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Implant supported prosthesis

Bruno Tochetto Primo, Leonardo Marcos Mezzari, Luís Carlos da Fontoura Frasca, Raquel Linderman, Elken Gomes Rivaldo
PURPOSE: To evaluate and compare the clinical and radiographic outcomes of mandibular rehabilitation with fixed prostheses on three implants with immediate versus delayed loading. MATERIALS AND METHODS: The sample comprised 21 patients who underwent treatment with immediate loading and 23 who received delayed loading. All had worn their prostheses for at least 18 months. Radiographic evaluation of bone loss was carried out in Adobe Photoshop CS5 by a single calibrated examiner using digitized panoramic radiographs...
March 15, 2018: International Journal of Oral & Maxillofacial Implants
Kerstin Hagberg
PURPOSE: To describe the rehabilitation experience and outcome of treatment with bone-anchored prostheses in individuals with bilateral transfemoral amputations (TFAs) treated in Sweden over a period of 25 years. METHOD: Hospital records were reviewed for all patients with traumatic bilateral TFAs treated until 2015. The use of prostheses, walking aids and wheelchairs was noted. RESULTS: The cohort comprised 12 patients (nine men and three women with a mean age 35 years at treatment) and the median follow-up time was seven years (1-20)...
March 14, 2018: Disability and Rehabilitation. Assistive Technology
Renato Sussumu Nishioka, Leandro Ruivo De Santis, Gabriela Nogueira De Melo Nishioka, Alberto Noriyuki Kojima, Francisley Ávila Souza
PURPOSE: This in vitro study assessed the accuracy of multiple implant-level impression techniques (open tray and closed tray) for the fabrication of 3-unit implant prostheses with strain gauge (SG) analysis. MATERIALS AND METHODS: A polyurethane master model was designed to simulate a clinical situation. Two rigid custom trays were fabricated for the model. The impression material used was polysulfide. Transfer implant impressions were made using 2 techniques; ten tapered copings not splinted (custom closed tray) and ten square copings splinted with acrylic-resin (custom open tray)...
March 9, 2018: Implant Dentistry
Xueyin An, Jing-Huan Fang, Seung-Mi Jeong, Byung-Ho Choi
An interim restoration is a prototype for the definitive prosthesis and preserves the occlusal information and the original vertical dimension of the occlusion. Several techniques have been developed to transfer the information from implant-supported fixed interim to definitive restoration. However, these conventional techniques have limitations, and they are time-consuming, require making impressions and stone casts, and mounting in an articulator. The purpose of this article was to describe a digital technique to accurately transfer the information from complete-arch implant interim restoration to definitive restorations without using definitive casts...
March 8, 2018: Journal of Prosthetic Dentistry
Onder Canguven, Raidh Talib, Walid El Ansari, Kareim Khalafalla, Abdulla Al Ansari
BACKGROUND AND OBJECTIVES: Diabetes mellitus is an important risk factor for erectile dysfunction (ED). Penile prosthesis implantation surgery is the final solution for diabetic patients with ED, but infections thereof are still a serious risk factor. While some studies suggest that most infections associated with penile prosthesis implantation are associated to high glycated hemoglobin (HbA1c) levels, other research did support such relationship. MATERIALS AND METHODS: The current study assessed retrospectively, the association between HbA1c level and penile prosthesis surgery infection...
March 9, 2018: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
Hakan Arinc
PURPOSE: To evaluate the effects of prosthetic material on the degree of stress to the cortical bone, trabecular bone, framework, and implants using finite element analysis (FEA). MATERIALS AND METHODS: A mandibular implant-supported fixed prosthesis was designed. Different prosthetic materials [cobalt-chromium-supported ceramic, zirconia-supported ceramic, and zirconia-reinforced polymethyl methacrylate (ZRPMMA)-supported resin] were used. FEA was used to evaluate stress under different loading conditions...
March 5, 2018: Implant Dentistry
Fathima Banu Raza, Anand Kumar Vaidyanathan, Padmanabhan T Veeravalli, Subhiksha Ravishankar, Aashique S Ali
BACKGROUND: Single piece implant in fixed prosthesis is widely been evaluated, however, long term evaluation of crestal bone loss and the wear of O-ring in single piece ball attachment implant supported overdenture is yet to be evaluated PURPOSE: The present article evaluates the crestal bone loss around single piece ball attachment implants placed bilaterally in the canine region and the wear of O-ring in implant supported overdenture over a period of three years. MATERIALS AND METHODS: Twelve completely edentulous patients between the age group of 55-65 years were selected...
