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
Dentistry, Oral Surgery & Medicine
Sandro Basso Bitencourt, Daniela Micheline dos Santos, Natalia Almeida Bastos-Bitencourt, Elidiane Cipriano Rangel, Nilson Cristino da Cruz, Estevam Augusto Bonfante, Grace Mendonca De Souza, Aldieris Alves Pesqueira
Summary: This study characterized the surface of zirconia treated with different methods and evaluated the shear bond strength between veneering ceramic and zirconia after different aging processes. The results showed that plasma treatment improved the shear bond strength without causing phase transformation.
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
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
Materials Science, Ceramics
Sophie Cailliet, Marilyne Roumanie, Celine Croutxe-Barghorn, Guillaume Bernard-Granger, Richard Laucournet
Summary: Y-TZP, Ce-TZP, and Ce-TZP/Al2O3 materials are widely studied in dentistry. High loading photocurable formulations suitable for DLP printing were achieved in this study by using specific properties of the materials. The ceramics exhibit suitable curing behavior for DLP process, with Y-TZP formulations having a high conversion rate and ceria ceramic formulations having a specific UV absorption behavior for quick curing.
CERAMICS INTERNATIONAL
(2021)
Article
Dentistry, Oral Surgery & Medicine
Eva Jerman, Nina Luemkemann, Marlis Eichberger, Ruediger Hampe, Bogna Stawarczyk
Summary: This study investigated the impact of three different step-stress protocols on the fatigue behavior of zirconia materials. The results showed that the opacity of zirconia materials may affect their stability under varying step-stress protocols.
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
Materials Science, Ceramics
Wenjie Li, Jun Chen, Zhuan Li, Fu Chen, Lingfang Zou, Jiong Zhao, Zonglong Gao, Yue Wang, Yanqin Lu
Summary: Bioceramics play a crucial role in hard tissue repair in dentistry and orthopedics by promoting adhesion, proliferation, and differentiation of osteoblast cells. This study evaluated different BaTiO3 modified 3Y-TZP discs and found that the 5 mol% BT/3Y-TZP group exhibited higher density, lower open porosity, and superior hydrophilicity compared to other groups. Additionally, the 5 mol% BT/3Y-TZP group significantly promoted osteogenic differentiation of osteoblasts, indicating its potential for hard tissue repair.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Alex Tchinda, Laetitia Chezeau, Gael Pierson, Richard Kouitat-Njiwa, B. H. Rihn, Pierre Bravetti
Summary: The biocompatibility of rough and smooth surfaces of Y-TZP and ZrO2 discs was evaluated in this study. The results showed similar cell proliferation rates and coverage between Y-TZP and ZrO2 discs and control cells, regardless of the surface topography. Transcriptomic analysis indicated the excellent biocompatibility of Y-TZP, with differentially expressed transcripts mainly involved in mineral uptake and immune response pathways.
Article
Engineering, Biomedical
Ernesto B. Benalcazar Jalkh, Edmara T. P. Bergamo, Tiago M. B. Campos, Everardo N. S. de Araujo-Junior, Adolfo C. O. Lopes, Sergio M. Tebcherani, Satoshi Yamaguchi, Luis A. Genova, Petra C. Gierthmuehlen, Lukasz Witek, Paulo G. Coelho, Estevam A. Bonfante
Summary: This study evaluated the effect of fatigue and aging on the crystalline content and reliability of a zirconia-toughened-alumina (ZTA) composite compared to its individual counterpart materials (3Y-TZP and Al2O3). The results showed that aging and fatigue caused a significant increase in monoclinic phase in 3Y-TZP, while ZTA exhibited minimal variation. 3Y-TZP demonstrated higher reliability than ZTA at certain stress levels, and ZTA outperformed Al2O3. Aging did not affect the reliability of ZTA and Al2O3, while 3Y-TZP exhibited an increase in characteristic stress after aging.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
Article
Materials Science, Ceramics
