Article
Chemistry, Physical
Ricardo Faria Ribeiro, Danilo Flamini Oliveira, Camila Bussola Tovani, Ana Paula Ramos, Ana Flavia Sanches Borges, Adriana Claudia Lapria Faria, Rossana Pereira de Almeida, Renata Cristina Silveira Rodrigues
Summary: This study evaluated the effects of different surface treatments on commercial yttria-tetragonal zirconia polycrystalline (Y-TZP) material. Samples treated with hydrofluoric acid-HF 40% showed significant improvement in contact angle and lower surface free energy. The use of nanofilms increased surface roughness. Silicatization and silanization treatments resulted in better bond strength between Y-TZP and dual resin cement.
Article
Multidisciplinary Sciences
Suriyakul Wongsue, Ornnicha Thanatvarakorn, Taweesak Prasansuttiporn, Piyarat Nimmanpipug, Thanapat Sastraruji, Keiichi Hosaka, Richard M. Foxton, Masatoshi Nakajima
Summary: This study investigated the effect of zirconia surface topography and its wettability after surface pretreatments on the microshear bond strength of a resin cement. The results showed that nanoscale surface irregularity was the most significant factor, while surface roughness and wettability also had an impact on the bond strength.
SCIENTIFIC REPORTS
(2023)
Article
Materials Science, Ceramics
Maria Eliza Steling Rego, Paula Nunes Guimaraes Paes, Fabiana Ribeiro da Silva Schanuel, Paula Mendes Jardim
Summary: The study investigated the effects of the SIE protocol steps on the topography of Y-TZP and its bond strength to resin cement. The results showed that exposure to 10% HF for sufficient time can etch zirconia at room temperature, leading to significant improvement in bond quality.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Biomedical
Song-Hee Seo, Jong-Eun Kim, Na-Eun Nam, Hong-Seok Moon
Summary: This study investigates the effect of acid etching treatment on the surface microstructure, roughness, and contact angle of zirconia, and compares its effects on the shear bond strength of resin cement. The results suggest that acid etching significantly alters the surface of zirconia and increases the resin cement's bond strength. Therefore, acid etching is a promising method for zirconia surface treatment.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
Article
Engineering, Biomedical
Song-Hee Seo, Jong-Eun Kim, Na-Eun Nam, Hong-Seok Moon
Summary: This study found that acid etching treatment significantly affects the surface microstructure, roughness, and contact angle of zirconia, leading to increased shear bond strength of resin cement. Variables such as etching time, air abrasion, and aging all play significant roles in the SBS values of zirconia.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
Article
Polymer Science
Awiruth Klaisiri, Apichai Maneenacarith, Nicha Jirathawornkul, Panattha Suthamprajak, Tool Sriamporn, Niyom Thamrongananskul
Summary: Occasional chipping can still occur with zirconia material despite its high strength. Emergency repairs can be accomplished using zirconia primer, adhesive agent, and resin composite when the fracture of zirconia exposes the zirconia framework. This study aimed to evaluate the effect of multiple applications of phosphate-containing primer on shear bond strength between zirconia and resin composite. The results showed that treating sandblasted zirconia surfaces with three applications of phosphate-containing primer prior to the adhesive agent maximized shear bond strength at zirconia and resin composite interfaces.
Article
Dentistry, Oral Surgery & Medicine
Franco Naoki Mezarina-Kanashiro, Erika Soares Bronze-Uhle, Fabio Antonio Piola Rizzante, Paulo Noronha Lisboa-Filho, Ana Flavia Sanches Borges, Adilson Yoshio Furuse
Summary: This study evaluated the microshear bond strength of a resin cement to Y-TZP after incorporating TiO2 nanotubes using different methods. Application of nTiO(2) mixed with isopropyl alcohol under high-pressure vacuum produced comparable bond strengths to conventional methods like air abrasion and silicatization without the need for sandblasting.
