Effect of EGCG-based paste as intracanal dressing, in MMPs 2 and 9 expression in dog's periapical lesions
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 expressi...
Source: Braz Dent J - March 27, 2024 Category: Dentistry Authors: Andiara De Rossi Tadeu Pradela Fernanda Souza Li évana Raquel Assed Bezerra Segato Jorge Esquiche Le ón L éa Assed Bezerra da Silva Paulo Nelson-Filho Source Type: research
Effect of ZrO2 paste, surface treatments, and storage on Weibull characteristics and resin bond strength to zirconia
The objective is to evaluate the effect of different surface treatments and storage on the shear strength of ultratranslucent zirconia. 36 blocks of ultra-translucent zirconia were fabricated (7x7x2mm) and sintered. Then, divided into 12 groups according to the "surface treatment" (C -Primer; Al -Sandblasting with Al2O3 + Primer; Si -Silicate + Primer; Gl -Glaze + HF + Primer; Z -Zirlink; Zp -Zirlink + Primer) and "storage" factors (ST-with 150 days/37º and without). After surface treatment, five cylinders (Ø=2mm; h=2.0mm) of resin cement (n=15) were constructed in each ceramic block; at the end, the shear strength test ...
Source: Braz Dent J - March 27, 2024 Category: Dentistry Authors: Anne Heloyse Teixeira Crispim Sarah Emille Gomes da Silva Fernanda Gurgel de Gois Moreira Bianca Cristina Dantas da Silva Amanda Maria de Oliveira Dal Piva Liliana Gressler May Nat ália de Freitas Daudt Rodrigo Oth ávio Assunção Souza Source Type: research
Effect of composite radiopacity and margin location of the restoration on the diagnosis of secondary caries
Braz Dent J. 2024 Mar 22;35:e245583. doi: 10.1590/0103-6440202405583. eCollection 2024.ABSTRACTThis research aimed to evaluate the effect of the radiopacity of a Bulk-Fill composite (X-TraFil, VOCO, Germany) and a Conventional composite (P60, 3M ESPE, USA) and assessment of the margin location in the enamel and dentin on the diagnosis of secondary caries. 76 intact premolars with MOD preparation were divided into two equal groups and filled with the conventional and bulk-fill composite. Four regions were considered to simulate carious lesions (two regions in enamel and two regions in dentin). In each group, half of the reg...
Source: Braz Dent J - March 27, 2024 Category: Dentistry Authors: Farzaneh Mosavat Elham Ahmadi Faezeh Aghajani Saeed Ramezani Source Type: research
Assessing peri-implant bone microarchitecture: conventional vs. osseodensification drilling - ex vivo analysis
In conclusion, OD increases the insertion torque values and promotes beneficial changes regarding bone microarchitecture compared with CT, revealing more peri-implant bone volume with consequent higher primary stability.PMID:38537013 | PMC:PMC10976315 | DOI:10.1590/0103-6440202405599 (Source: Braz Dent J)
Source: Braz Dent J - March 27, 2024 Category: Dentistry Authors: Breno Fortes Bittar Bruno Salles Sotto-Maior Karina Lopes Devito Gustavo Davi Rabelo Alessandra Silveira Machado Ricardo Tadeu Lopes Neuza Maria Souza Picorelli Assis Source Type: research
Root canal curvature influences uncontrolled removal of dentin and cleaning efficacy after ultrasonic activation
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 a...
Source: Braz Dent J - March 27, 2024 Category: Dentistry Authors: Hermano Camelo Paiva Elaine Faga Iglecias Laila Gonzales Freire George T áccio de Miranda Candeiro Bas ílio Rodrigues Vieira Frederico Barbosa de Sousa Giulio Gavini Source Type: research
Effect of Ceramic Thickness on the Bond Strength to Resin-Luting Agents before and after Thermal Cycling
In conclusion, increased ceramic thicknesses reduced the bond strength of tested resin-luting agents to lithium disilicate. No differences were found between resin-luting agents. Thermal cycling reduced the bond strength of both resin-luting agents.PMID:38537015 | PMC:PMC10976309 | DOI:10.1590/0103-6440202405619 (Source: Braz Dent J)
Source: Braz Dent J - March 27, 2024 Category: Dentistry Authors: Carolina Rodrigues de Souza Ana Rosa Costa Lincoln Pires Silva Borges Analia Gabriella Borges Ferraz Rafael Leonardo Xediek Consani Rafael Rocha Pacheco Am érico Bortolazzo Correr Louren ço Correr-Sobrinho Source Type: research
Effect of different thread configurations on hydrophilic implant stability. A split-mouth RCT
Braz Dent J. 2024 Mar 22;35:e245632. doi: 10.1590/0103-6440202405632. eCollection 2024.ABSTRACTThis split-mouth randomized controlled trial aimed to evaluate the primary and secondary stability of hybrid implants with different thread configurations and hydrophilic surfaces. Twenty patients with a partially edentulous maxilla were selected. These patients received two types of implants with the same hydrophilic surface: CTP group: Cylindrical-Tapered implant with perforating threads; CTH: Cylindrical-Tapered implant with hybrid threads configuration (perforating and condensing threads). The primary and secondary stability ...
