were also scanned after their immersion in the test solutions. The immersion solutions were analyzed for titanium particles/ions size-range and amount. The uptake of titanium particles by macrophages and expression of Il-1 β and IL-8 following their exposure to titanium particles were investigated. Test solutions with high fluoride and acidity resulted in the release of micro-size titanium particles (4551.7 ± 114.5 nm and 2783 ± 101.13 nm); while those with low fluoride, neutral pH, and alkaline environment resulted in the release of nano-size titanium particles (431.2 ± 80.6 nm, 448.3 ± 112 nm, and 484.5 ± 85.3 nm respectively). There was an increase in the uptake of nanoparticles by macrophages without altering their membrane integrity. The increase in expression of IL-1β and IL-8 by M0 macrophages after exposure to titanium dioxide particles may facilitate our understanding of immune cell population-specific molecular events deriving the peri-implant inflammation in response to titanium particles. Fluoride and pH values influence the release of titanium particles from the implant's surface. The activated inflammatory mediators are key to imbalance in osteoblast-osteoclast activity and failure of implant osseointegration.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e246187"},"PeriodicalIF":0.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11996161/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144048830","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

Enamel Deproteinization with Sodium Hypochlorite: Effects on Ceramic Bracket Bond Strength. 次氯酸钠脱釉对陶瓷支架粘结强度的影响。

Brazilian dental journal Pub Date : 2025-04-14 eCollection Date: 2025-01-01 DOI: 10.1590/0103-644020256106

Priscila Cordeiro, José Guilherme Neves, Midori Tsuzuki, Anália Gabriela Ferraz Facury, Lourenço Correr-Sobrinho, Ana Rosa Costa

{"title":"Enamel Deproteinization with Sodium Hypochlorite: Effects on Ceramic Bracket Bond Strength.","authors":"Priscila Cordeiro, José Guilherme Neves, Midori Tsuzuki, Anália Gabriela Ferraz Facury, Lourenço Correr-Sobrinho, Ana Rosa Costa","doi":"10.1590/0103-644020256106","DOIUrl":"https://doi.org/10.1590/0103-644020256106","url":null,"abstract":"To assess the efficiency of different concentrations of sodium hypochlorite (NaOCl) on the bonding of ceramic brackets to dental enamel using different bonding protocols. Ceramic, a polycrystalline bracket, was bonded to 90 extracted bovine incisors using primer + Transbond XT (P+TXT); Optibond S adhesive + Transbond XT (OS+TXT), and OS + Orthocem (OS+OC). Three concentrations of NaOCl (0%, 2.5%, and 5.25%) were used for each material, resulting in nine experimental groups (n=10). The shear bond strength (SBS) assay was performed on a universal testing machine. The surface morphology of the enamel and tooth/bonding material interface was examined under a scanning electron microscope. Kruskal-Wallis and Dunn's tests were performed to compare the non-parametric data (ARI scores). SBS data were analyzed using a generalized linear model. All analyses were performed using the R program and with a significance level of 5%. No significant differences in SBS between the groups with different concentrations of NaOCl (p>0.05). OS+OC group yielded the lowest bond strength values (3.35 MPa_0%, 4.90 MPa_2.5%, 4.68 MPa_5.25%) compared to the other groups, regardless of NaOCl (p<0.05). No significant difference between the materials regarding the ARI score (p>0.05). OS+TXT-5.25% showed significantly higher scores (14.4 MPa) than OS+TXT-2.5% (9.17 MPa) (p<0.05). The surface morphology analysis revealed a change in the etching pattern for types 1 and 2 when NaOCl was used. The different concentrations of NaOCl previously applied onto the enamel surface did not enhance bond strength. OS+OC should not be recommended for bonding with fixed ceramic orthodontic devices.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e246106"},"PeriodicalIF":0.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11996157/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144061386","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

Psychometric properties of the Brazilian version of the Patient Satisfaction Questionnaire. 巴西版患者满意度问卷的心理测量特性。

Brazilian dental journal Pub Date : 2025-04-14 eCollection Date: 2025-01-01 DOI: 10.1590/0103-644020256206

Luisa Gatti-Reis, Renata Negreiros Alvarenga, Xiangqun Ju, Lisa Jamieson, Lucas Guimarães Abreu, Saul Martins Paiva

