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Dental implant surface

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https://www.readbyqxmd.com/read/29140388/titanium-activates-the-dna-damage-response-pathway-in-oral-epithelial-cells-a-pilot-study
#1
Fernando Suárez-López Del Amo, Ivan Rudek, Vivian Petersen Wagner, Manoela D Martins, Francisco O'Valle, Pablo Galindo-Moreno, William V Giannobile, Hom-Lay Wang, Rogerio M Castilho
PURPOSE: To evaluate the effect of titanium (Ti) particles on oral epithelial cell homeostasis and the potential of dental implants to release Ti debris upon insertion. MATERIALS AND METHODS: Dental implants with varying surface treatments were employed to determine the feasibility of particle release during implant placement as well as the impact of free Ti debris on oral epithelial cells. Ti particles derived from implant surfaces were isolated and cultured in direct contact with normal oral epithelial cells for 48 hours...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140381/consistency-of-dental-hygiene-therapy-utilizing-various-dental-hygiene-instrumentation-and-its-effect-on-peri-implant-health-and-survival-of-dental-implants-a-retrospective-study
#2
Sarah B Hoerler, Sandra K Nietz, Victoria L Zook, Christine M Lohse, Thomas J Salinas, Alan B Carr, Daniel A Assad
PURPOSE: The purpose of this retrospective study was to provide practice-based evidence to determine if the consistency of dental hygiene therapy, despite utilizing instrumentation literature that has proven to cause alterations to implant surfaces, affects peri-implant health or survival. MATERIALS AND METHODS: The study sample comprised patients with implant-supported full-arch fixed dental prostheses who were distributed into two groups. The consistent hygiene group patients had dental hygiene therapy at a minimum biannually and were exposed to at least three dental hygiene instrument materials...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140368/in-vitro-bioactivity-test-of-real-dental-implants-according-to-iso-23317
#3
Martina Kolafová, Jan Šťovíček, Jakub Strnad, Josef Zemek, Jiři Dybal
PURPOSE: The goal of this study was to compare the in vitro bioactivity in simulated body fluid (SBF) of commercially available dental implants. MATERIALS AND METHODS: Bioactivity, according to ISO 23317, of commercially available dental implants with various surface modifications (BIO-surface, SLA, SLActive, TiUnite, and OsseoSpeed) was tested in SBF for 1 and 3 weeks. Surface characterizations, especially calcium and phosphorus surface content before and after the immersion in SBF, were performed...
November 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/29140074/facile-and-versatile-strategy-for-construction-of-anti-inflammatory-and-antibacterial-surfaces-with-polydopamine-mediated-liposomes-releasing-dexamethasone-and-minocycline-for-potential-implants-applications
#4
Xiao Xu, Lixin Wang, Zuyuan Luo, Yaofeng Ni, Haitao Sun, Xiang Gao, Yongliang Li, Siqi Zhang, Yan Li, Shicheng Wei
Reducing early nonbacterial inflammation induced by implanted materials and infection resulting from bacterial contamination around the implant-abutment interface could greatly accelerate implant osseointegration and reduce implant failure, which would be of clinical significance. In this study, we developed a facile and versatile strategy for the construction of anti-inflammatory and antibacterial surfaces on implants, such as orthopedic/dental implants. Briefly, the surfaces of polystyrene (PS) culture plates were first coated with polydopamine and then decorated with dexamethasone plus minocycline-loaded liposomes (Dex/Mino liposomes), which was confirmed by contact angle goniometry, X-ray photoelectron spectroscopy, and fluorescence microscopy...
November 15, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29138601/zinc-phosphate-as-a-definitive-cement-for-implant-supported-crowns-and-fixed-dentures
#5
Dennis Flanagan
Implant-supported dental prostheses can be retained by a screw or cement. Implant-supported fixed partial dentures have a passive fit. A passive fit means there is an internal gap between the abutment surface and the intaglio of the retainer to insure that there is no lateral pressure on the supporting implants or friction upon seating of the prosthesis. This gap is filled with cement for retention of the prosthesis. Any lateral pressure may cause marginal bone loss or periimplantitis. Also, there is usually a microscopic gap at the margin of a crown retainer that exposes the cement to oral fluids...
