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https://www.readbyqxmd.com/read/29781768/guided-bone-regeneration-and-implant-placement-in-association-with-a-coronally-positioned-palatal-sliding-flap-a-17-year-follow-up-case-report
#1
Carlo Maiorana, Pier Paolo Poli, Mario Beretta
The aim of the present case report was to show the 17-year hard and soft tissues stability of guided bone regeneration procedure associated with dental implants insertion. A 52-year-old male patient presented with a partial edentulism in the upper right maxilla. A graft consisting of deproteinized bovine bone mineral and autogenous bone stabilized by a non-resorbable expanded polytetrafluoroethylene membrane was used to reconstruct the missing bone applying the biological principles of guided bone regeneration...
May 21, 2018: Journal of Oral Implantology
https://www.readbyqxmd.com/read/29781544/a-crown-shaped-ru-substituted-arsenotungstate-for-selective-oxidation-of-sulfides-with-hydrogen-peroxide
#2
Jingyang Niu, Mengdan Han, Yanjun Niu, Rong Wan, Qiaofei Xu, Jingkun Lu, Pengtao Ma, Chao Zhang, Jingping Wang
An acetate-bridged Ru-substituted arsenotungstate [H2N(CH3)2]14[As4W40O140{Ru2(CH3COO)}2]*22H2O (1) has been synthesized and structurally characterized, in which four Ru atoms occupy all lacunary S2 sites of the crown-shaped polyanion [As4W40O140]28 and each Ru atom is coordinated by one As atom and five 2-O atoms including four from S2 site and one from the acetate ligand. Notably, the novel coordination pattern of Ru atom in polyoxometalates (POMs) chemistry has been presented unprecedentedly, which is the formation of RuAs bond with the length of 2...
May 21, 2018: Chemistry: a European Journal
https://www.readbyqxmd.com/read/29781370/re-treatment-of-an-unruptured-anterior-communicating-artery-aneurysm-using-the-new-pconus-2-device-description-of-a-case
#3
Marco Varrassi, Sergio Carducci, Aldo V Giordano, Carlo Masciocchi
Endovascular approach represents today the first option in treatment of ruptured and unruptured cerebral aneurysms. Nevertheless, wide-neck bifurcation aneurysms still represent a technical challenge for endovascular treatment due to the need to protect vessels arising next to the aneurysmal neck. A variety of devices have been implemented to ensure adequate assistance for coiling of these lesions. Among these devices, the new pCONus 2 represents an evolution of the well-known pCONus; compared to the previous one in fact, it allows a degree of articulation and flexibility between the shaft and the distal part (crown), making it more suitable for treatment of aneurysms presenting an angle between the longitudinal axis of the dome and parent vessel...
January 1, 2018: Interventional Neuroradiology
https://www.readbyqxmd.com/read/29781076/first-trimester-combined-screening-for-fetal-aneuploidies-enhanced-with-additional-ultrasound-markers-an-8-year-prospective-study
#4
Dragos Nemescu, Adina Bratie, Alexandra Mihaila, Dan Navolan, Adina Tanase
OBJECTIVES: To describe our screening population and audit of the performance of first-trimester screening for Down syndrome, based on a combined test, enhanced with additional ultrasound markers, over the whole period of the study. MATERIAL AND METHODS: We performed a prospective study from 2009 to 2016, which included 1358 singleton fetuses with a crown-rump length of 45-84 mm. The risk of aneuploidy was calculated using nuchal translucency, fetal heart rate (FHR), and additional markers, such as nasal bone (NB), tricuspid flow (TF) and ductus venosus (DV), combined with maternal serum free β-human chorionic gonadotropin (fβ-hCG) and pregnancy-associated plasma protein-A (PAPP-A)...
2018: Ginekologia Polska
https://www.readbyqxmd.com/read/29780732/effect-of-fixed-metallic-oral-appliances-on-oral-health
#5
REVIEW
Ahmad Alnazzawi
There is a substantial proportion of the population using fixed metallic oral appliances, such as crowns and bridges, which are composed of various dental alloys. These restorations may be associated with a number of effects on oral health with variable degrees of severity, to review potential effects of using fixed metallic oral appliances, fabricated from various alloys. The MEDLINE/PubMed database was searched using certain combinations of keywords related to the topic. The search revealed that burning mouth syndrome, oral pigmentation, hypersensitivity and lichenoid reactions, and genotoxic and cytotoxic effects are the major potential oral health changes associated with fixed prosthodontic appliances...
