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https://www.readbyqxmd.com/read/28528141/portland-cement-induces-human-periodontal-ligament-cells-to-differentiate-by-upregulating-mir-146a
#1
Min-Ching Wang, Li-Yin Yeh, Wen-Yu Shih, Wan-Chun Li, Kuo-Wei Chang, Shu-Chun Lin
BACKGROUND/PURPOSE: Bioaggregates such as Portland cement (PC) can be an economical alternative for mineral trioxide aggregate (MTA) with additional benefit of less discoloration. MTA has been known to induce differentiations of several dental cells. MicroRNAs are important regulators of biological processes, including differentiation, physiologic homeostasis, and disease progression. This study is to explore how PC enhances the differentiation of periodontal ligament (PDL) cells in microRNAs level...
May 18, 2017: Journal of the Formosan Medical Association, Taiwan Yi Zhi
https://www.readbyqxmd.com/read/28527531/titanium-dioxide-nanotubes-addition-to-self-adhesive-resin-cement-effect-on-physical-and-biological-properties
#2
Carla M Ramos-Tonello, Paulo N Lisboa-Filho, Larisa B Arruda, Cintia K Tokuhara, Rodrigo C Oliveira, Adilson Y Furuse, José H Rubo, Ana Flávia S Borges
OBJECTIVES: This study has investigated the influence of Titanium dioxide nanotubes (TiO2-nt) addition to self-adhesive resin cement on the degree of conversion, water sorption, and water solubility, mechanical and biological properties. METHODS: A commercially available auto-adhesive resin cement (RelyX U200™, 3M ESPE) was reinforced with varying amounts of nanotubes (0.3, 0.6, 0.9wt%) and evaluated at different curing modes (self- and dual cure). The DC in different times (3, 6, 9, 12 and 15min), water sorption (Ws) and solubility (Sl), 3-point flexural strength (σf), elastic modulus (E), Knoop microhardness (H) and viability of NIH/3T3 fibroblasts were performed to characterize the resin cement...
May 17, 2017: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/28527193/comparison-of-digital-intraoral-scanners-by-single-image-capture-system-and-full-color-movie-system
#3
Meguru Yamamoto, Yu Kataoka, Atsufumi Manabe
BACKGROUND: The use of dental computer-aided design/computer-aided manufacturing (CAD/CAM) restoration is rapidly increasing. OBJECTIVE: This study was performed to evaluate the marginal and internal cement thickness and the adhesive gap of internal cavities comprising CAD/CAM materials using two digital impression acquisition methods and micro-computed tomography. METHODS: Images obtained by a single-image acquisition system (Bluecam Ver...
2017: Bio-medical Materials and Engineering
https://www.readbyqxmd.com/read/28513894/the-dentoalveolar-prosthesis-a-novel-approach-in-the-reconstruction-of-hard-and-soft-tissue-deficiencies
#4
James K Doll, Peter Barndt, Gerald Grant
A clinical problem commonly encountered by the advanced restorative dentist is a requirement to replace missing teeth and the supporting alveolus in areas adjacent to healthy or manageable dentition. A potential solution could utilize a dentoalveolar prosthesis fabricated on two or more implants in the edentulous area. The implant substructure, or framework, may be cast, milled, or selectively laser melted from a variety of metals. A superstructure, or ceramic overlay incorporating a ceramic or composite resin gingival tissue component, is constructed to fit over the implant substructure and luted to the substructure with resin cement...
