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Implant supported prosthesis

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https://www.readbyqxmd.com/read/29341975/validation-of-a-simplified-implant-retained-cantilever-fixed-prosthesis
#1
João Paulo Mendes Tribst, Vinícius Anéas Rodrigues, Alexandre Luiz Souto Borges, Dimas Rennó de Lima, Renato Sussumu Nishioka
PURPOSE: To evaluate the stress and strain generated in a fixed four-element prosthesis under the application of axial and nonaxial loads using a simplified implant-supported fixed prosthesis model. MATERIALS AND METHODS: A 3-dimensional model was constructed containing 3 implants with a conventional anatomical prosthesis (G1). The second model with the same implant system received the simplified prosthesis (G2). A load of 300 N was applied at an axial point and a nonaxial point through finite element analysis software...
January 16, 2018: Implant Dentistry
https://www.readbyqxmd.com/read/29325103/twenty-year-experience-with-stentless-biological-aortic-valve-and-root-replacement-informing-patients-of-risks-and-benefits
#2
Adriaan W Schneider, Hein Putter, Mark G Hazekamp, Eduard R Holman, Eline F Bruggemans, Michel I M Versteegh, Martin J Schalij, Rens R B Varkevisser, Robert J M Klautz, Jerry Braun
OBJECTIVES: The aim of this study was to provide predictive data on the performance of the Freestyle stentless bioprosthesis that can be used to support and improve the shared decision-making process of prosthetic valve choice for aortic valve replacement. METHODS: Between 1993 and 2014, 604 patients received the Freestyle stentless bioprosthesis (143 subcoronary, 58 root inclusion and 403 full-root replacement). Perioperative data were collected retrospectively, and follow-up data were collected prospectively from 2015...
January 6, 2018: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/29318899/influence-of-transmucosal-height-in-abutments-of-single-and-multiple-implant-supported-prostheses-a-non-linear-three-dimensional-finite-element-analysis
#3
Eduardo Borie, Eduardo Leal, Iara Augusta Orsi, Carlos Salamanca, Fernando José Dias, Benjamin Weber
The aim of this study was to analyze the influence of three different transmucosal heights of the abutments in single and multiple implant-supported prostheses through the finite element method. External hexagon implants, MicroUnit, and EsthetiCone abutments were scanned and placed in an edentulous maxillary model obtained from a tomography database. The simulations were divided into two groups: (1) one implant with 3.75 × 10 mm placed in the upper central incisor, simulating a single implant-supported fixed prosthesis with an EsthetiCone abutment; and (2) two implants with 3...
January 10, 2018: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/29310880/the-hemi-engaging-fixed-dental-implant-prosthesis-a-technique-for-improved-stability-and-handling
#4
Todd R Schoenbaum, Richard G Stevenson, Eric Balinghasay
Clinicians commonly contend that the screw-retained, implant-supported fixed dental prosthesis (FDP) should be fabricated with all nonengaging abutments to allow for the inherent nonparallelism of the implants and the inability of the abutment connections to draw together during insertion and removal. The problem with a fully nonengaging FDP is difficulty in handling and more strain on the abutment screws, ultimately leading to increased rates of breakage and loosening. The hemi-engaging FDP design regains much of the advantage afforded by the internal connection and improves prosthetic handing both clinically and in the laboratory...
January 5, 2018: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29310359/natural-teeth-retained-splint-based-on-a-patient-specific-3d-printed-mandible-used-for-implant-surgery-and-vestibuloplasty-a-case-report
#5
Helin Xing, Jinshuang Wu, Lei Zhou, Sefei Yang
RATIONALE: With respect to improving the quality of oral rehabilitation, the management of keratinized mucosa is as important as bone condition for implant success. To enhance this management, a natural teeth-retained splint based on a patient-specific 3-dimensional (3D) printed mandible was used in vestibuloplasty to provide sufficient keratinized mucosa around dental implants to support long-term implant maintenance. PATIENT CONCERNS: A 28-year-old male patient had a fracture of the anterior andible 1 year ago, and the fracture was treated with titanium...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29303859/three-dimensional-radiological-assessment-of-alveolar-bone-volume-preservation-using-bovine-bone-xenograft
#6
Ali Al Qabbani, Sausan Al Kawas, Noor Hayati A Razak, Saad Wahby Al Bayatti, Hamid Hammad Enezei, A Rani Samsudin, Suzina Sheikh Ab Hamid
INTRODUCTION: Alveolar bone is critical in supporting natural teeth, dental implants as well as a removable and fixed prosthesis. Alveolar bone volume diminishes when its associated natural tooth is lost. OBJECTIVE: The aim of this study is to evaluate the effectiveness of bovine bone granules on alveolar bone socket augmentation for ridge preservation following atraumatic tooth extraction. MATERIALS AND METHODS: Twenty medically fit patients (12 males and 8 females aged between 18 and 40 years) who needed noncomplicated tooth extraction of 1 mandibular premolar tooth were divided randomly and equally into 2 groups...