March 2018: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/29780352/the-nomogram-of-penile-length-and-circumference-in-iranian-term-and-preterm-neonates
#6
Fahimeh Soheilipour, Farzaneh Rohani, Elham Hashemi Dehkordi, Roya Isa Tafreshi, Parisa Mohagheghi, Seyed-Mohammadsalar Zaheriani, Fatemeh Jesmi, Hamid Salehiniya
Background and objectives: The normal length of penis in preterm and term neonates is different among different nations, and is affected by various factors. The present study aimed to determine stretched penile length (SPL) values and cutoff level of micropenis in term and preterm Iranian neonates, for the first time. Materials and methods: All male neonates born in two general hospitals of Tehran (Akbarabadi, and Rasoul hospitals), center of Iran, with gestational age of 28-42 weeks were included and their SPL and penile circumference (PC) were examined on the first 3 days after birth by the same physician...
2018: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/29780246/remineralization-potential-of-nano-hydroxyapatite-on-enamel-and-cementum-surrounding-margin-of-computer-aided-design-and-computer-aided-manufacturing-ceramic-restoration
#7
Niwut Juntavee, Apa Juntavee, Preeyarat Plongniras
Objective: This study investigates the effects of nano-hydroxyapatite (NHA) gel and Clinpro (CP) on remineralization potential of enamel and cementum at the cavosurface area of computer-aided design and computer-aided manufacturing ceramic restoration. Materials and methods: Thirty extracted human mandibular third molars were sectioned at 1 mm above and below the cemento-enamel junction to remove the cemento-enamel junction portions and replaced them with zirconia ceramic disks by bonding them to the crown and root portions with resin cement...
2018: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/29779218/an-analysis-of-the-timing-and-materials-associated-with-pulp-disease-following-restorative-dental-treatment
#8
J B Yong, S Sivarajan, P V Abbott
AIM: To assess whether the timing of pulp disease after tooth restoration was associated with type of restorative dental material used, extent of the restoration, or tooth type. METHODOLOGY: A comprehensive search and analysis of data using the Titanium Oral Health Management software program at The Oral Health Centre of Western Australia was performed to correlate procedural codes for teeth that had restorations placed and subsequently developed pulp disease requiring endodontic treatment or extraction from 1st January 2009 to 31st December 2013...
May 19, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29779182/locator%C3%A2-versus-ceramic-electroplated-double-crown-attachments-a-prospective-study-on-the-intraindividual-comparison-of-implant-supported-mandibular-prostheses
#9
Silvia Brandt, Jan Brandt, Ali-Reza Ketabi, Hans-Christoph Lauer, Anna Kunzmann
OBJECTIVES: Implant-supported overdentures are an established dental treatment mode. The aim of this prospective study was and interindividual comparison of patient satisfaction with restorations retained by a prefabricated and thus inexpensive attachment system (Locator®) or with a technologically complex and thus expensive attachment system (ceramic/electroplated double crowns) with similar retentive performance. MATERIALS AND METHODS: Twelve patients received a Locator and a double-crown prosthesis in a crossover study for test periods of 3 months each...
May 19, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29775299/viologen-based-rotaxanes-from-dibenzo-30-crown-10
#10
Hanlie R Wessels, Carla Slebodnick, Harry W Gibson
Three [2]rotaxanes (4, 7 and 12) and one [3]rotaxane (8) were synthesized based on the dibenzo-30-crown-10/viologen binding motif. To the best of our knowledge, these are the first rotaxanes formed from dibenzo-30-crown-10 and viologens. The rotaxanes were all characterized by 1 H NMR, 13 C NMR, and HRMS. An X-ray crystal structure of one of the [2]rotaxanes (7) was obtained. This work demonstrates for the first time that dibenzo-30-crown-10 does form pseudorotaxane complexes with viologens in solution.
May 18, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29775157/blood-based-biomarkers-in-breast-cancer-from-proteins-to-circulating-tumor-cells-to-circulating-tumor-dna
#11
Michael J Duffy, Enda W McDermott, John Crown
Biomarkers are the key to personalized treatment in patients with breast cancer. While tissue biomarkers are most useful in determining prognosis and upfront predicting response to therapy, circulating protein biomarkers such as CA 15-3 and carcinoembryonic antigen are mainly used in monitoring response to endocrine or chemotherapy in patients with advanced disease. Although several centers measure biomarkers in asymptomatic patients following curative surgery for primary breast cancer, the clinical utility of this practice is unclear...