May 17, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28512498/treatment-outcomes-of-full-pulpotomy-as-an-alternative-to-tooth-extraction-in-molars-with-hyperplastic-irreversible-pulpitis-a-case-report
#5
Saeed Asgary, Prashant Verma, Ali Nosrat
Root canal therapy (RCT) is a common and successful treatment for irreversible pulpitis due to carious pulp exposure in mature permanent teeth. However, it is often an expensive procedure, may require multiple appointments, and requires a high level of training and clinical skill, specifically in molars. Uninsured patients, low-income patients, and patients with limited access to specialist care often elect for extraction of restorable teeth with irreversible pulpitis. There is a need for an alternative affordable treatment option to preserve their teeth and maintain chewing function...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28512495/endodontic-management-of-open-apex-teeth-using-lyophilized-collagen-sponge-and-mta-cement-report-of-two-cases
#6
Miriam Graziele Magro, Milton Carlos Kuga, Weber Adad Ricci, Kátia Cristina Keine, Mateus Rodrigues Tonetto, Suellen Linares Lima, Alvaro Henrique Borges, Lauriê Garcia Belizário, Matheus Coêlho Bandeca
Teeth with open apices, such as in immature teeth or those with apical root resorption are clinical cases with difficult immediate resolution. With the use of mineral trioxide aggregate (MTA) in dentistry, it was possible to optimize the treatment time of these cases by immediate placement of apical plug and the root canal filling. However, some negative effects can occur if MTA is extruded beyond the apex. To avoid this accident, it has been recommended to use of an apical matrix prior to placement of MTA...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28509506/anti-inflammatory-and-regenerative-effects-of-albanian-propolis-in-experimental-vital-amputations
#7
Aida Meto, Agron Meto, Bora Bimbari, Kastriot Shytaj, Mutlu Özcan
This study evaluated the effects of Albanian propolis on the inflamed pulpal tissue after pulpotomy in piglets. In five piglets, two teeth each were infected using special pathogenic microbial flora that was prepared in advance in order to cause inflammation of the pulp. Pulpotomy was performed in the maxillary and mandibular central and lateral incisors. Microbial flora pathogenesis prepared from the section of infected teeth, containing Staphylococcus aureus, Streptococcus viridans, Enterococcus faecalis, Staphylococcus albus and mixed flora were used to cause artificial pulpitis...
September 2016: European Journal of Prosthodontics and Restorative Dentistry
https://www.readbyqxmd.com/read/28503478/the-effects-of-non-thermal-plasma-and-conventional-treatments-on-the-bond-strength-of-fiber-posts-to-resin-cement
#8
Maíra do Prado, Eduardo Moreira da Silva, Juliana das Neves Marques, Caroline Brum Gonzalez, Renata Antoun Simão
OBJECTIVES: This study compared the effect of hexamethyldisiloxane (HMDSO) and ammonia (NH3) plasmas on the bond strength of resin cement to fiber posts with conventional treatments. MATERIALS AND METHODS: Sixty-five fiber posts were divided into 5 groups: Control (no surface treatment); H2O2 (24% hydrogen peroxide for 1 min); Blasting (blasting with aluminum oxide for 30 sec); NH3 (NH3 plasma treatment for 3 min); HMDSO (HMDSO plasma treatment for 15 min). After the treatments, the Ambar adhesive (FGM Dental Products) was applied to the post surface (n = 10)...
May 2017: Restorative Dentistry & Endodontics
https://www.readbyqxmd.com/read/28502026/dentin-remineralizing-ability-and-enhanced-antibacterial-activity-of-strontium-and-hydroxyl-ion-co-releasing-radiopaque-hydroxyapatite-cement
#9
R Jayasree, T S Sampath Kumar, S Mahalaxmi, Sireesha Abburi, Y Rubaiya, Mukesh Doble
Dental caries is an infection of the mineralized tooth structures that advances when acid secreted by bacterial action on dietary carbohydrates diffuses and dissolves the tooth mineral leading to demineralization. During treatment, clinicians often remove only the superficial infected tooth structures and retain a part of affected carious dentin to prevent excessive dentin loss and pulp exposure. Calcium hydroxide is used to treat the affected dentin because it is alkaline, induces pulp-dentin remineralization and decreases bacterial infection...
June 2017: Journal of Materials Science. Materials in Medicine
https://www.readbyqxmd.com/read/28497132/three-generations-of-zirconia-%C3%A2-from-veneered-to-monolithic-part-ii
#10
Bogna Stawarczyk, Christin Keul, Marlis Eichberger, David Figge, Daniel Edelhoff, Nina Lümkemann
This article presents the historical development of the different generations of zirconia and their range of indications, from veneered to monolithic zirconia restorations. While Part I concentrated on detailed information about the development of zirconia for dental use and the mechanical and optical properties, Part II deals with the resulting guidelines for working with the relevant generations by summarizing the correct cementation procedure. Furthermore, this part also focuses on translucency measurements for better characterization and understanding of the different materials...
