Brazilian dental journal最新文献_第5页

Physicochemical properties, cytotoxicity and bioactivity of a ready-to-use bioceramic repair material. 一种现成的生物陶瓷修复材料的物理化学性质、细胞毒性和生物活性。

Brazilian dental journal Pub Date : 2023-01-01 DOI: 10.1590/0103-6440202304974

Lívia Bueno Campi, Elisandra Márcia Rodrigues, Fernanda Ferrari Esteves Torres, José Maurício Dos Santos Nunes Reis, Juliane Maria Guerreiro-Tanomaru, Mário Tanomaru-Filho

{"title":"Physicochemical properties, cytotoxicity and bioactivity of a ready-to-use bioceramic repair material.","authors":"Lívia Bueno Campi, Elisandra Márcia Rodrigues, Fernanda Ferrari Esteves Torres, José Maurício Dos Santos Nunes Reis, Juliane Maria Guerreiro-Tanomaru, Mário Tanomaru-Filho","doi":"10.1590/0103-6440202304974","DOIUrl":"https://doi.org/10.1590/0103-6440202304974","url":null,"abstract":"The aim of this study was to evaluate the physicochemical properties, cytotoxicity and bioactivity of a ready-to-use bioceramic material, Bio-C Repair (Angelus), in comparison with White MTA (Angelus) and Biodentine (Septodont). The physicochemical properties of setting time, radiopacity, pH, solubility, dimensional and volumetric changes were evaluated. Biocompatibility and bioactivity were assessed in Saos-2 osteoblast cell cultures by the MTT assay 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide), Neutral Red (NR), Alizarin Red (ARS), and cell migration tests. Statistical analysis was performed by ANOVA, Tukey or Bonferroni tests (α = 0.05). Bio-C Repair had the longest setting time (p < 0.05), but radiopacity and solubility were accordance with the ISO 6876/2012 standards, besides linear expansion. Bio-C Repair and MTA had similar volumetric change (p > 0.05); lower than Biodentine (p < 0.05). All the materials evaluated had an alkaline pH. Bio-C Repair was cytocompatible and promoted mineralized nodule deposition in 21 days and cell migration in 3 days. In conclusion, Bio-C Repair had adequate radiopacity above 3mm Al, solubility less than 3%, dimensional expansion, and low volumetric change. In addition, Bio-C Repair promoted an alkaline pH and presented bioactivity and biocompatibility similar to MTA and Biodentine, showing potential for use as a repair material.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"34 1","pages":"29-38"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10027101/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9153296","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

Anticaries potential of a fluoride foam. 氟化泡沫的抗龋潜力。

Brazilian dental journal Pub Date : 2023-01-01 DOI: 10.1590/0103-6440202305287

Larissa Caroliny de Brito Benedito, Antônio Pedro Ricomini-Filho, Cinthia Pereira Machado Tabchoury, Jaime Aparecido Cury

{"title":"Anticaries potential of a fluoride foam.","authors":"Larissa Caroliny de Brito Benedito, Antônio Pedro Ricomini-Filho, Cinthia Pereira Machado Tabchoury, Jaime Aparecido Cury","doi":"10.1590/0103-6440202305287","DOIUrl":"10.1590/0103-6440202305287","url":null,"abstract":"Foam has been used worldwide as a vehicle for the professional application of fluoride and hypothetically should have the same anticaries potential as conventional fluoride gel (F-gel) in terms of the formation of reaction products with enamel. Thus, the ability of Flúor Care® foam (FGM, Joinville, SC, Brazil, 12,300 ppm F, acidulated) to react with enamel was evaluated in comparison with Flúor gel® (DFL, Rio de Janeiro, RJ, Brazil, 12,300 ppm F, acidulated). Slabs (n=10/group) of sound enamel and with caries lesion were used, in which the concentrations of total fluoride (TF), and loosely (CaF2-like) and firmly (FAp) bound types were determined. The importance of agitation during application was previously tested. The determinations were made with fluoride ion-specific electrode and the results were expressed in μg F/cm² of the treated enamel area. ANOVA and Tukey tests were used to analyze the difference among treatments, independently for sound and carious enamel. The agitation of the products during application significantly increased the reactivity of the foam (p<0.05), but not that of the gel (p>0.05). The foam did not differ from F-gel (p>0.05) concerning the formation of TF and CaF2-like in sound or carious enamel. Regarding FAp, the foam did not differ from F-gel (p>0.05) in the carious enamel, but the concentration in the sound was lower (p<0.05). The results show that this commercial fluoride foam tested needs to be agitated during application to improve its reactivity with enamel, which raises a question about other brands.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"34 1","pages":"89-98"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10027102/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9153297","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

