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dentistry, dental implants, dental materials

T De Caluwé, C W J Vercruysse, H A Declercq, D Schaubroeck, R M H Verbeeck, L C Martens
OBJECTIVE: Bioactive glasses (BAG) form, in contrast to formerly used implant materials, a stable bond with tissues, especially bone, when implanted. Nowadays BAGs are often mixed with a cement/composite that hardens in situ to broaden its applications in dentistry or orthopedics. The bioactivity and biocompatibility of possible BAG candidates for BAG-cement/composite development were evaluated. METHODS: Two fluoride containing BAGs were tested: a Na(+)-containing (45S5F), based on the first commercial BAG, and a Na(+)-free BAG (CF9), with a higher Ca(2+) and PO4(3-) content...
September 26, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
P Schembri Wismayer, C Y K Lung, F Rappa, F Cappello, J Camilleri
Portland cement used in the construction industry improves its properties when wet. Since most dental materials are used in a moist environment, Portland cement has been developed for use in dentistry. The first generation material is mineral trioxide aggregate (MTA), used in surgical procedures, thus in contact with blood. The aim of this study was to compare the setting of MTA in vitro and in vivo in contact with blood by subcutaneous implantation in rats. The tissue reaction to the material was also investigated...
September 29, 2016: Scientific Reports
Wellington Luiz de Oliveira Rosa, Tiago Machado Silva, Giana da Silveira Lima, Adriana Fernandes Silva, Evandro Piva
OBJECTIVE: A systematic review was conducted to analyze Brazilian scientific and technological production related to the dental materials field over the past 50 years. MATERIAL AND METHODS: This study followed the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (Prisma) statement. Searches were performed until December 2014 in six databases: MedLine (PubMed), Scopus, LILACS, IBECS, BBO, and the Cochrane Library. Additionally, the Brazilian patent database (INPI - Instituto Nacional de Propriedade Industrial) was screened in order to get an overview of Brazilian technological development in the dental materials field...
May 2016: Journal of Applied Oral Science: Revista FOB
Lorenzo Drago, Monica Bortolin, Elena De Vecchi, Serse Agrappi, Roberto L Weinstein, Roberto Mattina, Luca Francetti
Infections due to biofilm-producing microorganisms are one of the main causes for the failure of dental implants. Increasing efforts have been made in order to develop new strategies to prevent biofilm formation. In this study, the biofilm development on a newly designed laser-modified titanium implant surface was evaluated and compared to that on conventional sandblasted titanium used in implant dentistry. The amount of biofilm produced by Staphylococcus aureus, Pseudomonas aeruginosa and Porphyromonas gingivalis isolated from peri-implantitis was assessed by a semi-quantitative spectrophotometric method and by confocal laser scanning microscopy...
October 2016: Journal of Chemotherapy
Rafaela Coray, Marco Zeltner, Mutlu Özcan
PURPOSE: The use of implants and their respective suprastructures to replace missing teeth has become a common therapeutic option in dentistry. Prior to their clinical application, all implant components have to demonstrate suitable durability in laboratory studies. Fatigue tests utilising cyclic loading typically simulate masticatory function in vitro. The objectives of this systematic review were to assess the loading conditions used for fatigue testing of implant abutments and to compare the fracture strength of different types of implant abutment and abutment-connection types after cyclic loading...
September 2016: Journal of the Mechanical Behavior of Biomedical Materials
M-A Saghiri, A Asatourian, F Garcia-Godoy, N Sheibani
BACKGROUND: In implant dentistry, bone substitute materials and barrier membranes are used in different treatments including guided bone regeneration (GBR), socket preservation, alveolar ridge augmentation, maxillary sinus elevation, and filling bony defects around the inserted dental implant. One of the most important factors in prognosis of treatments using these materials is the growth of new blood vessels in applied areas. Present review was performed to evaluate the effect of the bone-grafting and barrier membrane materials on angiogenesis events...
2016: Medicina Oral, Patología Oral y Cirugía Bucal
Natalia Mihailescu, G E Stan, L Duta, Mariana Carmen Chifiriuc, Coralia Bleotu, M Sopronyi, C Luculescu, F N Oktar, I N Mihailescu
Hydroxyapatite (HA) is a consecrated biomaterial for bone reconstruction. In the form of thin films deposited by pulsed laser technologies, it can be used to cover metallic implants aiming to increase biocompatibility and osseointegration rate. HA of animal origin (bovine, BHA) reinforced with MgF2 (2wt.%) or MgO (5wt.%) were used for deposition of thin coatings with improved adherence, biocompatibility and antimicrobial activity. For pulsed laser deposition experiments, a KrF* (λ=248nm, τFWHM≤25ns) excimer laser source was used...