2017: Clinical, Cosmetic and Investigational Dentistry
https://www.readbyqxmd.com/read/29124235/in-vivo-xct-bone-characterization-of-lattice-structured-implants-fabricated-by-additive-manufacturing
#6
A-F Obaton, J Fain, M Djemaï, D Meinel, F Léonard, E Mahé, B Lécuelle, J-J Fouchet, G Bruno
Several cylindrical specimens and dental implants, presenting diagonal lattice structures with different cell sizes (600, 900 and 1200 μm) were additively manufactured by selective laser melting process. Then they were implanted for two months in a sheep. After removal, they were studied by Archimedes' method as well as X-ray computed tomography in order to assess the penetration of bone into the lattice. We observed that the additive manufactured parts were geometrically conformed to the theoretical specifications...
August 2017: Heliyon
https://www.readbyqxmd.com/read/29114582/engineering-microdent-structures-of-bone-implant-surfaces-to-enhance-osteogenic-activity-in-mscs
#7
Sophia Li, Thomas Chow, Julia Chu
Problems persist with the integration of hip and dental implants with host bone tissues, which may result in long-term implant failure. Previous studies have found that implants bearing irregular surfaces can facilitate osseointegration. An improvement to this approach would use implant surfaces harboring a well-defined surface microstructure to decrease variability in implant surfaces. In this study, we tested whether well-defined surfaces with arrays of microdents (each with depth approximately 3 µm) significantly affected the morphology, proliferation, and osteogenic activity of mesenchymal stem cells (MSCs)...
March 2017: Biochemistry and Biophysics Reports
https://www.readbyqxmd.com/read/29098762/photofunctionalization-of-anodized-titanium-surfaces-using-uva-or-uvc-light-and-its-effects-against-streptococcus-sanguinis
#8
Sakshi Jain, Randall S Williamson, Mary Marquart, Amol V Janorkar, Jason A Griggs, Michael D Roach
UV light preirradiation of anodized titanium oxide layers has recently been shown to produce a photocatalytic effect that may reduce early bacterial attachment on titanium surfaces. Streptococcus species have been identified as primary early colonizers and contribute to early biofilm formation on dental implant surfaces. Anodized layers with primarily amorphous, primarily anatase, primarily rutile, and mixtures of anatase and rutile phase oxides were preirradiated with UVA or UVC light for 10 min. Nanoscale surface roughness and pre- and post-UV-irradiated wettability were measured for each anodization group...
November 3, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29089765/osseointegration-of-layer-by-layer-polyelectrolyte-multilayers-loaded-with-igf1-and-coated-on-titanium-implant-under-osteoporotic-condition
#9
Helin Xing, Xing Wang, Saisong Xiao, Guilan Zhang, Meng Li, Peihuan Wang, Quan Shi, Pengyan Qiao, Lingling E, Hongchen Liu
PURPOSE: Titanium implant is a widely used method for dental prosthesis restoration. Nevertheless, in patients with systemic diseases, including osteoporosis, diabetes, and cancer, the success rate of the implant is greatly reduced. This study investigates a new implant material loaded with insulin-like growth factor 1 (IGF1), which could potentially improve the implant success rate, accelerate the occurrence of osseointegration, and provide a new strategy for implant treatment in osteoporotic patients...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29084299/effects-of-cement-abutment-surface-pretreatment-and-artificial-aging-on-the-force-required-to-detach-cantilever-fixed-dental-prostheses-from-dental-implants
#10
Stefanie Kappel, Taras Chepura, Marc Schmitter, Peter Rammelsberg, Stefan Rues
PURPOSE: To examine the in vitro effects of different cements, abutment surface preconditioning, and artificial aging on the maximum tensile force needed to detach cantilever fixed dental prostheses (FDPs) from dental implants with titanium abutments. MATERIALS AND METHODS: A total of 32 tissue-level implants were combined with standardized titanium abutments. For each test group, eight cantilever FDPs were fabricated using selective laser melting (cobalt-chromium [CoCr] alloy)...