Kohta Nambu, Taisuke Kitaoka, Koji Morita, Kohei Soga, Tomoharu Tokunaga, Takahisa Yamamoto, Hiroshi Masuda, Hidehiro Yoshida
Summary: In this study, flash joining experiments were conducted using an AC field on 3 mol% Y2O3-stabilized tetragonal ZrO2 polycrystal (Y-TZP) bodies. The necessary conditions for achieving almost complete self-joining of Y-TZP bodies were clarified. By applying an AC field at specific conditions, successful joining with 92% of the flexural strength of the as-sintered Y-TZP body was achieved.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Engineering, Biomedical
Lucas Hian da Silva, Laura Ajamil Rinaldi, Dolores Ribeiro Ricci Lazar, Valter Ussui, Rubens Nisie Tango, Renan Belli, Ulrich Lohbauer, Paulo Francisco Cesar
Summary: Y-TZP/MWCNT-SiO2 nanocomposite was synthesized using co-precipitation and hydrothermal treatment methods. The composite showed bundles of MWCNT-SiO2 with silica coating, and had a slightly different color compared to the conventional Y-TZP. The mechanical properties of the composite were similar to the conventional Y-TZP, except for the flexural strength which was lower.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
Article
Dentistry, Oral Surgery & Medicine
Sabine Begand, Sebastian Spintzyk, Juergen Geis-Gerstorfer, Christoph Bourauel, Ludger Keilig, Ulrich Lohbauer, Christin Worpenberg, Andreas Greuling, Ranko Adjiski, Klaus D. Jandt, Nina Luemkemann, Bogna Stawarczyk, Andre Guellmar, Andreas Kailer, Natalie Oberle, Marc Stephan
Summary: This interlaboratory round robin test investigated the robustness of the ChevronNotch Beam (CNB) test method and the effect of the processing and testing variations on the fracture toughness of a dental 3Y-TZP ceramic. The results revealed that the CNB method is suitable for determination of KIc on fine-grained ceramics such as 3Y-TZP ceramic, and by using tighter tolerances for processing and testing, a highly-precise evaluation of fracture toughness with low data variation is achievable.
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
Materials Science, Ceramics
Jinping Cui, Zhenyuan Gong, Pinggen Rao, Kang Guan, Qingfen Zeng
Summary: The femtosecond laser was utilized in this study to process ultra-sharp defects on test bars, with results showing consistent stress intensity factor ratios for different defect conditions. This method demonstrates high accuracy and operability for fracture toughness testing of structural ceramics.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Bong-Hyuk Choi, Yun Kee Jo, Cong Zhou, Hyon-Seok Jang, Jin-Soo Ahn, Sang Ho Jun, Hyung Joon Cha
APPLIED MATERIALS TODAY
(2020)
Article
Nanoscience & Nanotechnology
Hoon Kim, Kwang-Hyun Ryu, Dooyoung Baek, Tanveer Ahmed Khan, Hyun-Joong Kim, Sungchul Shin, Jinho Hyun, Jin Soo Ahn, Sug-Joon Ahn, Hyun Jeong Kim, Jaseung Koo
ACS APPLIED MATERIALS & INTERFACES
(2020)
Article
Nanoscience & Nanotechnology
Ji-Seop Shin, Muhammad Saqib, Minkyeong Jo, Kwangho Park, Kwang Min Park, Jin Soo Ahn, Hyung-Tae Lim, Jun-Young Park
Summary: The long-term thermal cycling has an impact on the durability of solid oxide fuel cells, with rapid thermal cycling leading to more severe performance degradation primarily due to electrode deterioration.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Biotechnology & Applied Microbiology
En-ji Cheon, Sung-Ho Kim, Dong-Keon Lee, Yun-Kee Jo, Mi-Ran Ki, Chang-Joo Park, Hyon-Seok Jang, Jin-Soo Ahn, Seung-Pil Pack, Sang-Ho Jun
Summary: The composite of beta-TCP and collagen (beta-TCP/col) showed a comparable bone-regenerating ability to the most commercially available Bio-Oss Collagen (R), inducing significantly accelerated bone formation in in vitro and in vivo experiments. Cells on the beta-TCP/col scaffold exhibited higher expression levels of osteogenic differentiation marker genes compared to Bio-Oss/col scaffold, indicating the potential of beta-TCP/col as a substitute for bone substitute materials.