Article
Engineering, Chemical
Pan Liu, Lu Yuan, Min Liu, Yannan Zhang, Fanhao Meng, Bo Wang, Jianfeng Chen
Summary: This study aimed to evaluate the effects of Er:YAG laser and plasma treatment on the bond strength between Y-TZP and resin cement. The results showed that laser and plasma treatment can improve the bond strength between zirconia and resin cement, and mechanical treatment followed by plasma surface modification is more effective.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2023)
Article
Biotechnology & Applied Microbiology
Xiaoqian Wu, Kun Liu, Rui Luo, Jianhao Xu, Mingsheng Chen
Summary: This study investigated the use of atmospheric pressure plasma jet (APPJ) for modifying the surface of lithium disilicate glass ceramics (LDC) in resin cementation. The results showed that APPJ treatment method has great potential as an alternative to hydrofluoric acid (HF) in LDC-resin cementation, with acceptable bonding strength.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2023)
Article
Polymer Science
Masaki Asakura, Koki Aimu, Tatsuhide Hayashi, Masakazu Matsubara, Akimichi Mieki, Seiji Ban, Tatsushi Kawai
Summary: This study evaluated the bonding characteristics of a silane coupling agent (SCA) and a methyl methacrylate (MMA)-containing primer (MCP) for 11 types of commercial composite blocks (CBs) with different surface treatments. The results showed that the MCP-treated specimens had higher shear bond strength (SBS) than the SCA-treated specimens for most CBs, especially for non-sandblasted surfaces. However, sandblasting treatment improved SBS more effectively for the SCA-treated specimens.
Article
Polymer Science
Midori Kawamura, Yu Toida, Shuhei Hoshika, Refat Readul Islam, Yitong Li, Ye Yao, Yunqing Liu, Rafiqul Islam, Takaaki Sato, Yasushi Shimada, Hidehiko Sano
Summary: This study evaluated the microtensile bond strength and hardness of a new light-cured resin cement. The results showed that the resin cement exhibited good bonding performance and polymerization, which may contribute to improved adhesive strength.
Article
Polymer Science
Tzu-Yu Peng, Tien-Li Ma, I-Ta Lee, Sheng-Han Wu, Yuichi Mine, Chia-Cheng Lin
Summary: The study explored the use of an autofocus laser cutter to create grooves on the surface of PEEK, enhancing its bonding capability with dental resin cement. The laser-treated PEEK showed improved surface characteristics and comparable cell viability compared to untreated PEEK, indicating promise for enhancing bonding properties.
Article
Engineering, Chemical
Vinicius Aneas Rodrigues, Thais Cachute Paradella, Arianne Valim Pinto Coelho, Karina Barbosa Souza, Marco Antonio Bottino, Renata Marques de Melo, Mutlu Ozcan, Rodrigo Othavio Assuncao e Souza
Summary: The study aimed to verify the impact of glaze application on the shear bond strength between Y-TZP and veneering ceramic, and found that within the scope of the study, glazing application did not improve the bond strength to pressed veneering ceramic.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Liliya Vladislavova, Tomasz Smolorz, Nina Orlovskaya, Mykola Lugovy, Michael J. Reece, Stefan Koebel, Agnieszka Kopia, Malgorzata Makowska, Thomas Graule, Gurdial Blugan
Summary: This study examined the mechanical properties of ceramics with different grain sizes, showing that only linear elastic deformation occurs under high stress, ruling out domain switching in zirconia under the loading conditions studied.
Article
Chemistry, Multidisciplinary
Kumiko Yoshihara, Noriyuki Nagaoka, Yoji Makita, Yasuhiro Yoshida, Bart Van Meerbeek
Summary: To prevent secondary caries, researchers incorporated CPC-Mont into PMMA resin cement and found that 8% and 10% concentrations of CPC-Mont could maintain the mechanical properties of the cement while possessing antibacterial potential.
Article
Dentistry, Oral Surgery & Medicine
Marcela Moreira Penteado, Guilherme Schmitt de Andrade, Rodrigo Maximo Araujo, Alexandre Luiz Souto Borges, Luiz Felipe Valandro, Gabriel Kalil Rocha Pereira, Joao Mauricio Ferraz da Silva
Summary: The aim of this study was to evaluate the fatigue survival and stress distribution of different glass fiber post strategies versus a universal 2-piece fiber post system in restoring endodontically treated teeth without a ferrule. The results showed that the universal 2-piece fiber post system had the highest fatigue failure load and number of cycles for failure, while the composite resin-custom glass fiber post group had the lowest. All groups exhibited repairable failures. Finite element analysis showed that the universal 2-piece fiber post system had the lowest stress in root dentin.