2017: Quintessence International
https://www.readbyqxmd.com/read/28494273/fatigue-failure-load-of-monolithic-y-tzp-three-unit-fixed-dental-prostheses-effect-of-grinding-at-the-gingival-zone-of-the-connector
#11
Marina Amaral, Regina F Villefort, Renata Marques Melo, Gabriel K R Pereira, Yu Zhang, Luiz Felipe Valandro, Marco Antonio Bottino
OBJECTIVES: To determine the fatigue failure loads of three-unit monolithic zirconia fixed dental prosthesis (FDPs) before and after grinding of the gingival areas of connectors with diamond burs. MATERIAL AND METHODS: FDPs were milled from pre-sintered blocks of zirconia simulating the absence of the first mandibular molar. Half of the specimens were subjected to grinding, simulating clinical adjustment, and all of them were subjected to glazing procedure. Additional specimens were manufactured for roughness analysis...
March 7, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28492748/influence-of-resin-cements-on-color-stability-of-different-ceramic-systems
#12
Renata Borges Rodrigues, Erick de Lima, Marina Guimarães Roscoe, Carlos José Soares, Paulo Francisco Cesar, Veridiana Resende Novais
The purpose of this study was to evaluate color stability of two dental ceramics cemented with two resin cements, assessing the color difference (ΔE00) by the measurement of L*, a*, b*, c* and h* of transmittance. The combination of two ceramic system (feldspathic and lithium disilicate) and two resin cements - color A3 (RelyX ARC and Variolink II) resulted in 4 groups (n=5). Ten disks-shaped specimens were fabricated for each ceramic system (10x1.5 mm), etched with hydrofluoric acid (10%) and silanized prior to cementation...
March 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28492746/biocompatibility-of-a-new-dental-glass-ionomer-cement-with-cellulose-microfibers-and-cellulose-nanocrystals
#13
Rafael Menezes-Silva, Fabiano Vargas Pereira, Maria Helena Santos, Janir Alves Soares, Suelleng Maria Cunha Santos Soares, João Luiz de Miranda
Developing new restorative materials should avoid damage to tissue structures. This study evaluated the biocompatibility of a commercial dental glass ionomer cement (GIC) mechanically reinforced with cellulose microfibers (GIC+CM) or cellulose nanocrystals (GIC+CN) by implantation of three test specimens in subcutaneous tissue in the dorsal region of 15 Rattus norvegicus albinus rats. Each rat received one specimen of each cement, resulting in the following groups (n=15): Group GIC (Control), Group GIC+CM and Group GIC+NC...
March 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/28492197/the-effect-of-atraumatic-restorative-treatment-on-adhesive-restorations-for-dental-caries-in-deciduous-molars
#14
Eliane Batista de Medeiros Serpa, Marayza Alves Clementino, Ana Flávia Granville-Garcia, Aronita Rosenblatt
BACKGROUND: Minimal invasive approaches to managing caries, such as partial caries removal techniques and atraumatic restorative treatment (ART), are showing increasing evidence of improved outcomes over the conventional complete caries removal. OBJECTIVE: To evaluate clinically and radiographically the effect of ART on restorations using restorative cement and glass ionomer cement (GIC) for dental caries in the deciduous molars of children aged between 4 and 8 years...
April 2017: Journal of the Indian Society of Pedodontics and Preventive Dentistry
https://www.readbyqxmd.com/read/28490845/a-survey-of-pediatric-dentists-caries-related-treatment-decisions-and-restorative-modalities-a-web-based-survey
#15
Hassan S Halawany, Fouad Salama, Vimal Jacob, Nimmi Biju Abraham, Tarfa Nasser Bin Moharib, Abdulfatah Samih Alazmah, Jawaher Abdulaziz Al Harbi
OBJECTIVE: To identify current practices and the preferred caries-related treatment decisions and restorative modalities of primary teeth among pediatric dental practitioners in Saudi Arabia. MATERIALS AND METHODS: This was a web-based cross-sectional survey conducted among licensed pediatric dental practitioners in Saudi Arabia. Following the retrieval of the email addresses from the Saudi Dental Council, an email explaining the purpose of the study and a link to SurveyMonkey electronic survey consisting of 23 questions was sent to all the members registered under the pediatric dentistry practitioners, starting in September till December 2013...
