keyword
MENU ▼
Read by QxMD icon Read
search

Crowns

keyword
https://www.readbyqxmd.com/read/28634279/in-frame-seven-amino-acid-duplication-in-aip-arose-over-the-last-3000-years-disrupts-protein-interaction-stability-and-is-associated-with-gigantism
#1
Roberto Salvatori, Serban Radian, Yoan Diekmann, Donato Iacovazzo, Alessia David, Plamena Grabovska, Giorgia Grassi, Anna-Marie Bussell, Karen Stals, Astrid Weber, Richard Quinton, Elizabeth Crowne, Valentina Corazzini, Louise A Metherell, Tara Kearney, Daniel Du Plessis, Ajay Sinha, Atik Baborie, Anne-LIse Locoq, Philippe Chanson, Olaf Ansorge, Sian Ellard, Peter J Trainer, David Balding, Mark Thomas, Marta Korbonits
OBJECTIVE: Mutations in the aryl hydrocarbon receptor-interacting protein (AIP) gene are associated with pituitary adenoma, acromegaly and gigantism. Identical alleles in unrelated pedigrees could be inherited from a common ancestor or result from recurrent mutation events. DESIGN & METHODS: Observational, inferential and experimental study, including: AIP mutation testing; reconstruction of 14 AIP-region (8.3 Mbp) haplotypes; coalescent-based approximate Bayesian estimation of the time to most recent common ancestor (tMRCA) of the derived allele; forward population simulations to estimate current number of allele carriers; proposal of mutation mechanism; protein structure predictions; co-immunoprecipitation and cycloheximide chase experiments...
June 20, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28634254/widespread-paleopolyploidy-gene-tree-conflict-and-recalcitrant-relationships-among-the-carnivorous-caryophyllales
#2
Joseph F Walker, Ya Yang, Michael J Moore, Jessica Mikenas, Alfonso Timoneda, Samuel F Brockington, Stephen A Smith
PREMISE OF STUDY: The carnivorous members of the large, hyperdiverse Caryophyllales (e.g., Venus flytrap, sundews, and Nepenthes pitcher plants) represent perhaps the oldest and most diverse lineage of carnivorous plants. However, despite numerous studies seeking to elucidate their evolutionary relationships, the early-diverging relationships remain unresolved. METHODS: To explore the utility of phylogenomic data sets for resolving relationships among the carnivorous Caryophyllales, we sequenced 10 transcriptomes, including all the carnivorous genera except those in the rare West African liana family Dioncophyllaceae...
June 20, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28632256/scanning-electron-microscopy-analysis-of-the-adaptation-of-single-unit-screw-retained-computer-aided-design-computer-aided-manufacture-abutments-after-mechanical-cycling
#3
Roberto Adrian Markarian, Deborah Pedroso Galles, Fabiana Mantovani Gomes França
PURPOSE: To measure the microgap between dental implants and custom abutments fabricated using different computer-aided design/computer-aided manufacture (CAD/CAM) methods before and after mechanical cycling. MATERIALS AND METHODS: CAD software (Dental System, 3Shape) was used to design a custom abutment for a single-unit, screw-retained crown compatible with a 4.1-mm external hexagon dental implant. The resulting stereolithography file was sent for manufacturing using four CAD/CAM methods (n = 40): milling and sintering of zirconium dioxide (ZO group), cobalt-chromium (Co-Cr) sintered via selective laser melting (SLM group), fully sintered machined Co-Cr alloy (MM group), and machined and sintered agglutinated Co-Cr alloy powder (AM group)...
