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https://www.readbyqxmd.com/read/28633093/fracture-resistance-of-ceramic-and-polymer-based-occlusal-veneer-restorations
#1
Majed Al-Akhali, Mohamed Sad Chaar, Adham Elsayed, Abdulaziz Samran, Matthias Kern
OBJECTIVES: The purpose of this in vitro study was to evaluate the influence of thermodynamic loading on the durability and fracture resistance behavior of occlusal veneers fabricated from different biomedical dental CAD/CAM materials. METHODS: The occlusal surfaces of 64 extracted premolars were prepared in the enamel layer and restored with occlusal veneers with a fissure/cusp thickness of 0.5/0.8mm made from four different dental CAD/CAM materials: group LD lithium disilicate (e...
June 13, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28632910/withdrawn-hypnosis-for-children-undergoing-dental-treatment
#2
REVIEW
Sharifa Al-Harasi, Paul F Ashley, David R Moles, Susan Parekh, Val Walters
BACKGROUND: Managing children is a challenge that many dentists face. Many non-pharmacological techniques have been developed to manage anxiety and behavioural problems in children, such us: 'tell, show & do', positive reinforcement, modelling and hypnosis. The use of hypnosis is generally an overlooked area, hence the need for this review. OBJECTIVES: This systematic review attempted to answer the question: What is the effectiveness of hypnosis (with or without sedation) for behaviour management of children who are receiving dental care in order to allow successful completion of treatment?Null hypothesis: Hypnosis has no effect on the outcome of dental treatment of children...
June 20, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28632257/modeling-of-crestal-bone-after-submerged-vs-transmucosal-implant-placement-a-systematic-review-with-meta-analysis
#3
Stefan Paul, Matthias Petsch, Ulrike Held
PURPOSE: To determine differences in marginal bone changes when using submerged or transmucosal dental implants through a systematic review of the literature. MATERIALS AND METHODS: PubMed, Embase, and the Cochrane Library were electronically searched for trials comparing marginal bone loss between submerged and transmucosal dental implants with a minimum follow-up of 12 months published between January 1980 and January 2016. Manual searches of the bibliographies of the included studies were also carried out...
June 20, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28626287/high-contrast-reflectance-imaging-of-composite-restorations-color-matched-to-tooth-structure-at-1000-2300-nm
#4
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/28626283/assessment-of-cavitation-in-artificial-approximal-dental-lesions-with-near-ir-imaging
#5
Jacob C Simon, Cynthia L Darling, Daniel Fried
Bitewing radiography is still considered state-of-the-art diagnostic technology for assessing cavitation within approximal carious dental lesions, even though radiographs cannot resolve cavitated surfaces but instead are used to measure lesion depth in order to predict cavitation. Clinicians need new technologies capable of determining whether approximal carious lesions have become cavitated because not all lesions progress to cavitation. Assessing lesion cavitation from near-infrared (NIR) imaging methods holds great potential due to the high transparency of enamel in the NIR region from λ=1300-1700-nm, which allows direct visualization and quantified measurements of enamel demineralization...
January 28, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28624838/dental-management-of-pediatric-patients-affected-by-pulmonary-atresia-with-ventricular-septal-defect-a-scoping-review
#6
A Garrocho-Rangel, A-C Echavarría-García, M-A Rosales-Bérber, J Flores-Velázquez, A Pozos-Guillén
BACKGROUND: Congenital Heart Diseases (CHD) involves a wide range of pathological conditions, such as Pulmonary Atresia with Ventricle Septal Defect (PA/VSD). This disorder leads to the systemic circulation of oxygen-poor blood (cyanosis), with associated features and consequences in the oral cavity. MATERIAL AND METHODS: Using scoping review methodology for screening and article selection, the primary objectives of this paper were as follows: first, to pose a research question; second, to identify relevant studies in order to answer the research question; third, to select and retrieve the studies; fourth, to chart the critical data, and finally, to collate, summarize, and report the results from the most important articles on the dental management of children affected with PA/VSD...
June 18, 2017: Medicina Oral, Patología Oral y Cirugía Bucal
https://www.readbyqxmd.com/read/28623801/dna-analysis-of-root-canal-filled-teeth
#7
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/28622548/early-bony-changes-associated-with-bisphosphonate-related-osteonecrosis-of-the-jaws-in-rats-a-longitudinal-in-vivo-study
#8
Josy Lorena Peres Vilarinho, Nathália Ferrare, Andreia Maria Rocha Moreira, Helora Freitas Moura, Ana Carolina Acevedo, Sacha Braun Chaves, Nilce Santos Melo, André Ferreira Leite, Sérgio Bruzadelli Macedo, Melissa Paoletti de Souza, Ana Tereza Bittencourt Guimarães, Paulo Tadeu Figueiredo
OBJECTIVE: To evaluate early bony changes in an animal model of Medication-Related Osteonecrosis of the Jaw (MRONJ) at the side of the local trauma and at the contralateral side, comparing with a control group. Bony changes were evaluated by Microcomputed Tomography (MicroCT) at three times points: at baseline (T0), after drug administration (T1) and after dental extraction (T2). DESIGN: Two groups were compared: the experimental group in which zoledronic acid (ZA) was administered (17 rats) and the control group (13 rats)...
