keyword
MENU ▼
Read by QxMD icon Read
search

Cad. Cam

keyword
https://www.readbyqxmd.com/read/27892837/conservative-anterior-partial-coverage-cad-cam-restoration
#1
J T May
Computer-aided design and manufacturing technology enables practitioners to create, in a single appointment, indirect restorations that are esthetic and functionally unique to the patient's situation. The popular effort to perform minimally invasive dentistry using digital techniques with chairside milling can lead dentists to novel individualized restorative treatment. This article demonstrates a conservative anterior partial coverage restoration, utilizing both digital technology and chairside ceramic characterization to achieve an optimal esthetic outcome while preserving healthy tooth structure...
November 28, 2016: Operative Dentistry
https://www.readbyqxmd.com/read/27892564/zirconia-based-dental-ceramics-structure-mechanical-properties-biocompatibility-and-applications
#2
Chandkiram Gautam, Jarin Joyner, Amarendra Gautam, Jitendra Rao, Robert Vajtai
Zirconia (ZrO2) based dental ceramics have been considered to be advantageous materials with adequate mechanical properties for the manufacturing of medical devices. Due to its very high compression strength of 2000 MPa, ZrO2 can resist differing mechanical environments. During the crack propagation on the application of stress on the surface of ZrO2, a crystalline modification diminishes the propagation of cracks. In addition, zirconia's biocompatibility has been studied in vivo, leading to the observation of no adverse response upon the insertion of ZrO2 samples into the bone or muscle...
November 28, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27891569/chair-side-generated-posterior-monolithic-lithium-disilicate-crowns-clinical-survival-after-6%C3%A2-years
#3
Angelika Rauch, Sven Reich, Oliver Schierz
OBJECTIVES: The objective of this prospective clinical study was to evaluate the clinical performance of chair-side generated monolithic lithium disilicate crowns after 72 months. MATERIALS AND METHODS: Forty-one posterior full contour crowns made of lithium disilicate ceramic were inserted in 34 patients with a chair-side CAD/CAM technique. One crown per patient was randomly selected for evaluation at baseline, 6, 12, 24, 36, 48, 60 and 72 months according to the modified US Public Health Service criteria...
November 28, 2016: Clinical Oral Investigations
https://www.readbyqxmd.com/read/27890357/effect-of-cement-space-on-stress-distribution-in-y-tzp-based-crowns
#4
Carlos Eduardo Edwards Rezende, Ana Flávia Sanches Borges, Carla Castiglia Gonzaga, Yuanyuan Duan, José Henrique Rubo, Jason Alan Griggs
OBJECTIVE: To evaluate the stress distribution in bi-layered Y-TZP based crowns, according to the occlusal internal spacing between coping and abutment. METHODS: Twelve premolar shaped Y-TZP copings were made by a CAD/CAM system and seated on an abutment to evaluate the internal fit at the occlusal third using micro-CT images. Considering the fitting range obtained experimentally, two 3D finite element models, consisting on bone tissue, a titanium implant, a zirconia abutment, cement layer and a bi-layered Y-TZP ceramic crown were constructed based on the micro-CT images, one corresponding to the thinnest cement space and other representing the specimen with the thickest cement space obtained experimentally...
November 24, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/27890354/chairside-cad-cam-materials-part-1-measurement-of-elastic-constants-and-microstructural-characterization
#5
Renan Belli, Michael Wendler, Dominique de Ligny, Maria Rita Cicconi, Anselm Petschelt, Herwig Peterlik, Ulrich Lohbauer
OBJECTIVE: A deeper understanding of the mechanical behavior of dental restorative materials requires an insight into the materials elastic constants and microstructure. Here we aim to use complementary methodologies to thoroughly characterize chairside CAD/CAM materials and discuss the benefits and limitations of different analytical strategies. METHODS: Eight commercial CAM/CAM materials, ranging from polycrystalline zirconia (e.max ZirCAD, Ivoclar-Vivadent), reinforced glasses (Vitablocs Mark II, VITA; Empress CAD, Ivoclar-Vivadent) and glass-ceramics (e...