June 20, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28632254/osteogenic-potential-of-gingival-mesenchymal-stem-cells-over-titanium-machined-surfaces
#4
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/28631922/dual-property-supramolecular-h-bonded-15-crown-5-ln-iii-chains-joint-magneto-luminescence-and-ab-initio-studies
#5
Majeda Al Hareri, Zineb Ras Ali, Jeffery Regier, Emma L Gavey, Luis D Carlos, Rute A S Ferreira, Melanie Pilkington
Two complexes comprising 9-coordinate capped square antiprismatic [Ln(NO3)3(OH2)2(MeOH)] units [Ln(III) = Dy 6; Tb 7] are reported in which the metal complexes are hydrogen-bonded to 15C5 (15-crown-5) macrocycles to form supramolecular chains, {[Ln(NO3)3(OH2)2(MeOH)]·(15C5)}n. Alternating current magnetic susceptibility measurements supported by ab initio studies show field-induced SMM (single-molecule magnet) behavior for 6, but rapid relaxation of the magnetization for 7 because of the presence of dominant quantum tunneling processes as evidenced by the presence of a significant calculated tunnel splitting within the ground-state multiplet...
June 20, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28630958/a-questionnaire-on-the-use-of-digital-denture-impressions-in-a-preclinical-setting
#6
Kerstin Wegner, Karin Michel, Paul Henryk Seelbach, Bernd Wöstmann
Since February 2010, intraoral scanning (Lava COS system, 3M ESPE, Seefeld, Germany) has been integrated into the preclinical curriculum at the Department of Prosthodontics of the Justus Liebig University. All students were given a lecture and were trained using a guided scan exercise. After preparing three teeth (mandibular first premolars and mandibular first molar in the 4th quadrant) for cast crowns, the students were asked to scan the maxillary and mandibular teeth. Their acceptance of the new module, "Scanning," was analyzed with the use of a questionnaire (n = 108)...
2017: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28630337/stem-caecilian-from-the-triassic-of-colorado-sheds-light-on-the-origins-of-lissamphibia
#7
Jason D Pardo, Bryan J Small, Adam K Huttenlocker
The origin of the limbless caecilians remains a lasting question in vertebrate evolution. Molecular phylogenies and morphology support that caecilians are the sister taxon of batrachians (frogs and salamanders), from which they diverged no later than the early Permian. Although recent efforts have discovered new, early members of the batrachian lineage, the record of pre-Cretaceous caecilians is limited to a single species, Eocaecilia micropodia The position of Eocaecilia within tetrapod phylogeny is controversial, as it already acquired the specialized morphology that characterizes modern caecilians by the Jurassic...
June 19, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28628390/influence-of-screw-surface-treatment-on-retention-of-implant-supported-fixed-partial-dentures
#8
Marcos Boaventura de Moura, Renata Borges Rodrigues, Leandro Moreira Pinto, Cleudmar Amaral de Araújo, Veridiana Resende Novais, Paulo César Simamoto Júnior
The aim of this study was to assess the effect of DLC (Diamond-like carbon) coating on the removal torque of prefabricated implant screws after cyclic loading. Four groups with two crowns supported by two implants (n=5) were obtained according to splinted and non-splinted prosthesis, using titanium or DLC screw (STi, SC, NSTi and NSC). The prosthetic screws were tightened at 32Ncm, retightened, and the specimens were submitted to 106 mechanical cycles (4Hz/98N). After cyclic loading, loosening torque was evaluated and the final measurements were performed...
June 19, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28628355/adjacent-dental-implants-classification-based-on-restorative-design
#9
Periklis Proussaefs, Abdulaziz AlHelal, Abdulrahman Taleb, Mathew Kattadiyil
There is controversy in the literature regarding the indicated retentive mechanism for implant supported crowns. When adjacent implants are restored, the restoration can be either screw retained, cement retained, or a combination of cement and screw retained. Adjacent implant supported crowns can be restored as individual implant supported crowns or they can be splinted. A classification system is proposed when adjacent implants are restored. The classification system describes currently available options to restore adjacent implants...
June 19, 2017: Journal of Oral Implantology
https://www.readbyqxmd.com/read/28628137/-antagonistic-effect-of-quercetin-on-pm2-5-toxicity-in-the-rat-s-embryonic-development-in-vitro
#10
A Q Fan, J Q Feng, W Liu, M J Zhang, T Liu, Y L Zhou, Y J Xu
OBJECTIVE: To explore the antagonistic effect of quercetin on fine particulate matter (PM2.5)-induced embryonic developmental toxicity in vitro. METHODS: PM2.5 was collected on glass fiber filters by PM2.5 samplers during the heating period of Dec. 2015 to Mar. 2016 in an area of Haidian District, Beijing City. The sampled filters were cut into 1 cm×3 cm pieces followed by sonication. The PM2.5 suspension was filtered into a 10 cm glass dish through 8 layers of sterile carbasus and stored at -80 °C until freeze drying...