November 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29075415/updated-secondary-implant-stability-data-of-two-dental-implant-systems-a-retrospective-cohort-study
#11
Nicolas Grognard, Gino Verleye, Dimitrios Mavreas, Bart Vande-Vannet
BACKGROUND: At present, updated secondary implant stability data generated by actual versions of resonance frequency analysis (RFA) and mobility measurement (MM) electronic devices of 2 different implant systems with actual manufactured surfaces seem to lack and/or are incomplete. MATERIAL AND METHODS: Secondary implant stability data based on both RFA and MM measurements were collected and analyzed from 44 formerly treated patients (24 f, 20 m) that received either Ankylos Cellplus (Ø3...
September 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29067778/dentists-most-common-practices-when-selecting-an-implant-system
#12
Ahed Al-Wahadni, Mohamed S Barakat, Khladoon Abu Afifeh, Yusuf Khader
PURPOSE: To report a comprehensive description of dental implant system selection practices among dentists practicing implantology worldwide. MATERIALS AND METHODS: An online questionnaire was designed and sent to members of 15 dental implant organizations. The survey questions addressed: dental implant system selection criteria, implant design variables, dentists' perspective to implant quality stamps, and dentists' satisfaction with their implant system(s). Responses were compiled and analyzed to determine correlation of responses using the chi-squared test (level of significance α ≤ 0...
October 25, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29067777/surface-modification-of-bulk-titanium-substrates-for-biomedical-applications-via-low-temperature-microwave-hydrothermal-oxidation
#13
Alice Cheng, W Brandon Goodwin, Ben M deGlee, Rolando A Gittens, Jonathan P Vernon, Sharon L Hyzy, Zvi Schwartz, Kenneth H Sandhage, Barbara D Boyan
Micro-to-nanoscale surface topographies of orthopaedic and dental implants can affect fluid wetting and biological response. Nanoscale features can be superimposed on microscale roughness of titanium (Ti) surfaces at high temperatures, resulting in increased osteoblast differentiation. However, high temperatures can compromise mechanical properties of the bulk material. Here, we have developed a novel low-temperature microwave hydrothermal (MWHT) oxidation process for nanomodification of microrough (SLA) Ti surfaces...
October 25, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/29067521/dental-implant-surfaces-after-insertion-in-bone-an-in-vitro-study-in-four-commercial-implant-systems
#14
Herbert Deppe, Carolina Wolff, Florian Bauer, Ricarda Ruthenberg, Anton Sculean, Thomas Mücke
OBJECTIVES: Primary healing of dental implants is influenced by their surface morphology. However, little is known about any alterations in morphology during their insertion. Therefore, the aim of this study was to evaluate the surface morphology of four different implant systems, following their insertion in porcine jaw bones. METHODS: Four fresh porcine mandible specimens were used. Six new implants of four systems (Ankylos® 4.5 × 14 mm, Frialit Synchro® 4...
October 24, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29064779/anatomic-customization-of-root-analog-dental-implants-with-cone-beam-ct-and-cad-cam-fabrication-a-cadaver-based-pilot-evaluation
#15
Zachary Presson Evans, Walter G Renne, Thierry R Bacro, Anthony S Mennito, Mark E Ludlow, Michael K Lecholop
Existing root-analog dental implant systems have no standardized protocols relative to retentive design, surface manipulation, or prosthetic attachment design relative to the site's unique anatomy. Existing systems historically made these design choices arbitrarily. For this report, strategies were developed which deliberately reference the adjacent anatomy, implant and restorable path of draw, and bone density for the purposes of implant and retentive design. For proof-of-concept, dentate arches from human cadavers were scanned with cone-beam computed tomography and digitally modeled...
October 24, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29064770/managing-titanium-mesh-exposure-with-the-partial-removal-of-the-exposed-site-a-case-series-study
#16
Aladdin Al-Ardah, Abdulaziz AlHelal, Periklis Proussaefs, Bader AlBader, Abdulakareem A Al Humaidan, Jaime Lozada
This case series report aimed at evaluating the efficacy of addressing exposure of the Titanium mesh by sectioning the exposed portion of the mesh and allowing the remaining portion in place while bone maturation is complete. The use of Titanium mesh for localized alveolar ridge augmentation was evaluated with clinical and radiographic analysis. Materials and methods in the current case series report includes four consecutively treated patients where a titanium mesh was utilized as a barrier for localized alveolar ridge augmentation and exposure of the mesh occurred after the alveolar ridge augmentation procedure...