January 4, 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29302292/dental-implants-placement-in-paranoid-squizofrenic-patient-with-obsessive-compulsive-disorder-a-case-report
#7
Lizett Castellanos-Cosano, José-Ramón Corcuera-Flores, María Mesa-Cabrera, José Cabrera-Domínguez, Daniel Torres-Lagares, Guillermo Machuca-Portillo
Background: Paranoid schizophrenia is a mental illness that involves no observable anatomical alteration. Main characteristic affects the personality of the individual, as well as areas of his own psychology. Case Report: A 33-year-old man with paranoid schizophrenia and obsessive-compulsive disorder in treatment with Haloperidol, Oxcarbazepine, Olanzapine and Seroquel is presented. Dental exploration showed widespread decay mostly cervical with numerous root fragments, agenesis of lateral incisors, impacted wisdom teeth, missing teeth and malocclusion...
November 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/29300207/stress-distribution-in-splinted-and-unsplinted-implant-supported-maxillary-overdentures-a-3d-finite-element-analysis
#8
Allahyar Geramy, Sareh Habibzadeh
INTRODUCTION: This study was accomplished to assess the biomechanical state of splinting in implant-supported maxillary overdentures. MATERIALS AND METHODS: Two models of maxillary overdentures were designed in SolidWorks 2011. The first model included 4 separate implants and ball abutments, whereas the second one included 4 splinted implants connected with a bar. Evaluation was performed in ANSYS Workbench software with 200 N load applied at the molar-premolar region, bilaterally...
January 3, 2018: Implant Dentistry
https://www.readbyqxmd.com/read/29281613/clinical-evaluation-of-complications-in-implant-supported-dentures-a-4-year-retrospective-study
#9
Sabiha Zelal Ülkü, Filiz Acun Kaya, Ersin Uysal, Belgin Gulsun
BACKGROUND Implants that can be used in the prosthetic rehabilitation of full and partial edentulous patients are now frequently used due to advances in dentistry. Despite advanced methods of applications, failures and complications can still be seen. The aim of our study was to evaluate clinical prosthetic values and complications that occurred during 4-year follow-up in implant-supported restorations. MATERIAL AND METHODS This retrospective study included 40 patients who received oral rehabilitation with an implant-supported prosthesis...
December 27, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29279686/abutment-misfit-in-implant-supported-prostheses-manufactured-by-casting-technique-an-integrative-review
#10
REVIEW
Lorena M S Pereira, Mariane B Sordi, Ricardo S Magini, Antônio R Calazans Duarte, Júlio C M Souza
The aim of this study was to perform an integrative review of the literature on the clinically usual prosthesis-abutment misfit over implant-supported structures manufactured by conventional casting technique. The present integrative review used the PRISMA methodology. A bibliographical search was conducted on the following electronic databases: MEDLINE/PubMed (National Library of Medicine), Scopus (Elsevier), ScienceDirect (Elsevier), Web of Science (Thomson Reuters Scientific), Latin American and Caribbean Center on Health Sciences Information (BIREME), and Virtual Health Library (BVS)...
