Brazilian dental journal最新文献_第9页

Comparative study of physical-chemical properties of bioactive glass ionomer cement. 生物活性玻璃离聚物水泥的物理化学特性比较研究。

Brazilian dental journal Pub Date : 2024-03-22 eCollection Date: 2024-01-01 DOI: 10.1590/0103-6440202405728

Nádia Buzignani Pires Ramos, Klissia Romero Felizardo, Sandrine Bittencourt Berger, Ricardo Danil Guiraldo, Murilo Baena Lopes

{"title":"Comparative study of physical-chemical properties of bioactive glass ionomer cement.","authors":"Nádia Buzignani Pires Ramos, Klissia Romero Felizardo, Sandrine Bittencourt Berger, Ricardo Danil Guiraldo, Murilo Baena Lopes","doi":"10.1590/0103-6440202405728","DOIUrl":"10.1590/0103-6440202405728","url":null,"abstract":"This study analyzed the physical-chemical properties of bioactive ionomer materials. Cention N bioactive materials were evaluated chemically activated (CN) and light-cured (CN-LC), Equia Forte Fill (EQUI); conventional resin composite Filtek Z350 XT (Z350); resin glass ionomer cement Riva light Cure (RIVA) and flowable resin composite Filtek Bulk Fill Flow (BULK-F) were evaluated. Sixty specimens (n=10) were prepared for sorption (SR), solubility (SL), flexural strength (FS), shrinkage stress (SS), conversion degree (CD), microhardness (MI), and surface roughness (SR) tests. Non-cured and light-cured materials were assessed on FTIR. 30 human molar teeth were used in the bond strength test (BS). Data were subjected to ANOVA and post-hoc Tukey's test (5% of significance). EQUI showed more sorption in SR and no statistical difference from RIVA and CN-LC. CN group showed more solubility and EQUI presented less (p<0.05). BULK-F showed higher FS (MPa), without differences from CN and Z350, whereas EQUI presented the lowest FS not differing from RIVA. BULK-F and CN-LC showed more shrinkage stress differing from EQUI. CN-LC and CN showed higher CD differing from the other which showed no differences (p>0.05) between them. EQUI showed the highest hardness (p<0.05) in MI. There were no differences (p>0.05) in SR (µm). Z350 and BULK-F presented higher BS, whereas CN-LC showed the lowest, although not differing from EQUI and RIVA. Equia Forte's solubility and microhardness make it a good alternative as a restorative material. Cention N degree of conversion and flexural strength making it an esthetic option to amalgam.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"35 ","pages":"e245728"},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10976313/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140308476","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

Surface treatments of the zirconia-reinforced lithium disilicate ceramic in the adhesion to the resin cement. 氧化锆增强二硅酸锂陶瓷的表面处理对树脂胶结物粘附性的影响。

Brazilian dental journal Pub Date : 2024-03-22 eCollection Date: 2024-01-01 DOI: 10.1590/0103-6440202405674

Mirko A R Aguilera, Américo C Bortolazzo, Lourenço Correr-Sobrinho, Rafael L X Consani

{"title":"Surface treatments of the zirconia-reinforced lithium disilicate ceramic in the adhesion to the resin cement.","authors":"Mirko A R Aguilera, Américo C Bortolazzo, Lourenço Correr-Sobrinho, Rafael L X Consani","doi":"10.1590/0103-6440202405674","DOIUrl":"10.1590/0103-6440202405674","url":null,"abstract":"This study verified the effect of surface treatments of the zirconia-reinforced lithium disilicate ceramic bonded to resin cement. Ceramic blocks were divided according to treatments (n=10): FA+SRX (Fluoric acid + silane RX), FA+MDP (Fluoric acid + MDP), FA+SCF+MDP (Fluoric acid + silane CF + MDP), FA+MEP (Fluoric acid + MEP), and MEP (Self-etch primer). Resin cement cylinders were made in the ceramic blocks, photoactivated with 1,200 mW/cm² for 40s, stored in water at 37°C for 24h, and evaluated by the microshear strength test, optical failure descriptive analysis (%), surface characterization (SEM) and contact angle (Goniometer). Other samples were submitted to 10,000 thermocycles between 5°C and 55°C. Bond strength data were submitted to two-way ANOVA and Tukey's test. Contact angle to one-way ANOVA and Games-Howell's test (5%). At 24h, MEP showed higher bond strength, and FA+SRX the lower. FA+MDP and FA+SCF+MDP showed similar values and FA+MEP was intermediate. After thermocycling, FA+SCF+MDP, FA+MEP, and MEP showed higher values, and FA+SRX the lower while FA+MDP was intermediate. When the periods were compared, FA+MDP, FA+SCF+MDP, FA+MEP, and MEP showed higher values for 24h while FA+SRX was similar. SEM showed retentive surface and crystal exposure when treated with FA+SCF+MDP. The less retentive surface was obtained with MEP, and the other treatments promoted intermediate irregularities. In conclusion, surface treatment and thermocycling promoted different values of adhesive strength and contact angle in a zirconia-reinforced lithium silicate ceramic. Failures were predominantly adhesive, and the ceramic surface was characterized by different levels of roughness and selective exposure of crystals.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"35 ","pages":"e245674"},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10976312/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140308480","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 EGCG-based paste as intracanal dressing, in MMPs 2 and 9 expression in dog's periapical lesions. 将基于 EGCG 的糊剂作为根管内敷料对狗根尖周病变中 MMPs 2 和 9 表达的影响。

