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https://www.readbyqxmd.com/read/28721994/evaluation-of-marginal-and-internal-gaps-of-metal-ceramic-crowns-obtained-from-conventional-impressions-and-casting-techniques-with-those-obtained-from-digital-techniques
#1
Rathika Rai, S Arun Kumar, R Prabhu, Ranjani Thillai Govindan, Faiz Mohamed Tanveer
BACKGROUND: Accuracy in fit of cast metal restoration has always remained as one of the primary factors in determining the success of the restoration. A well-fitting restoration needs to be accurate both along its margin and with regard to its internal surface. AIM: The aim of the study is to evaluate the marginal fit of metal ceramic crowns obtained by conventional inlay casting wax pattern using conventional impression with the metal ceramic crowns obtained by computer-aided design and computer-aided manufacturing (CAD/CAM) technique using direct and indirect optical scanning...
May 2017: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://www.readbyqxmd.com/read/28720339/in%C3%A2-vitro-fit-of-cad-cam-complete-arch-screw-retained-titanium-and-zirconia-implant-prostheses-fabricated-on-4-implants
#2
Hadi Al-Meraikhi, Burak Yilmaz, Edwin McGlumphy, William Brantley, William M Johnston
STATEMENT OF PROBLEM: Computer-aided designed and computer-aided manufactured (CAD-CAM) titanium and zirconia implant-supported fixed implant prostheses on 4 implants have become popular. The precision and accuracy of their interface fit has not been widely researched. PURPOSE: The purpose of this in vitro study was to compare the marginal fit of zirconia and titanium implant-supported screw-retained CAD-CAM complete fixed dental prostheses (CFDP) fit with a standardized cast simulating the all-on-4 implant distribution...
July 15, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28720338/complete-denture-fabrication-using-piezography-and-cad-cam-a-clinical-report
#3
Chikahiro Ohkubo, Hidemasa Shimpo, Ai Tokue, Eun-Jin Park, Tae Hyung Kim
To provide maxillary and mandibular complete dentures for a patient with severe ridge resorption, the denture space was recorded using the piezography technique. After the piezographic space was scanned, a virtual tooth arrangement and festooning were performed within the space using computer-aided design software. The denture bases were milled from a polymethylmethacrylate resin block using computer-aided manufacturing, and commercially available denture teeth were bonded with resin adhesive. Using the piezography technique described, physiologically appropriate complete dentures were fabricated based on the neutral zone concept...
July 15, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28717792/accelerated-fatigue-resistance-%C3%A2-of-novel-design-histoanatomic-%C3%A2-implant-restorations-made-of-%C3%A2-cad-cam-bilaminar-assemblies
#4
Ivan Molina, Jack Goldberg, Claudia Maziero Volpato, Pascal Magne
OBJECTIVES: Evaluate the fatigue resistance and failure mode of novel-design implant restorations made of histoanatomic computer-assisted design/computer-assisted manufacturing (CAD/CAM) bilaminar bonded assemblies. MATERIAL AND METHODS: 60 screw-retained implant restorations were fabricated. Monolithic restorations were used as a control group (15 lithium disilicate: group CE; and 15 nanofilled composite resin: group CL), and compared with bilaminar restorations (15 dentin-shaped lithium disilicate mesostructures with a bonded nanofilled composite resin veneer: group CEL; and 15 dentin-shaped nanofilled composite resin mesostructures with a bonded lithium disilicate veneer: group CLE)...
2017: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/28717635/the-fabrication-of-a-customized-occlusal-splint-based-on-the-merging-of-dynamic-jaw-tracking-records-cone-beam-computed-tomography-and-cad-cam-digital-impression
#5
Katerina Aslanidou, Chung How Kau, Christos Vlachos, Tayem Abou Saleh
OBJECTIVES: The aim of this case report was to present the procedure of fabricating a customized occlusal splint, through a revolutionary software that combines cone beam computed tomography (CBCT) with jaw motion tracking (JMT) data and superimposes a digital impression. MATERIALS AND METHODS: The case report was conducted on a 46-year-old female patient diagnosed with the temporomandibular disorder. A CBCT scan and an optical impression were obtained. The range of the patient's mandibular movements was captured with a JMT device...
