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https://www.readbyqxmd.com/read/29223071/bioactive-potential-of-silica-coatings-and-its-effect-on-the-adhesion-of-proteins-to-titanium-implants
#1
F Romero-Gavilan, N Araújo-Gomes, A M Sánchez-Pérez, I García-Arnáez, F Elortza, M Azkargorta, J J Martín de Llano, C Carda, M Gurruchaga, J Suay, I Goñi
There is an ever-increasing need to develop dental implants with ideal characteristics to achieve specific and desired biological response in the scope of improve the healing process post-implantation. Following that premise, enhancing and optimizing titanium implants through superficial treatments, like silica sol-gel hybrid coatings, are regarded as a route of future research in this area. These coatings change the physicochemical properties of the implant, ultimately affecting its biological characteristics...
December 6, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29209690/prosthetic-rehabilitation-involving-the-use-of-implants-following-a-fibula-free-flap-reconstruction-in-the-treatment-of-osteosarcoma-of-the-maxilla-a-case-report
#2
E Brauner, A Quarato, F De Angelis, G Pompa, S Jamshir, V Valentini, S Di Carlo
INTRODUCTION: Osteosarcoma is an aggressive primary bone tumor composed of connective tissue cells directly producing osteoid and bone. Prosthetic rehabilitations in post-oncological patients after bone reconstruction are not substantially different than those of patients affected by severe atrophy of upper or lower jaw after bone reconstruction. The treatment for patients with a malignant neoplasia of the oral cavity requires multidisciplinary approach by a team of different specialists that follow the patient through the phases of diagnosis, therapy and oral rehabilitation...
November 2017: La Clinica Terapeutica
https://www.readbyqxmd.com/read/29208401/survival-rates-from-fracture-of-endodontically-treated-premolars-restored-with-full-coverage-crowns-or-direct-resin-composite-restorations-a-retrospective-study
#3
Warattama Suksaphar, Danuchit Banomyong, Titalee Jirathanyanatt, Yaowaluk Ngoenwiwatkul
INTRODUCTION: The aim of the present study was to compare the survival rates against fracture of premolar endodontically treated teeth (ETT) restored with resin composite or crowns and to identify risk factors associated with the fracture. METHODS: Data from dental records and radiographs of premolar ETT with postendodontic restorations (ie, resin composite or crowns) were collected between 2012 and 2016 and selected following selected inclusion and exclusion criteria...
December 2, 2017: Journal of Endodontics
https://www.readbyqxmd.com/read/29208311/bonding-strategies-for-mih-affected-enamel-and-dentin
#4
Norbert Krämer, Ngoc-Han Nana Bui Khac, Susanne Lücker, Vitus Stachniss, Roland Frankenberger
OBJECTIVES: Aim of the present study was to evaluate resin composite adhesion to dental hard tissues affected by molar incisor hypomineralisation (MIH). METHODS: 94 freshly extracted human molars and incisors (53 suffering MIH) were used. 68 teeth (35 with MIH) were used for μ-TBS tests in enamel and dentin, 26 (18 with MIH) for qualitative evaluation. Specimens were bonded with Clearfil SE Bond, Scotchbond Universal, and OptiBond FL. For MIH affected enamel, additional OptiBond FL groups with NaOCl and NaOCl+Icon were investigated...
December 2, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29207837/fracture-resistance-of-endodontically-treated-teeth-restored-with-biodentine-resin-modified-gic-and-hybrid-composite-resin-as-a-core-material
#5
Dayalan Subash, Krishnamma Shoba, Shibu Aman, Srinivasan Kumar Indu Bharkavi, Vijayan Nimmi, Radhakrishnan Abhilash
Introduction: The restoration of a severely damaged tooth usually needs a post and core as a part of treatment procedure to provide a corono - radicular stabilization. Biodentine is a class of dental material which possess high mechanical properties with excellent biocompatibility and bioactive behaviour. The sealing ability coupled with optimum physical properties could make Biodentine an excellent option as a core material. Aim: The aim of the study was to determine the fracture resistance of Biodentine as a core material in comparison with resin modified glass ionomer and composite resin...
