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Effect of Self-adhesive Resin Cement and Tribochemical Treatment on Bond Strength to Zirconia

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International Journal of Oral Science 2010年第1期2卷 28-34页

作者： Akikazu Shinya Harunori Gomi Akiyoshi Shinya department of crown and bridge School of Life Dentistry at TokyoThe Nippon Dental University

Aim To evaluate the interactive effects of different self- adhesive resin cements and tribochemical treatment on bond strength to zirconia. Methodology The following self-adhesive resin cements for bonding two zirconia blocks were evaluated： Maxcem （MA）, Smartcem （SM）, Rely X Unicem Aplicap （UN）, Breeze （BR）, Biscem （BI）, Set （SE）, and Clearfil SA luting （CL）. The specimens were grouped according to conditioning as follows： Group 1, polishing with 600 grit polishing paper; Group 2, silica coating with 110 μm Al2O3 particles which modified with silica; and, Group 3, tribochemical treatment - silica coating ＋ silanization. Specimens were stored in distilled water at 37℃ for 24 hours before testing shear bond strength. Results Silica coating and tribochemical treatment significantly increased the bond strength of the MA, UN, BR, B1, SE and CL to zirconia compared to #600 polishing. For both #600 polished and silica coating treatments, MDP- containing self-adhesive resin cement CL had the highest bond strengths to zirconia. Conclusion Applying silica coating and tribochemical treatment improved the bond strength of self-adhesive resin cement to zirconia, especially for CL.

关键词： self-adhesive resin cement zirconia silica coating tribochemical treatment bond strength

Magnification:The game changer in dentistry

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World Journal of Methodology 2025年第2期15卷 74-82页

作者： Sachin Chauhan Radha Chauhan Prashant Bhasin Meenu Bhasin department of Conservative Dentistry and Endodontics Sudha Rustagi College of Dental Sciences and ResearchFaridabad 121002India department of Prosthodontics and crown and bridge and Oral Implantology Mahatma Gandhi Dental College and HospitalJaipur 302022India department of Periodontics Sudha Rustagi College of Dental Sciences and ResearchFaridabad 121002India

During dental examinations and treatments,many dentists are using magni-fication to improve their *** dental operating microscope serves as the most effective tool for this purpose,enhancing the quality,longevity,and outcome of clinical *** review will explore the latest research and data on the importance of magnification devices in dentistry,including diagnostic methods,treatment options and ergonomics in specialities such as restorative dentistry,endodontics,pedodontics,periodontics,and *** review aims to provide insights into the optimal magnification for different clinical situations,the specific benefits of dental operating microscopes for each dental branch,and their limitations.

关键词： Magnification Vision Endodontics Dentistry Dental operating microscope

Synthesis and crystal structure of a neodymium coordination polymer with 2,6-anthraquinonedisulfonate

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Particuology 2010年第3期8卷 221-224页

作者： Jennifer L. Nicholls John Bacsa Andrew M. Fogg department of Chemistry University of Liverpool Crown Street Liverpool L69 7ZD United Kingdom

The coordination polymer, （Nd（H2O）5）2（2,6-AQDS）3.2H2O where 2,6-AQDS = 2,6- anthraquinonedisulfonate, has been synthesised via a hydrothermal route. Structurally, it consists of layers of monomeric Nd polyhedra which are linked by 2,6-AQDS anions forming a polymeric, three-dimensional network. Each Nd atom is nine coordinate, bonding to five water molecules and to four oxygen atoms from four 2,6-AODS anions which in turn pillar the layers by bridging two Nd atoms in one layer, and coordinating to a single Nd in the other.

关键词： Lanthanide Layered materials Sulfonate Coordination polymer

Establishment of Reproducible Xenotransplantation Model of T Cell Acute Lymphoblastic Leukemia in NOD/SCID Mice

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Journal of Huazhong University of Science and Technology(Medical Sciences) 2012年第4期32卷 511-516页

作者：王迪王娜张艳马淑燕耿哲周鹏飞周剑峰黄亮 department of Hematology Tongji HospitalTongji Medical CollegeHuazhong University of Science and Technology crown Bioscience Inc.(Beijing)

T cell acute lymphoblastic leukemia(T-ALL) is an aggressive *** the poor prognosis and low morbidity restrict further analysis of the *** there is an increasing demand to develop animal models for identifying novel therapeutic *** this study,we inoculated the anti-mouse CD122 monoclonal antibody conditioned NOD/SCID mice with the leukemia cells from 9 T-ALL patients and 1 cell line via the tail *** of the 9 patients and the cell line were successfully *** cytometry detected high percentage of human CD45 + cells in recipient *** showed infiltration of human CD45 + cells in different *** transplantation was also *** vivo drug treatment showed that dexamethasone could extend survival,which was consistent with clinical *** results demonstrated that we successfully established 5 xenotransplantation models of T-ALL in anti-mCD122 mAb conditioned NOD/SCID mice,which recapitulated the characteristics of original disease.