Source: Braz Dent J - March 27, 2024 Category: Dentistry Authors: Pablo P ádua Barbosa Vithor Xavier Resende de Oliveira Jo ão Vitor Goulart Rog ério Margonar Marcos Boaventura de Moura Guilherme Jos é Pimentel Lopes de Oliveira Source Type: research
Preheated acid associated with silane and electric current in the adhesion of the resin cement to ceramic
In conclusion, the association of preheated hydrofluoric acid/silane applied or not with electric current promoted different microshear strength values, fracture types, and contact angles in the resin cement/ceramic bond.PMID:38537017 | PMC:PMC10976297 | DOI:10.1590/0103-6440202405641 (Source: Braz Dent J)
Source: Braz Dent J - March 27, 2024 Category: Dentistry Authors: Gustavo Belmiro Casaburi Marcos Henrique Ramos da Silva Louren ço Correr-Sobrinho Rafael Leonardo Xediek Consani Source Type: research
Natural canal deviation and dentin thickness of mesial root canals of mandibular first molars assessed by microcomputed tomography
Braz Dent J. 2024 Mar 22;35:e245648. doi: 10.1590/0103-6440202405648. eCollection 2024.ABSTRACTThe 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 ...
Source: Braz Dent J - March 27, 2024 Category: Dentistry Authors: Carolina Alonso Amorim Mar ília F Marceliano-Alves Isabelle Louise Gomes Jos é C Provenzano Fl ávio R F Alves Source Type: research
Color matching and color recovery in large composite restorations using single-shade or universal composites
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 ...
Source: Braz Dent J - March 27, 2024 Category: Dentistry Authors: Ellen Dion élia Alencar Rodrigues Rosa Larissa Fernandes Vieira Da Silva Paula Fernanda Damasceno Silva Andr é Luís Faria E Silva Source Type: research
Surface treatments of the zirconia-reinforced lithium disilicate ceramic in the adhesion to the resin cement
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.PMID:38537020 | PMC:PMC10976312 | DOI:10.1590/0103-6440202405674 (Source: Braz Dent J)
Source: Braz Dent J - March 27, 2024 Category: Dentistry Authors: Mirko A R Aguilera Am érico C Bortolazzo Louren ço Correr-Sobrinho Rafael L X Consani Source Type: research
Impact of Access Cavity Design on Fracture Resistance of Endodontically Treated Maxillary First Premolar: In Vitro
This study was designed to investigate the impact of access cavity designs on fracture resistance of endodontically treated maxillary first premolars. The study sample consisted of 72 intact maxillary first premolars, randomly divided into six groups (n = 12). A standardized proximal cavity preparation was prepared for all samples using standard bur. Groups I: control group with only standard proximal cavity and no endodontic access, group II: Truss access cavity, group III: Separated access to buccal and palatal canals without removal of dentine in between, group IV: Access to buccal and palatal canals with removal of den...
Source: Braz Dent J - March 27, 2024 Category: Dentistry Authors: Anju Daniel Abdul Rahman Saleh Anas Al-Jadaa Waad Kheder Source Type: research
Influence of genetic polymorphisms on oral health-related quality of life after root canal treatment
CONCLUSIONS: Polymorphisms in NOS2 and SOCS1 genes influenced the OHRQoL of patients undergoing RCT.PMID:38537022 | PMC:PMC10976299 | DOI:10.1590/0103-6440202405678 (Source: Braz Dent J)
Source: Braz Dent J - March 27, 2024 Category: Dentistry Authors: Graciane E R Queiroz Thuanny Castilho Ludmila Silva Guimar ães Vania Gomes Moraes Erlange Andrade Borges da Silva Erika Calvano K üchler Alice Corr êa Silva-Sousa Manoel Dami ão Sousa-Neto L ívia Azeredo Alves Antunes Leonardo Santos Antunes Source Type: research
Comparative study of physical-chemical properties of bioactive glass ionomer cement
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 assesse...
Source: Braz Dent J - March 27, 2024 Category: Dentistry Authors: N ádia Buzignani Pires Ramos Klissia Romero Felizardo Sandrine Bittencourt Berger Ricardo Danil Guiraldo Murilo Baena Lopes Source Type: research
Evaluation the stress distribution in root canals by 3D finite element analysis after the materials used in reattaching the vertically root fractured fragments
Braz Dent J. 2024 Mar 22;35:e245833. doi: 10.1590/0103-6440202405833. eCollection 2024.ABSTRACTThe aim was to evaluate the effect of stress distribution on vertical, horizontal, and oblique forces on the tooth model after reattaching the fragments of the maxillary incisor with vertical root fracture (VRF) using different materials, by 3D finite element analysis (FEA). Tooth with a root canal, spongious, and cortical bone models were designed. VRF was modeled on a tooth with 4 different re-attachment models: Group 1: dual-cure cement (DC)+fiber reinforced composite (FRC), Group 2: DC+polyethylene fiber, Group 3: DC+glass fi...
Source: Braz Dent J - March 27, 2024 Category: Dentistry Authors: Senem Yi ğit Özer Salih Dani şman T örem Özer Source Type: research