May 2018: Tumour Biology: the Journal of the International Society for Oncodevelopmental Biology and Medicine
https://www.readbyqxmd.com/read/29775053/uranyl-tri-bis-silyl-amide-alkali-metal-contact-and-separated-ion-pair-complexes
#12
Philip J Cobb, David J Moulding, Fabrizio Ortu, Simon Randall, Ashley J Wooles, Louise S Natrajan, Stephen T Liddle
We report the preparation of a range of alkali metal uranyl(VI) tri- bis(silyl)amide complexes [{M(THF) x }{(μ-O)U(O)(N″)3 }] (1M) (N″ = {N(SiMe3 )2 }- , M = Li, Na, x = 2; M = K, x = 3; M = K, Rb, Cs, x = 0) containing electrostatic alkali metal uranyl-oxo interactions. Reaction of 1M with 2,2,2-cryptand or 2 equiv of the appropriate crown ether resulted in the isolation of the separated ion pair species [U(O)2 (N″)3 ][M(2,2,2-cryptand)] (3M, M = Li-Cs) and [U(O)2 (N″)3 ][M(crown)2 ] (4M, M = Li, crown = 12-crown-4 ether; M = Na-Cs, crown = 15-crown-5 ether)...
May 18, 2018: Inorganic Chemistry
https://www.readbyqxmd.com/read/29773838/impact-of-timing-of-trastuzumab-initiation-on-long-term-outcome-of-patients-with-early-stage-her2-positive-breast-cancer-the-one-thousand-her2-patients-project
#13
Giuseppe Gullo, Naomi Walsh, David Fennelly, Reetesh Bose, Janice Walshe, Dimitrios Tryfonopoulos, Kate O'Mahony, Lisa Hammond, Nuno Silva, Deirdre McDonnell, Josephine Ballot, Cecily Quinn, Enda W McDermott, Denis Evoy, Ruth Prichard, James Geraghty, John Amstrong, John Crown
BACKGROUND: The optimal timing of (neo)adjuvant trastuzumab initiation with respect to chemotherapy and surgery remains undefined. METHODS: Retrospective analysis of a large institutional database of HER2-positive patients who received anti-HER2 therapy. We included all Stage I to III patients treated with trastuzumab with a minimum follow up of 3 years. The date of first breast biopsy was recorded as initial diagnosis. RESULTS: A total of 506 patients [adjuvant: 386 (76%)-neo-adjuvant: 120 (24%)] were included...
May 18, 2018: British Journal of Cancer
https://www.readbyqxmd.com/read/29772930/changes-in-oral-health-related-quality-of-life-ohrqol-related-to-long-term-utilization-of-dental-care-among-older-people
#14
Anne Nordrehaug Åstrøm, Gunnar Ekback, Sven Ordell, Ferda Gulcan
OBJECTIVE: To examine whether long-term utilization of dental care, treatment with fillings and crowns and persistent tooth loss between age 50 and 65 years associate with subsequent changes in OHRQoL from age 65 to 70 years. METHOD: In 1992, a census of 50-year-olds received invitation to participate in a questionnaire survey. Of 6346 respondents, 3585 completed follow-ups in 1997, 2002, 2007 and 2012. OHRQoL was measured using the Oral Impacts on Daily Performances (OIDP) inventory...
May 18, 2018: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/29772034/three-dimensional-analysis-of-internal-adaptations-of-crowns-cast-from-resin-patterns-fabricated-using-computer-aided-design-computer-assisted-manufacturing-technologies
#15
Yushu Liu, Hongqiang Ye, Yong Wang, Yijao Zhao, Yuchun Sun, Yongsheng Zhou
PURPOSE: To evaluate the internal adaptations of cast crowns made from resin patterns produced using three different computer-aided design/computer-assisted manufacturing technologies. MATERIALS AND METHODS: A full-crown abutment made of zirconia was digitized using an intraoral scanner, and the design of the crown was finished on the digital model. Resin patterns were fabricated using a fused deposition modeling (FDM) 3D printer (LT group), a digital light projection (DLP) 3D printer (EV group), or a five-axis milling machine (ZT group)...