March 6, 2018: Clinical Implant Dentistry and related Research
Fernando Moreno de Oliveira, Rodrigo Salazar-Gamarra, David Öhman, Ulf Nannmark, Vanessa Pecorari, Luciano Lauria Dib
STATEMENT OF PROBLEM: Evaluate the effect of orbital prosthesis retained by implants through a specific quality of life (QOL) questionnaire provides important information on patients QOL, great incentive for the multidisciplinary team and public health support to continue work in this area. PURPOSE: The objective of the study was to evaluate patient satisfaction with orbital implant-supported prostheses using an adapted quality of life questionnaire. MATERIALS AND METHODS: Forty five patients using orbital implant-supported prostheses for a period ranging from six to 120 months...
March 6, 2018: Clinical Implant Dentistry and related Research
R Samaniego Alonso, E Gaviria Parada, M Pons Cabrafiga, M Espallargues Carreras, O Martinez Cruz
INTRODUCTION: In our environment, it is increasingly necessary to perform an activity based on scientific evidence and the field of prosthetic surgery should be governed by the same principles. The national arthroplasty registries allow us to obtain a large amount of data in order to evaluate this technique. The aim of our study is to analyse the scientific evidence that supports the primary total knee arthroplasties implanted in Catalonian public hospitals, based on the Arthoplasty Registry of Catalonia (RACat) MATERIAL AND METHODS: A review of the literature was carried out on knee prostheses (cruciate retaining, posterior stabilized, constricted and rotational) recorded in RACat between the period 2005-2013 in the following databases: Orthopedic Data Evaluation Panel, PubMed, TripDatabase and Google Scholar...
February 28, 2018: Revista Española de Cirugía Ortopédica y Traumatología
Grace Chiu, Chris Chang, W Eugene Roberts
A 36-year-old woman with good periodontal health sought treatment for a compensated Class II partially edentulous malocclusion associated with a steep mandibular plane (SN-MP, 45°), 9 missing teeth, a 3-mm midline discrepancy, and compromised posterior occlusal function. She had multiple carious lesions, a failing fixed prostheses in the mandibular right quadrant replacing the right first molar, and a severely atrophic edentulous ridge in the area around the mandibular left first and second molars. After restoration of the caries, the mandibular left third molar served as anchorage to correct the mandibular arch crowding...
March 2018: American Journal of Orthodontics and Dentofacial Orthopedics
Lambert J Stumpel, Walter Haechler
The metal-resin hybrid full-arch prosthesis has been a traditionally used type of restoration for full-arch implant fixed dentures. A newer development has centered around the use of monolithic zirconia or zirconia veneered with porcelain. Being a ceramic, zirconia has the potential for fracture. This article describes a technique that utilizes a metal substructure to support a chemically and mechanically resinbonded shell of zirconia. The workflow is discussed, ranging from in-office master cast fabrication to the CAD/ CAM production of the provisional and the definitive metal-zirconia prosthesis...
March 2018: Compendium of Continuing Education in Dentistry
Nikhil Sobti, Emily Ji, Rebecca L Brown, Curtis L Cetrulo, Amy S Colwell, Jonathan M Winograd, William G Austen, Eric C Liao
BACKGROUND: Although many studies have examined the safety of acellular dermal matrix in immediate prosthetic breast reconstruction, few studies have evaluated efficacy. This study examined initial tissue expander fill volume as a marker of efficacy, comparing patients after staged prosthetic breast reconstruction assisted with acellular dermal matrix versus breast reconstruction not assisted with acellular dermal matrix. Number of fill visits and time interval to implant exchange were examined as secondary endpoints...
March 2018: Plastic and Reconstructive Surgery
Hamid Neshandar Asli, Zahra Dalili Kajan, Fatemeh Gholizade
STATEMENT OF PROBLEM: Cement-retained implant-supported restorations have advantages over screw-retained restorations but are difficult to retrieve. Identifying the approximate location of the screw access hole (SAH) may reduce damage to the prosthesis. PURPOSE: The purpose of this in vitro study was to evaluate the ability of cone beam computed tomography (CBCT) imaging to determine the location and direction of SAHs in cement-retained implant prostheses. MATERIAL AND METHODS: Five clear acrylic resin casts were made based on a mandibular model...