July 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28713601/resin-nanoceramic-cad-cam-restoration-of-the-primary-molar-3-year-follow-up-study
#6
Akif Demirel, Tuğba Bezgin, Funda Akaltan, Şaziye Sarı
This case report presents the clinical use of a resin nanoceramic CAD/CAM restoration of a primary second molar without successor in the form of a permanent second premolar tooth in a patient. Three-year follow-up of the case revealed that resin nanoceramic CAD/CAM restoration of the primary molar without successor achieved both aesthetics and function. Despite the high cost of treatment, this type of restoration should be considered if the retained tooth is expected to maintain functionality over the long term...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28713496/effect-of-denture-cleaning-on-abrasion-resistance-and-surface-topography-of-polymerized-cad-cam-acrylic-resin-denture-base
#7
Lana Ahmed Shinawi
BACKGROUND: The application of computer-aided design computer-aided manufacturing (CAD CAM) technology in the fabrication of complete dentures, offers numerous advantages as it provides optimum fit and eliminates polymerization shrinkage of the acrylic base. Additionally, the porosity and surface roughness of CAD CAM resins is less compared to conventionally processed resins which leads to a decrease in the adhesion of bacteria on the denture base, which is associated with many conditions including halitosis and aspiration pneumonia in elderly denture wearers...
May 2017: Electronic Physician
https://www.readbyqxmd.com/read/28713119/adhesive-bonding-to-computer-aided-design-computer-aided-manufacturing-esthetic-dental-materials-an-overview
#8
Mohamed Moustafa Awad, H Alqahtani, A Al-Mudahi, M S Murayshed, A Alrahlah, Shilpa H Bhandi
AIM: To review the adhesive bonding to different computer-aided design/computer-aided manufacturing (CAD/CAM) esthetic restorative materials. BACKGROUND: The use of CAD/CAM esthetic restorative materials has gained popularity in recent years. Several CAD/ CAM esthetic restorative materials are commercially available. Adhesive bonding is a major determinant of success of CAD/ CAM restorations. Review result: An account of the currently available bonding strategies are discussed with their rationale in various CAD/ CAM materials...
July 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28710653/mechanical-performance-of-cement-and-screw-retained-all-ceramic-single-crowns-on-dental-implants
#9
Matthias Obermeier, Oliver Ristow, Kurt Erdelt, Florian Beuer
OBJECTIVES: This in-vitro study was performed to compare the contact wear, fracture strength and failure mode of implant-supported all-ceramic single crowns manufactured with various fabrication and fixation concepts. MATERIALS AND METHODS: Fifty dental implants (Conelog Ø 4,3mm/L11mm, Camlog Biotechnologies AG) were embedded and treated with all-ceramic molar single-crowns. Three groups received hand-layered zirconia crowns (IPS e.max Ceram/ IPS e.max ZirCAD, Ivoclar Vivadent AG): CZL (cement-retained zirconia-based layered) group crowns were cemented conventionally, SZL (screw-retained zirconia-based layered) group crowns were screw-retained, MZL (modified zirconia-based layered) group crowns showed a different coping design with screw retention...
July 15, 2017: Clinical Oral Investigations
https://www.readbyqxmd.com/read/28709681/customized-locator-abutment-fabrication-on-inclined-implants-a-clinical-report
#10
Hee-Chul Kim, Janghyun Paek
Implant parallelism is rarely achieved, particularly when anatomic limitations are present. The problem of nonparallel implants has been addressed by using angled or bar abutments to compensate for the implant angulation. However, an angled abutment or bar attachment has disadvantages in terms of cost, laboratory process, and the maintenance of oral hygiene. In this clinical report, a solution for the management of an inclined implant is presented by using customized locator abutment fabricated by computer-aided design and computer-aided manufacturing (CAD-CAM)...