September 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/29204275/fractography-of-clinically-fractured-implant-supported-dental-computer-aided-design-and-computer-aided-manufacturing-crowns
#6
Ulrich Lohbauer, Renan Belli, Marco S Cune, Ulf Schepke
Today, a substantial part of the dental crown production uses computer-aided design and computer-aided manufacturing (CAD/CAM) technology. A recent step in restorative dentistry is the replacement of natural tooth structure with pre-polymerized and machined resin-based methacrylic polymers. Recently, a new CAD/CAM composite was launched for the crown indication in the load-bearing area, but the clinical reality forced the manufacturer to withdraw this specific indication. In parallel, a randomized clinical trial of CAD/CAM composite crowns luted on zirconia implant abutments revealed a high incidence of failure within the first year of service...
2017: SAGE open medical case reports
https://www.readbyqxmd.com/read/29203742/neutrophil-bactericidal-activity-through-the-stages-of-placement-of-different-dental-implants-depending-on-their-chemical-composition
#7
Mariia O Faustova, Maiia M Ananieva, Yaroslav O Basarab, Galina A Loban'
INTRODUCTION: The analysis of data provided by implant system manufacturers has demonstrated that implants, i.e. parts screwed into the bone, are of different chemical composition of the implant. Sometimes they have little amount of metal contaminants,which are not biologically passive. THE AIM: To explore the effects produced by dental titanium implants containing metal contaminants on the stimulation of antimicrobial properties of neutrophils. MATERIAL AND METHODS: A total of 24 patients who had from 1 to 4 titanium implants with different chemical compositions were subjected to the comprehensive check-up to this end...
2017: Wiadomości Lekarskie: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29201060/osteogenic-differentiation-of-hdpscs-on-biogenic-bone-apatite-thin-films
#8
Michele Bianchi, Alessandra Pisciotta, Laura Bertoni, Matteo Berni, Alessandro Gambardella, Andrea Visani, Alessandro Russo, Anto de Pol, Gianluca Carnevale
A previous study reported the structural characterization of biogenic apatite (BAp) thin films realized by a pulsed electron deposition system by ablation of deproteinized bovine bone. Thin films annealed at 400°C exhibited composition and crystallinity degree very close to those of biogenic apatite; this affinity is crucial for obtaining faster osseointegration compared to conventional, thick hydroxyapatite (HA) coatings, for both orthopedics and dentistry. Here, we investigated the adhesion, proliferation, and osteogenic differentiation of human dental pulp stem cells (hDPCS) on as-deposited and heat-treated BAp and stoichiometric HA...
2017: Stem Cells International
https://www.readbyqxmd.com/read/29199458/effect-of-brief-periodic-fluoride-treatments-on-the-virulence-and-composition-of-a-cariogenic-biofilm
#9
Santosh Pandit, Ji-Eun Jung, Hyeon-Mi Choi, Jae-Gyu Jeon
The present study investigated the effect of periodic 1-min fluoride treatments on Streptococcus mutans biofilms and then determined the relationship between anti-biofilm activity, treatment frequency, and fluoride concentration using a linear-fitting procedure. S. mutans biofilms were periodically treated (1-min/treatment) with fluoride during biofilm formation and analyzed using microbiological methods, confocal microscopy, and real-time PCR. The results indicated that reductions in the dry weight and acidogenicity of biofilms due to periodic fluoride treatment occurred in a concentration dependent manner...
December 4, 2017: Biofouling
https://www.readbyqxmd.com/read/29199007/can-pulpal-floor-debonding-be-detected-from-occlusal-surface-displacement-in-composite-restorations
#10
João Batista Novaes, Elissa Talma, Estevam Barbosa Las Casas, Wondwosen Aregawi, Lauren Wickham Kolstad, Sue Mantell, Yan Wang, Alex Fok
OBJECTIVES: Polymerization shrinkage of resin composite restorations can cause debonding at the tooth-restoration interface. Theory based on the mechanics of materials predicts that debonding at the pulpal floor would half the shrinkage displacement at the occlusal surface. The aim of this study is to test this theory and to examine the possibility of detecting subsurface resin composite restoration debonding by measuring the superficial shrinkage displacements. METHODS: A commercial dental resin composite with linear shrinkage strain of 0...