Brazilian dental journal Pub Date : 2024-03-22 eCollection Date: 2024-01-01 DOI: 10.1590/0103-6440202405509

Andiara De Rossi, Tadeu Pradela, Fernanda Souza Liévana, Raquel Assed Bezerra Segato, Jorge Esquiche León, Léa Assed Bezerra da Silva, Paulo Nelson-Filho

{"title":"Effect of EGCG-based paste as intracanal dressing, in MMPs 2 and 9 expression in dog's periapical lesions.","authors":"Andiara De Rossi, Tadeu Pradela, Fernanda Souza Liévana, Raquel Assed Bezerra Segato, Jorge Esquiche León, Léa Assed Bezerra da Silva, Paulo Nelson-Filho","doi":"10.1590/0103-6440202405509","DOIUrl":"10.1590/0103-6440202405509","url":null,"abstract":"High expression of MMP-2 and MMP-9 in periapical lesions plays an important role in the degradation of the extracellular matrix. This study aimed to investigate the effect of epigallocatechin-3-gallate (EGCG)-based endodontic paste as an intracanal dressing on the expression of MMP-2 and MMP-9 in periapical lesions. Periapical lesions were experimentally induced in 35 mature beagle dog premolars randomly divided into healthy teeth, untreated periapical lesions, periapical lesions treated in a single session (control groups), and periapical lesions treated in two sessions with EGCG or calcium hydroxide-based pastes (experimental groups). After 120 days, specimens were obtained for histopathologic and immunofluorescence analyses to assess the expression of MMP-2 and MMP-9. The statistical analysis was performed using a p-value of 0.05. Endodontic treatment in two sessions using medication with EGCG and calcium hydroxide-based pastes provided similar repair of the apical and periapical tissues and neoformation of periodontal ligament fibers, cementum, and alveolar bone (p>0.05). The experimental groups treated in two sessions with both medications presented expression of MMP-2 and MMP-9 similar to that in healthy teeth (p>0.05), and significantly lower than teeth treated in a single session or untreated periapical lesions (p <0.001). Expression of MMP-2 and MMP-9 was observed in the cytoplasm of fibroblasts, osteoblasts, cementoblasts, cementocytes, and vascular endothelium. The use of EGCG-based endodontic paste reduced the expression of MMP-2 and MMP-9 and allowed repair of periapical lesions, similar to calcium hydroxide-based paste, and superior to treatment performed in a single session.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"35 ","pages":"e245509"},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10976310/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140308462","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 genetic polymorphisms on oral health-related quality of life after root canal treatment. 基因多态性对根管治疗后口腔健康相关生活质量的影响。

Brazilian dental journal Pub Date : 2024-03-22 eCollection Date: 2024-01-01 DOI: 10.1590/0103-6440202405678

Graciane E R Queiroz, Thuanny Castilho, Ludmila Silva Guimarães, Vania Gomes Moraes, Erlange Andrade Borges da Silva, Erika Calvano Küchler, Alice Corrêa Silva-Sousa, Manoel Damião Sousa-Neto, Lívia Azeredo Alves Antunes, Leonardo Santos Antunes