February 2016: Materials Science & Engineering. C, Materials for Biological Applications
Keren Shemtov-Yona, Daniel Rittel
With the growing use of dental implants, the incidence of implants' failures grows. Late treatment complications, after reaching full osseointegration and functionality, include mechanical failures, such as fracture of the implant and its components. Those complications are deemed severe in dentistry, albeit being usually considered as rare, and therefore seldom addressed in the clinical literature. The introduction of dental implants into clinical practice fostered a wealth of research on their biological aspects...
2015: BioMed Research International
T A Mitsiadis, G Orsini, L Jimenez-Rojo
Repair of dental pulp and periodontal lesions remains a major clinical challenge. Classical dental treatments require the use of specialised tissue-adapted materials with still questionable efficacy and durability. Stem cell-based therapeutic approaches could offer an attractive alternative in dentistry since they can promise physiologically improved structural and functional outcomes. These therapies necessitate a sufficient number of specific stem cell populations for implantation. Dental mesenchymal stem cells can be easily isolated and are amenable to in vitro expansion while retaining their stemness...
2015: European Cells & Materials
Shariq Najeeb, Muhammad S Zafar, Zohaib Khurshid, Fahad Siddiqui
PURPOSE: Polyetheretherketone (PEEK) is a polymer that has many potential uses in dentistry. The aim of this review was to summarize the outcome of research conducted on the material for dental applications. In addition, future prospects of PEEK in the field of clinical dentistry have been highlighted. STUDY SELECTION: An electronic search was carried out via the PubMed (Medline) database using keywords 'polyetheretherketone', 'dental' and 'dentistry' in combination...
January 2016: Journal of Prosthodontic Research
Hariprasad Ananth, Vinaya Kundapur, H S Mohammed, M Anand, G S Amarnath, Sunil Mankar
Implants have been gaining popularity amongst the patients and frequently are being considered as a first treatment option. Modern dentistry is beginning to understand, realize, and utilize the benefits of biotechnology in health care. Study of material sciences along with the biomechanical sciences provides optimization of design and material concepts for surgical implants. Biocompatibility is property of implant material to show favorable response in given biological environment. In attempt to replace a missing tooth many biomaterials have been evolved as implants for many years in an effort to create an optimal interaction between the body and the implanted material...
September 2015: International Journal of Biomedical Science: IJBS
Andrea Corrado Profeta, Gian Marco Prucher
Bioactive-glass (B-G) is a material known for its favorable biological response when in contact with surrounding fibro-osseous tissues, due not only to an osteoconductive property, but also to an osteostimulatory capacity, and superior biocompatibility for use in human body. The objectives of this paper are to review recent studies on B-G in periodontal and implant therapy, describing its basic properties and mechanism of activity as well as discoursing about state of art and future perspective of utilization...
2015: Dental Materials Journal
Björn Klinge, Thomas Flemming, Jan Cosyn, Hugo De Bruyn, Barbara M Eisner, Margareta Hultin, Flemming Isidor, Niklaus P Lang, Bodil Lund, Jürg Meyle, Andrea Mombelli, Jose Manuel Navarro, Bjarni Pjetursson, Stefan Renvert, Henning Schliephake
INTRODUCTION: The assignment for this working group was to update the existing knowledge regarding factors considered being of special relevance for the patient undergoing implant therapy. This included areas where conflicting opinions exists since long or recently has been expressed, like the role of antibiotic prophylaxis in dental implant surgery and peri-implantitis. Also areas with growing interest and concern such as patient-reported outcome measures (PROMs) and health-economy was included in this review...
September 2015: Clinical Oral Implants Research
Teemu J Kinnari
PURPOSE OF REVIEW: The importance of bacterial biofilm in the human body, both when associated in chronic infections and as the default mode of microbial growth in the normal flora, has been understood during the last two decades. The word biofilm has recently entered into clinical vocabulary especially in dentistry, and oral hygienists have begun to talk of oral or dental biofilm instead of oral plaque. Biofilm presence has been demonstrated widely in otorhinolaryngology, related to chronic infections of middle ear, paranasal sinuses and lymphoid tissue of adenoids and tonsils and to implanted materials; however, less literature exists considering the implication of biofilm to laryngeal infections or head and neck cancer...