November 30, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29197431/measuring-adherence-to-evidence-based-clinical-practice-guidelines
#11
Richard Clark, Utsana Tonmukayakul, Yvonne Mangan, Michael Smith, Mark Gussy, David Manton, Denise Bailey, Hanny Calache
OBJECTIVES: Dental Health Services Victoria publishes evidence-based clinical practice guidelines (CPGs) to assist public oral health practitioners to provide high-quality dental care. How well these CPGs are implemented into practice is unknown. The aim of this study was to assess adherence to selected CPGs. METHODS: An electronic auditing tool was developed using clinical indicators derived for "stainless steel crown (SSC)," "restorative care for children under general anesthetic (GA)," and "direct restorative materials" CPG...
December 2017: Journal of Evidence-based Dental Practice
https://www.readbyqxmd.com/read/29197101/a-biocompatible-decellularised-pulp-scaffold-for-regenerative-endodontics
#12
M Matoug-Elwerfelli, M S Duggal, H Nazzal, F Esteves, E Raïf
AIM: To investigate the feasibility of decellularising the entire dental pulp using a mild treatment protocol to develop a decellularised biological extracellular matrix scaffold for use in regenerative endodontic procedures. METHODOLOGY: Decellularised human dental pulps were assessed using histological and immunohistochemical methods, scanning electron microscope and DNA quantification assay. Cytotoxicity assays to determine decellularised scaffold biocompatibility were also performed...
December 1, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/29195821/early-implant-placement-for-a-patient-with-ectodermal-dysplasia-thirteen-years-of-clinical-care
#13
Lisa A Knobloch, Peter E Larsen, Paola C Saponaro, Emilie L'Homme-Langlois
Patients with ectodermal dysplasia have abnormalities of 2 or more structures that originate from the ectoderm. The oral manifestations often include the congenital absence of teeth and malformed teeth. This clinical report describes the interdisciplinary care from childhood through the definitive dental rehabilitation completed at skeletal maturation to replace the missing teeth in a patient with ectodermal dysplasia. Treatment began at 9 years of age with an implant-assisted mandibular overdenture to improve function and replace the missing mandibular teeth...
November 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29193676/poly-amido-amine-dendrimer-and-dental-adhesive-with-calcium-phosphate-nanoparticles-remineralized-dentin-in-lactic-acid
#14
Kunneng Liang, Shimeng Xiao, Michael D Weir, Chongyun Bao, Huaibing Liu, Lei Cheng, Xuedong Zhou, Jiyao Li, Hockin H K Xu
Patients with dry mouth often have an acidic oral environment lacking saliva to provide calcium (Ca) and phosphate (P) ions. There has been no report on tooth remineralization in acidic pH4 and CaP ion-lacking solutions. The objective of this study was to develop a novel method of combining poly(amido amine) (PAMAM) with adhesive containing nanoparticles of amorphous calcium phosphate (NACP) for dentin remineralization in pH4 and CaP-lacking solution for the first time. Demineralized dentin was tested in four groups: (1) dentin control, (2) dentin with PAMAM, (3) dentin with NACP adhesive, (4) dentin with PAMAM + NACP adhesive...
November 28, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29192623/color-recovery-effect-of-different-bleaching-systems-on-a-discolored-composite-resin
#15
P Gul, O T Harorlı, I B Ocal, Z Ergin, C Barutcigil
BACKGROUND AND PURPOSE: Discoloration of resin-based composites is a commonly encountered problem, and bleaching agents may be used for the therapy of the existing discoloration. The purpose of this study was to investigate in vitro color recovery effect of different bleaching systems on the heavily discolored composite resin. MATERIALS AND METHODS: Fifty disk-shaped dental composite specimens were prepared using A2 shade nanohybrid universal composite resin (3M ESPE Filtek Z550, St...