{"title":"Influence of genetic polymorphisms on oral health-related quality of life after root canal treatment.","authors":"Graciane E R Queiroz, Thuanny Castilho, Ludmila Silva Guimarães, Vania Gomes Moraes, Erlange Andrade Borges da Silva, Erika Calvano Küchler, Alice Corrêa Silva-Sousa, Manoel Damião Sousa-Neto, Lívia Azeredo Alves Antunes, Leonardo Santos Antunes","doi":"10.1590/0103-6440202405678","DOIUrl":"10.1590/0103-6440202405678","url":null,"abstract":"To evaluate the impact of genetic polymorphisms in interleukins (IL1A rs17561, rs1304037; IL10 rs1800871; IL1RN rs9005), nitric oxide (NOS2 rs2779249, rs2897518) and suppressor of cytokine signaling (SOCS1 rs243327, rs33977706) on oral health-related quality of life (OHRQoL) of patients under-going root canal treatment (RCT).Methods: The sample consisted of 108 participants, presenting single-rooted teeth with asymptomatic periapical periodontitis. The impact of the OHRQoL was recorded using the Oral Health Impact Profile (OHIP-14) before, seven, and 30 days after RCT. Saliva samples were collected as a source of genomic DNA. Genetic polymorphisms were genotyped by Real-Time PCR using the Taqman method. Univariate and Multivariate analyses were used (p<0.05).Results: A significant difference was observed for the polymorphism rs2297518 in the NOS2 gene in functional limitation in the codominant (p=0.037) and recessive (p=0.001) models; in the physical pain (p<0.001 in both models); in psychological discomfort (p<0.001 in both models); in physical disability (p<0.001 in both models) and in psychological disability (p<0.001 in both models). Polymorphisms in the SOCS1 gene, in the recessive model, rs33977706 (p=0.045) and rs243327 (p=0.019), influenced the OHRQoL in the psychological discomfort domain.Conclusions: Polymorphisms in NOS2 and SOCS1 genes influenced the OHRQoL of patients undergoing RCT.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"35 ","pages":"e245678"},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10976299/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140308466","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

Natural canal deviation and dentin thickness of mesial root canals of mandibular first molars assessed by microcomputed tomography. 通过微型计算机断层扫描评估下颌第一磨牙中侧根管的自然偏差和牙本质厚度。

Brazilian dental journal Pub Date : 2024-03-22 eCollection Date: 2024-01-01 DOI: 10.1590/0103-6440202405648

Carolina Alonso Amorim, Marília F Marceliano-Alves, Isabelle Louise Gomes, José C Provenzano, Flávio R F Alves

{"title":"Natural canal deviation and dentin thickness of mesial root canals of mandibular first molars assessed by microcomputed tomography.","authors":"Carolina Alonso Amorim, Marília F Marceliano-Alves, Isabelle Louise Gomes, José C Provenzano, Flávio R F Alves","doi":"10.1590/0103-6440202405648","DOIUrl":"10.1590/0103-6440202405648","url":null,"abstract":"The aim of this study was to assess the centralization and dentin thickness of mesial root canals of the first mandibular molars by microcomputed tomography (micro-CT). Material and methods: Ninety-nine mandibular molars of Vertucci's type IV canals were scanned by micro-CT. The mesiodistal deviation and centroid were assessed, in both mesiobuccal (MB) and mesiolingual (ML) canals, for the apical 4mm and the full canal length. Results: The dentin thickness was similar for both MB and ML canals. The narrowest thickness was in the distal wall of an MB canal (0.07mm), while the widest was found in the mesial wall of an MB canal (2.46mm). In centroid analysis, both the MB and ML canals exhibited deviations when compared to the root centroid, along the full canal length and the apical 4mm. For the MB canal, the mean deviation was 0.83mm (0.02 mm-2.30 mm) for the full canal and 0.18mm (0.01 mm-1.01 mm) for apical 4mm. Similarly, for the ML canal, the mean deviation measured 0.83 mm (0.05mm-3.99mm) for the full canal and 0.21 mm (0.01mm-1.01mm) for the apical 4 mm. Overall, deviations were observed towards the mesial of the roots, with 69% for MB and 57% for ML canals for the full canal, and 51% for MB canals within the 4 mm. The exception was the ML canal, which exhibited a higher deviation towards distal in the apical 4mm, accounting for 52% of cases. The dentin thickness was consistent between the mesial canals of mandibular molars. However, there is no centrality of mesial canals in their roots, with frequent deviation to mesial.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"35 ","pages":"e245648"},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10976306/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140308467","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