June 6, 2017: Archives of Oral Biology
https://www.readbyqxmd.com/read/28621821/an-unusual-case-of-dental-infection-by-pseudomonas-aeruginosa-causing-a-brain-abscess-case-report
#9
Rodrigo Dos Santos Pereira, João Paulo Bonardi, Arthur da Conceição Dias Ferreira, Gustavo Lima Latini
A brain abscess may result when dental infection reaches the brain through contiguous anatomic cavities such as the maxillary sinus, the ethmoid sinus and the orbital cavity. It is an important complication and should be treated aggressively. Such treatment would include the excision of the etiological factor, drainage and adjuvant antibiotic therapy. The present case concerns a 23-year-old woman who presented at the General Hospital of Nova Iguaçu with complaints of pain in the right side of the face and was diagnosed with acute sinusitis...
June 16, 2017: Australian Dental Journal
https://www.readbyqxmd.com/read/28619442/quantification-of-bleeding-during-dental-extraction-in-patients-on-dual-antiplatelet-therapy
#10
F Buhatem Medeiros, N Pepe Medeiros de Rezende, J Bertoldi Franco, A C Porrio de Andrade, L Timerman, M Gallottini, I L Itagiba Neves, K L Ortega
In spite of the possibility of triggering thromboembolic events, many professionals indicate the suspension of antiplatelet agents before dental surgical procedures. The aim of this study was to perform a quantitative assessment of intraoperative bleeding in patients on dual antiplatelet therapy. A case-control study was conducted in patients on dual antiplatelet therapy (APT group) and in patients who did not use these medications (control group). The following examinations were requested: complete blood cell count, blood coagulation tests, and platelet aggregation...
June 12, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28618434/alveolar-ridge-augmentation-using-dystopic-autogenous-tooth-2-year-results-of-an-open-prospective-study
#11
Veronika Pohl, Sebastian Pohl, Irene Sulzbacher, Rudolf Fuerhauser, Georg Mailath-Pokorny, Robert Haas
PURPOSE: To evaluate the use of chemically unchanged tooth material in lateral alveolar ridge augmentation or for the filling of jaw defects. MATERIALS AND METHODS: A total of 20 patients underwent either lateral augmentation of the alveolar process (11 patients) or filling of jaw defects (6 patients) with autogenous unaltered tooth material in a longitudinal 2-year study. In three patients, the jaw defect was so marked that a bone block graft had to be used for augmentation in addition to particulate dental material...
June 14, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28617407/-efficiency-of-cephalometry-in-orthodontic-treatment-planning-cephalometric-parameters-and-their-age-related-changes
#12
O I Arsenina, K M Shishkin, M K Shishkin, N V Popova
The aim of the study was to evaluate the efficiency of cephalometry in orthodontic treatment planning in patients with teeth crowding and Angle Class I molars relation. Cephalometric parameters were analyzed in 70 patients that completed orthodontic treatment in 'Orthodont' dental clinic (Samara). Cephalometric X-rays were taken at baseline examination and after treatment. In patients with crowding and Class I molars relationship treated with extraction of all four first premolars correlation between N-Se and mandibular and maxillary length was disturbed...
2017: Stomatologii︠a︡
https://www.readbyqxmd.com/read/28617398/-ultrastructural-changes-of-human-dental-hard-tissues-during-orthodontic-treatment-with-fixed-appliances
#13
I N Antonova, V D Goncharov, E A Bobrova
The aim of the study was to evaluate ultrastructural changes of dental enamel after fixation of orthodontic appliances, initial influence of orthodontic forces and removal of braces. Five intact permanent tooth extracted for orthodontic reasons were included in the experimental study. Scanning probe microscopy was conducted in 4 random enamel points in each tooth (20 points overall) in semi-contact mode with standard 10 nm probes. The study showed ultrastructural enamel changes such as nanofractures up to 1 mm along the braces locks...
2017: Stomatologii︠a︡
https://www.readbyqxmd.com/read/28613059/-experimental-study-of-transforming-growth-factor-%C3%AE-3-combined-with-dental-pulp-stem-cells-in-promoting-the-implant-s-osseointegration
#14
T Wang, Huojia Muhetaer, J Li
Objective: To investigate the effect of transforming growth factor-β3 (TGF-β3) and dental pulp stem cells (DPSC) in promoting the implant's osteointegration. Methods: Thirty-three New Zealand white rabbits were randomly divided into phosphate buffer saline (PBS) group, DPSC group and TGF-β3 + DPSC group (12 rabbits/group). Two teeth from the rabbits's mandibular incisors or molars were pulled out randomly, then implant were placed in the tooth extraction site immediately. In PBS group, the implant area was filled with Bio-Oss powder 0...
