Article
Chemistry, Physical
Hideaki Sato, Hiroshi Ishihata, Yutaka Kameyama, Ryokichi Shimpo, Satoshi Komasa
Summary: Oral dysfunction due to peri-implantitis and shortened life of implants is a major concern, with self-care and professional mechanical tooth cleaning being essential for prevention. Concerns about increased implant surface roughness due to cleaning with calcium carbonate have led to the development of a new blasting cleaning method using agar particles. This method effectively removes stains while maintaining surface gloss and minimal roughness.
Article
Materials Science, Multidisciplinary
Lian-Kui Wu, Ya-Ting Bao, Mei-Yan Jiang, Qing-Qing Sun, Fa-He Cao
Summary: The influence of surface pretreatment on the oxidation performance of anodized TiAl alloy was investigated. It was found that the humps on the rough surface serve as crystallographic templates for the nucleation of isostructural alpha-Al2O3, which improves the oxidation resistance of the alloy during anodization.
Article
Engineering, Mechanical
Dixon J. Atkins, Allison L. Chau, Jonah M. Rosas, Yen-Tsung Chen, Samantha T. Chan, Juan Manuel Uruena, Angela A. Pitenis
Summary: Some textured silicone breast implants with high surface roughness have been linked to a rare cancer called Breast Implant-Associated Anaplastic Large Cell Lymphoma (BIA-ALCL). The wear debris from silicone elastomer may cause chronic inflammation, which is a significant factor in the development of this cancer. By studying different types of implants, we found that lower surface roughness leads to lower friction and smaller quantities of wear debris.
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES
(2023)
Article
Chemistry, Physical
Andrea El Hassanin, Giuseppe Quaremba, Pasquale Sammartino, Daniela Adamo, Alessandra Miniello, Gaetano Marenzi
Summary: This research accurately investigated the surface morphology and chemical composition of commercially available dental implants through multivariate and multidimensional statistical analysis. Results showed significant differences in terms of implant surface roughness between the examined fixtures, with some implants showing residuals from industrial surface treatments.
Article
Biochemistry & Molecular Biology
Morena Petrini, Tania Vanessa Pierfelice, Emira D'Amico, Natalia Di Pietro, Assunta Pandolfi, Camillo D'Arcangelo, Francesco De Angelis, Domitilla Mandatori, Valeria Schiavone, Adriano Piattelli, Giovanna Iezzi
Summary: Current research on dental implants has focused on the influence of surface roughness on osseointegration rate, while studies on developing surfaces to improve interaction with peri-implant soft tissues are lacking. This study showed that implant discs with Ti-S surfaces promoted adhesion and proliferation of gingival fibroblasts in vitro, suggesting their potential for in vivo applications. Further research is needed to confirm these findings.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Chemistry, Multidisciplinary
Meltem Bayrak, Necla Asli Kocak-Oztug, Karan Gulati, Serdar Cintan, Emine Cifcibasi
Summary: This study aims to investigate the influence of different decontamination techniques on implant surface topography and hydrophilicity. The results showed that diode laser treatment had the least disruptive effect on the Ti surface characteristics, while other mechanical methods caused significant alterations in surface roughness.
Article
Engineering, Chemical
Nergizhan Anac, Zekeriya Dogan
Summary: This study investigates the usability of three different organic wastes in abrasive blasting and examines the effect of blasting distance, blasting time, powder type, and grain size on surface roughness. The results show that blasting time has the greatest effect on surface roughness.
Article
Metallurgy & Metallurgical Engineering
Gurmider Singh, Sunpreet Singh, Chander Prakash, Seeram Ramakrishna
Summary: A novel method using SBSL beads for shot blasting of Mg-AZ31 alloy was proposed in this study. The effects of different blasting parameters on surface properties were studied, and multi-objective optimization was conducted. The results showed that the method was effective in producing surfaces with good biocompatibility and desired morphological features.
JOURNAL OF MAGNESIUM AND ALLOYS
(2021)
Article
Materials Science, Multidisciplinary
Dongdong Ye, Zhou Xu, Jiabao Pan, Changdong Yin, Doudou Hu, Yiwen Wu, Rui Li, Zhen Li
Summary: A hybrid artificial neural network was used to optimize the grit blasting process for improving the structural properties and corrosion resistance performance of thermal spraying coatings. The optimized model showed good prediction performance and provided an innovative approach to potentially enhance the comprehensive service performance of thermal spraying coatings.