{"title":"Psychometric properties of the Brazilian version of the Patient Satisfaction Questionnaire.","authors":"Luisa Gatti-Reis, Renata Negreiros Alvarenga, Xiangqun Ju, Lisa Jamieson, Lucas Guimarães Abreu, Saul Martins Paiva","doi":"10.1590/0103-644020256206","DOIUrl":"https://doi.org/10.1590/0103-644020256206","url":null,"abstract":"This study aimed to assess the psychometric properties of the Brazilian version of the Patient Satisfaction Questionnaire (PSQ) which assesses the satisfaction of adolescents with orthodontic treatment. The PSQ is a 58-item self-report instrument presenting six subscales (doctor-patient relationship, situational aspects, dentofacial improvement, psychosocial improvement, dental function, and a residual category). The psychometric properties of the Brazilian version of the PSQ (B-PSQ) were assessed in a cross-sectional study with 111 adolescents between 11-18 years who had undergone orthodontic treatment. The sample's features and the questionnaire's characteristics (including the determination of the floor and ceiling effect) were assessed with descriptive statistics. The instrument's internal consistency was assessed by Cronbach's alpha and stability with the intraclass correlation coefficient (ICC) in test-retest reliability. The convergent and discriminant construct validity was also assessed. Data included responses from 106 adolescents, of which 58 (54.7%) were female. The percentage of individuals reaching the floor effect was 0% in all subscales. In four subscales, the percentage of individuals reaching the ceiling effect was <15%. The B-PSQ showed excellent reliability for the total score (Cronbach's alpha=0.919; ICC=0.918), ranging from good to excellent for all subscales. B-PSQ's total score exhibited a high correlation with all five subscales (ρ>0.50). Scores of young adolescents (10-14 years) were significantly higher in the dental function (p=0.018) and situational aspects (p=0.003) subscales, showing the discriminant validity of the instrument. The B-PSQ has good psychometric properties regarding stability and appears to be a valuable instrument to assess the satisfaction of Brazilian adolescents with orthodontic treatment.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e246206"},"PeriodicalIF":0.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11996159/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144004418","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

Bond strength between acrylic resin and artificial tooth treated with experimental silane with thio-urethane. 实验硅烷与硫氨基甲酸乙酯处理的丙烯酸树脂与人工牙的粘结强度。

Brazilian dental journal Pub Date : 2025-04-14 eCollection Date: 2025-01-01 DOI: 10.1590/0103-644020256136

Leonardo Guimarães Sonehara, Carmem Silvia Pfeifer, Ana Paula Piovezan Fugolin, Mario Alexandre Coelho Sinhoreti, Rafael Leonardo Xediek Consani

{"title":"Bond strength between acrylic resin and artificial tooth treated with experimental silane with thio-urethane.","authors":"Leonardo Guimarães Sonehara, Carmem Silvia Pfeifer, Ana Paula Piovezan Fugolin, Mario Alexandre Coelho Sinhoreti, Rafael Leonardo Xediek Consani","doi":"10.1590/0103-644020256136","DOIUrl":"https://doi.org/10.1590/0103-644020256136","url":null,"abstract":"This in vitro study evaluated the bond strength between thermo-activated acrylic resin and artificial tooth treated with experimental silane incorporated with thio-urethane. Artificial molar teeth were individually fixed in 50mm long cylindrical wax sticks and traditionally included in metal flasks with type III plaster coated with laboratory silicone. The tooth/wax sets were removed from the flask, the tooth separated from the wax stick, and the fitting area was cleaned with household detergent. Teeth were separated into three groups according to fitting area treatments (n=10): CON (Control, no treatment or silane application), ABR (Abrasion with diamond tip), and JAT (Blasting with 50μm aluminum oxide particles). Tooth fitting area treatment was associated with PALABOND commercial silane application (PS) or experimental silane incorporated with thio-urethane (ES). Teeth were replaced in the plaster mold, and the acrylic resin traditionally flask pressed and polymerized in a heated water bath. Tooth/resin sets were individually fixed in rigid PVC tubes with chemically activated acrylic resin, leaving a space of 1 mm between the tooth/PVC tube top, and submitted to the shear strength test in a universal test machine. Shear strength data were evaluated for normality, and subjected to one-way ANOVA and Tukey's test (5%). JAT+PS showed greater strength followed by ABR+ES. CON and JAT+ES showed lowest values and ABR+PS was intermediate. In conclusion, the artificial teeth treatments with experimental silane incorporated with thio-urethane associated with blasting or abrasion promoted different strength values when bonded to acrylic resin for denture base.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"36 ","pages":"e246136"},"PeriodicalIF":0.0,"publicationDate":"2025-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11996154/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144059012","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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