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