June 9, 2017: Zhonghua Kou Qiang Yi Xue za Zhi, Zhonghua Kouqiang Yixue Zazhi, Chinese Journal of Stomatology
https://www.readbyqxmd.com/read/28612428/outcomes-and-prognostic-factors-that-influence-the-success-of-tooth-autotransplantation-in-children-and-adolescents
#15
Vasiliki Kafourou, Huei Jinn Tong, Peter Day, Nadine Houghton, R James Spencer, Monty Duggal
BACKGROUND/AIM: Tooth autotransplantation has been advocated for replacement of missing teeth, or teeth that are unsuitable for restoration. The aim of this study was to investigate the outcomes and prognostic factors that influenced the success of tooth transplantation in a paediatric population. MATERIALS AND METHODS: Data was extracted from the records of 75 patients (89 teeth). Demographic and prognostic factors were recorded and analyzed for the clinical and radiographic outcomes for periodontal ligament (PDL) and pulp healing of transplanted teeth...
June 14, 2017: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/28608925/osteoradionecrosis-of-the-mandible-in-patients-with-oropharyngeal-carcinoma-treated-with-intensity-modulated-radiotherapy
#16
Francesca Caparrotti, Shao Hui Huang, Lin Lu, Scott V Bratman, Jolie Ringash, Andrew Bayley, John Cho, Meredith Giuliani, John Kim, John Waldron, Aaron Hansen, Li Tong, Wei Xu, Brian O'Sullivan, Robert Wood, David Goldstein, Andrew Hope
BACKGROUND: Osteoradionecrosis (ORN) of the mandible is a late toxicity affecting patients treated with radiotherapy for head and neck malignancies. To the authors' knowledge, ORN has no standardized grading system and its reporting is based on retrospective findings in heterogeneous patient populations. The rate of ORN in the era of intensity-modulated radiotherapy (IMRT) still is unknown. METHODS: The authors report the incidence of ORN from prospectively collected data regarding 1196 patients who were diagnosed with squamous cell carcinoma of the oropharynx and treated with curative-intent IMRT, with or without concomitant systemic treatment, from January 2005 to December 2014...
June 13, 2017: Cancer
https://www.readbyqxmd.com/read/28608478/dental-extraction-from-an-appendix-a-case-report-and-review-of-the-literature
#17
Aaron Smith, Omar Mouline, Tony Mallet, Gael Phillips, Merwe Hartslief
No abstract text is available yet for this article.
June 12, 2017: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/28607361/a-novel-strategy-to-engineer-pre-vascularized-full-length-dental-pulp-like-tissue-constructs
#18
Avathamsa Athirasala, Fernanda Lins, Anthony Tahayeri, Monica Hinds, Anthony J Smith, Christine Sedgley, Jack Ferracane, Luiz E Bertassoni
The requirement for immediate vascularization of engineered dental pulp poses a major hurdle towards successful implementation of pulp regeneration as an effective therapeutic strategy for root canal therapy, especially in adult teeth. Here, we demonstrate a novel strategy to engineer pre-vascularized, cell-laden hydrogel pulp-like tissue constructs in full-length root canals for dental pulp regeneration. We utilized gelatin methacryloyl (GelMA) hydrogels with tunable physical and mechanical properties to determine the microenvironmental conditions (microstructure, degradation, swelling and elastic modulus) that enhanced viability, spreading and proliferation of encapsulated odontoblast-like cells (OD21), and the formation of endothelial monolayers by endothelial colony forming cells (ECFCs)...
June 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28606831/relationship-between-dental-status-and-development-of-osteoradionecrosis-of-the-jaw-a-multicenter-retrospective-study
#19
Yuka Kojima, Souichi Yanamoto, Masahiro Umeda, Yumiko Kawashita, Izumi Saito, Takumi Hasegawa, Takahide Komori, Nobuhiro Ueda, Tadaaki Kirita, Shin-Ichi Yamada, Hiroshi Kurita, Yasuko Senga, Yasuyuki Shibuya, Hiroshi Iwai
OBJECTIVE: Osteoradionecrosis of the jaw is a serious late adverse event in patients with head and neck cancer undergoing radiotherapy. The aim of this study is to investigate the relationship between dental status and development of osteoradionecrosis. STUDY DESIGN: Multicenter, retrospective observational study. A total of 392 patients with head and neck cancer who underwent radiotherapy were investigated for correlations between the development of osteoradionecrosis and various factors...
May 4, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28603127/antibacterial-activities-of-diospyros-blancoi-phoenix-dactylifera-and-morus-nigra-against-dental-caries-causing-pathogens-an-in-vitro-study
#20
Lubna Tahir, Ayesha Aslam, Safia Ahmed
The study was undertaken to determine the in-vitro antibacterial potential of Diospyrosblancoi, Phoenix dactylifera and Morusnigra leaf extracts in hexane, chloroform, methanol, ethyl-acetate and aqueous extracts against dental caries causing bacteria. Disc diffusion assay was used to determine the antibacterial efficacy; the extracts were further separated using Thin Layer Chromatography and the anti-biofilm activity of the extracts was also determined. The preliminary phytochemical screening of the extracts revealed the presences of flavonoids, saponins, alkaloids and tannins because of which the extracts showed strong antibacterial activity against the selected pathogens...
January 2017: Pakistan Journal of Pharmaceutical Sciences
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