April 2017: Saudi Dental Journal
https://www.readbyqxmd.com/read/28478986/retrospective-cross-sectional-study-on-immediately-loaded-implant-supported-mandibular-fixed-complete-arch-prostheses-fabricated-with-the-passive-fit-cementation-technique
#16
Francine Baldin Able, Ivete Aparecida de Mattias Sartori, Geninho Thomé, Ana Cláudia Moreira Melo
STATEMENT OF PROBLEM: Mandibular fixed complete-arch dental prostheses on dental implants have been benefiting patients for a long time, but problems with passive fitting between the metallic framework of the prostheses and the implants might influence its long-term success. PURPOSE: The purpose of this cross-sectional study of immediately loaded mandibular fixed complete-arch dental prostheses was to evaluate the survival and success rates of prostheses, the survival rates of dental implants, the occurrence of complications in the prostheses and implants, participant satisfaction, and the association between cantilever length and prosthesis complications...
May 5, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28470622/green-synthesis-and-characterization-of-ag-nanoparticles-from-mangifera-indica-leaves-for-dental-restoration-and-antibacterial-applications
#17
Dola Sundeep, T Vijaya Kumar, P S Subba Rao, R V S S N Ravikumar, A Gopala Krishna
Green synthesis has gained a wide recognition as clean synthesis technique in the recent years. In the present investigation, silver nanoparticles were prepared by a novel green synthesis technique using Mangifera indica (Mango leaves) and found to be successfully used in dental applications. The prepared samples were spectroscopically characterized by XRD, PSA, SEM with EDS, and UV-Vis spectroscopy. The crystalline size and lattice strain were analyzed from the XRD data which were counter-verified by W-H plots and particle size analyzer...
May 3, 2017: Progress in biomaterials
https://www.readbyqxmd.com/read/28469824/traction-test-of-temporary-dental-cements
#18
Juan-Luis Román-Rodríguez, Diego Millan-Martínez, Antonio Fons-Font, Rubén Agustín-Panadero, Lucía Fernández-Estevan
BACKGROUND: Classic self-curing temporary cements obstruct the translucence of provisional restorations. New dual-cure esthetic temporary cements need investigation and comparison with classic cements to ensure that they are equally retentive and provide adequate translucence. The objective is to analyze by means of traction testing in a in vitro study the retention of five temporary cements. MATERIAL AND METHODS: Ten molars were prepared and ten provisional resin restorations were fabricated using CAD-CAM technology (n=10)...
April 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28466248/comparative-evaluation-of-the-stability-of-two-different-dental-implant-designs-and-surgical-protocols-a-pilot-study
#19
David E Simmons, Pooja Maney, Austin G Teitelbaum, Susan Billiot, Lomesh J Popat, A Archontia Palaiologou
BACKGROUND: The purpose of this study was to compare a parallel wall design implant to a tapered apex design implant when placed in the posterior maxilla using two different surgical protocols. METHODS: Twenty-seven patients (30 implants) were divided into three groups. All implants were 4 mm wide in diameter and 8 mm long. Group A received 10 tapered implants (OSPTX) (Astra Tech OsseoSpeed TX™) using the soft bone surgical protocol (TXSoft). Group B received 10 tapered implants (OSPTX) (AstraTech OsseoSpeedTX™) using the standard surgical protocol (TXStd)...
December 2017: International Journal of Implant Dentistry
https://www.readbyqxmd.com/read/28460835/a-chronic-in-situ-coil-system-adapted-for-intracerebral-stimulation-during-mri-in-rats
#20
Dan Madularu, Chathura Kumaragamage, Axel P Mathieu, Praveen Kulkarni, M Natasha Rajah, Alain P Gratton, Jamie Near
BACKGROUND: We describe the fabrication and performance of a chronic in situ coil system designed to allow focal brain stimulation in rats while acquiring functional MRI data. NEW METHOD: An implantable receive-only surface radiofrequency coil (iCoil) was designed to be fitted subcutaneously, directly onto to the rat skull surface during the intracerebral cannulation procedure. The coil is fixed in place using acrylic dental cement anchored to four screws threaded into the skull...
April 29, 2017: Journal of Neuroscience Methods
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