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Dental implant surface

Nadine Kommerein, Katharina Doll, Nico S Stumpp, Meike Stiesch
Peri-implant infections are the most common cause of implant failure in modern dental implantology. These are caused by the formation of biofilms on the implant surface and consist of oral commensal and pathogenic bacteria, which harm adjacent soft and hard tissues and may ultimately lead to implant loss. In order to improve the clinical situation, there has to be a better understanding of biofilm formation on abiotic surfaces. Therefore, we successfully developed a system to cultivate an oral multispecies biofilm model in a flow chamber system, optimized for the evaluation of biofilm formation on solid materials by direct microscopic investigation...
2018: PloS One
Chunyan Wang, Shengnan Wang, Yuanyi Yang, Zhuo Jiang, Yi Deng, Shaoli Song, Weizhong Yang, Zhi-Gang Chen
In this study, we develop an osteopromotive polyetheretherketone (PEEK) implant decorated with silk fibroin and bone forming peptide, in which the surface of bioinert PEEK implant is firstly sulfonated to form a three-dimensional, porous topography and then is functionalized with silk fibroin via spin-coating process and peptide decoration. The bio-test results show that cells on the functional bioinert implants exhibit better cell adhesion, proliferation and spreading, when compared with the uncoated ones...
May 15, 2018: Journal of Biomaterials Science. Polymer Edition
Federico Mussano, Tullio Genova, Marco Laurenti, Elisa Zicola, Luca Munaron, Paola Rivolo, Pietro Mandracci, Stefano Carossa
PURPOSE: This research aimed to assess whether pink-shaded anodized surfaces could enhance the adhesion of soft tissue cells compared with untreated machined titanium surfaces. MATERIALS AND METHODS: Two types of Ti-Al-V titanium samples were prepared: machined titanium (Ti) and anodized titanium (AnoTi). The microstructure was studied by means of a scanning electron microscope. X-ray photoelectron spectroscopy (XPS) was carried out as well. The wetting properties were investigated by the sessile drop technique with water and diiodomethane...
May 2018: International Journal of Oral & Maxillofacial Implants
Rahimeh Rasouli, Ahmed Barhoum, Hasan Uludag
The emerging field of nanostructured implants has enormous scope in the areas of medical science and dental implants. Surface nanofeatures provide significant potential solutions to medical problems by the introduction of better biomaterials, improved implant design, and surface engineering techniques such as coating, patterning, functionalization and molecular grafting at the nanoscale. This review is of an interdisciplinary nature, addressing the history and development of dental implants and the emerging area of nanotechnology in dental implants...
May 10, 2018: Biomaterials Science
Romana Nasrin, Shanta Biswas, Taslim Ur Rashid, Sanjida Afrin, Rumana Akhter Jahan, Papia Haque, Mohammed Mizanur Rahman
The present study explores the possibilities of using locally available inexpensive waste prawn shell derived chitin reinforced and bioabsorbable polylactic acid (PLA) laminated composites to develop new materials with excellent mechanical and thermal properties for implantable application such as in bone or dental implant. Chitin at different concentration (1-20% of PLA) reinforced PLA films (CTP) were fabricated by solvent casting process and laminated chitin-PLA composites (LCTP) were prepared by laminating PLA film (obtained by hot press method) with CTP also by hot press method at 160 °C...
December 2017: Bioactive Materials
I V Smirnov, J V Rau, M Fosca, A De Bonis, A Latini, R Teghil, V I Kalita, A Yu Fedotov, S V Gudkov, A E Baranchikov, V S Komlev
In the present study, the Pulsed Laser Deposition (PLD) technique was applied to coat titanium for orthopaedic and dental implant applications. Calcium carbonate (CC) was used as starting coating material. The deposited CC films were transformed into octacalcium phosphate (OCP) by chemical treatments. The results of X-ray diffraction (XRD), Raman, Fourier Transform Infrared Spectroscopy (FTIR) and scanning electron microscopy (SEM) studies revealed that the final OCP thin films are formed on the titanium surface...
June 2017: Bioactive Materials
Ceylin S Tastepe, Xingnan Lin, Arie Werner, Marcel Donnet, Daniel Wismeijer, Yuelian Liu
The aim of this study is to test the cleaning effect and surface modification of a new implant surface treatment on explanted dental implants and titanium discs. It is a modified air powder abrasive (APA) treatment applied using osteoconductive powders. Twenty-eight in vitro Ca-precipitated organic film-coated titanium discs and 13 explanted dental implants were treated. In a 2-step approach, 3 powders were used: hydroxylapatite (HA) and biomimetic calcium phosphate (BioCaP), which are osteoconductive, and erythritol, which is not...