Article
Engineering, Multidisciplinary
Ehsan Anbarzadeh, Bijan Mohammadi
Summary: This study investigated the best sandblasting conditions for dental implant fixtures by examining 18 different sandblasting conditions. The parameters included particle size, blasting pressure, and blasting angle. Surface treatment was performed using the SLA + Anodizing method, and AFM testing was conducted to compare surface roughness. State No. 4, prepared using the SLA + Anodizing method with a surface roughness of 1.989 μm, showed the best sandblasting conditions with high cell viability and accelerated bone formation.
JOURNAL OF BIONIC ENGINEERING
(2023)
Article
Electrochemistry
M. B. Garcia-Blanco, M. Diaz-Fuentes, E. Espinosa, A. M. Mancisidor, G. Vara
Summary: The study investigates surface quality issues of SLM parts and compares techniques including electropolishing, blasting, and laser treatment. Chemical polishing was found to be the best option, however, it comes with environmental risks.
TRANSACTIONS OF THE INSTITUTE OF METAL FINISHING
(2021)
Article
Medicine, General & Internal
Tian-Ge Deng, Ping Liu, Hong-Zhi Zhou, Yang Xue, Xue-Ni Zheng, Zhao-Hua Ji, Lei Wang, Kai-Jin Hu, Yu-Xiang Ding
Summary: The aim of this study was to observe the abrasion of implant drills and postoperative reactions for the preparation of the interradicular immediate implant bed during the COVID-19 pandemic and beyond. The improved surgery group was more effective, efficient, and economical than the traditional surgery group.
Article
Biochemistry & Molecular Biology
Susanne Jung, Marco Maria Moser, Johannes Kleinheinz, Arndt Happe
Summary: The surface roughness did not significantly affect cellular behavior, but there were slight differences between materials. Cells grown on zirconia dioxide exhibited higher cytotoxic effects, while those on lithium disilicate showed lower inflammation expression.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2021)
Article
Orthopedics
Maria Letizia Raffa, Vu-Hieu Nguyen, Philippe Hernigou, Charles-Henri Flouzat-Lachaniette, Guillaume Haiat
Summary: The study investigated the effect of interfacial load transfer between cementless implants and bone tissue on implant stability, revealing that stress-shielding effects may be more significant when the bone-implant contact ratio is low.
JOURNAL OF ORTHOPAEDIC RESEARCH
(2021)
Article
Engineering, Chemical
Dae-Kyu Kwon, Jae-Hak Lee
Summary: This study investigates the μ-AJM machining process of aluminum 6061 alloy and explores the impact of various environmental variables on surface roughness. By employing statistical analysis, optimal machining conditions are determined, and it is found that multiple factors significantly influence surface roughness.
Review
Orthopedics
Ricardo Rodriguez Colon, Vasudev Vivekanand Nayak, Paulo E. L. Parente, Philipp Leucht, Nick Tovar, Charles C. Lin, Kevin Rezzadeh, Jacques H. Hacquebord, Paulo G. Coelho, Lukasz Witek
Summary: Additive manufacturing, also known as 3D printing (3DP), has witnessed exponential growth in the past four decades, largely due to advancements in technology and increased accessibility. In the field of medicine, particularly orthopedics, 3DP has shown promising applications in areas such as patient education, surgical planning, and the development of personalized implants.
JOURNAL OF ORTHOPAEDIC RESEARCH
(2023)
Review
Dentistry, Oral Surgery & Medicine
Jenn J. Park, Danielle H. Rochlin, Yassmin Parsaei, Pradip R. Shetye, Lukasz Witek, Philipp Leucht, Piul S. Rabbani, Roberto L. Flores
Summary: The current standard treatment for alveolar cleft defects involves autogenous bone grafts. However, there is growing interest in regenerative medicine strategies to replace traditional grafts due to their limitations. Clinical studies on bone tissue engineering methods have shown inconsistent results and design limitations. It is important for reconstructive surgeons to be aware of preclinical studies in this field.
CLEFT PALATE CRANIOFACIAL JOURNAL
(2023)
Article
Engineering, Biomedical
Lukasz Witek, Vasudev Vivekanand Nayak, Ricardo Rodriguez Colon, Andrea Torroni, Marios D. Demetriou, Paulo G. Coelho
Summary: This study evaluated the in vivo application of a new bulk metallic glass material, Pd79Ag3.5P6Si9.5Ge2, as an endosteal implant in a sheep model. The results showed favorable bone-to-implant contact and bone remodeling, suggesting the potential of this material as an alternative to commonly used titanium alloys.