November 24, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/27884403/chairside-cad-cam-materials-part-2-flexural-strength-testing
#6
Michael Wendler, Renan Belli, Anselm Petschelt, Daniel Mevec, Walter Harrer, Tanja Lube, Robert Danzer, Ulrich Lohbauer
OBJECTIVE: Strength is one of the preferred parameters used in dentistry for determining clinical indication of dental restoratives. However, small dimensions of CAD/CAM blocks limit reliable measurements with standardized uniaxial bending tests. The objective of this study was to introduce the ball-on-three-ball (B3B) biaxial strength test for dental for small CAD/CAM block in the context of the size effect on strength predicted by the Weibull theory. METHODS: Eight representative chairside CAD/CAM materials ranging from polycrystalline zirconia (e...
November 21, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/27881329/oral-features-and-computerized-rehabilitation-of-a-young-patient-with-charge-syndrome-using-minimally-invasive-long-term-interim-cad-cam-restorations
#7
Anja Liebermann, Caroline Freitas Rafael, Daniel Edelhoff, Marc Ramberger, Josef Schweiger, Claudia Angela Maziero Volpato, Reza Saeidi Pour
Patients with CHARGE syndrome (where CHARGE stands for coloboma of the iris or retina, heart defects or cardiac malformations, atresia/stenosis of the choanae, retardation of growth and development, genital anomalies, and ear abnormalities) present several orofacial anomalies. Their treatment depends on the specific type of manifestation. To perform the complex oral rehabilitation and achieve a conservative, esthetic, and functional exploration of the definitive treatment goal, computer-aided design and computer-aided manufacturing (CAD-CAM) polymers can be used as long-term interim restorations...
October 27, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27881327/accuracy-of-impression-scanning-compared-with-stone-casts-of-implant-impressions
#8
Ragai Edward Matta, Werner Adler, Manfred Wichmann, Siegfried Martin Heckmann
STATEMENT OF PROBLEM: Accurate virtual implant models are a necessity for the fabrication of precisely fitting superstructures. PURPOSE: The purpose of this in vitro study was to evaluate different methods with which to build an accurate virtual model of a 3-dimensional implant in the oral cavity; this model would then be used for iterative computer-aided design and computer-aided manufacturing (CAD-CAM) procedures. MATERIAL AND METHODS: A titanium master model with 3 rigidly connected implants was manufactured and digitized with a noncontact industrial scanner to obtain a virtual master model...
October 27, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27881321/a-digital-approach-integrating-facial-scanning-in-a-cad-cam-workflow-for-complete-mouth-implant-supported-rehabilitation-of-patients-with-edentulism-a-pilot-clinical-study
#9
Bassam Hassan, Beatriz Gimenez Gonzalez, Ali Tahmaseb, Marcus Greven, Daniel Wismeijer
STATEMENT OF PROBLEM: Complete-mouth implant-supported rehabilitations are challenging because of the multiple surgical and prosthetic steps involved in clinical evaluations to assure passive prosthesis fit and optimal esthetic and functional outcomes. As a result, these rehabilitations are usually associated with substantial clinical time, patient discomfort, and high treatment cost. PURPOSE: The purpose of this pilot clinical study was to evaluate a novel digital approach integrating digital intraoral dental and extraoral facial scanning information to design and mill a computer-aided design and computer-aided manufacturing (CAD-CAM) implant-retained prosthesis for patients with complete edentulism...
October 27, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27881315/cad-cam-implant-supported-fixed-complete-dental-prosthesis-with-titanium-milled-molars-a-clinical-report
#10
Abdulaziz AlHelal, Bader AlBader, Mathew T Kattadiyil, Antoanela Garbacea, Periklis Proussaefs
Implant-supported fixed complete dental prostheses have been associated with a high implant success rate in long-term studies. However, they have also been associated with a high frequency of prosthetic complications. The most frequent and primary prosthetic complication has been the fracture or wear of the occlusal surface of acrylic resin teeth that are typically attached to a metal framework. The design of the framework in this clinical report involved the incorporation of metal occlusal surfaces for the posterior first molars to the framework...
