keyword
MENU ▼
Read by QxMD icon Read
search

CAD/CAM

keyword
https://www.readbyqxmd.com/read/29044723/the-effects-of-crown-venting-or-pre-cementing-of-cad-cam-constructed-all-ceramic-crowns-luted-on-ytz-implants-on-marginal-cement-excess
#1
Lucia K Zaugg, Isabella Zehnder, Nadja Rohr, Jens Fischer, Nicola U Zitzmann
OBJECTIVES: The purpose of this study was to analyze the cement excess produced when cementing CAD/CAM-fabricated lithium disilicate (L) or zirconium dioxide (Z) crowns using adhesive cement (A) or resin-modified glass ionomer cement (B). Three different cementation techniques were applied: palatal venting (PV), pre-cementation with custom analogs (CA), and conventional standard procedure (SP). MATERIALS AND METHODS: Seventy-two crowns (36 each material) were assigned to 12 experimental groups depending on the restoration material (L, Z), type of cement (A, B), and cementation technique (PV, CA, SP)...
October 17, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/29042116/marginal-discrepancy-dimensions-of-single-unit-metal-crowns-fabricated-by-using-cad-cam-milled-acrylate-resin-polymer-blocks-or-a-conventional-waxing-technique
#2
David Lalande, Jeffrey A Hodd, John S Brousseau, Van Ramos, Daniel Dunham, Frederick Rueggeberg
STATEMENT OF PROBLEM: Because crowns with open margins are a well-known problem and can lead to complications, it is important to assess the accuracy of margins resulting from the use of a new technique. Currently, data regarding the marginal fit of computer-aided design and computer-aided manufacturing (CAD-CAM) technology to fabricate a complete gold crown (CGC) from a castable acrylate resin polymer block are lacking. PURPOSE: The purpose of this in vitro study was to compare marginal discrepancy widths of CGCs fabricated by using either conventional hand waxing or acrylate resin polymer blocks generated by using CAD-CAM technology...
October 14, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/29033148/medial-approach-for-minimally-invasive-harvesting-of-a-deep-circumflex-iliac-artery-flap-for-reconstruction-of-the-jaw-using-virtual-surgical-planning-and-cad-cam-technology
#3
A Modabber, N Ayoub, A Bock, S C Möhlhenrich, B Lethaus, A Ghassemi, D A Mitchell, F Hölzle
Donor site morbidity is the most common limitation of the deep circumflex iliac artery (DCIA) flap, so the purpose of this paper is to describe a new, minimally-invasive, approach to its harvest using virtual surgical planning and CAD/CAM technology to reduce functional and aesthetic morbidity at the donor site. Virtual surgical planning was based on preoperative computed tomographic data. A newly-designed surgical guide made using CAD/CAM technology was used to transfer the virtual surgical plan to the site of operation...
October 12, 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29032176/three-dimensional-evaluation-of-marginal-and-internal-fit-of-3d-printed-interim-restorations-fabricated-on-different-finish-line-designs
#4
Nawal Alharbi, Saud Alharbi, Vincent M J I Cuijpers, Reham B Osman, Daniel Wismeijer
PurposeTo evaluate the influence of fabrication method and finish line design on marginal and internal fit of full-coverage interim restorations. MethodsFour typodont models of maxillary central-incisor were prepared for full-coverage restorations. Four groups were defined; knife-edge (KE), chamfer (C), rounded-shoulder (RS), rounded-shoulder with bevel (RSB). All preparations were digitally scanned. A total of 80 restorations were fabricated; 20 per group (SLA/3D-printed n=10, milled n=10). All restorations were positioned on the master die and scanned using micro-computed tomography...
October 11, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/29030276/dental-occlusal-surface-supported-titanium-guide-to-assist-cutting-and-drilling-in-mandibular-bilateral-sagittal-split-osteotomy
#5
Charles Savoldelli, Clair Vandersteen, Olivier Dassonville, Joseph Santini
INTRODUCTION: Cutting and drilling guides manufactured using computer-aided design/computer-aided manufacturing (CAD/CAM) technologies have attracted increasing interest in orthognathic surgery, particularly in complex cases. The development of these guides requires virtual surgery planning and three-dimensional modelling before they can be printed in titanium, polyamide, or resin. We report the use of a personalized titanium device to assist bilateral sagittal split osteotomy (BSSO) with or without genioplasty combined with individual implants for repositioning and fixation...