BIOTECHNOLOGY AND BIOPROCESS ENGINEERING
(2021)
Article
Engineering, Biomedical
Eun-Hyuk Lee, Jin-Soo Ahn, Young-Jun Lim, Ho-Beom Kwon, Myung-Joo Kim
Summary: The post-curing time of 3D-printed resin for dental restorations significantly affects color stability and related properties such as degree of conversion, surface roughness, water contact angle, water sorption, and water solubility. Increasing post-curing time improves color stability, enhances degree of conversion, and decreases water contact angle.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Hyo-Jin Kim, Seung-Weon Lim, Mi-Kyung Lee, Sung Won Ju, Suk-Hee Park, Jin-Soo Ahn, Kyung-Gyun Hwang
Summary: This study aimed to compare the suitability of different 3D printing methods and the conventional method in the manufacturing of oral appliances. The results showed that the DLP method was the most suitable for manufacturing oral appliances in terms of water absorption and solubility, flexural strength, and surface hardness.
APPLIED SCIENCES-BASEL
(2022)
Article
Dentistry, Oral Surgery & Medicine
Soojin Park, Jae-Hoon Kim, Min-Kyung Lee, Jung-Joon Ihm, Jin-Soo Ahn, Jeong-Kil Park, Deog-Gyu Seo
Summary: This study aimed to compare the temperature changes of gold-restored teeth and intact teeth during the consumption of hot and cold drinks. The results showed that gold-restored teeth exhibited greater temperature changes in terms of magnitude and velocity compared to intact teeth.
EUROPEAN JOURNAL OF ORAL SCIENCES
(2022)
Article
Dentistry, Oral Surgery & Medicine
Eun-Hyuk Lee, Jin-Soo Ahn, Young-Jun Lim, Ho-Beom Kwon, Myung-Joo Kim
Summary: This in vitro study investigated the effects of layer thickness and printing orientation on the color stability and stainability of 3D-printed resin. The results showed that layer thickness, printing orientation, and storage time significantly influenced the color changes of the resin. Water contact angle and surface roughness did not have a significant effect on stainability.
JOURNAL OF PROSTHETIC DENTISTRY
(2022)
Article
Engineering, Chemical
Jin-Soo Ahn, Doo-Hwan Kim, Ki-Youn Kim
Summary: Airborne fungi emitted from livestock manure composting plants are a major health concern for workers and nearby residents. This study investigated the emission characteristics of airborne fungi in different types of composting plants and provided important data for preventing health issues among workers.
Article
Dentistry, Oral Surgery & Medicine
Se-Jun An, Hwalim Lee, Jin-Soo Ahn, Jung-Hwan Lee, Hae-Hyoung Lee, Yu-Sung Choi
Summary: The influence of thermal cycling and mechanical loading aging on fracture resistance and wear behavior of different chairside CAD/CAM premolar crowns was investigated. Glass-ceramic CAD/CAM crowns showed significantly higher fracture resistance than resin composite crowns. A 5-year TCML aging did not affect the fracture resistance of CAD/CAM crowns, but it produced larger wear tracks in resin nanoceramics than in other materials.
JOURNAL OF DENTISTRY
(2023)
Article
Cardiac & Cardiovascular Systems
Youn Huh, Jung Eun Yoo, Sang-Hyun Park, Kyungdo Han, Seon Mee Kim, Hye Soon Park, Kyung Hwan Cho, Jin-Soo Ahn, Sang Ho Jun, Ga Eun Nam
Summary: This study investigated the association between dental diseases, oral hygiene care, and the incidence of heart failure (HF) in patients with type 2 diabetes. The results showed that an increased number of missing teeth was associated with a higher risk of HF, while regular dental cleaning and frequent toothbrushing were associated with a decreased risk of HF. The presence of dental diseases increased the risk of HF, but good oral hygiene care further reduced the risk of HF.
