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Implant supported prosthesis

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https://www.readbyqxmd.com/read/28095519/a-clinical-study-assessing-the-influence-of-anodized-titanium-and-zirconium-dioxide-abutments-and-peri-implant-soft-tissue-thickness-on-the-optical-outcome-of-implant-supported-lithium-disilicate-single-crowns
#1
Francisco Martínez-Rus, Marta Prieto, María P Salido, Cristina Madrigal, Mutlu Özcan, Guillermo Pradíes
PURPOSE: To assess the influence of anodized titanium and zirconium dioxide abutments and peri-implant soft tissue thickness on the optical outcome of implant-supported lithium disilicate single crowns. MATERIALS AND METHODS: Twenty patients with a missing maxillary single incisor, canine, or first premolar received an endosseous implant after a two-stage surgery protocol. After healing and soft tissue conditioning, peri-implant soft tissues were reproduced in the impression, and the thickness was measured...
January 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28091447/prosthetic-rehabilitation-of-a-patient-with-a-resected-right-temporomandibular-joint
#2
M Dincel, H Kocaağaoğlu, H Ö Gümüş, H Albayrak
This case report presents the prosthodontic rehabilitation of a patient with a resected right mandible, caused by an accident. Right condyle, ramus, and the posterior part of ramus were affected by the accident. These structures were resected, and the mandible was positioned toward the surgical area and a facial asymmetry was occurred. The patient was treated with a bar-retained maxillar denture with a guide ramp and an implant-supported fixed mandibular prosthesis.
February 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/28089330/finite-element-analysis-of-implant-assisted-removable-partial-dentures-framework-design-considerations
#3
Reza Shahmiri, Raj Das
STATEMENT OF PROBLEM: Connecting an acrylic resin base to both a metal framework and a rigidly fixed implant may affect the rotational displacement of the prosthesis during loading. PURPOSE: The purpose of this finite element analysis study was to analyze the effect of connecting a denture base metal framework to an implant with the aim of decreasing the rotational movement of an implant-assisted removable partial denture. MATERIAL AND METHODS: A mesial occlusal rest direct retainer and a distal occlusal rest direct retainer were modeled and adapted to incorporate a modified denture base metal framework in the connection area for each model...
January 12, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28068622/tribological-behavior-of-ti6al4v-cellular-structures-produced-by-selective-laser-melting
#4
F Bartolomeu, M Sampaio, O Carvalho, E Pinto, N Alves, J R Gomes, F S Silva, G Miranda
Additive manufacturing (AM) technologies enable the fabrication of innovative structures with complex geometries not easily manufactured by traditional processes. Regarding metallic cellular structures with tailored/customized mechanical and wear performance aiming to biomedical applications, Selective Laser Melting (SLM) is a remarkable solution for their production. Focusing on prosthesis and implants, in addition to a suitable Young's modulus it is important to assess the friction response and wear resistance of these cellular structures in a natural environment...
January 4, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28066608/transcatheter-aortic-valve-implantation-tavi-versus-sutureless-aortic-valve-replacement-suavr-for-aortic-stenosis-a-systematic-review-and-meta-analysis-of-matched-studies
#5
Nelson Wang, Yi-Chin Tsai, Natasha Niles, Vakhtang Tchantchaleishvili, Marco Di Eusanio, Tristan D Yan, Kevin Phan
BACKGROUND: With improving technologies and an increasingly elderly populations, there have been an increasing number of therapeutic options available for patients requiring aortic valve replacement. Recent evidence suggests that transcatheter aortic valve implantation (TAVI) is one suitable option for high risk inoperable patients, as well as high risk operable patients. Sutureless valve technology has also been developed concurrently, with facilitates surgical aortic valve replacement (SUAVR) by allow resection and replacement of the native aortic valve with minimal sutures and prosthesis anchoring required...
