keyword
https://read.qxmd.com/read/36547541/comparison-of-regular-and-speed-sintering-on-low-temperature-degradation-and-fatigue-resistance-of-translucent-zirconia-crowns-for-implants-an-in-vitro-study
#1
JOURNAL ARTICLE
Suchada Kongkiatkamon, Chaimongkon Peampring
BACKGROUND: Although there are a few studies which compare fast and slow sintering in normal zirconia crowns, it is essential to compare the cracks and load-bearing capacity in zirconia screw-retained implant crowns between regular and speed sintering protocols. This research aimed to compare the surface structure, cracks, and load-bearing capacity in zirconia screw-retained implant crowns between regular sintering (RS) and speed sintering (SS) protocol with and without cyclic loading (fatigue)...
December 8, 2022: Journal of Functional Biomaterials
https://read.qxmd.com/read/35095042/comparison-of-full-and-partial-coverage-crowns-with-cad-cam-leucite-reinforced-ceramic-blocks-on-fracture-resistance-and-fractographic-analysis
#2
JOURNAL ARTICLE
Carlos A Jurado, Firas Mourad, Daniel Alberto Cortes Trevino, Diogo N Gouveia, Jared Hyer, Amira Elgreatly, Ahmed M Mahrous, Franklin Garcia-Godoy, Akimasa Tsujimoto
To compare full and partial coverage crowns made with different CAD/CAM leucite reinforced ceramic blocks on fracture resistance and fractographic analysis. Full coverage and partial coverage crowns with finish line at 2 mm and 4 mm above the gingiva for molars made with IPS Empress CAD and Rosetta BM. After fatigue process, the fracture test and fractographic analysis were conducted. Although the fracture resistance of IPS Empress crowns did not show any statistical differences regardless of the design, both the partial coverage crowns fabricated using Rosetta BM showed significantly higher load at break and peak load than the full coverage crown...
April 1, 2022: Dental Materials Journal
https://read.qxmd.com/read/34297866/comparison-of-fracture-resistance-for-chairside-cad-cam-lithium-disilicate-crowns-and-overlays-with-different-designs
#3
JOURNAL ARTICLE
Carlos Alberto Jurado, Zinaida Kaleinikova, Akimasa Tsujimoto, Daniel Alberto Cortés Treviño, Robert R Seghi, Damian J Lee
PURPOSE: To determine the fracture resistance of chairside computer-aided design and computer-assisted manufacturing (CAD/CAM) lithium disilicate full coverage crowns and two different designs of overlay restorations for premolars. MATERIALS AND METHODS: CAD/CAM lithium disilicate (IPS e.max CAD for CEREC/HT A1 C14, Ivoclar Vivadent) restorations (15 specimens/group) with 1.5 mm occlusal thickness and 1.0 mm chamfer were designed and fabricated with a chairside CAD/CAM system (CEREC, Dentsply Sirona)...
April 2022: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://read.qxmd.com/read/33763262/management-of-a-rare-case-of-geminated-and-fused-central-incisors-in-the-same-maxillary-dental-arch
#4
Anas Alyahya, Humam Karkoutly, Hussam Milly
A 27-year-old man presented with developmental disorders in the maxillary incisors and asymmetric smile. Differential diagnosis between geminated and fused maxillary central incisors was conducted using cone-beam computed tomography (CBCT). The complexities of root canal system was handled using suitable shaping instruments and ultrasonic activation tips. Root apexes were sealed with mineral trioxide aggregate plugs. The anterior maxillary gingiva was surgically recontoured, and CAD/CAM Zirconia crowns were placed after the gingival healing phase...