June 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28627887/controlling-the-catalytic-functions-of-dnazymes-within-constitutional-dynamic-networks-of-dna-nanostructures
#11
Shan Wang, Liang Yue, Zohar Shpilt, Alessandro Cecconello, Jason S Kahn, Jean-Marie Lehn, Itamar Willner
Mimicking complex cellular dynamic chemical networks being up-regulated or down-regulated by external triggers is one of the challenges in system chemistry. Constitutional dynamic networks, CDNs, composed of exchangeable components that respond to environmental triggers by self-adaption, provide general means to mimic biosystems. We use the structural and functional information encoded in nucleic acid nanostructures to construct effector (input)-triggered constitutional dynamic networks that reveal adaptable catalytic properties...
June 19, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28626923/comparative-performance-of-deciduous-and-permanent-dental-morphology-in-detecting-biological-relatives
#12
Kathleen S Paul, Christopher M Stojanowski
OBJECTIVES: Dental morphology plays a key role in reconstructing population history and evolutionary relationships at global, regional, and intracemetery scales. At the inter-individual level, it is assumed that close biological kin exhibit greater phenotypic similarity than non-relatives. Heritability estimates provide one measure of phenotypic resemblance but are not easily incorporated into analyses of archaeological samples. In this study we evaluate the assumption that relatives are more similar phenotypically than non-relatives...
June 19, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28626888/clinical-and-radiographic-evaluation-of-early-loaded-narrow-diameter-implants-5-year-follow-up-of-a-multicenter-prospective-clinical-study
#13
Pablo Galindo-Moreno, Peter Nilsson, Paul King, Nils Worsaae, Alexander Schramm, Miguel Padial-Molina, Carlo Maiorana
OBJECTIVE: This study was initiated to evaluate the 5-year implant survival rate and marginal bone levels around a 3.0-mm implant when replacing a single tooth in the anterior region. MATERIALS AND METHODS: The study was designed as a prospective, single-arm, multicenter clinical study. Patients missing 12, 22, 32, 31, 41 or 42 teeth were included, and implants of 3.0 mm diameter and different lengths were placed by a one-stage surgery protocol. Definitive cemented crowns were placed 6-10 weeks later...
June 18, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28626865/positional-changes-of-maxillary-central-incisors-following-orthodontic-treatment-using-single-crown-implants-as-fixed-reference-markers
#14
E B Brahem, B Holm, L Sonnesen, N Worsaae, K Gotfredsen
OBJECTIVES: This follow-up study (1) compares tooth displacement of central incisors in patients with and without pre-implant orthodontic treatment and (2) investigates whether sex, age, or orthodontic retention have an effect on tooth displacement after the insertion of single-crown implants. MATERIALS AND METHODS: Fifty-seven patients - thirty-seven with (test group) and twenty without pre-implant orthodontic treatment (control group) - were rehabilitated with 89 single-crown implants in the upper maxilla...
June 18, 2017: Clinical Oral Implants Research
https://www.readbyqxmd.com/read/28626610/tiny-pollen-grains-first-evidence-of-saururaceae-from-the-late-cretaceous-of-western-north-america
#15
Friðgeir Grímsson, Guido W Grimm, Reinhard Zetter
BACKGROUND: The Saururaceae, a very small family of Piperales comprising only six species in four genera, have a relatively scanty fossil record outside of Europe. The phylogenetic relationships of the four genera to each other are resolved, with the type genus Saururus occurring in both eastern North America and East Asia. No extant species occurs in western Eurasia. The most exceptional find so far has been an inflorescence with in-situ pollen, Saururus tuckerae S.Y.Sm. & Stockey from Eocene of North America with strong affinities to extant species of Saururus...