Untreated caries and serum vitamin D levels in children and youth of the United States: NHANES 2013-2014. 美国儿童和青少年未经治疗的龋齿和血清维生素D水平:NHANES 2013-2014。

Brazilian dental journal Pub Date : 2023-01-01 DOI: 10.1590/0103-6440202305123

Lilian Rigo, Augusto Bacelo Bidinotto, Fernando Neves Hugo, Matheus Neves, Juliana Balbinot Hilgert

{"title":"Untreated caries and serum vitamin D levels in children and youth of the United States: NHANES 2013-2014.","authors":"Lilian Rigo, Augusto Bacelo Bidinotto, Fernando Neves Hugo, Matheus Neves, Juliana Balbinot Hilgert","doi":"10.1590/0103-6440202305123","DOIUrl":"https://doi.org/10.1590/0103-6440202305123","url":null,"abstract":"This study aimed to investigate the association between serum vitamin D levels and untreated caries and determining factors in children and youth.Methodology: This cross-sectional study used data from the National Health and Nutrition Examination Survey (2013-2014). In total, 3,072 participants with ages ranging from 1 to 19 years were included in our sample. The main dependent variable, untreated caries, was defined as having at least one untreated carious surface in any tooth. Serum concentration of 25-hydroxyvitamin D [25(OH)D] was categorized into four groups: ≥75 nmol/ml, 50-74.9 nmol/ml, 25-49.9 nmol/ml, and <25 nmol/ml. Data were analyzed using a binary logistic regression.Results: For children aged 1-5 years, age (OR = 1.68, 95% confidence intervals (95% CI) 1.38-2.04) and low levels of vitamin D (25-49.9 nmol/ml, and <25 nmol/ml: OR = 2.55, 95% CI 1.06-6.13) were associated with untreated caries. For children aged 6-11 years, low levels of vitamin D (50-74.9 nmol/ml: OR=1.45, 95% CI 1.16-1.82) remained associated with untreated caries. No associations were found in those between 12 and 19 years of age.Conclusion: Our findings show an association between low levels of 25(OH)D and untreated caries in children between 1 and 11 years of age, suggesting that this nutrient might interfere in the caries process.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"34 1","pages":"99-106"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10027104/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9149338","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

Mechanism of action of Bioactive Endodontic Materials. 生物活性牙髓材料的作用机制。

Brazilian dental journal Pub Date : 2023-01-01 DOI: 10.1590/0103-6440202305278

Carlos Estrela, Luciano Tavares Angelo Cintra, Marco Antônio Hungaro Duarte, Giampiero Rossi-Fedele, Giulio Gavini, Manoel Damião Sousa-Neto

{"title":"Mechanism of action of Bioactive Endodontic Materials.","authors":"Carlos Estrela, Luciano Tavares Angelo Cintra, Marco Antônio Hungaro Duarte, Giampiero Rossi-Fedele, Giulio Gavini, Manoel Damião Sousa-Neto","doi":"10.1590/0103-6440202305278","DOIUrl":"10.1590/0103-6440202305278","url":null,"abstract":"A continuous search for bioactive materials capable of supporting the replacement of damaged pulp tissue, with effective sealing potential and biocompatibility, has represented the attention of studies over the last decades. This study involves a narrative review of the literature developed by searching representative research in PUBMED/MEDLINE and searches in textbooks associated with the mechanism of action of bioactive materials (calcium hydroxide, mineral trioxide aggregate (MTA), and calcium silicate cements). The reflective analysis of the particularities of the chemical elements of these materials, considering the tissue and antibacterial mechanism of action, allows a better understanding of the characteristics and similarities in their tissue responses. Calcium hydroxide paste remains the antibacterial substance of choice as intracanal dressing for the treatment of root canal system infections. Calcium silicate cements, including MTA, show a favorable biological response with the stimulation of mineralized tissue deposition in sealed areas when in contact with connective tissue. This is due to the similarity between the chemical elements, especially ionic dissociation, the potential stimulation of enzymes in tissues, and the contribution towards an alkaline environment due to the pH of these materials. The behavior of bioactive materials, especially MTA and the new calcium silicate cements in the biological sealing activity, has been shown to be effective. Contemporary endodontics has access to bioactive materials with similar properties, which can stimulate a biological seal in lateral and furcation root perforations, root-end fillings and root fillings, pulp capping, pulpotomy, apexification, and regenerative endodontic procedures, in addition to other clinical conditions.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"34 1","pages":"1-11"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10027099/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9153294","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