February 2018: Clinical and Experimental Dental Research
Alyssa Epprecht, Marco Zeltner, Goran Benic, Mutlu Özcan
This study quantified the strain development after inserting implant-borne fixed dental prosthesis (FDP) to various implant-abutment joints. Two bone-level implants (∅ = 4.1 mm, RC, SLA 10 mm, Ti, Straumann) were inserted in polyurethane models (N = 3) in the area of tooth nos 44 and 47. Four-unit veneered zirconium dioxide FDPs (n = 2) were fabricated, one of which was fixed on engaging (E; RC Variobase, ∅ = 4.5 mm, H = 3.5 mm) and the other on non-engaging (NE) abutments (RC Variobase, ∅ = 4...
February 2018: Clinical and Experimental Dental Research
Anders Palmquist
Osseointegrated implants are frequently used in reconstructive surgery, both in the dental and orthopedic field, restoring physical function and improving the quality of life for the patients. The bone anchorage is typically evaluated at micrometer resolution, while bone tissue is a dynamic composite material composed of nanoscale collagen fibrils and apatite crystals, with defined hierarchical levels at different length scales. In order to understand the bone formation and the ultrastructure of the interfacial tissue, analytical strategies needs to be implemented enabling multiscale and multimodal analyses of the intact interface...
May 7, 2018: Journal of Materials Science. Materials in Medicine
Maryam Geramizadeh, Hamidreza Katoozian, Reza Amid, Mahdi Kadkhodazadeh
Objectives: This study aimed to optimize the thread depth and pitch of a recently designed dental implant to provide uniform stress distribution by means of a response surface optimization method available in finite element (FE) software. The sensitivity of simulation to different mechanical parameters was also evaluated. Materials and Methods: A three-dimensional model of a tapered dental implant with micro-threads in the upper area and V-shaped threads in the rest of the body was modeled and analyzed using finite element analysis (FEA)...
April 2018: Journal of the Korean Association of Oral and Maxillofacial Surgeons
Qiang Zeng, Yiwen Zhu, Bingran Yu, Yujie Sun, Xiaokang Ding, Chen Xu, Yu-Wei Wu, Zhihui Tang, Fu-Jian Xu
Combating implant-associated infections is an urgent demand due to the increasing numbers in surgical operations such as joint replacements and dental implantations. Surface functionalization of implantable medical devices with polymeric antimicrobial and antifouling agents is an efficient strategy to prevent bacterial fouling and associated infections. In this work, antimicrobial and antifouling branched polymeric agents (GPEG and GEG) were synthesized via ring-opening reaction involving gentamicin and ethylene glycol species...
May 4, 2018: Biomacromolecules
Agata Roguska, Anna Belcarz, Justyna Zalewska, Marcin Holdynski, Mariusz Andrzejczuk, Marcin Pisarek, Grazyna Ginalska
Titanium oxide nanotubes layers with silver and zinc nanoparticles are attracting increasing attention in the design of bone and dental implants, due to their antimicrobial potential and their ability to control host cell adhesion, growth and differentiation. However, recent reports indicate that the etiology of dental infections is more complex than has been previously considered. Therefore, the antimicrobial potential of dental implants should be evaluated against at least several different microorganisms cooperating in human mouth colonization...
May 2, 2018: ACS Applied Materials & Interfaces
Umberto Demoner Ramos, Flavia Suaid, Ulf Me Wikesjö, Cristiano Susin, Patrícia Conde Vital, Sérgio Luis Scombatti de Souza, Michel Reis Messora, Daniela Bazan Palioto, Arthur Belém Novaes
BACKGROUND: The aim of this split-mouth design pilot study was to assess microbiologic effects of two topical anti-infective treatment protocols on dental implants subject to ligature-induced peri-implantitis in dogs, without the use of systemic antibiotics. METHODS: Eight adult Beagle dogs each received four dental implants in contralateral edentulated mandibular jaw quadrants. After 8 wks, silk ligatures were installed to be removed following another 8 wks. After additional 6 wks induced peri-implantitis lesions were subject to either antimicrobial photodynamic therapy (aPDT) or a topical tetracycline HCL (50 mg/mL) solution...
May 1, 2018: Journal of Periodontology
Xiucheng Hu, Ruogu Xu, Xiaolin Yu, Jianyu Chen, Shuangquan Wan, Jianglin Ouyang, Feilong Deng
Selective laser melting (SLM) has promising prospects in manufacturing customized implants, however the rough surface of SLM titanium can facilitate bacterial adherence and biofilm formation, which is a risk to implant success. Therefore, surface modification is required to enhance its antibacterial efficacy. Sandblasting, anodization and electrochemical deposition were applied to construct a novel composite nanostructure of nanophase calcium phosphate embedded to TiO<sub>2</sub> nanotubes on microrough SLM substrates (NTN)...
