Push Out
Mostrando 13-24 de 180 artigos, teses e dissertações.
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13. Effect of Glass Fiber Post Adaptation on Push-Out Bond Strength to Root Dentin
Resumo O objetivo neste estudo foi avaliar o impacto de diferentes diâmetros de pinos de fibra de vidro (PFVs) na resistência de união à dentina. Quarenta dentes humanos unirradiculares foram tratados endodonticamente e utilizados para cimentação de PFVs (White Post DC, FGM) com diferentes diâmetros (n=10): P1 - ø 1,6 mm coronal x 0,85 mm apical; P2
Braz. Dent. J.. Publicado em: 22/07/2019
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14. Effect of ultrasonic and Nd: Yag laser activation on irrigants on the push-out bond strength of fiber post to the root canal
Abstract Objective: This in vitro study aimed to compare the efficacy of irrigants using various irrigation activation methods to the push-out bond strengths of fiber post to root canal luted with self-adhesive resin cement (SARC). Methodology: Forty-eight decoronated human canines were used. The specimens were divided into four groups corresponding with t
J. Appl. Oral Sci.. Publicado em: 30/05/2019
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15. Experimental analysis of bolts employed as shear connectors in circular concrete-filled tube columns
Resumo Este estudo apresenta análises experimentais e teóricas do uso de parafusos como conectores de cisalhamento em pilares mistos de aço em seção tubular circular preenchidos com concreto (PMPCs). Os resultados obtidos experimentalmente são comparados com os resultados das formulações propostas pela norma ABNT NBR 16239:2013. Os ensaios são de ci
Rev. IBRACON Estrut. Mater.. Publicado em: 20/05/2019
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16. Do Irrigation Solutions Influence the Bond Interface Between Glass Fiber Posts and Dentin?
Resumo O objetivo deste trabalho foi avaliar a resistência de união e permeabilidade da interface de pinos de fibra de vidro nos diferentes terços da dentina intrarradicular (cervical, médio e apical) submetidos a diferentes agentes irrigantes. Noventa dentes unirradiculares humanos foram submetidos ao tratamento endodôntico e foram divididos em cinco g
Braz. Dent. J.. Publicado em: 04/04/2019
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17. How to improve root canal filling in teeth subjected to radiation therapy for cancer
Abstract The aim of this study was to evaluate the influence of radiation therapy on root canal sealer push-out bond strength (BS) to dentin and the sealer/dentin interface after different final irrigation solutions (NaOCl, EDTA, and chitosan). Sixty-four maxillary canines were distributed into two groups (n=30): non-irradiated and irradiated with 60 Gy. Can
Braz. oral res.. Publicado em: 29/11/2018
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18. Light curing resin cements containing iodonium salts promote suitable apical bonding of posts to radicular dentin
Abstract The aim of this study was to analyze the efficiency of experimental light-curing resin cements (ERCs) with a ternary photo-initiator system containing diphenyliodonium hexafluorphosphate (DPI) and different amines on retention of glass-fiber posts to dentin (GFP). ERCs formulations: a 1:1 mass ratio of 2,2-bis[4-(2-hydroxy-3-methacryloxypropoxy)phen
Braz. oral res.. Publicado em: 14/11/2018
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19. Biomechanical alterations of gait on overweight subjects
Abstract Introduction Obesity is a major global public health issue and approximately half of the population is classified as overweight. Many studies have investigated gait modification in obese people; however, no research has been carried out in overweight subject´s gait influence. Methods The goal of this study was to identify biomechanical changes
Res. Biomed. Eng.. Publicado em: 08/11/2018
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20. Chlorhexidine and proanthocyanidin enhance the long-term bond strength of resin-based endodontic sealer
Abstract The aim of this study was to evaluate the effects of proanthocyanidin (PA) and chlorhexidine (CHX) on the bond strength (BS), failure pattern, and resin-dentin interface morphology of the endodontic sealers EndoREZ and AH Plus after 24 h and 6 months of water storage. A total of 120 prepared bovine roots were divided into six groups: AH Plus, CHX+AH
Braz. oral res.. Publicado em: 24/05/2018
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21. Can intra-radicular cleaning protocols increase the retention of fiberglass posts? A systematic review
Abstract The presence of residues within the root canal after post-space preparation can influence the bond strength between resin cement and root dentin when using fiberglass posts (FGPs). Currently, there is no consensus in the literature regarding what is the best solution for the removal of debris after post-space preparation. This systematic review invo
Braz. oral res.. Publicado em: 15/03/2018
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22. Push-out bond strength of different tricalcium silicate-based filling materials to root dentin
Abstract: The aim of this study was to evaluate the bond strength of different triccalcium silicate cements to retrograde cavity using a push out test. Thirty maxillary central incisors were shaped using #80 hand files and sectioned transversally. Root slices were obtained from the apical 4 mm after eliminating the apical extremity. The specimens were embedd
Braz. oral res.. Publicado em: 08/03/2018
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23. Bond strength values of fiberglass post to flared root canals reinforced with different materials
Abstract The aim of this study was to compare in vitro the bond strength (BS) between fiberglass posts and flared root canals reinforced with different materials. The roots of 48 premolars were endodontically treated. After one week, the root canals were prepared to simulate an oversized root canal, except for the positive control group (PCG), which was ceme
Braz. oral res.. Publicado em: 01/03/2018
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24. Effect of Blood Contamination on The Push-Out Bond Strength of Calcium Silicate Cements
Resumo Este estudo investigou o efeito da contaminação sanguínea na resistência de união do BiodentineTM (BD) e do MTA Angelus® (MTA-A) à dentina, em diferentes períodos. Vinte e cinco dentes foram seccionados para obter 120 fatias de dentina. Os lúmens das fatias foram preenchidos com MTA-A ou BD: 60 para cada cimento (30 não-contaminados e 30 con
Braz. Dent. J.. Publicado em: 2018-03