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https://www.readbyqxmd.com/read/29226023/evaluating-the-whitening-and-microstructural-effects-of-a-novel-whitening-strip-on-porcelain-and-composite-dental-materials
#1
Thair Takesh, Anik Sargsyan, Matthew Lee, Afarin Anbarani, Jessica Ho, Petra Wilder-Smith
Aims: The aim of this project was to evaluate the effects of 2 different whitening strips on color, microstructure and roughness of tea stained porcelain and composite surfaces. Methods: 54 porcelain and 72 composite chips served as samples for timed application of over-the-counter (OTC) test or control dental whitening strips. Chips were divided randomly into three groups of 18 porcelain and 24 composite chips each. Of these groups, 1 porcelain and 1 composite set served as controls...
August 2017: Dentistry: Current Research
https://www.readbyqxmd.com/read/29201805/porcelain-gallbladder
#2
Apoorv Goel, Ayush Agarwal, Shalabh Gupta, Tripta S Bhagat, Gaurav Kumar, Atul K Gupta
Porcelain gallbladder or calcified gallbladder is a rare entity and is considered as the end stage of chronic cholecystitis. This disease is rarely diagnosed preoperatively and usually mimics carcinoma gallbladder. Hereby, we present a rare and interesting case of porcelain gallbladder that was diagnosed preoperatively and managed by cholecystectomy. How to cite this article: Goel A, Agarwal A, Gupta S, Bhagat TS, Kumar G, Gupta AK. Porcelain Gallbladder. Euroasian J Hepato-Gastroenterol 2017;7(2):181-182.
July 2017: Euroasian Journal of Hepato-Gastroenterology
https://www.readbyqxmd.com/read/29199344/-eight-year-clinical-results-of-sla-surface-implant-for-dentition-defect
#3
Ming-Ming Ren, Li-Ping Liu, Zhong-Hao Liu
PURPOSE: To evaluate the clinical effect of titanium implants with SLA surface preparation for partial prostheses. METHODS: One hundred and ninety-one implants with SLA surface preparation were implanted in 130 patients with dentition defect who required dental repair at Yantai Stomatologic Hospital Implant Center. Successful rate of the implant, changes of soft and hard tissue around the implants as well as the stability of the superstructure were recorded and evaluated by regular clinical and X-ray examinations...
August 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29199338/-a-clinical-analysis-of-screw-retained-implant-supported-casted-integrated-abutment-crowns-in-the-molar-region-with-limited-interocclusal-space
#4
Dong-Lei Chen, Jing-Ming Xu, Zi-Qiang Wu, Qiao-Na Wang, Pei Wang, Chun-Bo Tang
PURPOSE: To observe the clinical effects of screw-retained implant-supported casted abutment integrated crowns (IACs) in the molar region with limited interocclusal space. METHODS: This study involved 507 implants in 376 patients with limited interocclusal space in the molar region. All implants were inserted to the jaw by standard one-stage protocol. Screw-retained IACs were used as the final prosthesis. With 6 to 24 months follow-up, the clinical effects of screw-retained IACs were recorded and analyzed using SPSS 17...
August 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29195699/there-seem-to-be-no-differences-in-enamel-wear-among-natural-teeth-opposing-monolithic-zirconia-crowns-porcelain-fused-to-metal-crowns-and-other-natural-teeth
#5
Romina Brignardello-Petersen
No abstract text is available yet for this article.
November 23, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/29188699/ceramic-fracture-in-metal-ceramic-restorations-the-aetiology
#6
Ayesha Aslam, Danish Azeem Khan, Syed Hammad Hassan, Bilal Ahmed
All dental restorations are liable to failure during function. Failure could be biologic, aesthetic, mechanical or a combination. Ceramic restorations in particular, including metal-ceramics, are prone to mechanical fracture, especially the fracture of veneering porcelain. Fracture of a metal-ceramic restoration jeopardizes function as well as aesthetics. It is equally onerous to manage for both patient and dentist. Optimal management of such cases requires a detailed knowledge of the aetiology behind this phenomenon...