JOURNAL OF PROSTHETIC DENTISTRY
(2023)
Article
Engineering, Biomedical
Michele Mirian May, Renan Vaz Machry, Sara Fraga, Guilherme Schmitt de Andrade, Marco Antonio Bottino, Luiz Felipe Valandro, Liliana Gressler May
Summary: This study evaluated the effect of resin cement coating with high and low viscosities on the flexural fatigue strength of machined lithium disilicate glass-ceramic. The results showed that the resin cement coating was able to revert the detrimental effects of machining on the fatigue strength of the glass-ceramic, and high and low viscosity cements behaved similarly in this improvement.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
(2023)
Review
Engineering, Biomedical
Luiz Felipe Valandro, Ana Carolina Cadore-Rodrigues, Kiara Serafini Dapieve, Renan Vaz Machry, Gabriel Kalil Rocha Pereira
Summary: The characteristics of dental ceramics, including adhesion to dental substrates, aesthetics, and mechanical properties, have been extensively studied. Glass-ceramics are favored for their optical characteristics, while polycrystalline ceramics offer superior strength. These materials have been tested under static loads, but it is important to consider the effect of cyclic load application, surface treatments, and adjustments on their performance. Understanding fatigue mechanisms, crack propagation, and failure patterns is essential for dental ceramic restorations.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Review
Engineering, Biomedical
Lucas Saldanha da Rosa, Rafaela Oliveira Pilecco, Rafael Sarkis-Onofre, Karla Zanini Kantorski, Luiz Felipe Valandro, Gabriel Kalil Rocha Pereira
Summary: This systematic review and meta-analysis aimed to assess the effects of different post-processing methods on the surface roughness and flexural strength of YSZ ceramics after grinding. The findings showed that while post-processing methods were able to improve the surface roughness, the flexural strength of the ground surfaces was generally higher compared to those treated with post-processing techniques, except for polishing.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Engineering, Biomedical
Andressa Borin Venturini, Kiara Serafini Dapieve, Paul de Kok, Gabriel Kalil Rocha Pereira, Luiz Felipe Valandro, Cornelis Johannes Kleverlaan
Summary: The aim of this study was to analyze the influence of the region (internal or external) of CAD/CAM blocks on the mechanical performance of restorative materials. Various CAD/CAM materials were selected, and resin composite blocks were built using the incremental technique. The blocks were sectioned into specimens and divided into two groups based on their region. Tests showed no significant difference in flexural strength between the internal and external regions, except for LULT and EMAX. Overall, the region from where the restoration is milled within the CAD/CAM block does not generally affect the mechanical performance of the material, except for LULT and EMAX.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Engineering, Biomedical
Lucas Saldanha da Rosa, Helder Callegaro Velho, Joao Paulo Mendes Tribst, Luiz Felipe Valandro, Cornelis Johannes Kleverlaan, Gabriel Kalil Rocha Pereira
Summary: The study evaluated the fatigue behavior of simplified anatomy lithium disilicate crowns under different cement/ceramic debonding scenarios. Load to failure tests and cyclic fatigue tests were conducted to determine the parameters. The results showed that compromised chemical adhesion leads to worsened fatigue behavior. Fractures mainly occurred in the occlusal portion due to stress concentration in the crown and cement layer.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Dentistry, Oral Surgery & Medicine
Bruna Mueller, Rafaela Oliveira Pilecco, Luiz Felipe Valandro, Vanessa Carla Ruschel, Gabriel Kalil Rocha Pereira, Jussara Karina Bernardon
Summary: The objective of this study was to assess the influence of immediate dentin sealing (IDS) on the fatigue behavior of laminate occlusal veneers fabricated with CAD/CAM lithium disilicate ceramic and resin composite. After surface conditioning and bonding, thermocycling and accelerated fatigue tests were conducted. The results showed that IDS had a positive effect on the fatigue behavior of resin composite restorations, but had no effect on lithium disilicate restorations. Micro-gaps were observed at the adhesive interface in the IDS group.
Article
Dentistry, Oral Surgery & Medicine
Andrea Baldi, Allegra Comba, Davide Rozzi, Gabriel Kalil Rocha Pereira, Luiz Felipe Valandro, Riccardo Michelotto Tempesta, Nicola Scotti
Summary: This study aimed to investigate the impact of preoperative design and finish line depth on the trueness and precision of different intraoral scanners (IOSs). The results showed that complex partial adhesive preparation designs influenced the trueness and precision of IOSs, leading to significant differences among them. Therefore, the resolution of the scanner should be considered during interproximal preparation, and placing the finish line close to adjacent structures should be avoided.
