keyword
MENU ▼
Read by QxMD icon Read
search

Dental composite

keyword
https://www.readbyqxmd.com/read/28642930/a-novel-etching-technique-for-surface-treatment-of-zirconia-ceramics-to-improve-adhesion-of-resin-based-luting-cements
#1
Eystein Ivar Ruyter, Nalini Vajeeston, Torbjørn Knarvang, Ketil Kvam
Objectives: Bonding of zirconia crowns and bridges to abutments is important, not only bonding of the thin resin layer to the abutment, but also bonding to the zirconia ceramic is crucial. Both mechanical and chemical adhesion are desired. Mechanical retention of dental porcelain achieved by etching with moderately concentrated hydrofluoric acid is not possible with zirconia ceramics. The purpose of this study was to show that etching is possible with relative low melting fluoride compounds such as ammonium hydrogen difluoride and potassium hydrogen difluoride...
January 2017: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642921/fracture-behavior-of-single-structure-fiber-reinforced-composite-restorations
#2
Kohji Nagata, Sufyan K Garoushi, Pekka K Vallittu, Noriyuki Wakabayashi, Hidekazu Takahashi, Lippo V J Lassila
Objective: The applications of single-structure fiber-reinforced composite (FRC) in restorative dentistry have not been well reported. This study aimed to clarify the static mechanical properties of anterior crown restorations prepared using two types of single-structure FRC. Materials and methods: An experimental crown restoration was designed for an upper anterior incisor. The restorations were made from IPS Empress CAD for CEREC (Emp), IPS e.max(®) CAD (eMx), experimental single-structure all-FRC (a-FRC), Filtek™ Supreme XTE (XTE), and commercially available single-structure short-FRC (everX Posterior™) (n = 8 for each material) (s-FRC)...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28642911/a-retrospective-multicenter-study-comparing-metal-ceramic-and-composite-single-crowns-performed-in-public-general-dentistry-5-year-results
#3
Jennie Overmeer, Birger Narby, Lars Hjalmarsson, Kristina Arnrup, Alf Eliasson
Objective The aim of this study was to evaluate and compare the 5-year survival and complication rate of metal-ceramic (MC) and composite single crowns performed within Public Dental Service, general dentistry, in three Swedish counties and with patients' gender, tooth position, root canal treatment and the presence of a post-and-core taken into account. Methods Data were collected from dental records of 600 patients who had received either an MC (n = 300) or a composite (n = 300) crown on a premolar or molar tooth in the year 2005 and where 5 years of follow-up data were available...
December 2016: Acta Biomaterialia Odontologica Scandinavica
https://www.readbyqxmd.com/read/28639686/tempor%C3%A3-re-anhebung-der-vertikaldimension-mit-komposit-in-einem-vereinfachten-direkten-spritzgussverfahren
#4
Jürgen Manhart
The comprehensive dental rehabilitation of complex prosthetic cases is often associated with increasing occlusal vertical dimension and transferring horizontal mandibular position in centric relation. The newly defined position of the mandibula should be functionally and esthetically evaluated for a longer time period before irreversible measures are performed. This case report discusses in detail a time-saving and economic direct method for increasing occlusal vertical dimension with long-term provisional composite restorations using a simplified injection molding technique and illustrates the complete intraoral and laboratory workflow...
2017: Swiss Dental Journal
https://www.readbyqxmd.com/read/28638554/effect-of-professional-dental-prophylaxis-on-the-surface-gloss-and-roughness-of-cad-cam-restorative-materials
#5
Toshiko Sugiyama, Atsushi Kameyama, Tomoka Enokuchi, Akiko Haruyama, Aoi Chiba, Setsuko Sugiyama, Makoto Hosaka, Toshiyuki Takahashi
BACKGROUND: This study aimed to evaluate the effect of dental prophylaxis on the surface gloss and roughness of different indirect restorative materials for computer-aided design/computer-aided manufacturing (CAD/CAM): two types of CAD/CAM composite resin blocks (Shofu Block HC and Estelite Block) and two types of CAD/CAM ceramic blocks (IPS Empress CAD and Celtra DUO). MATERIAL AND METHODS: After polishing the CAD/CAM blocks and applying prophylaxis pastes, professional dental prophylaxis was performed using four different experimental protocols (n = 5 each): mechanical cleaning with Merssage Regular for 10 s four times (Group 1); four cycles of mechanical cleaning with Merssage Regular for 10 s and Merssage Fine for 10 s (Group 2); four cycles of mechanical cleaning with Merssage Regular for 10 s and Merssage Fine for 30 s (Group 3); and mechanical cleaning with Merssage Fine for 10 s four times (Group 4)...