关键词： T cell acute lymphoblastic leukemia xenotransplantation NOD/SCID mice in vivo

Element selection for functional materials discovery by integrated machine learning of elemental contributions to properties

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npj Computational Materials 2023年第1期9卷 639-648页

作者： Andrij Vasylenko Dmytro Antypov Vladimir V.Gusev Michael W.Gaultois Matthew S.Dyer Matthew J.Rosseinsky department of Chemistry University of LiverpoolCrown StreetLiverpool L697ZDUnited Kingdom department of Computer Science University of LiverpoolAshton StreetLiverpool L693BXUnited Kingdom

The unique nature of constituent chemical elements gives rise to fundamental differences in *** materials based on their phase fields,defined as sets of constituent elements,before specific differences emerge due to composition and structure can reduce combinatorial complexity and accelerate screening,exploiting the distinction from composition-level *** and evaluation of novelty of materials classes align with the experimental challenge of identifying new areas of *** address this,we present PhaseSelect,an end-to-end machine learning model that combines representation,classification,regression and novelty ranking of phase *** leverages elemental characteristics derived from computational and experimental materials data and employs attention mechanisms to reflect the individual element contributions when evaluating functional performance of phase *** demonstrate this approach for high-temperature superconductivity,high-temperature magnetism,and targeted bandgap energy applications,showcasing its versatility and potential for accelerating materials exploration.

关键词： materials phase elements

Morphometrical findings among dysplasias of oral, cervical and bronchial regions

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Open Journal of Stomatology 2013年第2期3卷 215-222页

作者： Kayo Kuyama Takashi Matsumoto Miyuki Morikawa Akira Fukatsu Mana Ichimura Masanobu Wakami Masahiko Fukumoto Taku Kato Hirotsugu Yamamoto Clinical Laboratory Section Funabashi Municipal Medical Center Chiba Japan department of crown and bridge orosthodontics Nihon University School of Dentistry at Matsudo Chiba Japan department of Diagnostic Pathology Hospital of Nihon University School of Dentistry at Matsudo Chiba Japan department of Laboratory Medicine for Dentistry Nihon University School of Dentistry at Matsudo Chiba Japan department of Oral Pathology Nihon University School of Dentistry at Matsudo Chiba Japan

The purpose of this study was to compare among dysplasia of oral, uterine cervix and bronchus. Using a computer cytomorphometry cell measurement program, the study was based on a retrospective review of smear cases diagnosed with dysplasia of oral, bronchial and uterine cervix, from 2002 to 2010. For 50 - 70 cells from each lesion, nuclear (N) and cytoplasm (C) variables were assessed: area (A), diameter (D), irregularity (I), stain brightness and granularity. NA and ND were highest in OSCC and higher according to dysplastic grading. By contrast, CA and CD were lowest in severe dysplasia. The significant difference of N/C ratio was observed among OSCC to inflammation, mild and moderate dysplasias (p < 0.05). The N/C ratios of mild and moderate dysplasias were equal. Brightness and granularity values of OSCC cases were significantly higher than those of another (p < 0.05). About the difference between mild to moderate dysplasias, it was the easiest to detect of the uterine cervix. All severe dysplasias among the 3 regions were easily identified morphometrically. The deficient in the difference between inflammation to mild dysplasia and mild to moderate dysplasia were obtained in the oral mucosal lesion. The results displayed a significant variation in cytomorphometrical values among the 3 regions. N/C values for uterine cervix and bronchus were well distinguished in comparison with oral dysplasias. Screening of mild and moderate dysplasias requires experience which carries out the comprehensive judgment of the color.

