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Osseointegration

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https://www.readbyqxmd.com/read/28523312/an-evaluation-of-a-collagen-based-material-osseointegration
#1
Horia Octavian Manolea, Monica Mihaela CrăiŢoiu, LaurenŢiu Mogoantă, Ionela Teodora Dascălu, Alina Iren Moraru, Doriana Agop Forna, Răzvan MercuŢ
The aim of this study is to evaluate the osseointegration of a collagen-based material Alveoprotect, suitable for socket preservations, while preserving the vestibular bone lamella. This material is intended to be used in the field of implantology for smaller bone defects. Thus, 3-mm diameter experimental cavities were carried out on the calvaria and maxilla of 18 laboratory Wistar rats. The cavities were augmented with the collagen fleece Alveoprotect or left unaugmented as a control group and half of the laboratory animals were sacrificed after two months, and the other half after four months in order to evaluate in vivo the way in which the inserted material is osseointegrated...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28522447/photofunctionalised-ti6al4v-implants-enhance-early-phase-osseointegration
#2
R Yamauchi, T Itabashi, K Wada, T Tanaka, G Kumagai, Y Ishibashi
OBJECTIVES: Ultraviolet (UV) light-mediated photofunctionalisation is known to improve osseointegration of pure titanium (Ti). However, histological examination of titanium alloy (Ti6Al4V), which is frequently applied in orthopaedic and dental surgery, has not yet been performed. This study examined the osseointegration of photofunctionalised Ti6Al4V implants. METHODS: Ti and Ti6Al4V implants were treated with UV light, and the chemical composition and contact angle on the surfaces were evaluated to confirm photofunctionalisation...
May 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28521963/does-local-delivery-of-bisphosphonates-influence-the-osseointegration-of-titanium-implants-a-systematic-review
#3
REVIEW
M B Guimarães, T H Antes, M B Dolacio, D D Pereira, M Marquezan
The aim of this study was to systematically review the influence of the local delivery of bisphosphonates on the osseointegration of titanium implants in humans. A search of health sciences databases was performed (The Cochrane Library, Embase, PubMed MEDLINE, ISI Web of Knowledge, Scopus, and SIGLE OpenGrey), including articles published until October 2016. A total of 679 articles were identified. Following the removal of duplicates, 278 were screened by title and abstract. The complete texts of seven studies were read, and of these, three met the inclusion criteria...
May 15, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28521202/dual-growth-factor-loaded-nonmulberry-silk-fibroin-carbon-nanofiber-composite-3d-scaffolds-for-in%C3%A2-vitro-and-in%C3%A2-vivo-bone-regeneration
#4
Deboki Naskar, Ananta K Ghosh, Mahitosh Mandal, Piyali Das, Samit K Nandi, Subhas C Kundu
In recent years the potential application of nanocomposite biomaterials in tissue engineering field is gaining importance because of the combined features of all the individual components. A bottom-up approach is acquired in this study to recreate the bone microenvironment. The regenerated silk protein fibroin obtained from nonmulberry tropical tasar Antheraea mylitta species is reinforced with functionalized carbon nano fiber (CNF) and the composite sponges are fabricated using facile green aqueous based method...
May 10, 2017: Biomaterials
https://www.readbyqxmd.com/read/28518186/molecular-activity-and-osseointegration-after-single-dose-irradiation-an-in-vivo-study
#5
Jan Nyberg, Gisela Helenius, Christer Dahlin, Carina B Johansson, Omar Omar
PURPOSE: Irradiation results in deleterious effects on bone healing and integration of titanium implants. The impact of irradiation on osseointegration has been demonstrated in histologic studies, but the underlying molecular mechanisms have not been explored. This study aimed to investigate the effects of single-dose irradiation on the expression of biologic mediators crucial for inflammation, bone formation, and bone remodeling and to relate these molecular activities to implant stability after a 5-week healing period...
May 18, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28518183/preclinical-evaluation-of-a-crown-splinted-custom-root-shaped-implant
#6
Elias D Kontogiorgos, Poorva Gharpure, Eberechukwu O Iheanacho, Christopher J Gonzales, Lynne A Opperman
OBJECTIVE: To test whether a Maryland bridge-type splint provides adequate stability for a custom root-shaped implant to osseointegrate in a manner substantially equivalent to that of a threaded implant. METHODS: Six beagle dogs were subjected to intraoral impressions and cone beam scans that were used to fabricate custom root-shaped implants (RTIs) and crowns. Premolars in the mandible (P4) and in the maxilla (P3) were extracted, and 24 RTIs were immediately placed in extraction sockets...
May 18, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28512281/intricate-assessment-and-evaluation-of-long-term-implant-success-as-affected-by-clinicomicrobial-and-salivary-diagnostics-in-type-ii-diabetic-patients-a-longitudinal-study
#7
Deepti Raghav, Fawaz Alqahtani, Fatima J Albaker, Tushar V Bhagat, Zaheer Kola
INTRODUCTION: Replacement of missing teeth by dental implants is one of the most common methods employed these days. Because of significant advancement in the design of implants and modifications in the procedure of dental implant surgery, the survival rate of the dental implants has reached up to approximately 95%. Osseointegration is one of the important factors affecting the survival of dental implants. Apart from these, the body's physiologic alterations can also predispose the dental implants for failure...