October 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/29249883/effect-of-joining-the-sectioned-implant-supported-prosthesis-on-the-peri-implant-strain-generated-in-simulated-mandibular-model
#11
Ipsha Singh, K Chandrasekharan Nair, Jayakar Shetty
Aim: The aim of this study is to evaluate the strain developed in simulated mandibular model before and after the joining of an implant-supported screw-retained prosthesis by different joining techniques, namely, arc welding, laser welding, and soldering. Materials and Methods: A specimen simulating a mandibular edentulous ridge was fabricated in heat-cured acrylic resin. 4-mm holes were drilled in the following tooth positions; 36, 33, 43, 46. Implant analogs were placed in the holes...
October 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/29249880/a-comparative-evaluation-of-chewing-efficiency-masticatory-bite-force-and-patient-satisfaction-between-conventional-denture-and-implant-supported-mandibular-overdenture-an-in-vivo-study
#12
Arjun Jawahar Sharma, Rahul Nagrath, Manesh Lahori
Purpose: The purpose of this within-subject crossover clinical trial was to compare and evaluate the chewing efficiency, masticatory bite force, and patient satisfaction with conventional dentures and two implant-retained mandible overdentures after 4 weeks of usage. Method: This within-subject crossover clinical trial was carried out in the Department of Prosthodontics in K.D Dental College and Hospital. A total 15 patients were selected for the study. To report the changes in chewing efficiency by chewing 6gms of peanuts with 40 chewing strokes and comparing the particle size of the chewed material between two implant retained mandibular overdenture with that of conventional denture using micro vu excel gantry type visual measurement machine...
October 2017: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/29244887/carbon-fiber-framework-for-full-arch-implant-supported-fixed-dental-prostheses-supporting-resin-based-composite-and-lithium-disilicate-ceramic-crowns-case-report-and-description-of-features
#13
Giuseppe Castorina
This case report presents a new approach for shock-absorbing carbon-fiber composite frameworks for full-arch implant-supported fixed dental prostheses supporting resin-based and lithium disilicate ceramic crowns. It describes the characteristics of the materials used, the procedures for implementing the framework, and the requirements to achieve the best mechanical and clinical properties. The result is a full-arch prosthesis with masticatory load shock-absorption capacities, chemical bonding between materials, good esthetics, and wear similar to natural enamel...
December 15, 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29242989/prosthetic-supply-of-facial-defects-long-term-experience-and-retrospective-analysis-on-99-patients
#14
Giorgos Papaspyrou, Cansel Yildiz, Victoria Bozzato, Christopher Bohr, Mathias Schneider, Dietmar Hecker, Bernhard Schick, Basel Al Kadah
INTRODUCTION: Defects in the head region may be caused by tumour treatments, injuries, as well as congenital malformations. The restoration of these defects that can be performed through reconstructive plastic surgery and/or prosthetic surgery occupies a high priority in the physical and psychological rehabilitation of the patient. The present study reports on long-term experience in supply of facial prosthesis. MATERIALS AND METHODS: The medical records of 99 patients, who had been supplied with custom-made facial prostheses between 2001 and 2011, were evaluated retrospectively...
December 14, 2017: European Archives of Oto-rhino-laryngology
https://www.readbyqxmd.com/read/29235192/influence-of-implant-position-in-implant-assisted-removable-partial-denture-a-three-dimensional-finite-element-analysis
#15
Octavi Ortiz-Puigpelat, Aida Lázaro-Abdulkarim, Javier-María de Medrano-Reñé, Jordi Gargallo-Albiol, Josep Cabratosa-Termes, Federico Hernández-Alfaro
PURPOSE: To determine the ideal position of a dental implant to assist a posterior extended partial removable dental prosthesis (PRDP), through stress values, displacement values, and deformation of periodontal ligament (PDL). MATERIALS AND METHODS: A finite element analysis of different implant positions was analyzed using a 3D mandible model from a human patient. Test models were created: model A (implant in second molar area), model B (implant in the first molar area), and model C (implant in premolar area)...