BIO-MEDICAL MATERIALS AND ENGINEERING
(2023)
Article
Orthopedics
Lukasz Witek, Paulo Eduardo Lima Parente, Andrea Torroni, Michael Greenberg, Vasudev Vivekanand Nayak, Jacques Henri Hacquebord, Paulo G. Coelho
Summary: This study compared manual and rotary Osseodensification (OD) instrumentation as well as two different pedicle screw thread designs in posterior lumbar stabilization. The results showed that the rotary instrumentation had significantly higher pullout strength than hand instrumentation at the 24-week healing time point. The bone-implant contact and bone area fraction occupancy were also higher for the rotary instrumentation, and there was less soft tissue infiltration in osteotomies prepared using OD instrumentation.
Article
Dentistry, Oral Surgery & Medicine
Yutaro Nakase, Satoshi Yamaguchi, Ernesto B. Benalcazar Jalkh, Pablo J. Atria, Lukasz Witek, Estevam A. Bonfante, Hefei Li, Takahiko Sakai, Rena Okawa, Kazuhiko Nakano, Satoshi Imazato
Summary: By comparing experimental CAD/CAM resin composite (RC) with commercially available CAD/CAM RC, the reliability, maximum principal stress, shear stress, and crack initiation were evaluated. The experimental CAD/CAM RC showed better fracture loads and reliability, suggesting its clinical usefulness for the restoration of primary molars.
Article
Engineering, Biomedical
Edmara T. P. Bergamo, Lukasz Witek, Ilana Ramalho, Adolfo C. O. Lopes, Vasudev Vivekanand Nayak, Estevam A. A. Bonfante, Nick Tovar, Andrea Torroni, Paulo G. G. Coelho
Summary: The aim of this study was to evaluate the bone healing of implants placed in the maxilla and mandible of subjects compromised with metabolic syndrome and type-2 Diabetes Mellitus. The results showed that healthy and metabolic syndrome subjects had higher bone-to-implant contact and bone area fraction occupancy within implant threads compared to type-2 Diabetes Mellitus subjects. In the mandible, healthy and metabolic syndrome subjects also had higher bone-to-implant contact and bone area fraction occupancy within implant threads compared to type-2 Diabetes Mellitus subjects. The amount of bone around implants was comparable in the maxilla and mandible.
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH PART B-APPLIED BIOMATERIALS
(2023)
Article
Engineering, Biomedical
Maria Jesus Pacheco-Vergara, Ernesto Byron Benalcazar-Jalkh, Vasudev V. Nayak, Edmara T. P. Bergamo, Bruce Cronstein, Andre Luis Zetola, Fernando Pessoa Weiss, Joao Ricardo Almeida Grossi, Tatiana Miranda Deliberador, Paulo G. Coelho, Lukasz Witek
Summary: The present study evaluated the effect of dipyridamole on the osseointegration of titanium implants in a large preclinical model. The results showed that dipyridamole had a positive effect on the early stages of osseointegration.
JOURNAL OF FUNCTIONAL BIOMATERIALS
(2023)
Article
Engineering, Biomedical
Lida Moradi, Lukasz Witek, Vasudev Vivekanand Nayak, Angel Cabrera Pereira, Ellen Kim, Julia Good, Chuan-ju Liu
Summary: This study developed an injectable thermo-responsive hydrogel for the delivery of Atsttrin, which simultaneously inhibited inflammation and stimulated cartilage regeneration and bone formation signaling pathways, thus promoting diabetic fracture healing.
Article
Dentistry, Oral Surgery & Medicine
E. Helal, P. C. Gierthmuehlen, E. A. Bonfante, T. M. B. Campos, L. S. Prott, R. Langner, F. A. Spitznagel
Summary: This study analyzed the influence of titanium-base (straight/angulated-screw-channel) on the failure-loads and bending-moments of two-piece ceramic and titanium-zirconium implants restored with monolithic-zirconia crowns after fatigue. The results showed that angulated-screw-channel had a significant effect on the failure-loads and bending-moments, and ceramic implants exhibited better load-bearing capacity. Therefore, angulated-screw-channel is recommended for both ceramic and titanium implants. In conclusion, both ceramic and titanium implants showed high reliability after fatigue and are safe for clinical application.