December 2015: Current Opinion in Otolaryngology & Head and Neck Surgery
Andreas Dominik Schwitalla, Tobias Spintig, Ilona Kallage, Wolf-Dieter Müller
OBJECTIVES: The high-performance thermoplastic polymer PEEK (poly-ether-ether-ketone) is used as alternative implant material to metals since 1998 in many medical fields due to its bone-like mechanical properties. These iso-elastic characteristics of PEEK lead to the assumption, that it could represent a viable alternative to conventional materials also in the field of dentistry. Therefore the mechanical properties of different PEEK-compounds should be eavuated vie the three-point bending test...
November 2015: Dental Materials: Official Publication of the Academy of Dental Materials
Soon-Jeong Jeong, Guanlin Wang, Baik-Dong Choi, Young-Hyun Hwang, Byung-Hoon Kim, Yeong-Mu Ko, Moon-Jin Jeong
An appropriate interaction between implanted materials and the surrounding tissue is essential for successful implantation. Titanium (Ti) and some of its alloys have been used in dentistry and orthopedics as a substitutive material for hard tissue, such as teeth or natural bone. Nevertheless, metal ions released from titanium and alloy implants have adverse biological effects on biological tissues or cells. Secretory leukocyte protease inhibitor (SLPI) promotes cell migration, proliferation and wound healing...
January 2015: Journal of Nanoscience and Nanotechnology
Ronaldo Hirata, Estevam A Bonfante, Lucas S Machado, Nick Tovar, Paulo G Coelho
PURPOSE: To investigate the effect of core dental implant materials supporting single crowns on the probability of survival and failure modes. MATERIALS AND METHODS: Thirty-six standard external-hex titanium implants (4.0 mm in diameter) were selected to restore single crowns and divided into two groups according to core material: commercially pure grade 2 titanium (G2) and grade 5 titanium-aluminum-vanadium alloy (Ti-6Al-4V) (G5). Abutments were screwed to the implants, and standardized maxillary central incisor metal crowns were cemented and subjected to step-stress accelerated life testing in water...
July 2015: International Journal of Oral & Maxillofacial Implants
Andy H Choi, Sophie Cazalbou, Besim Ben-Nissan
During the last decade, there has been a major increase in the interest of nanostructured materials in advanced technologies for biomedical and dental clinical applications. Nanostructured materials are associated with a variety of applications within the dental and biomedical field, for example nanoparticles in drug delivery systems and nanostructured scaffolds in tissue engineering. More importantly, nanotechnology has also been linked with the modification of surface properties of synthetic implants in an attempt to improve their bioactivity, reliability and protection from the release of harmful or unnecessary metal ions...
2015: Frontiers of Oral Biology
Elisa Fernandez-Garcia, Xi Chen, Carlos F Gutierrez-Gonzalez, Adolfo Fernandez, Sonia Lopez-Esteban, Conrado Aparicio
OBJECTIVE: Titanium materials have been functionalized with biomolecules as a modern strategy to incorporate bioactive motifs that will expand and improve their biomedical applications. Here, we have biofunctionalized biomaterials based on zirconia of much interest for dentistry: the widely used bioceramic 3Y-TZP and a newly developed 3Y-TZP/Ti biocermet. METHODS: The biosurfaces were activated, silanized, and functionalized with coatings made of oligopeptides. Surface activation by plasma or alkaline-etching was optimized...
September 2015: Journal of Dentistry
Y-Y Wang, X Chatzistavrou, D Faulk, S Badylak, L Zheng, S Papagerakis, L Ge, H Liu, P Papagerakis
The aim of this study was the fabrication and evaluation of a novel bioactive and bactericidal material, which could have applications in dentistry by supporting tissue regeneration and killing oral bacteria. Our hypothesis was that a new scaffold for pulp-dentin tissue engineering with enhanced antibacterial activity could be obtained by associating extracellular matrix derived from porcine bladder with an antibacterial bioactive glass. Our study combines in vitro approaches and ectopic implantation in scid mice...
2015: European Cells & Materials
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