November 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28065350/preoperative-urine-culture-results-correlate-poorly-with-bacteriology-of-urologic-prosthetic-device-infections
#6
Nicholas L Kavoussi, Jordan A Siegel, Boyd R Viers, Travis J Pagliara, Matthias D Hofer, Billy H Cordon, Nabeel Shakir, Jeremy M Scott, Allen F Morey
INTRODUCTION: Although preoperative negative urine culture results and treatment of urinary tract infections are generally advised before artificial urinary sphincter (AUS) and penile prosthesis (PP) surgery to prevent device infection, limited evidence exists to support this practice. AIM: To evaluate the relation between preoperative urine culture results and the bacteriology of prosthetic device infections. METHODS: Men undergoing AUS and/or PP placement at a tertiary referral center from 2007 through 2015 were analyzed...
January 2017: Journal of Sexual Medicine
https://www.readbyqxmd.com/read/28060092/functional-reconstruction-of-nonsegmental-mandibular-defect-with-fresh-frozen-bone-graft-and-delayed-implants-placement
#7
Tommaso Bucci, Pier Francesco Nocini
The loss of teeth and the alveolar bone secondary to resection of mandibular tumors may lead to unfavorable esthetic and functional results with a significant impairment of mastication.The authors report a 53-year-old patient with recurrence of ameloblastoma who was submitted to marginal mandibulectomy. Bone defect was immediately reconstructed using fresh frozen bone graft and 9 months after reconstruction 3 dental implants were inserted in the grafted bone. After 6 months, dental rehabilitation was achieved using a fixed implant-supported prosthesis...
January 5, 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28060024/stress-distribution-in-an-implant-supported-mandibular-complete-denture-using-different-cantilever-lengths-and-occlusal-coating-materials
#8
Rodrigo Antonio de Medeiros, Marcelo Coelho Goiato, Aldiéris Alves Pesqueira, Aljomar José Vechiato Filho, Liliane da Rocha Bonatto, Daniela Micheline Dos Santos
PURPOSE: The aim of this study was to assess stress distribution in the bone-implant interface of a mandibular implant-supported prosthesis with different cantilever lengths, aesthetic coating materials, and implant abutments. MATERIALS AND METHODS: A photoelastic model of an edentulous mandible, containing 5 external hexagon implants, was constructed. Experimental models were divided into 6 groups: group 1-UCLA component and metal bar; group 2-UCLA component and acrylic resin coating; group 3-UCLA component and porcelain coating; group 4-abutment and metal bar; group 5-abutment and acrylic resin coating; and group 6-abutment and porcelain coating...
January 4, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28050985/patients-awareness-toward-implant-supported-prosthesis-an-observational-study
#9
C Mahendra Raju, Sumanth Gunupati, Madisetty Mahesh Babu, C Sameer Kumar Reddy, Sukrutha Biradavolu, M Saravanan
INTRODUCTION: Implant-supported prosthesis has high predictability and success and improves quality of life. This study aims at assessing awareness among the patients regarding implant-supported prosthesis. MATERIALS AND METHODS: A cross-sectional study was conducted among 391 study participants. A structured questionnaire was distributed to assess implant-related awareness among the study participants. The questionnaires were analyzed for the responses. RESULTS: Among the 391 respondents, 37...
January 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28046603/su-f-t-374-dosimetric-effects-of-irradiation-through-a-bilateral-hip-prosthesis-in-a-mri-linac
#10
M Wronski, S Ahmad, A Sarfehnia, A Sahgal, B Keller
PURPOSE: To evaluate the interface effects when irradiating through a hip prosthesis in the presence of an orthogonal 1.5 T magnetic field using Monte Carlo simulations. METHODS: A 20×20×38 cm virtual phantom with two 5×5×5 cm sections of bilateral titanium hip prosthesis was created in GPU-based Monte Carlo (MC) algorithm (GPUMCD, Elekta AB, Stockholm Sweden). The lateral prosthesis spacing was based on a representative patient CT scan. A treatment SAD of 143...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28045822/fabrication-of-an-orbital-prosthesis-combined-with-eyebrow-transplantation
#11
Banu Karayazgan-Saracoglu, Azimet Ozdemir
Fabrication of an orbital prosthesis is considered as a challenging procedure as compared to the other facial prosthesis due to the presence of inactive eye movements and the need of artificial hair in order to mimic eyelashes and eyebrows. Generally these structures are sewed or bonded in the silicone. However, deformation or hair loss is observed within time. This deformation is visible especially in the eyebrow. This clinical report represents a patient with an implant supported orbital prosthesis. Patient was not satisfied with the nature of her eyebrow that was sewed in the silicone...