February 21, 2018: Journal of Prosthetic Dentistry
Burak Yilmaz, Ediz Kale, William M Johnston
STATEMENT OF PROBLEM: Computer-aided design and computer-aided manufacturing (CAD-CAM) high-density polymers (HDPs) have recently been marketed for the fabrication of long-term interim implant-supported fixed prostheses. However, information regarding the precision of fit of CAD-CAM HDP implant-supported complete-arch screw-retained prostheses is scarce. PURPOSE: The purpose of this in vitro study was to evaluate the marginal discrepancy of CAD-CAM HDP complete-arch implant-supported screw-retained fixed prosthesis frameworks and compare them with conventional titanium (Ti) and zirconia (Zir) frameworks...
February 21, 2018: Journal of Prosthetic Dentistry
Quentin Qassemyar, Nathaniel Assouly, Yoni Madar, Stéphane Temam, Frédéric Kolb
Total nasal reconstruction is a challenging surgical procedure which usually involves a free flap, forehead flap, and cartilage grafts. In certain failure situations where patients do not accept the idea of anaplastology, possibilities become very limited. We report the case of a patient who underwent several reconstruction steps with multiple failures including free and local flaps and cartilage harvests which showed recurrent episodes of necrosis and infection leading to melting and collapse of reconstructed structures...
February 21, 2018: Microsurgery
Gustavo Da Dos Santos Pinto, Suzane Cristina Pigossi, Tércio Pessoa, Lélis Gustavo Nícoli, Raphael Ferreira de Souza Bezerra Araújo, Cláudio Marcantonio, Elcio Marcantonio
PURPOSE: The aim of this case report was to demonstrate the repair of a large sinus membrane perforation related to a sinus floor augmentation procedure, using leukocyte platelet-rich fibrin (L-PRF), for subsequent rehabilitation of a partially edentulous patient. MATERIALS AND METHODS: The patient presented the absence of teeth numbers 18, 17, and 16, associated with insufficient bone height because of the maxillary sinus pneumatization. A maxillary inlay bone graft was proposed, however, during the sinus floor augmentation procedure, a large portion of the sinus membrane was ruptured...
February 16, 2018: Implant Dentistry
R Orjonikidze, Z Orjonikidze, I Shirokov, S Arutyunov
Temporary prosthesis transformed into a prosthetic prototypes and manufactured by CAD/CAM technologies (computer copy milling) are used to specify the final form of future permanent restoration and to correct occlusal relationships, vertical size of non-removable dentures, and their occlusal surfaces. A progressive loading on bone tissue in the implantation area and soft tissues formation, have been assessed. In this regard, the choice and placement of temporary mini-implants, as the supports for non-removable denture prototypes for the period of osseointegration of two-stage intraosseous dental implants, are the issues of great importance...
January 2018: Georgian Medical News
Z Orjonikidze, R Orjonikidze, S Arutyunov
The aim of this study was to assess and develop an effective computer technology assisted method for improved treatment of dental implant patients. Both an experimental and clinical assessments were conducted. The experimental part was performed to develop the mathematical models for calculating and analyzing the tensely deformed condition (TDC) in the system "non-removable prosthesis - dental implant - lower jaw " (PIJ). Clinical study was conducted on 76 patients with previously placed dental implant supported prostheses in the posterior parts of the lower jaw (with and without signs of bone receding around the implants) allocated into three groups...
January 2018: Georgian Medical News
M E Pasqualini, D Lauritano, F Rossi, L Dal Carlo, M Shulman, F Meynardi, D Colombo, P Manenti, G Comola, P Zampetti
The authors present an implant prosthesis procedure that uses screws on one-piece implants connected with a titanium pin at their abutment level and one supporter titanium bar in order to guarantee immediate stabilization. These can be implanted and fitted with customized temporary crowns in a single surgical procedure, restoring function and aesthetics and consenting recovery of the bone deficit with reduced healing times and limited patient discomfort. One-piece wide-diameter titanium screw implants with thread measurements of 2...
January 2018: Journal of Biological Regulators and Homeostatic Agents
Jian-Tao Liu, Feng Zhang, Zheng-Chao Gao, Bin-Bin Niu, Yu-Huan Li, Xi-Jing He
Artificial vertebral body has achieved good results in treating spinal tumors, tuberculosis, fracture and other diseases. Currently, artificial vertebral body with variety of kinds and pros and cons, is generally divided into two types: fusion type and movable type. The former according to whether the height could be adjusted and strength of self-stability is divided into three types: support-fixed type, adjust-fixed type and self-fixed type. Whether the height of self-fixed type could be adjusted is dependent on structure of collar thread rotation...
December 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
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