October 24, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29064768/can-peek-be-an-implant-material-evaluation-of-surface-topography-and-wettability-of-filled-versus-unfilled-peek-with-different-surface-roughness
#17
Tarek Ayman El Awadly, Iman Radi, Amr El Khadem, Reham Osman
PEEK (polyetheretherketone) composites are biocompatible materials and may overcome esthetic and allergic problems of titanium dental implants. However, their potential for osseointegration with the subsequent survival rate is still questionable. Aim of the study was to evaluate the sur-face roughness and wettability of different surface treated filled and unfilled PEEK specimens, which may be indicative of the osseointegration behavior and the potential use of PEEK as an implant material. Unfilled, ceramic filled (CFP) and carbon fiber reinforced (CFRP) PEEK discs were prepared and left untreated or were surface treated with 50µ, 110µ, 250µ aluminum oxide particles...
October 24, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29061284/corrosion-behavior-of-titanium-in-response-to-sulfides-produced-by-porphyromonas-gingivalis
#18
Rino Harada, Eitoyo Kokubu, Hideaki Kinoshita, Masao Yoshinari, Kazuyuki Ishihara, Eiji Kawada, Shinji Takemoto
OBJECTIVE: To investigate the effects of sulfides produced by Porphyromonas gingivalis (P. gingivalis) on the corrosion behavior of titanium. METHODS: Commercially pure titanium disks were mirror-polished and immersed in culture medium (BHI), spent medium after culturing P. gingivalis (BHI-S), and culture medium with P. gingivalis (BHI-P), and incubated aerobically at 37°C for 3-14 days. Titanium corrosion was evaluated through surface observation (using scanning electron microscope: SEM), color change (ΔE*ab), glossiness (Gs(20°)), chemical composition and state (using X-ray photoelectron spectroscopy: XPS), and titanium release...
October 20, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29053657/histological-differences-in-the-adherence-of-connective-tissue-to-laser-treated-abutments-and-standard-abutments-for-dental-implants-an-experimental-pilot-study-in-humans
#19
M Blázquez-Hinarejos, R Ayuso-Montero, J-M Álvarez-López, M-C Manzanares-Céspedes, J López-López
BACKGROUND: The goal of the current study is to assess the difference in connective tissue adherence to laser microtextured versus machined titanium abutments. MATERIAL AND METHODS: Six patients were selected and each of them received 2 implants, one combined with a laser treated abutment and one with a machined abutment. After three months, the abutments were retrieved together with their surrounding gingival tissue for histological analysis. Qualitative and quantitative evaluation of microscopical images was performed to assess the presence or absence of adherence between the soft tissues and the abutment, and the percentage of soft tissue adhered to the two different surfaces...
November 1, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/29049874/balancing-bacteria-osteoblast-competition-through-selective-physical-puncture-and-biofunctionalization-of-zno-polydopamine-arginine-glycine-aspartic-acid-cysteine-nanorods
#20
Jun Li, Lei Tan, Xiangmei Liu, Zhenduo Cui, Xianjin Yang, Kelvin Wai Kwok Yeung, Paul K Chu, Shuilin Wu
Bacterial infection and lack of bone tissue integration are two major concerns of orthopedic implants. In addition, osteoinductivity often decreases and toxicity may arise when antibacterial agents are introduced to increase the antibacterial ability. Here hybrid ZnO/polydopamine (PDA)/arginine-glycine-aspartic acid-cysteine (RGDC) nanorod (NR) arrays are designed and prepared on titanium (Ti) implants to not only enhance the osteoinductivity but also effectively kill bacteria simultaneously, which are ascribed to the selective physical puncture and the biofunctionalization of ZnO/PDA/RGDC nanorods during the competition between bacteria and osteoblasts...
October 23, 2017: ACS Nano
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