2021: Case Reports in Dentistry
https://read.qxmd.com/read/33198990/effect-of-varying-levels-of-expertise-on-the-reliability-and-reproducibility-of-the-digital-waxing-of-single-crowns-a-preliminary-in-vitro-study
#5
JOURNAL ARTICLE
Juliana No-Cortes, Andrea Son, Ana Paula Ayres, Roberto Adrian Markarian, Nikolai J Attard, Arthur Rodriguez Gonzalez Cortes
STATEMENT OF PROBLEM: The digital waxing of single crowns can be affected by the quality of intraoral scans and use of computer-aided design (CAD) software programs. However, clinical outcomes of the resulting crowns are also affected by computer-aided manufacturing (CAM) methodologies. Studies on the effect of different levels of expertise on digital waxing are lacking. PURPOSE: The purpose of this in vitro study was to assess the impact of different levels of expertise on the reliability and reproducibility of margin outlining during digital waxing...
January 2022: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/32069345/undetected-excess-cement-at-marginal-areas-of-zirconia-crown-copings-in-vitro-analysis-of-two-luting-agents-and-their-influence-on-retention
#6
JOURNAL ARTICLE
Davide Augusti, Gabriele Augusti, Dino Re
PURPOSE: To evaluate the amount of residual cement (ECL) around the margins of zirconia crown copings after careful luting and cleaning procedures and to investigate these factors in relation to two tested luting materials. MATERIALS AND METHODS: An experimental model of a maxillary arch was selected for this in vitro study. The maxillary first molar was prepared to receive an all-ceramic, single, full-crown restoration with a finish line located 1 mm below the artificial gingiva...
March 2020: International Journal of Prosthodontics
https://read.qxmd.com/read/31860911/comparison-of-peri-implant-soft-tissue-color-with-the-use-of-pink-neck-vs-gray-implants-and-abutments-based-on-soft-tissue-thickness-a-6-month-follow-up-study
#7
RANDOMIZED CONTROLLED TRIAL
Nurit Bittner, Ulrike Schulze-Späte, Cleber Silva, John D Da Silva, David M Kim, Dennis Tarnow, Shigemi Ishikawa-Nagai, Mindy S Gil
PURPOSE: To compare the optical effects of an immediately placed anodized pink-neck implant and abutment vs a conventional gray implant and abutment in relation to soft tissue thickness 6 months after the restoration was completed. MATERIALS AND METHODS: Forty patients with a hopeless maxillary anterior tooth received an immediate implant and an immediate provisional or custom healing abutment after flapless extraction. Participants were randomized to receive either a conventional titanium implant (control) or a pink-neck implant (test)...
January 2020: International Journal of Prosthodontics
https://read.qxmd.com/read/30892292/comparison-of-the-color-appearance-of-peri-implant-soft-tissue-with-natural-gingiva-using-anodized-pink-neck-implants-and-pink-abutments-a-prospective-clinical-trial
#8
RANDOMIZED CONTROLLED TRIAL
Mindy S Gil, Shigemi Ishikawa-Nagai, Hawazin W Elani, John D Da Silva, David M Kim, Dennis Tarnow, Ulrike Schulze-Späte, Cleber Silva, Nurit Bittner
PURPOSE: The aim of this study was to assess the visual effects of pink-neck implants and pink abutments with respect to the color of natural gingiva. The distribution pattern and magnitude of CIELAB color difference coordinates were studied. MATERIALS AND METHODS: Forty subjects with a tooth in the maxillary esthetic zone deemed hopeless were recruited. Patients were randomized to either a conventional gray implant or a pink-neck implant. The hopeless tooth was removed and patients received an immediate implant along with an immediate customized provisional prosthesis...
May 2019: International Journal of Oral & Maxillofacial Implants
https://read.qxmd.com/read/28434556/cad-cam-techniques-help-in-the-rebuilding-of-ideal-marginal-gingiva-contours-of-anterior-maxillary-teeth-a-case-report
#9
JOURNAL ARTICLE
Jiayue Yin, Dan Liu, Yuehua Huang, Lin Wu, Xiaolin Tang
BACKGROUND AND OVERVIEW: "Pink esthetics," which are considered to be as important as "white esthetics," have attracted increasing attention. To date, clinicians rarely have applied computer-aided design and computer-aided manufacturing (CAD/CAM) techniques in the rebuilding of the contour of the marginal gingiva in the esthetic zone. CASE DESCRIPTION: In this case report, the authors describe a female patient who had gingival inflammation and an asymmetrical contour of the marginal gingiva of the anterior maxillary teeth because previously placed ceramic crowns violated the biological width...