July 11, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28709680/patient-satisfaction-with-laser-sintered-removable-partial-dentures-a-crossover-pilot-clinical-trial
#11
Balqees Almufleh, Elham Emami, Omar Alageel, Fabiana de Melo, Francois Seng, Eric Caron, Samer Abi Nader, Ashwaq Al-Hashedi, Rubens Albuquerque, Jocelyne Feine, Faleh Tamimi
STATEMENT OF PROBLEM: Clinical data regarding newly introduced laser-sintered removable partial dentures (RPDs) are needed before this technique can be recommended. Currently, only a few clinical reports have been published, with no clinical studies. PURPOSE: This clinical trial compared short-term satisfaction in patients wearing RPDs fabricated with conventional or computer-aided design and computer-aided manufacturing (CAD-CAM) laser-sintering technology. MATERIAL AND METHODS: Twelve participants with partial edentulism were enrolled in this pilot crossover double-blinded clinical trial...
July 11, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28709674/accuracy-of-cad-cam-fabricated-removable-partial-dentures
#12
Christin Arnold, Jeremias Hey, Ramona Schweyen, Jürgen M Setz
STATEMENT OF PROBLEM: The conventional fabrication of removable partial dentures (RPDs) is a complex, error-prone, time-consuming, and expensive process. The use of computer-aided design and computer-aided manufacturing (CAD-CAM) techniques, especially rapid prototyping, promises a more effective method for fabricating RPD frameworks. PURPOSE: The purpose of this in vitro study was to evaluate the fit of RPD clasps fabricated by means of 4 different CAD-CAM-systems and to compare those fittings with that of the conventional lost-wax casting technique (LWT)...
July 11, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28702970/a-novel-cad-cam-based-surgical-template-for-mandibular-osteoplasty-and-guided-implant-insertion
#13
G B Menchini Fabris, F Gelpi, E Giammarinaro, E Velasco Ortega, S Marconcini, U Covani
Bone shaping is often a necessary procedure prior to implant insertion in mandibular full-arch rehabilitations. Adopting guided surgery procedures is necessary to use two distinct templates: one for bone shaping, a second for guided implant insertion. The present report describes the case of a 60-year-old patient requiring a full-arch, immediately loaded implant-supported mandibular rehabilitation. A CAD/CAM-bone supported surgical template for osteoplasty was used to develop a template for guided implant during an all-on-six immediate-loaded computer-aided implant surgery...
July 13, 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28702265/rehabilitation-of-nose-following-chemical-burn-using-cad-cam-made-substructure-for-implant-retained-nasal-prosthesis-a-clinical-report
#14
Saurabh Chaturvedi, Tushar Bhagat, A K Verma, Vishwanath Gurumurthy, Mariyam Ali, Preeti Vadhwani, Mudita Chaturvedi
Insufficient knowledge of medical chemicals and their improper use have destructive effects. Accidental exposure to chemicals on facial tissue may result in large facial defect. For ages the tradition of piercing nose is common but improper use of unknown chemical for piercing has deleterious effect. Mostly rhinectomy defects are acquired caused by trauma or malignant diseases. Prosthetic rehabilitation is the preferred treatment of choice for any large rhinectomy defects as medical and surgical interventions are ineffective in developing esthetics...
2017: Case Reports in Dentistry
https://www.readbyqxmd.com/read/28697207/reliability-of-a-cad-cam-surgical-guide-for-implant-placement-an-in-vitro-comparison-of-surgeons-experience-levels-and-implant-sites
#15
Su-Jung Park, Richard Leesungbok, Taixing Cui, Suk Won Lee, Su-Jin Ahn
PURPOSE: This in vitro study evaluated the reliability of a surgical guide with regard to different levels of operator surgical experience and implant site. MATERIALS AND METHODS: A stereolithographic surgical guide for epoxy resin mandibles with three edentulous molar sites was produced using a computer-aided design/computer-assisted manufacture (CAD/CAM) system. Two surgeons with and two surgeons without implant surgery experience placed implants in a model either using or not using the CAD/CAM surgical guide...