December 30, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28028424/aortic-root-enlargement-or-sutureless-valve-implantation
#12
Nikolaos G Baikoussis, Panagiotis Dedeilias, Michalis Argiriou
Aortic valve replacement (AVR) in patients with a small aortic annulus is a challenging issue. The importance of prosthesis-patient mismatch (PPM) post aortic valve replacement (AVR) is controversial but has to be avoided. Many studies support the fact that PPM has a negative impact on short and long term survival. In order to avoid PPM, aortic root enlargement may be performed. Alternatively and keeping in mind that often some comorbidities are present in old patients with small aortic root, the Perceval S suturelles valve implantation could be a perfect solution...
December 15, 2016: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28005801/zygomatic-implant-subjected-to-immediate-loading-for-atrophic-maxilla-rehabilitation
#13
Pâmela Letícia Dos Santos, Gustavo Henrique Souza Silva, Fernanda Rayssa Da Silva Pereira, Raquel Damazia da Silva, Mirella Lindoso Gomes Campos, Thiago Borges Mattos, Jéssica Lemos Gulinelli
As life expectancy increases, a larger number of elderly people require dental health care attention for implant-supported rehabilitation, with the aim of restoring the function and aesthetics of the oral cavity. Most of these patients have lost their teeth long time ago, causing a severe bone resorption and maxillary sinus pneumatization. Therefore, the current study aims to demonstrate, through the description of the clinical case, the treatment with zygomatic implants as an option for treating severely atrophic maxillas...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28005771/ocular-reconstruction-using-bone-anchored-implants-in-irradiated-facial-deformities-after-tumor-extirpation
#14
Mansher Singh, Raquel Minasian, Matthew Jackson, E J Caterson
BACKGROUND: Surgical resection of ocular malignancies can result in complex craniofacial defects that can be difficult to reconstruct with conventional reconstruction techniques. Craniofacial prosthesis supported by bone-anchored implants has evolved as a reliable alternative in such scenarios. METHODS: The authors describe a patient who underwent extensive facial resection secondary to squamous cell carcinoma resulting in significant facial deformities. A bone-anchored osseointegrated implant was used to perform facial reconstruction...
November 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28000276/screw-retained-vs-cement-retained-implant-supported-fixed-dental-prosthesis
#15
REVIEW
Julia-Gabriela Wittneben, Tim Joda, Hans-Peter Weber, Urs Brägger
A fixed dental prosthesis can be secured to an endosseous implant via cementation (using a provisional or definitive cement) on an implant abutment that is screw retained to the implant or directly in the implant via screw retention. The clinical decision as to which retention system best suits the individual patient depends on several factors. The aim of this review is to present a detailed overview of the factors potentially influencing whether to choose screw retention or cement retention. These factors include the individual indication, advantages and disadvantages of the different retention mechanisms, the retention provided, retrievability, provisionalization, esthetics and clinical performance, including failures and complications...