Color matching and color recovery in large composite restorations using single-shade or universal composites. 使用单一色调或通用复合材料的大型复合材料修复体的颜色匹配和颜色恢复。

Brazilian dental journal Pub Date : 2024-03-22 eCollection Date: 2024-01-01 DOI: 10.1590/0103-6440202405665

Ellen Dionélia Alencar Rodrigues Rosa, Larissa Fernandes Vieira Da Silva, Paula Fernanda Damasceno Silva, André Luís Faria E Silva

{"title":"Color matching and color recovery in large composite restorations using single-shade or universal composites.","authors":"Ellen Dionélia Alencar Rodrigues Rosa, Larissa Fernandes Vieira Da Silva, Paula Fernanda Damasceno Silva, André Luís Faria E Silva","doi":"10.1590/0103-6440202405665","DOIUrl":"10.1590/0103-6440202405665","url":null,"abstract":"This study assessed the color-matching ability and color recovery of unprepared teeth when using single-shade composites and a universal composite in large restorations. Buccal and palatine surface colors of molars were measured with a spectrophotometer (CIELAB) before preparing round cavities (6 mm in diameter, 2 mm in depth). The cavities were randomly filled with a single-shade composite (Omnichroma, Diamond One, or Vittra APS Unique) or a universal composite (Filtek Universal). Color measurements of the restored cavities were taken, and overall color differences (ΔEab and ΔE00) and differences in the whitening index for dentistry (ΔWID) from baseline were calculated. Additionally, visual assessments of a color match to the surrounding enamel were performed by forty evaluators (laypersons and undergraduate students of dentistry) in a viewing booth under illuminant D65, with rating scores from 0 (no color mismatch) to 4 (not acceptable). Data were analyzed using RM or one-way ANOVA (α = 0.05). Results showed that the restorations generally exhibited whiter colors (WID ranged from 27.9 to 41.3) than the unprepared teeth (WID ranged from 15.9 to 19.3). The composite Filtek Universal demonstrated the lowest color discrepancy (ΔWID = 8.6; ΔE00 = 10.8; and ΔE00 = 6.2), and no significant differences were observed among the evaluated single-shade composites. Furthermore, all composites showed similar and adequate color matches to the surrounding enamel. However, it is important to note that despite their ability to match the surrounding enamel reasonably, none of the composites evaluated in large restorations fully recovered the color observed in unprepared teeth.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"35 ","pages":"e245665"},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10976307/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140308475","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

Root canal curvature influences uncontrolled removal of dentin and cleaning efficacy after ultrasonic activation. 根管弯曲度会影响牙本质的不可控清除以及超声波激活后的清洁效果。

Brazilian dental journal Pub Date : 2024-03-22 eCollection Date: 2024-01-01 DOI: 10.1590/0103-6440202405611

Hermano Camelo Paiva, Elaine Faga Iglecias, Laila Gonzales Freire, George Táccio de Miranda Candeiro, Basílio Rodrigues Vieira, Frederico Barbosa de Sousa, Giulio Gavini