Impact of radiotherapy on the morphological and compositional structure of intra-radicular dentin. 放射治疗对根内牙本质形态和组成结构的影响。

Brazilian dental journal Pub Date : 2023-01-01 DOI: 10.1590/0103-6440202305101

Georgia Ribeiro Martini, Eduardo A Bortoluzzi, Mariana C Minamisako, Natalia C Trentin Bordignon, Paulo M Rodrigues, Rogério Gondak

{"title":"Impact of radiotherapy on the morphological and compositional structure of intra-radicular dentin.","authors":"Georgia Ribeiro Martini, Eduardo A Bortoluzzi, Mariana C Minamisako, Natalia C Trentin Bordignon, Paulo M Rodrigues, Rogério Gondak","doi":"10.1590/0103-6440202305101","DOIUrl":"https://doi.org/10.1590/0103-6440202305101","url":null,"abstract":"Considering the side effects in the oral cavity and dental structures of radiotherapy (RDT) for head and neck cancer, this study aimed to evaluate the effects of RDT on the root dentin concerning the obliteration of dentinal tubules, the inorganic composition of intra-radicular dentin, and the integrity of collagen fibers. Thirty human canines were selected from a biobank and randomly divided into two groups (n=15). The samples were sectioned buccolingually, and a hemisection was used for structural analysis by scanning electron microscopy (SEM) and energy-dispersive X-ray spectrometer (EDS). Low-vacuum SEM images were obtained at 2000-x magnification to observe the obliteration of the dentinal tubules. Moreover, compositional evaluation was performed using EDS. After RDT, the SEM and EDS analyses were repeated using the same methodology. RDT was applied fractionally at 2 Gy per day, 5 days per week, for 7 weeks, resulting in a total dose of 70 Gy. The collagen integrity of the irradiated and non-irradiated samples was analyzed using Masson's trichrome and picrosirius red staining polarization microscopy. Samples subjected to RDT exhibited dentinal tubule obliteration (p < 0.001); low integrity of type I and III collagen fibers (p < 0.05); compositional reduction of calcium (p = 0.012), phosphorus (p = 0.001), and magnesium (p < 0.001); an increased Ca/P ratio (p < 0.001). RDT affects the structure of dentinal tubules, the inorganic composition of intra-radicular dentin, and the collagen fiber integrity in the root dentin, which may interfere with the effectiveness and durability of dental procedures.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"34 1","pages":"45-51"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10027097/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9524348","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

Whitening Effect of Different Toothpastes on Bovine Dental Enamel: an in situ study. 不同牙膏对牛牙釉质增白效果的原位研究。

Brazilian dental journal Pub Date : 2023-01-01 DOI: 10.1590/0103-6440202304940

Anselmo Agostinho Simionato, Rocío Geng Vivanco, Rafaella Tonani-Torrieri, Carolina Noronha Ferraz de Arruda, Fernanda Carvalho Panzeri Pires-de-Souza