May 1, 2018: Biomedical Materials
Aung Thu Hein, Young-Dan Cho, Ye-Hyeon Jo, Dae-Joon Kim, Jung-Suk Han
PURPOSE: This study was performed to evaluate the osteogenic potential of 3mol% yttria-stabilized tetragonal zirconia polycrystals (3Y-TZP) and niobium oxide containing Y-TZPs with specific ratios, new (Y,Nb)-TZPs, namely YN4533 and YN4533/Al20 discs. MATERIALS AND METHODS: 3Y-TZP, YN4533 and YN4533/Al20 discs (15 mm diameter and 1 mm thickness) were prepared and their average surface roughness (Ra ) and surface topography were analyzed using 3-D confocal laser microscope (CLSM) and scanning electron microscope (SEM)...
April 2018: Journal of Advanced Prosthodontics
B Beger, H Goetz, M Morlock, E Schiegnitz, B Al-Nawas
BACKGROUND: The aim of this study was to assess surface characteristics, element composition, and surface roughness of five different commercially available dental zirconia implants. Five zirconia implants (Bredent whiteSKY™ (I1), Straumann® PURE Ceramic (I2), ceramic.implant vitaclinical (I3), Zeramex® (I4), Ceralog Monobloc M10 (I5)) were evaluated. METHODS: The evaluation was performed by means of scanning electron microscopy (SEM), energy-dispersive X-ray spectroscopy (EDX), and confocal laser scanning microscopy (CLSM)...
April 26, 2018: International Journal of Implant Dentistry
Z F Huang, Z F Wang, C H Li, D Hao, J Lan
Objective: To investigate the osseointegration of a novel coating-plasma-sprayed zirconia in dental implant. Methods: Zirconia coating on non-thread titanium implant was prepared using plasma spraying, the implant surface morphology, surface roughness and wettability were measured. In vivo , zirconia coated implants were inserted in rabbit tibia and animals were respectively sacrificed at 2, 4, 8 and 12 weeks after implantation. The bond strength between implant and bone was measured by push-out test. The osseointegration was observed by scanning electron microscopy (SEM), micro CT and histological analyses...
April 9, 2018: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
Maria F Costa Pedro, Alessandro S Kalck, Kevin F Dos Santos, Marcos S Sousa, Karla B Romio, Paula C S Souto, Josmary R Silva, Nara C de Souza
The use of the layer-by-layer (LbL) deposition technique allows materials, such as drugs, to be self-assembled in multilayers with other electrolytes by combining their properties in a nanostructured system. Triclosan (TCS) is commonly used as a drug because of its bactericidal action, while erythrosine (ERY) has been used as a photosensitizer in photodynamic therapies because of its high light absorptivity in the visible region of the electromagnetic spectrum. The major advantage of investigating systems immobilized in LbL films is the benefit of characterizing the interaction through available substances in solid state techniques...
April 21, 2018: Photodiagnosis and Photodynamic Therapy
Rafael Amorim Cavalcanti Siqueira, Ivete Aparecida de Mattias Sartori, Paulo Gustavo Freitas Santos, Márcio John Thiesen, Mylene Cassia Gonçalves, Flávia Noemy Gasparini Kiatake Fontão
BACKGROUND: Characteristics of the implant surface may benefit osseointegration, and the knowledge of this process in diverse clinical situations may play a role in implant dentistry practice. PURPOSE: The aim of the present study was to compare the stability of dental implants with different types of surface treatment. MATERIALS AND METHODS: Fifty-five implants were placed in the mandibles of 11 fully edentulous patients. Group 1 (G1) consisted of 27 implants with a hydrophilic surface...
April 20, 2018: Implant Dentistry
Divya Rani Bijukumar, Clay McGeehan, Mathew T Mathew
PURPOSE OF REVIEW: Recently, significant progress has been made in the research related to regenerative medicine. At the same time, biomedical implants in orthopedics and dentistry are facing many challenges and posing clinical concerns. The purpose of this chapter is to provide an overview of the clinical applications of current regenerative strategies to the fields of dentistry and orthopedic surgery. The main research question in this review is: What are the major advancement strategies in regenerative medicine that can be used for implant research? RECENT FINDINGS: The implant surfaces can be modified through patient-specific stem cells and plasma coatings, which may provide methods to improve osseointegration and sustainability of the implant...
April 20, 2018: Current Osteoporosis Reports
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