{"title":"Root canal curvature influences uncontrolled removal of dentin and cleaning efficacy after ultrasonic activation.","authors":"Hermano Camelo Paiva, Elaine Faga Iglecias, Laila Gonzales Freire, George Táccio de Miranda Candeiro, Basílio Rodrigues Vieira, Frederico Barbosa de Sousa, Giulio Gavini","doi":"10.1590/0103-6440202405611","DOIUrl":"10.1590/0103-6440202405611","url":null,"abstract":"This study evaluated the correlation between root canal curvature and the effects of ultrasonic irrigation in the following parameters: volume of uncontrolled dentin removal (UDRVol), maximum depth of dentin defects, removal of accumulated hard tissue debris (AHTD), and canal transportation in prepared curved root canals. Twenty-four human permanent mandibular molars were divided into two groups according to root canal curvature: moderate curvature (MC: mean 25°); and severe curvature (SC: mean 48°). The specimens were scanned using an X-ray microcomputed scanner (Skyscan 1172) before and after cleaning and shaping and after the final irrigation protocol with ultrasonic irrigation. There was a moderate correlation between the degree of root canal curvature and the volume of remaining AHTD (p<0.05) and between the degree of root canal curvature and maximum depth of defects due to uncontrolled removal of dentin (p<0.05). The teeth in the SC group had a greater maximum depth of defects on the dentin wall in the apical third than the teeth in the MC group (p <0.05). Both groups had a significant reduction of AHTD in all canal thirds, but the amount of remaining AHTD in the middle and apical thirds and the whole canal was significantly greater in the SC than in the MC group (p <0.05). Canal transportation was not influenced by the canal curvature in all thirds (p >0.05). This study concluded that root canal curvature affects significantly the uncontrolled removal of dentin and remaining AHTD volume after the final irrigation protocol with ultrasonic irrigation.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"35 ","pages":"e245611"},"PeriodicalIF":0.0,"publicationDate":"2024-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10976300/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140308479","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

Physical-chemical influences and cell behavior of natural compounds on titanium dental surfaces. 钛牙表面天然化合物的物理化学影响和细胞行为。

Brazilian dental journal Pub Date : 2023-12-22 eCollection Date: 2023-01-01 DOI: 10.1590/0103-6440202305582

Patricia Milagros Maquera-Huacho, Gabriel Garcia de Carvalho, Miguel Jafelicci Júnior, Elcio Marcantonio Junior, Denise Madalena Palomari Spolidorio

{"title":"Physical-chemical influences and cell behavior of natural compounds on titanium dental surfaces.","authors":"Patricia Milagros Maquera-Huacho, Gabriel Garcia de Carvalho, Miguel Jafelicci Júnior, Elcio Marcantonio Junior, Denise Madalena Palomari Spolidorio","doi":"10.1590/0103-6440202305582","DOIUrl":"10.1590/0103-6440202305582","url":null,"abstract":"The present study evaluated the influence of carvacrol, terpinene-4-ol, and chlorhexidine on the physical-chemical properties of titanium surfaces, cell viability, proliferation, adhesion, and spreading of fibroblasts and osteoblasts in vitro. Titanium surfaces (Ti) were treated with Carvacrol (Cvc), Terpinen-4-ol (T4ol), Chlorhexidine (CHX), DMSO, and ultrapure water (Control group). Physical-chemical modifications were evaluated by surface wettability, the surface free energy (SFE) calculated from the contact angle values using the Owens-Wendt-Rabel-Kaeble (OWRK) equation, scanning electron microscopy (SEM) and energy dispersive spectrometry probe (EDS) system. Cells were seeded onto Ti-treated surfaces and incubated for 24 h and 72 h, then evaluated by Alamar blue assay and fluorescence microscopy. Surfaces treated with Cvc and T4ol showed the presence of Na, O, and Cl. All surfaces showed hydrophilic characteristics and SFE values between 5.5 mN/m and 3.4 mN/m. On the other hand, EDS peaks demonstrated the presence of O and Cl after CHX treatment. A reduction of cell viability and adhesion was noted on titanium surfaces treated with CHX after 24 and 72h. In conclusion, the results indicate that the decontamination with Cvc and T4ol on Ti surfaces does not alter the surface proprieties and allows an adequate interaction with cells involved in the re-osseointegration process such as fibroblasts and osteoblasts.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"34 5","pages":"53-62"},"PeriodicalIF":0.0,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10759949/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138833948","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

Effects of the application of sodium ascorbate after in-office bleaching on the penetration of hydrogen peroxide, color change, and microtensile bond strength. 诊室漂白后使用抗坏血酸钠对过氧化氢渗透、颜色变化和微拉伸粘接强度的影响。

Brazilian dental journal Pub Date : 2023-12-22 eCollection Date: 2023-01-01 DOI: 10.1590/0103-6440202305214

Alexandra Mena-Serrano, María G Granda-Albuja, Jenny Naranjo, Eliana Aldás Fierro, Michael Willian Favoreto, Alessandro D Loguercio, Alessandra Reis