July 2017: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/28689913/a-technique-for-immediately-restoring-single-dental-implants-with-a-cad-cam-implant-supported-crown-milled-from-a-poly-methyl-methacrylate-block
#16
Periklis Proussaefs, Abdulaziz AlHelal
This technique is used when a single dental implant is placed. A stent made of autopolymerized acrylic resin was used to transfer the implant position to the laboratory. Once the implant position was transferred, the stone cast was scanned, and a computer-aided design and computer-aided manufacturing (CAD-CAM) interim implant-supported crown was milled from a poly(methyl methacrylate) (PMMA) block. A titanium insert, in contact with the implant platform and not the PMMA material, was used to support the crown...
July 7, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28689912/influence-of-scanner-powder-application-and-adjustments-on-cad-cam-crown-misfit
#17
Marcel S Prudente, Letícia R Davi, Kemilly O Nabbout, Célio J Prado, Leandro M Pereira, Karla Zancopé, Flávio D Neves
STATEMENT OF PROBLEM: The manufacturers of computer-aided design and computer-aided manufacturing (CAD-CAM) systems emphasize that new technologies can improve the marginal fit of dental crowns. However, data supporting this claim are limited. PURPOSE: The purpose of this in vitro study was to investigate the differences among the following fabrication methods on the marginal discrepancy of dental crowns: intraoral optical scanners, powder application, and adjustments of intaglio surface...
July 7, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28689909/effects-of-core-and-veneer-thicknesses-on-the-color-of-cad-cam-lithium-disilicate-ceramics
#18
Wol Kang, Jong-Kyoung Park, So-Ri Kim, Woong-Chul Kim, Ji-Hwan Kim
STATEMENT OF PROBLEM: The color of dental ceramics is important for achieving successful esthetic restorations. However, insufficient studies are available of the color of recently introduced computer-aided design-computer-aided manufacturing (CAD-CAM) lithium disilicate ceramics as functions of the core and veneer thicknesses. PURPOSE: The purpose of this in vitro study was to evaluate the effects of the thickness of different core and veneer thicknesses on the color of CAD-CAM lithium disilicate ceramics...
July 6, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28687468/two-different-techniques-of-manufacturing-tmj-replacements-a-technical-report
#19
Marcin Kozakiewicz, Tomasz Wach, Piotr Szymor, Rafał Zieliński
INTRODUCTION: Presently, during the surgical treatment of the patients in maxillofacial surgery, one can use various medical implants. Moreover custom made implants are being used. Replacements may be fitted to the structure and shape of the human skull owing to CAD/CAM (custom aided design/manufacture) called customized implants. This study was aimed to report for the first time clinical material from which custom implants, using two different techniques, were manufactured to reconstruct the temporomandibular joint (TMJ)...
June 12, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28681501/systematic-development-of-esthetics-and-function-in-a-young-patient-with-maxillary-dental-aplasia
#20
D Edelhoff, O Prandtner, R Saeidi Pour, A Wichelhaus, A Liebermann
OBJECTIVES: Full-arch rehabilitations in young patients suffering from dental agenesis should compensate for the reduced vertical dimension of occlusion and restore both esthetics and function at minimal biological cost. This requires precise planning and maximum patient compliance during the preprosthetic phase. The pretreatment period with tooth-colored splints promotes a predictable outcome of the final restorations. Clinical considerations: Thanks to better restorative materials and adhesive techniques and increased knowledge of how to preserve sound tooth structures, prosthetic dentistry has increasingly turned toward minimally invasive procedures...
July 6, 2017: Journal of Esthetic and Restorative Dentistry
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