June 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28635867/-the-investigations-into-the-amino-acid-composition-of-the-tooth-for-the-purpose-of-forensic-medical-personality-identification
#6
Yu I Pigolkin, G V Zolotenkova, P S Velenko, B N Izotov
The increasingly greater requirements for the new approaches to the forensic medical personality identification necessitate the extensive search for and the development of the precise methods enabling the experts to determine the general personality signs in the cases of mass mortality and the large number of victims with the conspicuous post-mortem changes in their appearance including those associated with putrefaction and strong fragmentation of the bodies. This article presents the analytical review demonstrating that determination of the victims' age in the combination with the analysis of the amino acid composition of dental tissues provides a promising tool for the investigations not only in the fields of archeology and anthropology but also for the purpose of personality identification in forensic medicine...
2017: Sudebno-meditsinskaia Ekspertiza
https://www.readbyqxmd.com/read/28632254/osteogenic-potential-of-gingival-mesenchymal-stem-cells-over-titanium-machined-surfaces
#7
Julio A Carrion, Junaid Rajani, Mohamed Al Bahrawy, Xiaojun Chan, Tae Jin Kim, Srinivas Myneni, Vincent J Iacono
PURPOSE: To evaluate the biochemical composition of bone nodules deposited by gingival mesenchymal stem cells (GMSCs) over titanium machined surfaces in vitro. MATERIALS AND METHODS: GMSCs were isolated from healthy gingival tissues of patients undergoing crown-lengthening surgical procedures. GMSCs were characterized following the International Society for Cellular Therapy guidelines. After incubation of the GMSCs with titanium discs, osteogenic differentiation was induced for 28 days...
June 20, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28631418/the-effects-of-biodentine-polycaprolactone-3d-scaffold-with-odontogenesis-properties-on-human-dental-pulp-cells
#8
C-C Ho, H-Y Fang, B Wang, T-H Huang, M-Y Shie
AIM: To determine the feasibility of using three-dimensional printed Biodentine/polycaprolactone composite scaffolds for orthopaedic and dental applications. The physicochemical properties and the odontogenic differentiation of human dental pulp cells (hDPCs) were investigated. METHODOLOGY: Biodentine was well-suspended in ethanol and dropped slowly into molten polycaprolactone with vigorous stirring. The Biodentine/polycaprolactone composite scaffolds were then fabricated into controlled macropore sizes and structures using an extrusion-based three-dimensional (3D) printer...
June 20, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28629062/construction-of-poly-lactic-co-glycolic-acid-zno-nanorods-ag-nanoparticles-hybrid-coating-on-ti-implants-for-enhanced-antibacterial-activity-and-biocompatibility
#9
Yiming Xiang, Jun Li, Xiangmei Liu, Zhenduo Cui, Xianjin Yang, K W K Yeung, Haobo Pan, Shuilin Wu
Poly(lactic-co-glycolic acid)/Ag/ZnO nanorods coating were successfully prepared on the surface of Ti metallic implants using a hydrothermal method and subsequent spin-coating of mixtures of poly(lactic-co-glycolic acid) and silver nanoparticles. The poly(lactic-co-glycolic acid)/Ag/ZnO nanorods coating exhibited excellent antibacterial efficacy of over 96% against both Staphylococcus aureus and Escherichia coli when the initial content of Ag nanoparticles was over 3wt%. In addition, the release of both silver and zinc could last for over a hundred days due to the enwrapping of poly(lactic-co-glycolic acid)...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28629032/effects-of-silane-modified-fillers-on-properties-of-dental-composite-resin
#10
Aysu Aydınoğlu, Afife Binnaz Hazar Yoruç
The effect of silanization on the mechanical, chemical, and physical properties of dental composites was investigated. Silica fillers were obtained from colloidal silica solution, Ludox® HS-40 and they were silanized by using 3-methacryloxypropyl trimethoxysilane (MPTMS) in an acidic media. Mineralogical and chemical structures of unsilanized and silanized fillers were determined by using XRD and FT-IR analyses. The modification of unsilanized/silanized fillers were investigated by performing XPS and TGA analyses...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28628735/effect-of-shade-opacity-and-layer-thickness-on-light-transmission-through-a-nano-hybrid-dental-composite-during-curing
#11
Hong-Keun Hyun, Carly K Christoferson, Carmem S Pfeifer, Chris Felix, Jack L Ferracane
OBJECTIVE: The aim of this study was to investigate the effect of shade and opacity on the change in light transmission through different thicknesses of a nano-hybrid composite during curing. MATERIALS AND METHODS: Twelve different shades of Venus Diamond (Heraeus Kulzer) were placed in disk shaped molds with thickness of 1, 2, and 3 mm (n = 3 per group) and cured with an LED light-curing unit. Initial, final and average irradiance, and the total amount of energy passing through the specimen were measured using the MARC Resin Calibrator at every 10s for a total of 40s...