May 2017: Dental Update
https://www.readbyqxmd.com/read/29183670/using-glass-graded-zirconia-to-increase-delamination-growth-resistance-in-porcelain-zirconia-dental-structures
#7
Herzl Chai, Adam J Mieleszko, Stephen J Chu, Yu Zhang
OBJECTIVE: Porcelain fused to zirconia (PFZ) restorations are widely used in prosthetic dentistry. However, their tendency to delaminate along the P/Z interface remains a practical problem so that assessing and improving the interfacial strength are important design aspects. This work examines the effect of modifying the zirconia veneering surface with an in-house felspathic glass on the interfacial fracture resistance of fused P/Z. METHODS: Three material systems are studied: porcelain fused to zirconia (control) and porcelain fused to glass-graded zirconia with and without the presence of a glass interlayer...
November 25, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/29153772/effectiveness-and-safety-of-transcatheter-aortic-valve-implantation-for-aortic-stenosis-in-patients-with-porcelain-aorta
#8
Fernando Ramirez-Del Val, Sameer A Hirji, Maroun Yammine, Julius I Ejiofor, Siobhan McGurk, Anthony Norman, Prem Shekar, Sary Aranki, Deepak L Bhatt, Pinak Shah, Lawrence H Cohn, Tsuyoshi Kaneko
Surgical aortic valve replacement (SAVR) in patients with porcelain aorta is considered a high-risk procedure. Hence, transcatheter aortic valve implantation (TAVI) is emerging as the intervention of choice. However, there is a paucity of data directly comparing TAVI with SAVR in patients with porcelain aorta. We compared outcomes of TAVI versus SAVR in high-risk patients with porcelain between March 2012 and June 2015. The TAVI group included 54 patients, whereas 130 SAVR patients with porcelain aorta were identified (operated on between 2004 and 2015)...
October 10, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/29147823/primary-peri-implant-oral-intra-epithelial-neoplasia-carcinoma-in-situ-a-case-report-considering-risk-factors-for-carcinogenesis
#9
Makoto Noguchi, Hiroaki Tsuno, Risa Ishizaka, Kumiko Fujiwara, Shuichi Imaue, Kei Tomihara, Takashi Minamisaka
BACKGROUND: Major risk factors for oral squamous cell carcinoma (SCC) are tobacco smoking, a betel quid chewing habit, and heavy alcohol consumption. However, around 15% of oral SCCs cannot be explained by these risk factors. Although oral SCC associated with dental implants is quite rare, there has been a recent gradual accumulation of reports about it. Here, we report a case of primary peri-implant oral intra-epithelial neoplasia/carcinoma in situ (OIN/CIS) in a woman without the major risk factors for oral SCC...
November 16, 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/29144878/effect-of-preparation-designs-on-the-prognosis-of-porcelain-laminate-veneers-a-systematic-review-and-meta-analysis
#10
N Hong, H Yang, J Li, S Wu, Y Li
OBJECTIVE: To investigate the association between preparation designs and prognosis of porcelain laminate veneers (PLVs). METHODS: Electronic and manual literature searches were performed in Medline, Embase, CENTRAL, and Scopus databases for randomized controlled trials and retrospective and prospective cohort studies comparing any two of three preparation designs. The quality of the included studies was assessed using the Newcastle-Ottawa scale. Pooled hazard ratios and risk ratios were used to evaluate the difference between two preparation designs...
November 2017: Operative Dentistry
https://www.readbyqxmd.com/read/29123628/evaluation-of-different-types-of-lasers-in-surface-conditioning-of-porcelains-a-review-article
#11
REVIEW
Amirhossin Mirhashemi, Nastaran Sharifi, Mohammad Moharrami, Nasim Chiniforush
To achieve proper bond strength for porcelains, adequate surface roughness is essential, which is traditionally gained by sandblasting or acid etching with hydrofluoric (HF) acid. Nowadays with the development of laser systems, serious efforts were made to apply this new instrument for surface etching of porcelains due to easy usage, safety, and more efficiency. There are different kinds of lasers and porcelains, so choosing the ones which will be good match for each other is crucial. Besides that, changing the irradiation setting can be beneficial as well...