CLINICAL ORAL IMPLANTS RESEARCH
(2023)
Article
Dentistry, Oral Surgery & Medicine
Ernesto B. Benalcazar Jalkh, Ilana S. Ramalho, Edmara T. P. Bergamo, Larissa M. M. Alves, Ricardo Tanaka, Lukasz Witek, Paulo G. Coelho, Ronaldo Hirata, Estevam A. Bonfante
Summary: This study evaluated the reliability and failure modes of ultrathin (0.5 mm) lithium disilicate and ultra-translucent zirconia crowns for posterior teeth restorations. The results showed that the 0.5 mm lithium disilicate crowns had higher reliability under functional loads. Clinical Significance: Ultrathin lithium disilicate and zirconia crowns of 0.5 mm thickness may be indicated in anterior restorations and pre-molars. The indication of these crowns in high-load bearing regions must be carefully evaluated. Evaluation: 6/10.
JOURNAL OF ESTHETIC AND RESTORATIVE DENTISTRY
(2023)
Article
Dentistry, Oral Surgery & Medicine
Petra C. Gierthmuehlen, Frank A. Spitznagel, Maximilian Koschate, Estevam A. Bonfante, Lea S. Prott
Summary: This study aimed to investigate the effect of ceramic thickness and dental substrate on the survival rate and failure load of non-retentive occlusal veneers. The results showed that thin and ultrathin enamel-based veneers had higher failure loads than standard thickness dentin-based veneers. Therefore, non-retentive enamel-based veneers may serve as a conservative treatment option.
JOURNAL OF ESTHETIC AND RESTORATIVE DENTISTRY
(2023)
Article
Dentistry, Oral Surgery & Medicine
Gelson Luis Adabo, Diogo Longhini, Mariana Ribeiro Baldochi, Edmara Tatiely Pedroso Bergamo, Estevam Augusto Bonfante
Summary: Zirconia ceramics have a high probability of survival (up to 900 N-load), while lithium disilicate survives up to 300 N load only.
CLINICAL ORAL INVESTIGATIONS
(2023)
Review
Dentistry, Oral Surgery & Medicine
Raissa Monteiro Pereira, Renata Guimaraes Ribas, Thais Larissa do Amaral Montanheiro, Vanessa Modelski Schatkoski, Karla Faquine Rodrigues, Leticia Terumi Kito, Lucas Kazunori Kobo, Tiago Moreira Bastos Campos, Estevam Augusto Bonfante, Petra Christine Gierthmuehlen, Frank Akito Spitznagel, Gilmar Patrocinio Thim
Summary: The demand for dental materials is increasing in order to achieve better performance than the currently available materials. In the field of dental restorative ceramics, there has been a transition from metal-ceramic systems to highly translucent multilayered zirconia to improve both mechanical properties and aesthetics. Ceramics are widely used in prosthetic dentistry due to their attractive clinical properties, but efforts are being made to develop materials that meet both mechanical requirements and aesthetic aspects.
JOURNAL OF APPLIED ORAL SCIENCE
(2023)
Review
Materials Science, Biomaterials
Blaire V. Slavin, Quinn T. Ehlen, Joseph P. Costello, Vasudev Vivekanand Nayak, Estavam A. Bonfante, Ernesto B. Benalcazar Jalkh, Christopher M. Runyan, Lukasz Witek, Paulo G. Coelho
Summary: The field of cranio-maxillofacial (CMF) surgery is complex, and computer-aided design (CAD) and additive manufacturing (AM) offer opportunities for repairing CMF defects through 3D printed scaffolds and fixation devices. In vitro and in vivo studies are ongoing to optimize the design and composition of these scaffolds to promote bone regeneration. 3D printed anatomical models and surgical guides also have benefits for preoperative and intraoperative use. Extensive research, manufacturing capabilities, and regulatory oversight are required for the creation and implementation of these devices.
ACS BIOMATERIALS SCIENCE & ENGINEERING
(2023)
Article
Engineering, Biomedical
Raissa Monteiro Pereira, Tiago Moreira Bastos Campos, Estevam Augusto Bonfante, Gilmar Patrocinio Thim
Summary: This study evaluated the mechanical properties and microstructural features of in-house produced zirconia multilayer materials through characterization tests. The results showed that the bilayer zirconia materials had intermediate mechanical properties, and the failure origin was not at the interface, but residual stress was present between the layers.
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
(2023)