October 10, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29023614/virtual-simulation-of-periodontal-surgery-including-presurgical-cad-cam-fabrication-of-tooth-colored-removable-splints-on-the-basis-of-cbct-data-a-case-report
#6
Jan-Frederik Güth, Ana Elisa Colle Kauling, Josef Schweiger, Jan Kühnisch, Michael Stimmelmayr
Innovative digital diagnostic, design, and manufacturing technologies combined with high-performance polymers offer new possibilities to facilitate complex interdisciplinary treatment procedures. This article reports on the interaction of different digital technologies, from presurgical digital simulation of periodontal surgery to final prosthodontic rehabilitation, in a case of amelogenesis imperfecta in a 17-year-old girl. The aim was to digitally determine the treatment outcome by three-dimensional simulation of the soft tissue removal and to create computer-aided design/computer-assisted manufacture tooth-colored splints before the clinical treatment...
November 2017: International Journal of Periodontics & Restorative Dentistry
https://www.readbyqxmd.com/read/29017760/mixed-mode-fracture-toughness-of-texturized-ls2-glass-ceramics-using-the-three-point-bending-with-eccentric-notch-test
#7
Renan Belli, Michael Wendler, Anselm Petschelt, Ulrich Lohbauer
Here we use the 3-point bending with eccentric notch test (3-PBEN) to investigate the fracture behavior of a pressable and a CAD/CAM lithium disilicate (LS2) glass-ceramics under combined mode-I and mode-II loading. The effect of the bulk texturization in the beams of the pressable LS2 is made visible through the fracture trajectory following the most energetically favorable path dictated by the crystallite alignment. The CAD/CAM LS2 shows an isotropic fracture mode but increasing fracture energy with mode-II contribution, similar to the pressable variant...
October 7, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29016629/three-dimensional-morphology-of-first-molars-in-relation-to-ethnicity-and-the-occurrence-of-cleft-lip-and-palate
#8
Sandra Echtermeyer, Philine H Metelmann, Alexander Hemprich, Karl-Heinz Dannhauer, Karl-Friedrich Krey
OBJECTIVES: This study aims to describe morphological peculiarities of maxillary and mandibular first molars in Europeans, Asians and Europeans with cleft lip and palate. MATERIAL AND METHODS: Reflex microscopy was used to obtain three-dimensional morphometric landmarks from 40 models (11 Europeans and 13 Asians without cleft lip and palate, 16 Europeans with unilateral cleft lip and palate). The cases were examined using traditional morphometry and geometric morphometry, and visualized using thin-plate splines...
2017: PloS One
https://www.readbyqxmd.com/read/28985446/preparation-ferrule-design-effect-on-endocrown-failure-resistance
#9
Michael Einhorn, Nicholas DuVall, Michael Wajdowicz, John Brewster, Howard Roberts
PURPOSE: To evaluate the effect of preparation ferrule inclusion with fracture resistance of mandibular molar endocrowns. MATERIALS AND METHODS: Recently extracted mandibular third molars were randomly divided into 3 groups (n = 12) with the coronal tooth structure removed perpendicular to the root long axis approximately 2 mm above the cemento-enamel junction with a slow-speed diamond saw. The pulp chamber was exposed using a diamond bur in a high-speed handpiece with pulpal remnants removed and canals instrumented using endodontic hand instruments...
October 6, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28983534/from-orthodontic-treatment-plan-to-ultrathin-no-prep-cad-cam-temporary-veneers
#10
Stefano Patroni, Renato Cocconi
Several treatment options are described in the literature to solve the microdontia-related problems of maxillary anterior teeth. These options are often focused on an orthodontic rather than a restorative approach. The case presented here started with an orthodontic phase followed by a restorative one. The aim of the orthodontic phase was to achieve the correct spacing, respecting ideal average tooth proportions. This was done using a digital setup to restore the six anterior teeth, so that an optimal esthetic and functional result was achieved by the end of the orthodontic treatment...