October 27, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27881308/technique-for-transferring-the-path-of-insertion-of-a-removable-partial-denture-to-a-cad-cam-generated-implant-surgical-template
#11
Thomas L Kwun, Michael Razzoog
A technique is described that uses a surveyor, gutta percha points, and a computer-aided design and computer-aided manufacturing (CAD-CAM)-guided implant surgery system to predetermine and transfer the ideal angulation of the implant to be placed.
October 27, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27880028/effect-of-different-surface-treatments-on-bond-strength-of-resin-cement-to-a-cad-cam-restorative-material
#12
Kubilay Barutcigil, Çağatay Barutcigil, Esra Kul, Mehmet Mustafa Özarslan, Ulviye Sebnem Buyukkaplan
PURPOSE: To investigate the effects of various surface treatment methods on the shear bond strength of self-adhesive resin cement to a novel CAD/CAM hybrid ceramic material. MATERIALS AND METHODS: A novel hybrid ceramic restorative material (Vita Enamic) was used in this study. Sixty resin block specimens were prepared and separated into six groups for each surface treatment method (n = 10); group 1: control group, no treatment applied; group 2: sandblasted by 30 μm silicate-coated alumina particles (CoJet Sandblasting); group 3: 50 μm Al2 O3 sandblasting; group 4: 10% hydrofluoric acid; group 5: no surface treatment + universal adhesive (3M Single Bond Universal); group 6: 200 mJ, 10 Hz 2W Er,Cr:YSGG laser treatment...
November 23, 2016: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/27880011/shear-bond-strength-of-repair-systems-to-new-cad-cam-restorative-materials
#13
Özlem Üstün, Işıl Keçik Büyükhatipoğlu, Aslı Seçilmiş
PURPOSE: To evaluate the bond strength of repair systems (Ceramic Repair, Clearfil Repair) to computer-aided design/computer-assisted machining (CAD/CAM) restorative materials (IPS e.max CAD, Vita Suprinity, Vita Enamic, Lava Ultimate). MATERIALS AND METHODS: Thermally aged CAD/CAM restorative material specimens (5000 cycles between 5°C and 55°C) were randomly divided into two groups according to the repair system: Ceramic Repair (37% phosphoric acid + Monobond-S + Heliobond + Tetric N Ceram) or Clearfil Repair (40% phosphoric acid + mixture of Clearfil Porcelain Bond Activator and Clearfil SE Bond Primer + Clearfil SE Bond + Filtek Z250)...
November 23, 2016: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/27870167/design-of-complete-dentures-by-adopting-cad-developed-for-fixed-prostheses
#14
Yanfeng Li, Weili Han, Jing Cao, Yuan Iv, Yue Zhang, Yishi Han, Yi Shen, Zheng Ma, Huanyue Liu
The demand for complete dentures is expected to increase worldwide, but complete dentures are mainly designed and fabricated manually involving a broad series of clinical and laboratory procedures. Therefore, the quality of complete dentures largely depends on the skills of the dentist and technician, leading to difficulty in quality control. Computer-aided design and manufacturing (CAD/CAM) has been used to design and fabricate various dental restorations including dental inlays, veneers, crowns, partial crowns, and fixed partial dentures (FPDs)...
November 21, 2016: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/27866055/microstructure-and-nanoindentation-analyses-of-low-temperature-aging-on-the-zirconia-porcelain-interface
#15
M D Peng, J Q Wei, Y N Wang, Q Li
The aim of the present study was to investigate the effects of low-temperature aging on the micro-mechanical and micro-structural properties of zirconia-porcelain interface. In total, thirty-three Y-TZP zirconia blocks were fabricated by using CAD/CAM technology, veneered with porcelains. Specimens were submitted to low-temperature aging in an autoclave at 134°C, additional 0.2MPa pressure for 0h, 5h, or 10h. Flexural strength was obtained by using three-point bending test. Micro-mechanical properties (nano-hardness (H) and reduced modulus (Er)) were investigated by nanoindentation tests...