October 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29186927/estimating-free-and-added-sugar-intakes-in-new-zealand
#16
Rachael Kibblewhite, Alice Nettleton, Rachael McLean, Jillian Haszard, Elizabeth Fleming, Devonia Kruimer, Lisa Te Morenga
The reduction of free or added sugar intake (sugars added to food and drinks as a sweetener) is almost universally recommended to reduce the risk of obesity-related diseases and dental caries. The World Health Organisation recommends intakes of free sugars of less than 10% of energy intake. However, estimating and monitoring intakes at the population level is challenging because free sugars cannot be analytically distinguished from naturally occurring sugars and most national food composition databases do not include data on free or added sugars...
November 27, 2017: Nutrients
https://www.readbyqxmd.com/read/29184637/preliminary-study-of-a-novel-dental-hand-instrument-for-restorative-procedures
#17
Les Kalman, Allen Xian
Background. There is no clear consensus on operative hand instrumentation. In general, there is one hand instrument that completes one task. Consequently, numerous instruments are required for the placement, shaping and carving of a restoration. This reduces clinical efficiency, increases cost and may generate frustration. Methods. A novel dental hand instrument has been developed. The instrument (GTI) can complete several tasks. The instrument was assessed in a laboratory setting with amalgam, composite and glass-ionomer restorations on dentoform teeth...
2017: Journal of Dental Research, Dental Clinics, Dental Prospects
https://www.readbyqxmd.com/read/29179009/osteoblastic-cell-behaviour-on-modified-titanium-surfaces
#18
Magdalena Lukaszewska-Kuska, Przemysław Wirstlein, Radomir Majchrowski, Barbara Dorocka-Bobkowska
INTRODUCTION: The surfaces of endoosseous dental implants have been subjected to numerous modifications in order to create a surface which can provide rapid bone healing and fast implant loading. Each modification has involved changes to the chemical composition and topography of the surfaces which have resulted in various biological reactions to the implanted material. AIM: The aim of this study was to evaluate the surface topography and chemistry of various modified titanium surfaces: (1) machined surface (MA), (2) alumina-blasted (Al2O3), (3) alumina-blasted and acid-etched (Al2O3 DE), (4) hydroxyapatite/tricalcium phosphate grit-blasted (HA/TCP) and (5) hydroxyapatite/tricalcium phosphate grit-blasted and acid-etched (HA/TCP DE) and to analyse the effects of surface roughness, and chemical composition on human osteoblast vitality, differentiation, morphology and orientation...
November 22, 2017: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/29178733/the-role-of-adhesive-materials-and-oral-biofilm-in-the-failure-of-adhesive-resin-restorations
#19
REVIEW
Roberto Pinna, Paolo Usai, Enrica Filigheddu, Franklin Garcia-Godoy, Egle Milia
PURPOSE: To critically discuss adhesive materials and oral cariogenic biofilm in terms of their potential relevance to the failures of adhesive restorations in the oral environment. METHODS: The literature regarding adhesive restoration failures was reviewed with particular emphasis on the chemistry of adhesive resins, weakness in dentin bonding, water fluids, cariogenic oral biofilm and the relations that influence failures. Particular attention was paid to evidence derived from clinical studies...
October 2017: American Journal of Dentistry
https://www.readbyqxmd.com/read/29178706/stress-distribution-of-bulk-fill-resin-composite-in-class-ii-restorations
#20
Pietro Ausiello, Stefano Ciaramella, Franklin Garcia-Godoy, Massimo Martorelli, Roberto Sorrentino, Antonio Gloria
PURPOSE: To study the influence of the resin bonding layer thickness and the bulk filling material stiffness in adhesive class II mesio-occlusal-distal (MOD) restorations using numerical finite element analysis (FEA). METHODS: Four 3D-FE models of teeth restored with different filling material stiffness and resin bonding layer thickness were built-up and analyzed. The 3D model of a sound lower molar was also analyzed and compared with restored ones. The tooth tissues (enamel, dentin), dental restoration and bolus on the occlusal surface, was divided into 3D solid CTETRA elements with four grid points...
August 2017: American Journal of Dentistry
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