2017: International Journal of Esthetic Dentistry
https://www.readbyqxmd.com/read/28980512/the-accuracy-of-maxillary-positioning-using-digital-model-planning-and-3d-printed-wafers-in-bimaxillary-orthognathic-surgery
#11
Richard R J Cousley, Mark Bainbridge, P Emile Rossouw
OBJECTIVE: Orthognathic wafers may be made using digital model movements and CAD-CAM technology. This paper analysed the accuracy of maxillary movements using this new process. DESIGN: Retrospective study of pre and post-operative cephalograms. PARTICIPANTS: Thirty consecutive orthognathic patients undergoing bimaxillary osteotomies in a UK hospital. METHODS: Jaw movements were planned using cephalometric and Orthoanalyzer™ software...
October 5, 2017: Journal of Orthodontics
https://www.readbyqxmd.com/read/28969918/marginal-and-internal-fit-of-pressed-lithium-disilicate-inlays-fabricated-with-milling-3d-printing-and-conventional-technologies
#12
Foudda R Homsy, Mutlu Özcan, Marwan Khoury, Zeina A K Majzoub
STATEMENT OF PROBLEM: The subtractive and additive computer-aided design and computer-aided manufacturing (CAD-CAM) of lithium disilicate partial coverage restorations is poorly documented. PURPOSE: The purpose of this in vitro study was to compare the marginal and internal fit accuracy of lithium disilicate glass-ceramic inlays fabricated with conventional, milled, and 3-dimensional (3D) printed wax patterns. MATERIAL AND METHODS: A dentoform mandibular first molar was prepared for a mesio-occlusal ceramic inlay...
September 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28969915/accuracy-of-digitally-fabricated-trial-dentures
#13
Timea Wimmer, Marlis Eichberger, Nina Lümkemann, Bogna Stawarczyk
STATEMENT OF PROBLEM: Information about the accuracy of digital computer-aided design and computer-aided manufacturing (CAD-CAM) complete dentures is scarce. PURPOSE: The purpose of this in vitro study was to assess the reproducibility of the occlusion of wax dentures fabricated with digital steps and the contraction behavior of wax trial dentures processed with combined conventional-digital steps. These were compared with those fabricated completely conventionally in terms of storage duration...
September 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28969267/an-in-vitro-comparative-evaluation-of-flexural-strength-of-monolithic-zirconia-after-surface-alteration-utilising-two-different-techniques
#14
Ketaki Janardhan Chougule, Arti Prabodh Wadkar
INTRODUCTION: Chairside surface alteration like grinding is often done by clinicians for adjustment of zirconia restorations. To restore the surface of the prostheses, either polishing or glazing is done. However, there is a controversy which of the surface restoration technique helps regain strength of the restoration. AIM: This study was conducted to evaluate the effects of chairside surface alteration on flexural strength of Monolithic zirconia. MATERIALS AND METHODS: Rectangular zirconia samples (n=30) were prepared by CAD-CAM and divided into three groups...
August 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28967409/conservative-anterior-treatment-with-cad-cam-technology-and-polymer-infiltrated-ceramic-for-a-child-with-amelogenesis-imperfecta-a-2-year-follow-up
#15
Rozalio Halal, Johnny Nohra, Hadi Akel
Amelogenesis imperfecta is a genetic disorder that affects the structure of enamel and consequently the function, esthetics, and psychology of young patients. Restoring the dentition of a child with minimal tooth preparation is achievable with polymer-infiltrated ceramics. The treatment of a 12-year-old child presenting with amelogenesis imperfecta is described. An in-office computer-aided design and computer-aided manufacturing (CAD-CAM) system and polymer-infiltrated ceramic blocks were used in a noninvasive procedure...