November 11, 2016: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/27863860/orofacial-rehabilitation-with-zygomatic-implants-cad-cam-bar-and-magnets-for-patients-with-nasal-cancer-after-rhinectomy-and-partial-maxillectomy
#16
Elizabeth King, Carl Abbott, Lawrence Dovgalski, James Owens
Nasal carcinoma extending into the premaxilla requires radical surgical excision including rhinectomy and partial maxillectomy. Rehabilitation is complex and involves the use of removable prostheses. Three patients treated with zygomatic implants and custom-milled bars to retain an obturator and nasal prosthesis are presented.
November 15, 2016: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/27857080/survey-of-uk-dentists-regarding-the-use-of-cad-cam-technology
#17
D Tran, M Nesbit, H Petridis
Statement of the problem Digital workflows (CAD/CAM) have been introduced in dentistry during recent years. No published information exists on dentists' use and reporting of this technology.Purpose The purpose of this survey was to identify the infiltration of CAD/CAM technology in UK dental practices and to investigate the relationship of various demographic factors to the answers regarding use or non-use of this technology.Materials and methods One thousand and thirty-one online surveys were sent to a sample of UK dentists composing of both users and non-users of CAD/CAM...
November 18, 2016: British Dental Journal
https://www.readbyqxmd.com/read/27855994/flexural-resistance-of-heat-pressed-and-cad-cam-lithium-disilicate-with-different-translucencies
#18
Riccardo Fabian Fonzar, Michele Carrabba, Maurizio Sedda, Marco Ferrari, Cecilia Goracci, Alessandro Vichi
OBJECTIVE: To compare flexural strength of CAD-CAM and heat-pressed lithium disilicate. METHODS: For Pressed specimens (Group A), acrylate polymer blocks were cut with a saw in bars shape. Sprueing, investing and preheating procedures were carried out following manufacturer's instructions. IPS e.max Press ingots (Ivoclar-Vivadent) were divided into subgroups (n=15) according to translucency: A.1=HT-A3; A.2=MT-A3; A.3=LT-A3; A.4=MO2. Ingots were then pressed following manufacturer's instructions...
November 14, 2016: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/27849379/lower-serum-25-hydroxyvitamin-d-is-associated-with-obesity-but-not-common-chronic-conditions-an-observational-study-of-african-american-and-caucasian-male-veterans
#19
Jacqueline L Cartier, Subhash C Kukreja, Elena Barengolts
Objective The study examined whether vitamin D insufficiency is a predictor of prevalent and/or incident common chronic conditions in African American men (AAM) and Caucasian men (CAM). Methods 1,017 men were recruited at an urban VA medical center and followed prospectively for a mean of 5.4 years. Prevalent and incident chronic conditions evaluated were: obesity, type 2 diabetes (T2D), cancer, depression, dementia, and cardiovascular disease (CVD, including coronary artery disease [CAD], cerebrovascular accident [CVA], and congestive heart failure [CHF])...
November 16, 2016: Endocrine Practice
https://www.readbyqxmd.com/read/27848100/stress-distribution-difference-between-lava-ultimate-full-crowns-and-ips-e-max-cad-full-crowns-on-a-natural-tooth-and-on-tooth-shaped-implant-abutments
#20
Ivo Krejci, René Daher
The goal of this short communication is to present finite element analysis comparison of the stress distribution between CAD/CAM full crowns made of Lava Ultimate and of IPS e.max CAD, adhesively luted to natural teeth and to implant abutments with the shape of natural teeth. Six 3D models were prepared using a 3D content-creating software, based on a micro-CT scan of a human mandibular molar. The geometry of the full crown and of the abutment was the same for all models representing Lava Ultimate full crowns (L) and IPS e...
November 15, 2016: Odontology
keyword
keyword
101372
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"