November 2017: Journal of the American Dental Association
https://read.qxmd.com/read/27476829/stock-versus-cad-cam-customized-zirconia-implant-abutments-clinical-and-patient-based-outcomes-in-a-randomized-controlled-clinical-trial
#10
RANDOMIZED CONTROLLED TRIAL
Ulf Schepke, Henny J A Meijer, Wouter Kerdijk, Gerry M Raghoebar, Marco Cune
BACKGROUND: Single-tooth replacement often requires a prefabricated dental implant and a customized crown. The benefits of individualization of the abutment remain unclear. PURPOSE: This randomized controlled clinical trial aims to study potential benefits of individualization of zirconia implant abutments with respect to preservation of marginal bone level and several clinical and patient-based outcome measures. MATERIAL AND METHODS: Fifty participants with a missing premolar were included and randomly assigned to standard (ZirDesign, DentsplySirona Implants, Mölndal, Sweden) or computer aided design/computer aided manufacturing (CAD/CAM) customized (Atlantis, DentsplySirona Implants, Mölndal, Sweden) zirconia abutment therapy...
February 2017: Clinical Implant Dentistry and related Research
https://read.qxmd.com/read/25558762/provisional-polymer-based-cad-cam-implant-superstructures
#11
JOURNAL ARTICLE
A Kurbad
The prosthetic restoration of implants to obtain an esthetically balanced outcome is an extremely complex process--especially in terms of effective soft-tissue management. So-called hybrid abutment crowns, which can be made from polymer milling blocks in an uncomplicated process and used for immediate provisional restoration, represent an advance in the efficient production of superstructures.
2014: International Journal of Computerized Dentistry
https://read.qxmd.com/read/25198877/guided-implant-surgery-with-placement-of-a-presurgical-cad-cam-patient-specific-abutment-and-provisional-in-the-esthetic-zone
#12
JOURNAL ARTICLE
George A Mandelaris, Scott D Vlk
Parallel use of implant treatment planning software and cone-beam computed tomography (CBCT) can, using certain criteria, consolidate steps and streamline tooth replacement strategies. The authors describe such a case in the esthetic zone whereby flapless extraction and immediate implant placement using CT-guided surgery were performed simultaneously, with placement of a computer-aided design/computer-aided manufactured (CAD/CAM) patient-specific abutment and non-occlusal function provisional in a single visit (supporting the "one-abutment, one-time" concept)...
July 2014: Compendium of Continuing Education in Dentistry
https://read.qxmd.com/read/25022036/cad-cam-implant-provisional-use-reshapes-gingival-tissues-while-improving-esthetics-and-hygiene
#13
JOURNAL ARTICLE
Richard S Callan, Jeril R Cooper
No abstract text is available yet for this article.
May 2014: Dental Assistant: Journal of the American Dental Assistants Association
https://read.qxmd.com/read/24980739/clinical-outcomes-of-three-different-crown-systems-with-cad-cam-technology
#14
RANDOMIZED CONTROLLED TRIAL
Emily R Batson, Lyndon F Cooper, Ibrahim Duqum, Gustavo Mendonça
STATEMENT OF PROBLEM: Computer-aided design and computer-aided manufacturing (CAD/CAM) generated restorations are gaining popularity. However, limited clinical evidence is available for single-unit posterior CAD/CAM restorations fabricated with established and newer crown materials. PURPOSE: The purpose of this clinical study was to assess the restoration quality of and gingival response to CAD/CAM fabricated posterior single-tooth restorations with different processing technologies...
October 2014: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/24555408/cad-cam-based-polymer-provisionals-as-treatment-adjuncts
#15
JOURNAL ARTICLE
Andreas Kurbad
The role and function of provisional restorations has changed significantly in recent years. The reasons include the improvement of material properties and the CAD/CAM production option using polymer blanks, which are offered by various manufacturers. Besides their classic indications in crown and bridge prosthodontics, provisional restorations are now used for soft-tissue management, preparation and adaptation in complex restorations that include changes in vertical relations, and as mock-ups in esthetic dentistry...