JOURNAL OF PROSTHETIC DENTISTRY
(2023)
Article
Dentistry, Oral Surgery & Medicine
William Garcia Alves, Luiza Freitas Brum Souza, Gabriel Kalil Rocha Pereira, Luiz Felipe Valandro, Myriam Pereira Kapczinski, Cristiane Machado Mengatto, Sara Fraga
Summary: This study compared the fit and fatigue behavior of two new CAD-CAM lithium disilicate materials with the standard IPS e.max CAD ceramic, and investigated the effect of thermal treatment on crown fit. The results showed that Rosetta SM and T-lithium exhibited similar fit and fatigue behavior to IPS e.max CAD. Crystallization reduced the internal space of the crowns.
JOURNAL OF PROSTHETIC DENTISTRY
(2023)
Article
Dentistry, Oral Surgery & Medicine
Lisseth Patricia Claudio Contreras, Camila Silva Rodrigues, Camila Pauleski Zucuni, Luiz Felipe Valandro, Susana Maria Salazar Marocho, Renata Marques de Melo
Summary: This study evaluated the fatigue failure load and the number of cycles for fatigue failure of porcelain-veneered zirconia samples prepared with different techniques. The results showed that the reversed design decreased the fatigue failure load and the number of cycles for fatigue failure of bilayers prepared with different techniques.
JOURNAL OF PROSTHODONTICS-IMPLANT ESTHETIC AND RECONSTRUCTIVE DENTISTRY
(2023)
Article
Dentistry, Oral Surgery & Medicine
Pablo Machado Soares, Lucas Saldanha da Rosa, Gabriel Kalil Rocha Pereira, Luiz Felipe Valandro, Marilia Pivetta Rippe, Amanda Maria de Oliveira Dal Piva, Albert J. Feilzer, Cornelis J. Kleverlaan, Joao Paulo Mendes Tribst
Summary: This study evaluated the mechanical behavior and risk of failure of three CAD-CAM crowns repaired with different resin composites. The results showed that the crown material affected the stress concentration and the shear bond strength, with repaired CAD-CAM resin composite crowns exhibiting better mechanical performance and lower risk of failure.
Article
Dentistry, Oral Surgery & Medicine
Ana Flavia Nunes Reis, Alexandre Luiz Souto Borges, Thais Cachute Paradella, Rita Adriana Souza da Silva de Assis, Luiz Felipe Valandro, Renata Marques de Melo
Summary: This study evaluated the effects of photo- and dual-polymerized resin-based luting agent on ultra-thin lithium disilicate (LD) glass-ceramic strengthening, structural reliability, and stress distribution. The results showed that the biaxial flexural strength and characteristic strength at the ceramic/resin cement interface were not influenced by the resin cement.
CLINICAL ORAL INVESTIGATIONS
(2023)
Article
Engineering, Biomedical
Gabriela Carrao Aragonez, Fernanda Dalla -Nora, Pablo Machado Soares, Gabriel Kalil Rocha Pereira, Luiz Felipe Valandro, Sailer Santos dos Santos, Marilia Pivetta Rippe
Summary: This study evaluated the mechanical fatigue behavior of different viscosities of dual-cured resin cement on yttria tetragonal zirconia polycrystals (3Y-TZP) and yttria-stabilized zirconia (4YSZ). The results showed that 3Y-TZP exhibited superior fatigue performance and was more influenced by the viscosity of the resin cement compared to 4YSZ.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Engineering, Biomedical
Rafaela Oliveira Pilecco, Lucas Saldanha da Rosa, Gabriel Kalil Rocha Pereira, Joao Paulo Mendes Tribst, Liliana Gressler May, Luiz Felipe Valandro
Summary: This study evaluated the effect of loss of adhesion in different regions of the bonding interface on the fatigue behavior of simplified lithium disilicate restorations. The results showed that the bonding surface plays a crucial role in the fatigue behavior and stress distribution.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Dentistry, Oral Surgery & Medicine
Renan Vaz Machry, Cesar Dalmolin Bergoli, Julia Kaster Schwantz, Lucas Pradebon Brondani, Tatiana Pereira-Cenci, Gabriel Kalil Rocha Pereira, Luiz Felipe Valandro
Summary: The study evaluated the longevity and aesthetic parameters of metal-ceramic crowns cemented onto resin composite prosthetic cores using a self-adhesive resin cement. The results showed a high survival rate and aesthetically satisfactory outcomes after an average follow-up of 62 months.
CLINICAL ORAL INVESTIGATIONS
(2023)