{"title":"Whitening Effect of Different Toothpastes on Bovine Dental Enamel: an in situ study.","authors":"Anselmo Agostinho Simionato, Rocío Geng Vivanco, Rafaella Tonani-Torrieri, Carolina Noronha Ferraz de Arruda, Fernanda Carvalho Panzeri Pires-de-Souza","doi":"10.1590/0103-6440202304940","DOIUrl":"https://doi.org/10.1590/0103-6440202304940","url":null,"abstract":"The aim of this in situ study was to evaluate color change, surface roughness, gloss, and microhardness in tooth enamel submitted to whitening and remineralizing toothpastes. Fifteen healthy adults (REBEC - RBR-7p87yr) (with unstimulated salivary flow ≥ 1.5 ml for 5 minutes, pH=7) wore two intraoral devices containing four bovine dental fragments (6 x 6 x 2 mm). Participants were randomly assigned and instructed to toothbrush the devices with the tested toothpastes (30 days): CT: conventional; WT: whitening; WTP: whitening with peroxide, and RT: remineralizing toothpaste. A washout period of 7 days was established. Readouts of color, gloss, surface roughness, and microhardness were performed before and after brushing. The results demonstrated no color, gloss, and microhardness differences (p>0.5). The samples brushed with WTP (0.2(0.7) showed higher surface roughness (p=0.0493) than those with WT (-0.5(1.0). The toothpastes did not alter the properties of the dental enamel, except for the roughness. Toothpaste with an abrasive system based on sodium bicarbonate and silica, and that contains sodium carbonate peroxide increased the surface roughness of the enamel.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"34 1","pages":"61-70"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10027098/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9524349","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

Influence of temperature on the torsional properties of two thermally treated NiTi rotary instruments. 温度对两种热处理镍钛旋转仪表扭转性能的影响。

Brazilian dental journal Pub Date : 2023-01-01 DOI: 10.1590/0103-6440202305094

Roberto Barreto Osaki, Clovis Monteiro Bramante, Rodrigo Ricci Vivan, Murilo Priori Alcalde, Pedro Henrique Souza Calefi, Marco Antonio Hungaro Duarte

{"title":"Influence of temperature on the torsional properties of two thermally treated NiTi rotary instruments.","authors":"Roberto Barreto Osaki, Clovis Monteiro Bramante, Rodrigo Ricci Vivan, Murilo Priori Alcalde, Pedro Henrique Souza Calefi, Marco Antonio Hungaro Duarte","doi":"10.1590/0103-6440202305094","DOIUrl":"https://doi.org/10.1590/0103-6440202305094","url":null,"abstract":"This study aimed to evaluate the influence of temperature on torsional strength and angular deflection of two experimental NiTi rotary instruments manufactured from Blue and Gold thermal treatments and with identical cross-sections. A total of 40 experimental NiTi instruments 25.06 and with a triangular cross-section and manufactured from Blue and Gold thermal treatments were used (n=20). The torsional test was performed in the 3 mm from the tip of the instrument according to ISO 3630-1. The torsional test evaluated the torsional strength and angular deflection to failure at room temperature (21°C ± 1° C) and body temperature (36°C ±1°C). The fractured surface of each fragment was observed by using scanning electron microscopy (SEM). Data were analyzed using an unpaired t test for inter and intra-group comparison and the level of significance was set at 5%. The results showed that the body temperature did not affect the torsional strength and angular deflection of the instruments when compared with room temperature (P>0.05). However, at body temperature, the Blue NiTi instruments presented significantly lower angular deflection in comparison with Gold NiTi instruments (P<0.05). There was no significant difference regarding the torsional strength of the instruments at body temperature (P>0.05). The temperature did not affect the torsional strength of the instruments manufactured from Blue and Gold technology. However, the Blue NiTi instruments presented significantly lower angular deflection than Gold instruments at 36°C temperature.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"34 1","pages":"12-18"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10027105/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9149337","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

Clinical identification and endodontic management of furcation canals: a case series. 毛细管的临床识别和牙髓治疗：病例系列。

Brazilian dental journal Pub Date : 2023-01-01 DOI: 10.1590/0103-6440202304817

Pierre Kuoch, Martin Biosse Duplan, Fleur Berès, Éric Bonte, Cauris Couvrechel

引用次数: 0

Could the radiographic image quality be affected by the excessive use of the photostimulable phosphor plate? 过度使用可光刺激磷光片会否影响放射影像质素?