May 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28511528/immediate-placement-of-zirconia-implants-in-teeth-with-periapical-lesions-a-case-report
#8
Nizar A Ahmed, Caroline Annette Jacob, Preetham Prasad Nittla
This case report records the replacement of two failed endodontically treated mandibular molars with one piece zirconia implants in a patient with metal hypersensitivity. The two molars were atraumatically extracted and curetted to remove any remnants of a periapical granuloma. Immediate implant placement with primary stability was achieved using one piece WhiteSky(®) Bredent zirconia implants which were restored after four months with a zirconia crown. One year follow up revealed successful osseointegration with optimal form and function...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28509828/modular-fluted-tapered-stems-in-aseptic-revision-total-hip-arthroplasty
#9
Matthew P Abdel, Umberto Cottino, Dirk R Larson, Arlen D Hanssen, David G Lewallen, Daniel J Berry
BACKGROUND: Modular fluted tapered stems have become the most commonly employed category of femoral component in revision hip arthroplasty in North America as a result of favorable early results and simplicity of use. Despite wide adoption, the majority of published data are limited to relatively small series with modest follow-up. The goal of the current study was to determine the success rate and factors associated with success, failure, and complications of the use of modular fluted tapered stems in aseptic revision total hip arthroplasties (THAs) in a large patient cohort...
May 17, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28503805/development-of-a-siyalon-glaze-for-improved-osteoconductivity-of-implantable-medical-devices
#10
Ryan M Bock, Elia Marin, Alfredo Rondinella, Francesco Boschetto, Tetsuya Adachi, Bryan J McEntire, B Sonny Bal, Giuseppe Pezzotti
The application of bioactive coatings onto orthopaedic appliances is commonly performed to compensate for the otherwise bioinert nature of medical devices and to improve their osseointegration. Calcium phosphates, hydroxyapatite (HAp), and bioglasses are commercially available for this purpose. Until recently, few other inorganic compounds have been identified with similar biofunctionality. However, silicon nitride (Si3 N4 ) has emerged as a new orthopaedic material whose unique surface chemistry also enhances osteoconductivity...
May 15, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28497067/the-influence-of-tribological-pairings-and-other-factors-on-migration-patterns-of-short-stems-in-total-hip-arthroplasty
#11
Thilo Floerkemeier, Michael Schwarze, Christof Hurschler, Jens Gronewold, Henning Windhagen, Gabriela von Lewinski, Stefan Budde
Over the last decade, the number of short stem total hip arthroplasty procedures has increased. Along with the possible benefits associated with short stems is a smaller implant-bone contact surface, which may have a negative influence on primary stability and impair osseointegration. Previous studies observed migration of short stems, especially within the first three months. The variables that influence migration in short stem hip implants remain unknown. Therefore, the purpose of this study was to associate the migration of short stems with its possible influencing variables...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28494046/traditional-postextractive-implant-site-preparation-compared-with-pre-extractive-interradicular-implant-bed-preparation-in-the-mandibular-molar-region-using-an-ultrasonic-device-a-randomized-pilot-study
#12
Antonio Scarano
PURPOSE: The immediate placement of single postextractive implants is increasing in the everyday clinical practice. Due to insufficient bone tissue volume, proper primary stability, essential for subsequent osseointegration, is sometimes not reached. The aim of this work was to compare two different approaches: implant bed preparation before and after root extraction. MATERIALS AND METHODS: Twenty-two patients of both sexes were selected who needed an implant-prosthetic rehabilitation of the fractured first mandibular molar or presented an untreatable endodontic pathology...
May 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28494038/role-of-metformin-in-reversing-the-negative-impact-of-hyperglycemia-on-bone-healing-around-implants-inserted-in-type-2-diabetic-rats
#13
Caroline Ribeiro Serrão, Marta Ferreira Bastos, Daniele Ferreira Cruz, Fernando de Souza Malta, Paolla Camacho Vallim, Poliana Mendes Duarte
PURPOSE: There is interest in establishing hypoglycemiant agents able to contain/revert the impact of diabetes mellitus on osseointegration. The purpose of this study was to assess the possible effect of metformin in reversing the negative effects of hyperglycemia on the healing of bone surrounding implants inserted in rats. MATERIALS AND METHODS: Rats (10 per group) were assigned to one of the following groups: DM group: type 2 diabetic rats deprived of metformin (M) treatment; MDM group: type 2 diabetic rats under M treatment (40 mg/kg/day, starting on the 15th day after implant placement); control group: nondiabetic rats without M treatment...