JOURNAL OF THE AMERICAN HEART ASSOCIATION
(2023)
Article
Dentistry, Oral Surgery & Medicine
Jung-Hoon Choi, Seong-Joo Heo, Jai-Young Koak, Seong-Kyun Kim, Ji-Man Park, Jin-Soo Ahn
Summary: The purpose of this study was to evaluate the effect of hemispherical dimple structures on the retention of cemented crowns. The results showed that the use of dimples significantly increased the retention forces and higher abutment heights also increased the retention forces.
JOURNAL OF ADVANCED PROSTHODONTICS
(2023)
Article
Dentistry, Oral Surgery & Medicine
Junsik Lee, Sungwon Ju, Jihyung Kim, Sion Hwang, Jinsoo Ahn
Summary: The purpose of this in vitro study was to compare the accuracy of various 3D printers and a milling machine. The results showed that the digital light processing (DLP) method was more accurate compared to the sereolithography (SLA) method using the same resin material.
JOURNAL OF ADVANCED PROSTHODONTICS
(2023)
Article
Dentistry, Oral Surgery & Medicine
Seong-keun Yoo, Ye-Hyeon Jo, In-Sung Luke Yeo, Hyung-In Yoon, Jae-Hyun Lee, Jin-Soo Ahn, Jung-Suk Han
Summary: This study evaluated the surface characteristics of a clinically fabricated (Y, Nb)-TZP zirconia full veneer crown. The results showed that grinding and polishing significantly reduced surface roughness and reduced grain exposure. The conventional zirconia polishing sequence can achieve a clinically acceptable level of surface finishing.
JOURNAL OF ADVANCED PROSTHODONTICS
(2022)
Article
Dentistry, Oral Surgery & Medicine
Gerelmaa Myagmar, Jae-Hyun Lee, Jin-Soo Ahn, In-Sung Luke Yeo, Hyung-In Yoon, Jung-Suk Han
Summary: The study aimed to compare the wear resistance and surface roughness of three interim resin materials under chewing simulation. The results showed that the 3D printed resin material exhibited the least wear volume loss after 60,000 cycles, with a smoother surface compared to conventional resin material.
JOURNAL OF ADVANCED PROSTHODONTICS
(2021)
Article
Dentistry, Oral Surgery & Medicine
Chang Zeng, Pei Hu, Colin P. Egan, Brian E. Bergeron, Franklin Tay, Jingzhi Ma
Summary: The study compared the bacteria debridement efficacy of the first and second generations of sonic root canal irrigant activation systems. The results showed that activation of 2% NaOCl with either EndoActivator or SmartLite Pro EndoActivator significantly reduced the overall intracanal bacterial load compared to syringe-side-vented needle delivery. However, delivering 2% NaOCl for 5 minutes using the syringe-side-vented needle produced better bacteria debridement than either sonic agitation system.
JOURNAL OF DENTISTRY
(2024)
Article
Dentistry, Oral Surgery & Medicine
Alaa Husni Qari, Raghad Mohammed Alharbi, Shahd Saud Alomiri, Banan Nasser Alandanusi, Lina Ayman Mirza, Mohammad Hasan Al-Harthy
Summary: The study compares the experience of patients seen using teledentistry with traditional Orofacial Pain and TMD visits. Results indicated a borderline difference in effectively using teledentistry for follow-ups among different age groups, but no significant differences were found in patients' experience between virtual and conventional visits. This suggests that high-quality dental care services can be provided remotely without adversely affecting patient experience or quality of care.
JOURNAL OF DENTISTRY
(2024)
Article
Dentistry, Oral Surgery & Medicine
Giovanna Iezzi, Barbara Zavan, Morena Petrini, Letizia Ferroni, Tania Vanessa Pierfelice, Ugo D'Amora, Alfredo Ronca, Emira D'Amico, Carlo Mangano
Summary: This study characterized the surface topography and evaluated the biological responses of various cells to a novel 3D-printed dental implant. The surface of the implant showed a highly interconnected porous architecture and roughness, leading to good adhesion and growth of human oral osteoblasts, gingival fibroblasts, mesenchymal stem cells, and monocytes. These findings suggest that this 3D-printed implant has excellent potential for clinical applications.
JOURNAL OF DENTISTRY
(2024)