{"title":"Effects of the application of sodium ascorbate after in-office bleaching on the penetration of hydrogen peroxide, color change, and microtensile bond strength.","authors":"Alexandra Mena-Serrano, María G Granda-Albuja, Jenny Naranjo, Eliana Aldás Fierro, Michael Willian Favoreto, Alessandro D Loguercio, Alessandra Reis","doi":"10.1590/0103-6440202305214","DOIUrl":"10.1590/0103-6440202305214","url":null,"abstract":"This study aimed to evaluate the effects of the application of 10% sodium ascorbate (SA) after in-office bleaching on the penetration of hydrogen peroxide (HP) into the pulp chamber, color change, and microtensile bond strength (µTBS) to the resin-enamel interface. Thirty premolars and thirty molars were randomly divided into three groups (n = 20 each). One group was exposed to deionized water (negative control). The other two groups were bleached with 35% HP in a single session for 3x15 minutes for each application. However, in only one of them, SA was applied for 10 minutes after bleaching. After, the concentration (µg/mL) of HP in each pulp chamber was evaluated by UV-Vis spectrophotometry. Color changes (ΔEab, ΔE00, and ΔWID) were evaluated with a digital spectrophotometer before and in the first week after bleaching. After treatment, molars were restored and sectioned to obtain resin-enamel interface sticks for µTBS at a crosshead speed of 1 mm/min until failure. The HP concentration and µTBS data were analyzed using one-way ANOVA and Tukey tests, and color changes were analyzed by t-tests (α = 0.05). SA application significantly improved the µTBS values and reduced the HP concentrations within the pulp chambers (p < 0.0001). The application of SA significantly interfered with the color changes after bleaching when compared to the control group (p < 0.05). Application of 10% SA after in-office bleaching successfully reduced the penetration of HP into the pulp chamber; however, it decreased color change.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"34 5","pages":"87-94"},"PeriodicalIF":0.0,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10759951/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138833943","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

Oral cancer over six decades: a multivariable analysis of a clinicopathologic retrospective study. 六十年来的口腔癌：一项临床病理学回顾性研究的多变量分析。

Brazilian dental journal Pub Date : 2023-12-22 eCollection Date: 2023-01-01 DOI: 10.1590/0103-6440202305264

Natália Batista Daroit, Lucas Nunes Martins, Alan Ballardin Garcia, Alex Nogueira Haas, Fábio Luiz Dal Moro Maito, Pantelis Varvaki Rados

{"title":"Oral cancer over six decades: a multivariable analysis of a clinicopathologic retrospective study.","authors":"Natália Batista Daroit, Lucas Nunes Martins, Alan Ballardin Garcia, Alex Nogueira Haas, Fábio Luiz Dal Moro Maito, Pantelis Varvaki Rados","doi":"10.1590/0103-6440202305264","DOIUrl":"10.1590/0103-6440202305264","url":null,"abstract":"Studies have reported changes in the epidemiological profile of patients with oral cancer in recent decades, especially regarding gender and age. This study aimed to evaluate a historical series of oral malignant lesions prevalence over six decades and define characteristics associated with the occurrence, mainly, of oral squamous cell carcinoma (OSCC). A retrospective review of histopathological records from 1953 to 2019 was conducted in three oral pathology laboratories in South Brazil about age, sex, anatomical site, clinical aspect, and histopathological diagnosis. Descriptive and analytical analyses were performed comparing the histopathological diagnoses with other variables. Multivariable logistic regression was applied to determine the associated predictors of OSCC. Of the 53,065 records available in the institutions, 986 were oral malignant tumors (including all malignant neoplasms), representing 1.86% of all diagnoses. The occurrence of OSCC in the 1960's was 80.0%, decreasing over time reaching the lowest percentage of cases in the 1990's (75.8%) and significantly increasing to 88.7% in the 2010s. Females had a lower chance than males of having OSCC independently of the decade (odds ratio=0.30, p<0.001). This was the same for older individuals compared to those younger than 40 years. No interactions between sex, age, and decade were observed. The number of diagnoses of oral malignant lesions increased over time, and the occurrence of OSCC varied. Older individuals and males had higher chances of having OSCC independently of the decade. Therefore, in this study sample, no changes were observed in the epidemiological profile over the years concerning these predictors.","PeriodicalId":101363,"journal":{"name":"Brazilian dental journal","volume":"34 5","pages":"115-124"},"PeriodicalIF":0.0,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10759960/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138833947","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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