September 26, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28967399/marginal-adaptation-and-cad-cam-technology-a-systematic-review-of-restorative-material-and-fabrication-techniques
#16
REVIEW
Sofia Papadiochou, Argirios L Pissiotis
STATEMENT OF PROBLEM: The comparative assessment of computer-aided design and computer-aided manufacturing (CAD-CAM) technology and other fabrication techniques pertaining to marginal adaptation should be documented. Limited evidence exists on the effect of restorative material on the performance of a CAD-CAM system relative to marginal adaptation. PURPOSE: The purpose of this systematic review was to investigate whether the marginal adaptation of CAD-CAM single crowns, fixed dental prostheses, and implant-retained fixed dental prostheses or their infrastructures differs from that obtained by other fabrication techniques using a similar restorative material and whether it depends on the type of restorative material...
September 27, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28967392/cad-cam-high-density-polymer-implant-supported-fixed-diagnostic-prostheses
#17
Burak Yilmaz
Computer-aided design and computer-aided manufacturing (CAD-CAM) complete-arch implant-supported fixed prostheses have become popular in recent years and offer several advantages over traditional fabrication techniques. However, they also present challenges, and careful treatment planning is required, particularly for zirconia implant-supported fixed prostheses layered with feldspathic porcelain. This clinical report describes the use of a CAD-CAM high-density polymer implant-supported diagnostic prosthesis to verify the accuracy of the implant impression and evaluate the maxillomandibular relationship, esthetics, and phonetics of the planned CAD-CAM definitive implant-supported fixed prosthesis before CAM processing...
September 26, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28965991/accuracy-of-computer-assisted-mandibular-reconstructions-using-patient-specific-implants-in-combination-with-cad-cam-fabricated-transfer-keys
#18
Frank Mascha, Karsten Winter, Sebastian Pietzka, Marcus Heufelder, Alexander Schramm, Frank Wilde
BACKGROUND: A new method in mandible reconstruction has recently been developed using patient-specific mandible reconstruction plates (PSMP) after preoperative computer planning using CAD/CAM procedures. To transfer the virtual planned position of the PSMP into the intraoperative situs resection margins and plate position is determined by using surgical guides made by CAD/CAM procedures as well (PSMP-method). METHODS: Mandibular reconstruction with the PSMP-method was performed on 18 patients...
September 5, 2017: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28965682/effect-of-brushing-and-thermocycling-on-the-shade-and-surface-roughness-of-cad-cam-ceramic-restorations
#19
Judy Chia-Chun Yuan, Valentim Adelino Ricardo Barão, Alvin G Wee, Maria F Alfaro, Fatemeh S Afshari, Cortino Sukotjo
STATEMENT OF PROBLEM: The effects of toothbrushing (B) and thermocycling (TC) on the surface texture of different materials with various fabrication processes have been investigated. However, studies of computer-aided design and computer-aided manufacturing (CAD-CAM) ceramic restorations are limited. PURPOSE: The purpose of this in vitro study was to evaluate the effect of B and TC on the color stability and surface roughness of extrinsically characterized and glazed CAD-CAM ceramic restorations...
September 29, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28965679/integrating-hinge-axis-approximation-and-the-virtual-facial-simulation-of-prosthetic-outcomes-for-treatment-with-cad-cam-immediate-dentures-a-clinical-report-of-a-patient-with-microstomia
#20
Katelyn M Kuric, Bryan T Harris, Dean Morton, Bruno Azevedo, Wei-Shao Lin
This clinical report describes a digital workflow using extraoral digital photographs and volumetric datasets from cone beam computed tomography (CBCT) imaging to create a 3-dimensional (3D), virtual patient with photorealistic appearance. In a patient with microstomia, hinge axis approximation, diagnostic casts simulating postextraction alveolar ridge profile, and facial simulation of prosthetic treatment outcome were completed in a 3D, virtual environment. The approach facilitated the diagnosis, communication, and patient acceptance of the treatment of maxillary and mandibular computer-aided design and computer-aided manufacturing (CAD-CAM) of immediate dentures at increased occlusal vertical dimension...
September 29, 2017: Journal of Prosthetic Dentistry
keyword
keyword
11178
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"