May 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28494036/epidemiology-of-implant-mortality-disparity-among-intraoral-positions-and-prosthesis-types
#14
Yong-Geun Choi, Steven E Eckert, Kyung Lhi Kang, Sang-Wan Shin, Young-Kyun Kim
PURPOSE: To examine the disparity of single-crown implant failure with a similar loss of the splinted prosthesis in differing anatomical locations while controlling for other demographic and clinical variables that may confound the relationship between prosthesis types and implant loss. MATERIALS AND METHODS: A multicenter retrospective cohort study was designed to include patients treated with dental implants from 2003 to 2014. The variables included age, sex, systemic disease, bone graft, implant placement date, position of dental implant, length of dental implant, diameter of dental implant, loading time, type of prosthesis, type of opposing occlusion, latest check date, and survival or loss of the dental implant...
May 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28494034/efficacy-of-local-and-systemic-statin-delivery-on-the-osseointegration-of-implants-a-systematic-review
#15
Sergio Varela Kellesarian, Mohammad D Al Amri, Abdulaziz A Al-Kheraif, Alexis Ghanem, Hans Malmstrom, Fawad Javed
PURPOSE: In indexed literature, a systematic review of the efficacy of statins in enhancing osseointegration is lacking. The aim of this systematic review was to assess the efficacy of local and systemic statin delivery on the osseointegration of implants. MATERIALS AND METHODS: To address the focused question, "Does local and systemic statin delivery affect osseointegration around implants?", indexed databases were searched from 1965 through November 2015 using various keywords...
May 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28493154/-transcutaneous-osseointegration-part-2
#16
EDITORIAL
Horst-Heinrich Aschoff
No abstract text is available yet for this article.
May 2017: Der Unfallchirurg
https://www.readbyqxmd.com/read/28492424/a-new-highly-hydrophilic-electrochemical-implant-titanium-surface-a-histological-and-biomechanical-in-vivo-study
#17
Paolo Trisi, Marco Berardini, Antonello Falco, Enrico Sandrini, Michele Podaliri Vulpiani
PURPOSE: The aim was to compare the osseointegration degree and secondary implant stability between implants with different surface treatments. MATERIALS AND METHODS: A novel electrochemical treatment was applied to modify the sandblasted and acid-etched surface (SLA) to obtain the new hydrophilic Feeling (FEL) surface presenting a highly soluble and homogenous film made of calcium and phosphorus nanocrystals. Twenty 3.8 × 10-mm dynamix implants (Cortex) were inserted in sheep iliac crests...
May 10, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28490947/preliminary-fabrication-and-characterization-of-electron-beam-melted-ti-6al-4v-customized-dental-implant
#18
Ravikumar Ramakrishnaiah, Abdulaziz Abdullah Al Kheraif, Ashfaq Mohammad, Darshan Devang Divakar, Sunil Babu Kotha, Sree Lalita Celur, Mohamed I Hashem, Pekka K Vallittu, Ihtesham Ur Rehman
The current study was aimed to fabricate customized root form dental implant using additive manufacturing technique for the replacement of missing teeth. The root form dental implant was designed using Geomagic™ and Magics™, the designed implant was directly manufactured by layering technique using ARCAM A2™ electron beam melting system by employing medical grade Ti-6Al-4V alloy powder. Furthermore, the fabricated implant was characterized in terms of certain clinically important parameters such as surface microstructure, surface topography, chemical purity and internal porosity...
May 2017: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/28482606/microarc-oxidation-coating-covered-ti-implants-with-micro-scale-gouges-formed-by-a-multi-step-treatment-for-improving-osseointegration
#19
Yixin Bai, Rui Zhou, Jianyun Cao, Daqing Wei, Qing Du, Baoqiang Li, Yaming Wang, Dechang Jia, Yu Zhou
The sub-microporous microarc oxidation (MAO) coating covered Ti implant with micro-scale gouges has been fabricated via a multi-step MAO process to overcome the compromised bone-implant integration. The as-prepared implant has been further mediated by post-heat treatment to compare the effects of -OH functional group and the nano-scale orange peel-like morphology on osseointegration. The bone regeneration, bone-implant contact interface, and biomechanical push-out force of the modified Ti implant have been discussed thoroughly in this work...
July 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28482507/a-review-of-tio2-nts-on-ti-metal-electrochemical-synthesis-functionalization-and-potential-use-as-bone-implants
#20
REVIEW
Nasser K Awad, Sharon L Edwards, Yosry S Morsi
Degenerative diseases of bone such as osteoarthritis and osteoporosis can lead to bone fractures and immobility, compromising quality of life. Titanium (Ti)-based implants have been intensively investigated for bone repair, with these implants, demonstrating improved outcomes compared to stainless steel and cobalt-chrome alloys, owing to superior mechanical properties and biocompatibility. However, osseointegration between the Ti-based implants and the surrounding bone tissue needs to be improved. Surface modification of Ti-based implants provides a solution for addressing this, with electrochemical anodization becoming a realistic approach for the fabrication of hierarchical structured for example nanotubes (NTs), implant surfaces...
July 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
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