2017: Journal of Lasers in Medical Sciences
https://www.readbyqxmd.com/read/29122615/ultrastructural-and-molecular-characterization-of-vairimorpha-austropotamobii-sp-nov-microsporidia-burenellidae-and-thelohania-contejeani-microsporidia-thelohaniidae-two-parasites-of-the-white-clawed-crayfish-austropotamobius-pallipes-complex-decapoda-astacidae
#12
Tobia Pretto, Francesco Montesi, Daniela Ghia, Valeria Berton, Miriam Abbadi, Michele Gastaldelli, Amedeo Manfrin, Gianluca Fea
The microsporidiosis of the endangered white-clawed crayfish Austropotamobius pallipes complex has generally been attributed to only one species, Thelohania contejeani, the agent of porcelain disease. Species identification was mostly assessed by macroscopic examination or microscopic evaluation of muscle samples rather than by molecular or ultrastructural analyses. A survey conducted on A. pallipes complex populations in Northern Italy highlighted the presence of two different microsporidia causing similar muscular lesions, T...
November 6, 2017: Journal of Invertebrate Pathology
https://www.readbyqxmd.com/read/29116000/effect-of-mouthrinses-on-color-stability-of-monolithic-zirconia-and-feldspathic-ceramic-an-in-vitro-study
#13
Reza Derafshi, Hooman Khorshidi, Mohamadhasan Kalantari, Ilyad Ghaffarlou
BACKGROUND: Patients susceptible to periodontal disease and dental caries, including those who undergo fixed prosthodontic treatments use chemical plaque control agents. However, these mouthrinses may result in adverse effects such as discoloration of the restorative materials. The aim of this study was to compare the color stability of monolithic zirconia and feldspathic porcelain after immersion in two different mouthrinses: 0.2% Chlorhexidine digluconate (CHX), or Listerine®. Color change was evaluated by color spectrophotometer and according to the Commission Internationale de l'Eclairage (CIELab) system...
November 7, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/29108646/allergic-contact-dermatitis-caused-by-acrylates-in-long-lasting-nail-polish
#14
M E Gatica-Ortega, M A Pastor-Nieto, J F Silvestre-Salvador
The first reported cases of allergic contact dermatitis from acrylates in manicure procedures in relation to the application of porcelain nails were published decades ago. The frequency of sensitization has increased due to the introduction of the so-called permanent nail polish containing photo-bonded acrylates, mainly involving the beauticians who apply them, and to a lesser extent, the consumers. The recent commercialized permanent polish kits for domestic use could trigger even higher degrees of sensitization...
November 3, 2017: Actas Dermo-sifiliográficas
https://www.readbyqxmd.com/read/29103897/material-analysis-of-bottom-ash-from-waste-to-energy-plants
#15
Michal Šyc, Aneta Krausová, Petra Kameníková, Radovan Šomplák, Martin Pavlas, Boleslav Zach, Michael Pohořelý, Karel Svoboda, Miroslav Punčochář
Bottom ash (BA) from waste-to-energy (WtE) plants contains valuable components, particularly ferrous (Fe) and non-ferrous (NFe) metals, which can be recovered. To assess the resource recovery potential of BA in the Czech Republic, it was necessary to obtain its detailed material composition. This paper presents the material composition of BA samples from all three Czech WtE plants. It was found that the BA contained 9.2-22.7% glass, 1.8-5.1% ceramics and porcelain, 0.2-1.0% unburnt organic matter, 10.2-16.3% magnetic fraction, 6...