December 13, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/29234749/sinus-lift-grafting-with-anorganic-bovine-bone-vs-50-autologous-bone-mixed-with-50-anorganic-bovine-bone-2-years-after-loading-results-from-a-randomised-controlled-trial
#16
Silvio Mario Meloni, Sascha Alekshander Jovanovic, Milena Pisano, Erta Xhanari, Giacomo De Riu, Antonio Tullio, Marco Tallarico
PURPOSE: To compare the outcome of implants inserted in maxillary sinuses augmented with anorganic bovine bone (ABB) grafts vs mixed 50% ABB and 50% autologous bone graft, using a lateral window approach. MATERIALS AND METHODS: This study was designed as a randomised controlled trial of parallel groups. Patients in need of an implant-supported prosthesis in a maxillary posterior area with a residual alveolar bone height no greater than 4 mm (range 0-4 mm) were recruited for lateral sinus grafting...
2017: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/29234748/early-loading-of-maxillary-titanium-implants-with-a-nanostructured-calcium-incorporated-surface-xpeed-5-year-results-from-a-multicentre-randomised-controlled-trial
#17
Giorgio Gastaldi, Maria Gabriella Grusovin, Pietro Felice, Carlo Barausse, Daniela Rita Ippolito, Marco Esposito
PURPOSE: To evaluate clinical safety and effectiveness of a novel calcium-incorporated titanium implant (Xpeed, MegaGen Implant Co. Limited, Gyeongbuk, South Korea). MATERIALS AND METHODS: In total, 60 patients were randomised to receive one to six titanium implants in the maxilla with either calcium-incorporated (Xpeed) or control resorbable blasted media (RBM) surfaces, according to a parallel group design at two centres. Implants were submerged and exposed at three different endpoints in equal groups of 20 patients at 12, 10 and 8 weeks, respectively...
2017: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/29234746/short-implants-as-an-alternative-to-crestal-sinus-lift-a-3-year-multicentre-randomised-controlled-trial
#18
Giorgio Gastaldi, Pietro Felice, Roberto Pistilli, Carlo Barausse, Anna Trullenque-Eriksson, Marco Esposito
PURPOSE: To evaluate the efficacy of short (5 or 6 mm long) dental implants vs 10 mm or longer implants placed in crestally lifted sinuses. MATERIALS AND METHODS: Twenty partially edentulous patients with 5 to 7 mm of residual crestal height and at least 7 mm thickness below the maxillary sinuses as measured on computed tomography scans were randomised according to a parallel group design to receive either one to two 5 or 6 mm long implants (10 patients) or 10 mm long implants (10 patients) after crestal sinus lifting and grafting with anorganic bovine bone...
2017: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/29234745/the-influence-of-repeated-abutment-changes-on-peri-implant-tissue-stability-3-year-post-loading-results-from-a-multicentre-randomised-controlled-trial
#19
Eriberto Bressan, Maria Gabriella Grusovin, Ferdinando D'Avenia, Konrad Neumann, Luca Sbricoli, Giuseppe Luongo, Marco Esposito
PURPOSE: To evaluate the influence of at least three abutment disconnections in conventional loaded implants against placement of a definitive abutment in immediately non-occlusal loaded implants on hard and soft tissue changes. A secondary aim was to evaluate whether the presence of less than 2 mm of keratinised mucosa is associated with increased peri-implant marginal bone loss and soft tissue recessions. MATERIALS AND METHODS: Eighty patients requiring one single crown or one fixed partial prosthesis supported by a maximum of three implants were randomised, after implants were placed with more than 35 Ncm, according to a parallel group design to receive definitive abutments that were loaded immediately (definitive abutment or immediate loading group) or transmucosal abutments, which were delayed loaded after 3 months and removed at least three times: 1...
2017: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/29223315/metal-free-full-arch-fixed-prosthesis-for-edentulous-mandible-rehabilitation-on-four-implants
#20
Alfredo Passaretti, Giulia Petroni, Giovanna Miracolo, Valeria Savoia, Angelo Perpetuini, Andrea Cicconetti
PURPOSE: The goal of this work is to describe an implant-prosthetic protocol for rehabilitation of edentulous mandible, by using a fixed prosthesis made of fiber-reinforced composite material (FRC). The protocol contemplates a minimal invasive surgery and ensures predictable and safe results, with good aesthetic and performance combined to cost savings. METHODS: FRC material is used to build the substructure of a prosthetic framework supported by four short implants (5mm long and 4mm wide)...
December 6, 2017: Journal of Prosthodontic Research
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