2017: PeerJ
https://www.readbyqxmd.com/read/28626559/reversible-mechanical-protection-building-a-3d-suit-around-a-t-shaped-benzimidazole-axle
#16
Kelong Zhu, Giorgio Baggi, V Nicholas Vukotic, Stephen J Loeb
The T-shaped benzimidazolium/crown ether recognition motif was used to prepare suit[1]anes. These novel mechanically interlocked molecules (MIMs) were fully characterized by (1)H and (13)C NMR spectroscopy, single-crystal X-ray diffraction, UV-vis absorption and fluorescence spectroscopy. By conversion to a suit[1]ane, a simple benzimidazole was shown to be protected from deprotonation by strong base. Moreover, it was demonstrated that this unique three-dimensional encapsulation can be made reversible, thus introducing the concept of "reversible mechanical protection"; a protecting methodology that may have potential applications in synthetic organic chemistry and the design of molecular machinery...
May 1, 2017: Chemical Science
https://www.readbyqxmd.com/read/28624073/predicting-extension-of-cracks-to-the-root-from-the-dimensions-in-the-crown-a-preliminary-in%C3%A2-vitro-study
#17
Min Chen, Kaiyu Fu, Feng Qiao, Xu Zhang, Yi Fan, Lijun Wang, Peng Li, Zhou Wu, Ligeng Wu
BACKGROUND: In this study, the authors investigated whether extension of a tooth crack into the root can be predicted by the appearance of the crack in the crown in vitro. METHODS: The authors obtained 22 cracked teeth from 22 patients who underwent extraction, and they scanned the teeth using microcomputed tomography. The length and width of the crack on the occlusal surface (LOS and WOS, respectively) and the length of the crack on the proximal surface (LCPS) were measured on 3-dimensional reconstruction images...
June 14, 2017: Journal of the American Dental Association
https://www.readbyqxmd.com/read/28623680/what-are-the-incidence-and-factors-associated-with-implant-fracture
#18
Reza Tabrizi, Hossein Behnia, Shahram Taherian, Nima Hesami
PURPOSE: Implant fracture is a serious complication, which leads to treatment failure. The purpose of this study is to estimate the incidence of implant fractures and identify factors associated with them. MATERIALS AND METHODS: In this retrospective cohort study, the sample was derived from 2 implant centers. The predictors were grouped into the following categories: demographic, location of implant, physical characteristic of implant, implant-abutment connection, type of prosthesis, type of retention, and outcome variable (time to implant fracture)...
May 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28622784/first-trimester-inter-and-intrafetal-size-discrepancies-in-bichorionic-twins-conceived-by-in%C3%A2-vitro-fertilization-can-it-predict-pregnancy-outcome
#19
Ron Bardin, Galia Oron, Yael Levy, Onit Sapir, Israel Meizner, Benjamin Fisch, Arnon Wiznitzer, Eran Hadar
OBJECTIVE: To evaluate the association between first-trimester inter- and intrafetal size discrepancies and pregnancy outcome, among bichorionic-biamniotic twins conceived by IVF. DESIGN: A retrospective study design was used. SETTING: Tertiary university-affiliated medical center. PATIENT(S): All women with a viable first-trimester bichorionic-biamniotic twin gestation, who conceived after IVF in 2007-2015. INTERVENTION(S): None...
June 13, 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/28621890/reference-data-for-babybody-plethysmographic-measurements-in-chinese-neonates-and-infants
#20
Gaoli Jiang, Albert Li, Libo Wang, Liling Qian, Yun Cao, Jianfeng Huang, Chengzhou Wan, Xiaobo Zhang
BACKGROUND AND OBJECTIVE: Population-specific pulmonary function reference data are essential to identify the nature and severity of respiratory diseases. However, there is a lack of reference data for Chinese neonates and infants. The objective of this study was to develop reference data for tidal breathing and plethysmographic measurements for Chinese subjects during the first 2 years of life. METHODS: Data of tidal breathing and plethysmography from healthy Chinese neonates (≤28 days) and infants (1-24 months) using the Jaeger MasterScreen BabyBody were collated...
June 16, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
keyword
keyword
108202
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"