June 19, 2017: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/28626287/high-contrast-reflectance-imaging-of-composite-restorations-color-matched-to-tooth-structure-at-1000-2300-nm
#12
William A Fried, Jacob C Simon, Cynthia L Darling, Oanh Le, Daniel Fried
A major advantage of composite restoration materials is that they can be color matched to the tooth. However, this presents a challenge when composites fail and they need to be replaced. Dentists typically spend more time repairing and replacing composites than placing new restorations. We have shown in previous studies that high-contrast images of composite can be acquired in occlusal transmission mode at near-IR wavelengths coincident with higher water absorption. The purpose of this study was to determine if similar high-contrast images can be acquired in reflectance mode at longer wavelengths where water absorption is even higher...
January 28, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28623801/dna-analysis-of-root-canal-filled-teeth
#13
Hikaru Izawa, Hirofumi Tsutsumi, Sayaka Maruyama, Toshinobu Komuro
Teeth are markedly useful as samples for DNA analysis; however, intact teeth are not always available. This study examined the possibility of identifying autosomal and Y-chromosome short tandem repeat (STR) types in samples from 34 teeth (15 intact and 19 root canal filled) that had been preserved for 10-33years after dental extraction. The aim was to explore the feasibility of individual identification by DNA analysis of samples obtained from highly decomposed and skeletonized corpses. Only one out of 24 autosomal STR loci was not identified in two of the 15 intact teeth, whereas all 23 loci of the Y chromosome STR were detected...
May 10, 2017: Legal Medicine
https://www.readbyqxmd.com/read/28621324/marginal-bone-loss-around-non-submerged-implants-is-associated-with-salivary-microbiome-during-bone-healing
#14
Xiao-Bo Duan, Ting-Xi Wu, Yu-Chen Guo, Xue-Dong Zhou, Yi-Ling Lei, Xin Xu, An-Chun Mo, Yong-Yue Wang, Quan Yuan
Marginal bone loss during bone healing exists around non-submerged dental implants. The aim of this study was to identify the relationship between different degrees of marginal bone loss during bone healing and the salivary microbiome. One hundred patients were recruited, and marginal bone loss around their implants was measured using cone beam computed tomography during a 3-month healing period. The patients were divided into three groups according to the severity of marginal bone loss. Saliva samples were collected from all subjected and were analysed using 16S MiSeq sequencing...
June 16, 2017: International Journal of Oral Science
https://www.readbyqxmd.com/read/28621272/radiopacity-of-mineral-trioxide-aggregate-with-and-without-inclusion-of-silver-nanoparticles
#15
Mariana Ss Mendes, Leonardo D Resende, Cláudia A Pinto, Denise P Raldi, Flavia Gr Cardoso, Sandra M Habitante
AIM: The aim of this study was to investigate the inclusion of silver nanoparticles (Ag NPs) in the mineral trioxide aggregate (MTA) composition to know which changes will result in the radiopacity of the material. MATERIALS AND METHODS: The experiment was performed according to the American National Standard Institute/American Dental Association specification no. 57/2000 and ISO 6876/2001. Five plates with five holes measuring 1 mm in depth and 5 mm in internal diameter were filled according to the different experimental groups as follows: white mineral trioxide aggregate (WMTA) + NP50 - W MTA with liquid Ag NP 50 ppm, WMTA + NP30 - W MTA with liquid Ag NP 30 ppm, WMTA + NP22 - W MTA with liquid Ag NP 22 ppm, WMTA + NPP - white MTA with liquid Ag NP and powder 1%, WMTA (control)...