May 17, 2018: International Journal of Prosthodontics
https://www.readbyqxmd.com/read/29767841/lignin-composition-is-related-to-xylem-embolism-resistance-and-leaf-life-span-in-trees-in-a-tropical-semiarid-climate
#16
Taysla R A Lima, Ellen C D Carvalho, Fernando R Martins, Rafael S Oliveira, Rafael S Miranda, Caroline S Müller, Luciano Pereira, Paulo R L Bittencourt, Jullyana C M S M Sobczak, Enéas Gomes-Filho, Rafael C Costa, Francisca S Araújo
Wood properties influence the leaf life span (LL) of tree crowns. As lignin is an important component of wood and the water transport system, we investigated its relationship with embolism resistance and the LL of several tree species in a seasonally dry tropical ecosystem. We determined total lignin and the monomer contents of guaiacyl (G) and syringyl (S) and related them to wood traits and xylem vulnerability to embolism (Ψ50 ) for the most common species of the Brazilian semiarid, locally known as Caatinga...
May 16, 2018: New Phytologist
https://www.readbyqxmd.com/read/29767210/low-threshold-lasing-from-colloidal-cdse-cdsete-core-alloyed-crown-type-ii-heteronanoplatelets
#17
Yuan Gao, Mingjie Li, Savas Delikanli, Haiyang Zheng, Baiquan Liu, Cuong Dang, Tze Chien Sum, Hilmi Volkan Demir
Colloidal type-II heterostructures are believed to be a promising solution-processed gain medium given their spatially separated electrons and holes for the suppression of Auger recombination and their wider emission tuning range from the visible to near-infrared region. Amplified spontaneous emission (ASE) was achieved from colloidal type-II core/shell nanocrystals several years ago. However, due to the limited charge-transfer (CT) interfacial states and minimal overlap of electron and hole wave functions, the ASE threshold has still been very high...
May 16, 2018: Nanoscale
https://www.readbyqxmd.com/read/29766644/evaluation-of-the-influence-of-implant-placement-timing-on-the-esthetic-outcomes-of-single-tooth-implant-treatment-in-the-anterior-maxilla-a-retrospective-study
#18
Himanshu Arora, Saso Ivanovski
OBJECTIVES: The purpose of this retrospective study was to investigate the influence of implant placement timing on the esthetic outcomes for single implants in the anterior maxilla. MATERIALS AND METHODS: One hundred and ten patients (48 males; 62 females) who received a single-tooth implant after extraction either immediately (Type 1); after 4-8 weeks (Type 2); after 8-16 weeks (Type 3); or more than 16 weeks (Type 4) were evaluated in terms of esthetic outcomes after a mean post-placement interval of 26...
May 15, 2018: Journal of Esthetic and Restorative Dentistry
https://www.readbyqxmd.com/read/29766617/gingival-tissue-reaction-to-direct-adhesive-restoration-a-preliminary-study
#19
Carlo Bertoldi, Davide Zaffe, Luigi Generali, Andrea Lucchi, Pierpaolo Cortellini, Emanuela Monari
INTRODUCTION: It is debated if composite resin marginal/submarginal direct restoration can be usefully performed without inflammatory consequences. This histological study is the first human analysis aimed to compare, in the same tooth, the gingival tissue close to composite resin restorations with gingival tissue close to hard tissue. METHODS: Eight healthy patients with almost a residual strategic tooth needing endodontic therapy, and post-and-core restoration, then indirect prosthetic restoration, were selected...
May 16, 2018: Oral Diseases
https://www.readbyqxmd.com/read/29766409/where-youth-matters-clinicopathologic-characteristics-and-emerging-trends-in-treatment-and-outcomes-in-young-irish-women-with-breast-cancer
#20
Megan Greally, Jennifer Kielty, Geoffrey A Watson, Geoffrey Das, Christina Malouf, Lynda McSorley, Niamh Coleman, Cecily Quinn, Enda W McDermott, Giuseppe Gullo, John Crown, Ruth S Prichard, Catherine M Kelly, Janice M Walshe
BACKGROUND: Young women with breast cancer (YWBC) represent 7-12% of breast cancer diagnoses and ostensibly have more biologically aggressive subtypes with higher relapse and mortality rates. We studied the clinical and pathological characteristics in YWBC and examined how outcomes and treatment have evolved. METHODS: YWBC were identified from pathology databases at two tertiary centers. Patients were divided into two cohorts: those diagnosed from 2000 to 2005 (C1) and from 2006 to 2015 (C2)...
May 15, 2018: Irish Journal of Medical Science
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