November 2, 2017: Waste Management
https://www.readbyqxmd.com/read/29098259/-clinical-efficacy-and-effects-of-cad-cam-zirconia-all-ceramic-crown-and-metal-ceramic-crown-restoration-on-periodontal-tissues
#16
Xin-Yi Xu, Yin-Lian Zhang, Fang-Hui Geng
PURPOSE: To investigate the clinical efficacy and effects of CAD/CAM zirconia all-ceramic crown, cobalt-chromium alloy and silver-palladium alloy porcelain-fused-to-metal crown restorations on periodontal tissues. METHODS: Forty-nine teeth with crowns in 46 patients were randomly assigned into CAD/CAM zirconia all-ceramic crown group, cobalt-chromium alloy porcelain-fused-to-metal crown group and silver-palladium alloy porcelain-fused-to-metal crown group. The amounts of GCF, TNF-α and IL-6 were analyzed before and 12 months after restorations, and the clinical efficacy was evaluated...
June 2017: Shanghai Kou Qiang Yi Xue, Shanghai Journal of Stomatology
https://www.readbyqxmd.com/read/29091015/patient-reported-and-clinical-outcomes-of-implant-supported-fixed-complete-dental-prostheses-a-comparison-of-metal-acrylic-milled-zirconia-and-retrievable-crown-prostheses
#17
Virginia Lea Hogsett Box, Cortino Sukotjo, Kent L Knoernschild, Stephen D Campbell, Fatemeh S Afshari
The purpose of this retrospective study was to assess the incidence of biologic and technical complications for implant-supported fixed complete dental prostheses (IFCDPs) and their relationship to oral health-related quality of life (OHQoL) and patient-reported outcomes. Metal-acrylic (MA), retrievable crown (RC), monolithic zirconia (MZ), and porcelain veneered zirconia (PVZ) prostheses were included. Patients who received an IFCDP at least one year prior to recall were identified. Exclusion criteria were: (1) an opposing complete denture and (2) time in service >70 months...
November 1, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29080960/protocol-for-mandibular-reconstruction-with-zygomatic-implants-zygomatic-mandibular-implant
#18
Ruben Muñoz, Golaszewski Gajos, Jose Bladimir, Diaz Carvajal, Alvaro Luis, Grace Del Valle Speranza
INTRODUCTION: This study describes a modified protocol using transmandibular zygomatic implants with immediate occlusal loading for the comprehensive dental rehabilitation of previously reconstructed mandibular defects and reports preliminary results of this modified protocol. MATERIALS AND METHODS: Fifteen patients (6 female and 9 male), with a mean of age 40.26 years (range 12 to 68 years), had previously undergone immediate mandibular reconstruction using either autologous bone grafting, bone transport, or microvascular free-flap reconstruction for a variety of diagnoses...
October 28, 2017: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29069155/effects-of-porcelain-thickness-on-the-flexural-strength-and-crack-propagation-in-a-bilayered-zirconia-system
#19
Viviane Maria Gonçalves de Figueiredo, Sarina Maciel Braga Pereira, Eduardo Bressiani, Márcia Carneiro Valera, Marco Antônio Bottino, Yu Zhang, Renata Marques de Melo
OBJECTIVE: This study evaluated the influence of porcelain (VM9, VITA Zahnfabrik, Germany) thickness on the flexural strength and crack propagation in bilayered zirconia systems (YZ, VITA Zahnfabrik, Germany). MATERIAL AND METHODS: Thirty zirconia bars (20.0x4.0x1.0 mm) and six zirconia blocks (12.0x7.5x1.2 mm) were prepared and veneered with porcelain with different thickness: 1 mm, 2 mm, or 3 mm. The bars of each experimental group (n=10) were subjected to four-point flexural strength testing...
September 2017: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29042241/randomized-clinical-study-of-wear-of-enamel-antagonists-against-polished-monolithic-zirconia-crowns
#20
J F Esquivel-Upshaw, M J Kim, S M Hsu, N Abdulhameed, R Jenkins, D Neal, F Ren, A E Clark
OBJECTIVES: To test the hypothesis that there is no difference in the in vivo maximum wear of enamel opposing monolithic zirconia crowns, enamel opposing porcelain fused to metal crowns and enamel opposing enamel. METHODS: Thirty patients needing single crowns were randomized to receive either a monolithic zirconia or metal-ceramic crown. Two non-restored opposing teeth in the same quadrants were identified to serve as enamel controls. After cementation, quadrants were scanned for baseline data...
October 16, 2017: Journal of Dentistry
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