February 2017: Periodontology 2000
https://www.readbyqxmd.com/read/28000275/current-state-of-the-art-of-computer-guided-implant-surgery
#16
REVIEW
Jan D'haese, Johan Ackhurst, Daniel Wismeijer, Hugo De Bruyn, Ali Tahmaseb
The invention of computerized axial tomography (now known as computerized tomography) and developments of interactive software to allow virtual planning, with the aim to guide the surgery precisely toward a specific target, has dramatically improved general, as well as oral, surgery. Virtual dental implant planning allows for a prosthetically driven approach, resulting in the best possible design of the prosthesis, better esthetics, optimized occlusion and loading. This approach has also changed the surgical paradigm of using extensive flaps to obtain a proper view of the surgical area because flapless implant surgery, with or without immediate loading, has become more predictable...
February 2017: Periodontology 2000
https://www.readbyqxmd.com/read/27994892/natural-tooth-pontic-an-instant-esthetic-option-for-periodontally-compromised-teeth-a-case-series
#17
Rishi Raj, Kriti Mehrotra, Ipshita Narayan, Triveni Mavinakote Gowda, D S Mehta
Sudden tooth loss in the esthetic zone of the maxillary or mandibular anterior region can be due to trauma, periodontal disease, or endodontic failure. The treatment options for replacing the missing tooth can vary between removable prosthesis, tooth-supported prosthesis, and implant-supported prosthesis. Irrespective of the final treatment, the first line of management would be to provisionally restore the patient's esthetic appearance at the earliest, while functionally stabilizing the compromised arch. Using the patient's own natural tooth as a pontic offers the benefits of being the right size, shape, and color and provides exact repositioning in its original intraoral three-dimensional position...
2016: Case Reports in Dentistry
https://www.readbyqxmd.com/read/27990507/four-mm-long-versus-longer-implants-in-augmented-bone-in-atrophic-posterior-jaws-4-month-post-loading-results-from-a-multicentre-randomised-controlled-trial
#18
Marco Esposito, Giovanni Zucchelli, Carlo Barausse, Roberto Pistilli, Anna Trullenque-Eriksson, Pietro Felice
PURPOSE: To evaluate whether 4-mm long dental implants could be an alternative to augmentation with equine bone blocks and the placement of at least 10-mm long implants in atrophic posterior jaws. MATERIALS AND METHODS: Forty patients with atrophic posterior (premolar and molar areas) mandibles having 5 to 6 mm bone height above the mandibular canal and 40 patients with atrophic maxillae having 4 to 5 mm below the maxillary sinus, were randomised according to a parallel group design to receive one to three 4...
2016: European Journal of Oral Implantology
https://www.readbyqxmd.com/read/27987717/effect-of-different-types-of-prosthetic-platforms-on-stress-distribution-in-dental-implant-supported-prostheses
#19
Lurian Minatel, Fellippo Ramos Verri, Guilherme Abu Halawa Kudo, Daniel Augusto de Faria Almeida, Victor Eduardo de Souza Batista, Cleidiel Aparecido Araujo Lemos, Eduardo Piza Pellizzer, Joel Ferreira Santiago
A biomechanical analysis of different types of implant connections is relevant to clinical practice because it may impact the longevity of the rehabilitation treatment. Therefore, the objective of this study is to evaluate the Morse taper connections and the stress distribution of structures associated with the platform switching (PSW) concept. It will do this by obtaining data on the biomechanical behavior of the main structure in relation to the dental implant using the 3-dimensional finite element methodology...
February 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/27987598/role-of-vessel-to-prosthesis-size-mismatch-in-venous-valve-performance
#20
Wei-Hsin Tien, Xuefeng Zhao, Henry Y Chen, Zachary C Berwick, Joshua F Krieger, Sean Chambers, Dana Dabiri, Ghassan S Kassab
BACKGROUND: Efforts to treat chronic venous insufficiency have focused on the development of prosthetic venous valves. The role of prosthetic valve-to-vessel size matching has not been determined. The purpose of this investigation was to assess the effect of size mismatching on venous valve function and to establish a mismatch limit that affects valve hemodynamic performance and venous wall stress to improve future valve designs and implants. METHODS: Flow dynamics of prosthetic venous valves were studied in vitro using a pulse duplicator flow loop...
January 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
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