Brazilian dental journal Pub Date : 2023-01-01 DOI: 10.1590/0103-6440202305225

Débora Costa Ruiz, Amanda Farias Gomes, Rocharles Cavalcante Fontenele, Francisco Haiter Neto, Deborah Queiroz Freitas, Francisco Carlos Groppo

{"title":"Could the radiographic image quality be affected by the excessive use of the photostimulable phosphor plate?","authors":"Débora Costa Ruiz, Amanda Farias Gomes, Rocharles Cavalcante Fontenele, Francisco Haiter Neto, Deborah Queiroz Freitas, Francisco Carlos Groppo","doi":"10.1590/0103-6440202305225","DOIUrl":"https://doi.org/10.1590/0103-6440202305225","url":null,"abstract":"The study aimed to assess the influence of excessive use of a photostimulable phosphor plate (PSP) on the density, image noise, and contrast of radiographs. For that, radiographs of an acrylic block were acquired with a PSP of the Express intraoral system to assess the density and image noise. Initially, five images were obtained and exported (first group). After 400 exposures to X-rays and scannings of PSP, other five images were obtained and exported (second group). The same procedure was done after 800 (third group), 1200 (fourth group), 1600 (fifth group), and 2000 acquisitions (sixth group), resulting in 30 images to be evaluated. The mean and standard deviation of the gray values were calculated for the images using the ImageJ software. For contrast analysis, radiographs of an aluminum step-wedge were acquired with a new PSP following the same acquisition intervals. The percentage of contrast variation was calculated. Another two unused PSP receptors were employed to evaluate the method's reproducibility. The comparison of the results among the acquisition groups was performed with one-way Analysis of Variance (α=0.05). Intraclass Correlation Coefficient (ICC) assessed the reproducibility of the receptors. Image noise did not differ among the groups (p>0.05). There was a slight increase in density after 400 acquisitions and a slight difference in contrast for all acquisition groups without a pattern of increase or decrease (p<0.05). ICC showed excellent reliability for the methods. Therefore, excessive PSP use slightly affected the radiograph's density and contrast.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"34 1","pages":"39-44"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10027106/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9153290","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

Effect of aging and cementation systems on the bond strength to root dentin after fiber post cementation. 老化和胶结系统对纤维后胶结后与根-牙本质结合强度的影响。

Brazilian dental journal Pub Date : 2023-01-01 DOI: 10.1590/0103-6440202305082

Caio Henrique de Paula Nogueira, Mariana Bena Gelio, João Felipe Besegato, Anna Thereza Peroba Rezende Ramos, Eduardo Fernández, Milton Carlos Kuga, José Roberto Cury Saad

{"title":"Effect of aging and cementation systems on the bond strength to root dentin after fiber post cementation.","authors":"Caio Henrique de Paula Nogueira, Mariana Bena Gelio, João Felipe Besegato, Anna Thereza Peroba Rezende Ramos, Eduardo Fernández, Milton Carlos Kuga, José Roberto Cury Saad","doi":"10.1590/0103-6440202305082","DOIUrl":"10.1590/0103-6440202305082","url":null,"abstract":"This study evaluated the effect of aging and cementation of fiber posts using glass ionomer and resin cements on push-out bond strength, failure mode, and resin tag formation. One hundred and twenty bovine incisors were used. After post-space preparation, the specimens were randomly allocated into 12 groups (n = 10) according to the cementation system used: GC - GC Gold Label Luting & Lining); RL - RelyX Luting 2; MC - MaxCem Elite; RU - RelyX U200 and the aging periods (24 hours, 6 months, and 12 months). Slices from the cervical, middle, and apical thirds were obtained and analyzed by push-out bond strength test and confocal laser scanning microscopy. One-way ANOVA and Tukey's post-hoc test was used at a significance level of 5%. For the push-out bond strength test, no differences among GC, RU, and MC in the cervical and middle thirds were observed, regardless of the period of storage (P > 0.05). In the apical third, GC and RU showed similar bond strength but higher than other groups (P > 0.05). After 12 months, GC showed the highest bond strength (P < 0.05). Bond strength to post-space dentin decreased over time, regardless of the cementation system used. Cohesive failure was the most frequent, regardless of the period of storage, cementation system, and post-space third. Tag formation was similar among all groups. After 12 months, GC showed the highest bond strength values.","PeriodicalId":9211,"journal":{"name":"Brazilian dental journal","volume":"34 1","pages":"52-60"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10027095/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9524350","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