关键词： Exfoliative Cytology Dysplasia Oral Mucosa Cervix Bronchus

The evolutionary consequences of selfish genetic elements

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Current Zoology 2016年第6期62卷 655-658页

作者： Anna K. LINDHOLM Tom A.R. PRICE department of Evolutionary Biology and Environmental Studies University of Zurich Winterthurerstrasse 190 Zurich Switzerland Institute of Integrative Biology University of Liverpool Crown Street Liverpool UK

The traditional view of the genome was once that it is broadly cooperative, with all genes working together amicably to improve the success of the individual as a whole. Benefits to the individual, after all, benefit all the component genes, as fair Mendelian inheritance ensures that all the genes and alleles a parent carries are equally likely to be inherited by an offspring. However, more detailed studies of inheritance have shown that this rosy view of cooperation within the genome is untrue. Instead, many genes act selfishly, manipulating gametogenesis to bias transmission in their favor （Butt and Trivers 2006）. This increases their representation in offspring at a cost to the fitness of the individual and the cooperative genes.

关键词：遗传因素进化基因组孟德尔遗传等位基因合作多基因后代

Complete oral rehabilitation in a case with severe dental fluorosis

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World Journal of Clinical Cases 2014年第12期2卷 938-942页

作者： Nikhil Joshi Jayant Palaskar Mahasweta Joshi Rahul Kathariya department of Prosthodontics Crown Bridge and Implantology Sinhgad Dental College and Hospital STES campus Vadgaon (Budruk) Pune 411041 Maharastra India department of Public Health Dentistry Sinhgad Dental College and Hospital STES Campus Vadgaon (Budruk) Pune 411041 Maharastra India Dr. D.Y Patil Dental College and Hospital Dr. D.Y Vidyapeeth (Deemed University) Pune 411018 Maharashtra India

The authors have presented a technique of full occlusal rehabilitation in a case of severe dental fluorosis. In this technique, maxillary and mandibular anterior teeth were simultaneously prepared and restored first. This was followed by simultaneous preparation of maxillary and mandibular posterior teeth that were restored in canine guided occlusion. The technique and sequence followed here is unique and is not available in dental literature. This technique reduces number of appointments while fulfilling all objectives. Periodontal followup over 3 years was satisfactory. A restorative treatment protocol has been devised for fluorosis which will act as a guide for the dental practitioners.

关键词： Occlusal rehabilitation Dental fluorosis Treatment protocol Restorative management Occlusal plane

Immediate and delayed micro-tensile bond strength of different luting resin cements to different regional dentin

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The Journal of Biomedical Research 2013年第2期27卷 151-158页

作者： Abdelraheem Mohamed Ali Ibrahim Mohamed Hamouda Mohamed Hamed Ghazy Manal Mohamed Abo-Madina department of Conservative Dentistry Faculty of Dentistry Mansoura University department of Dental Biomaterials Faculty of Dentistry Mansoura University department of Conservative Dentistry Faculty of Dentistry Umm Al Qura University crown & bridge Department of Conservative Dentistry Faculty of Dentistry Mansoura University

We sought to evaluate immediate and delayed micro-tensile bond strength of Panavia F2.0 and Multilink Sprint resin cement to superficial, deep and cervical dentin. Thirty-six freshly extracted non-carious human molars were sectioned in the mesiodistal direction to expose three different dentin regions including superficial dentin （1 mm below the dentine-enamel junction）, deep dentin （1 mm above the highest pulp horn） and cervical dentin （0.5 mm above the cemento-enamel junction and 0.5 mm below the dentine-enamel junction）. Resin cements were applied on dentin surfaces and composite blocks were luted under constant seating pressure. Each group was divided into three subgroups according to time intervals. Specimens were sectioned to obtain sticks of 1 mm2 in diameter and subjected to microtensile bond strength testing at a cross head speed of 1 mrn/min. Both resin cements showed higher micro-tensile bond strength to superficial dentin than that to deep or cervical dentin （P 〈 0.001）. Micro-ten- sile bond strengths of Panavia F2.0 were higher than those of Multilink Sprint at different dentin regions （P 〈 0.001）. Immediate ＂micro-tensile bond strengths were higher than those of delayed micro-tensile bond strengths for both resin cements （P 〈 0.001）. It was concluded that resin cements with different chemical formulations and applications yield significantly different micro-tensile bond strengths to different dentin regions.

关键词： immediate and delayed micro-tensile bond strength luting resin cements regional dentin