2013: International Journal of Computerized Dentistry
https://read.qxmd.com/read/24433839/the-use-of-cad-cam-technology-to-fabricate-a-custom-ceramic-implant-abutment-a-clinical-report
#16
JOURNAL ARTICLE
Martinna de Mendonça e Bertolini, Juan Kempen, Eduardo José Veras Lourenço, Daniel de Moraes Telles
Well-placed dental implants are a prerequisite of functional and esthetically successful dental implant-supported crowns. The presence of soft tissue is essential for excellent esthetics because the dental implant or titanium abutment may become visible if the soft-tissue contour is not acceptable. This clinical report describes the use of a custom ceramic implant abutment designed with computer-aided design and computer-aided manufacturing (CAD/CAM) technology by milling a zirconia framework that was cemented extraorally to a prefabricated titanium abutment with a reduced diameter...
May 2014: Journal of Prosthetic Dentistry
https://read.qxmd.com/read/24385523/reliability-of-cad-cam-technology-in-assessing-crown-preparations-in-a-preclinical-dental-school-environment
#17
JOURNAL ARTICLE
Richard S Callan, John S Blalock, Jeril R Cooper, John F Coleman, Stephen W Looney
In order to use CAD CAM (Computer Aided Design, Computer Aided Manufacturing) technology as an assessment tool when evaluating the preclinical performance of dental students, it is imperative that one has confidence in the reliability of the process. In this study, a variety of alignment methods were compared to determine both the consistency and accuracy of each method. Although the "Tooth Dots Diagonal" method exhibited the best precision (coefficient of variation=5.4 percent), it also represented the least accurate method when compared to the other methods tested...
January 2014: Journal of Dental Education
https://read.qxmd.com/read/24100906/-computer-aided-design-and-computer-aided-manufacture-of-template-for-crown-lengthening
#18
JOURNAL ARTICLE
Yan-bo Zhao, Lin Wu, Xiao-lin Tang, Chen Guo
PURPOSE: To introduce a method applied in computer aided design and computer aided manufacture (CAD-CAM) of template for crown lengthening. METHODS: Point cloud data of dental stone model of the patient in the plan of crown lengthening surgery was obtained by laser scanning. The following processes were carried out, constructing 3-D curve of the gingiva, drawing template outline on the triangle mesh model, shelling it for 3-D model of template, and transferring the data to rapid prototyping equipment for manufacture...
August 2013: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://read.qxmd.com/read/22842262/a-cad-cam-prosthodontic-option-and-gingival-zenith-position-for-a-rotated-maxillary-right-central-incisor-an-evaluation
#19
JOURNAL ARTICLE
Mukesh Singhal, Romil Singhal
OBJECTIVE: Even with beautifully done restorations, an unattractive gingival zenith position, can negatively affect the smile of a person. In this short communication we describe the treatment of a rotated maxillary right central incisor using a digital photographic approach instead of the conventional approach. BACKGROUND: The conjecture literature on prosthodontic considerations and gingival zenith position in cases of rotated maxillary central incisors is sparse...
January 2012: Indian Journal of Dental Research: Official Publication of Indian Society for Dental Research
https://read.qxmd.com/read/19274955/recreating-an-aesthetic-smile-multidisciplinary-and-metal-free-approach-using-cad-cam-technology
#20
JOURNAL ARTICLE
Giacomo Fabbri
The aesthetic rehabilitation of patients with functionally compromised dentition frequently involves a multidisciplinary approach. A correct aesthetic diagnosis, treatment plan, and careful material selection are critical factors in successful restoration. A team approach that includes the clinicians, the laboratory technician, and the patient is essential to achieve the desired result. The following case presentation demonstrates a successful multidisciplinary approach used to recreate an aesthetic smile in a young patient with functionally and aesthetically compromised anterior maxillary dentition...
November 2008: Practical Procedures & Aesthetic Dentistry: PPAD
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