June 1, 2017: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/28614533/effect-of-fluoride-on-salivary-immunoglobulins-and-sialic-acid
#16
Kadriye Görkem Ulu Güzel, Zuhal Kirzioğlu, Ali Kudret Adiloğlu, Münciye Semra Özay Ertürk
Objective: The aim of our study was to evaluate the effect of fluoride on salivary immunoglobulin and sialic acid levels in children with dental fluorosis and healthy teeth who live in places with high fluoride concentration in drinking water. Method: Fifty-one (51) healthy children between 6 and 12 years old with no caries were randomly selected from primary schools enrolled in the dental-care program operated by the Department of Pediatric Dentistry. The children were divided into two groups: group I comprised 26 children with dental fluorosis [Thylstrup-Fejerskov Dental Fluorosis Index (TFI) = 4] who lived in Isparta (2...
April 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28614532/patient-concerns-inventory-for-head-and-neck-cancer-brazilian-cultural-adaptation
#17
Ivy Jungerman, Julia Toyota, Neyller Patriota Montoni, Elma Heitmann Mares Azevedo, Renata Ligia Vieira Guedes, Aline Damascena, Derek Lowe, José Guilherme Vartanian, Simon N Rogers, Luiz Paulo Kowalski
Objective: The purpose of this study was to translate, culturally validate and evaluate the Patients Concerns Inventory - Head and Neck (PCI-H&N) in a consecutive series of Brazilian patients. Method: This study included adult patients treated for upper aerodigestive tract (UADT) cancer. The translation and cultural adaptation of the PCI-H&N followed internationally accepted guidelines and included a pretest sample of patients that completed the first Brazilian Portuguese version of the PCI...
April 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/28613022/parental-attitudes-towards-oral-health-and-caries-risk-in-their-children
#18
J H Vermaire, Nja van Exel
OBJECTIVES: The aim of this study was to investigate whether parents can be matched with attitudes towards oral health by means of a short vignette sheet, developed based on the results of an earlier Q-methodological study. Furthermore, this study aims to explore how the attitudes associate with diet and oral hygiene habits and with clinical outcomes in children. METHODS: A total of 170 parents of 6- to 9-year-old children completed a questionnaire including the vignette sheet and clinical scores (oral hygiene, caries) were retrieved from the follow-up measurement of a RCT on caries-preventive measures...
June 14, 2017: International Journal of Dental Hygiene
https://www.readbyqxmd.com/read/28602850/repair-may-increase-survival-of-direct-posterior-restorations-a-practice-based-study
#19
Luciano Casagrande, Mark Laske, Ewald M Bronkhorst, Marie Charlotte D N J M Huysmans, Niek J M Opdam
OBJECTIVES: To investigate repairs of direct restorations by a group of Dutch general dental practitioners (GDPs) and its consequences on longevity of restorations. METHODS: Data set was based on dental records of patients attending 11 general dental practices (24 Dentists) in the Netherlands. Patients that received Class II Amalgam or Composite restorations were included in the study. The outcomes were considered in two levels: "Success" - When no intervention was necessary on the original restoration, it was considered clinically acceptable...
June 8, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28600842/a-scoping-review-of-epidemiologic-risk-factors-for-pediatric-obesity-implications-for-future-childhood-obesity-and-dental-caries-prevention-research
#20
Donald L Chi, Monique Luu, Frances Chu
RESEARCH QUESTIONS: What are the non-modifiable (socioeconomic, genetic) and modifiable factors (physical activity, dietary behaviors) related to childhood (under age 12) obesity? How can this knowledge be applied to oral health professionals' efforts to prevent or manage dental caries in children? OBJECTIVES: Studies have identified risk factors for childhood obesity. The purpose of this scoping review was to develop a conceptual model to identify non-modifiable and modifiable risk factors for childhood obesity and to illustrate how these findings are relevant in developing interventions aimed at preventing obesity and dental caries in children...
June 10, 2017: Journal of Public Health Dentistry
keyword
keyword
100977
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"