Dongxiang Zheng

ORCID: 0000-0001-7384-3218
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About
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Research Areas
  • Dental Implant Techniques and Outcomes
  • Dental materials and restorations
  • Bone Tissue Engineering Materials
  • Dental Research and COVID-19
  • Dental Education, Practice, Research
  • Innovations in Medical Education
  • Additive Manufacturing and 3D Printing Technologies
  • Dental Radiography and Imaging
  • Bone Metabolism and Diseases
  • HIV/AIDS oral health manifestations
  • Problem and Project Based Learning
  • Periodontal Regeneration and Treatments
  • Human Pose and Action Recognition
  • Medical and Biological Sciences
  • Laser Applications in Dentistry and Medicine
  • Orthodontics and Dentofacial Orthopedics
  • Biomedical and Engineering Education
  • Calcium Carbonate Crystallization and Inhibition
  • Medical Research and Treatments
  • Advanced materials and composites
  • Radiology practices and education
  • Advanced ceramic materials synthesis
  • Delphi Technique in Research
  • Bacteriophages and microbial interactions
  • E-commerce and Technology Innovations

Capital Medical University
2010-2021

Beijing YouAn Hospital
2021

Institute for Computer Aided Design
2015

This study aims to investigate the effect of sandblasting on surface roughness zirconia and shear bond strength veneering porcelain. Pre-sintered plates were prepared divided into four groups. Group A not treated at all; group B first sandblasted under 0.2 MPa pressure then densely sintered; C D sintered first, 0.4 pressures respectively. Surface was measured 3D reconstructed for specimens, which also analyzed with X-ray diffractometry. Finally after porcelain sintering, tests conducted....

10.4012/dmj.2014-002 article EN Dental Materials Journal 2014-01-01

With the increasing awareness of importance oral health, patients have an need for integrated care from dentists. In China, dentistry examination consists two parts: a practical skills and comprehensive medical examination; to date, no assessment methods that are based on specialized competencies, unlike United States, Canada, other countries, been established. Therefore, purpose this study was construct competency model dentists in China order guide development, admission, training

10.1371/journal.pone.0194411 article EN cc-by PLoS ONE 2018-03-22

Salivary virome is important for oral ecosystem, but there are few reports on people living with HIV. We performed metagenomic sequencing to compare composition and functional genes of salivary virobiota between one HIV-negative four HIV-positive groups in which participants were all men who have sex (MSM) different immunosuppression statuses (five samples per group) find the evidence that plays a role pathogenesis disease. Acute-stage subjects achieved positive result HIV RNA, antibody...

10.3389/fimmu.2021.759253 article EN cc-by Frontiers in Immunology 2021-12-02

This study aimed to investigate the effects of subpressure on bond properties total-etching adhesive dentin. Thirty-six caries-free premolars were sectioned parallel occlusal plane and randomly divided into four groups (n = 9): a control group (C, no treatment) three groups, which treated under 0.8, 0.6 or 0.4 bar after applying adhesives, named S

10.1038/s41598-017-07281-x article EN cc-by Scientific Reports 2017-07-24

This study aimed to improve Ti-porcelain bonding strength through SiO2 modifications. Wax patterns were coated with mixed tetraethoxy silane (group C), without coating used as controls and subdivided into sandblasting group S) polishing P). Castingsurfaces analyzed XRD, while Ti-ceramic interfaces characterized using SEM/EDS. Metal-ceramic specimens tested in three point bending, characterizations also SEM/EDS of porcelain debonding surfaces. In C, Ti5Si3 phases observed; SEM micrograph...

10.4012/dmj.2013-007 article EN Dental Materials Journal 2013-01-01

Yueming Tian, MS/Shuang Tang, MS/Dongxiang Zheng, DDS, MS/Zutai Zhang, PhD/Ning Ding, BDS/Yongmei Li, MS: Purpose: To explore the effect of in situ synthesized particulates on a zirconia surface bonding properties between and porcelain. Materials Methods: Presintered yttrium-stabilized tetragonal (Y-TZP) was cut into slices bars polished with 1,200-grit silicon carbide abrasive paper. Samples were randomly divided six groups (C, I<sub>1</sub>, I<sub>3</sub>, I<sub>5</sub>, I<sub>7</sub>, I9)...

10.11607/ijp.6357 article EN The International Journal of Prosthodontics 2020-06-26

To evaluate the accuracy of intraoral scanners by comparing marginal fit 70 all-ceramic crowns fabricated from both conventional impressions and scans.

10.11607/ijp.8143 article EN The International Journal of Prosthodontics 2022-12-08

The clinical performance can only be evaluated when it comes to the last step in conventional way of prosthesis. However, often causes failure because unconformity between expectation and final performance. Resulting from this kind situation, quality control based on predictable results has been suggested. It is a new idea reverse thinking, focuses need patient puts prosthesis first place. With prosthodontically driven prodedure, dentists complete unification with

10.3760/cma.j.issn.1002-0098.2016.09.001 article EN PubMed 2016-09-01

The advantages and problems encountered in implementing of lecture based learning (LBL),problem-based learning(PBL) case-based (CBL) teaching methods prosthodontics education were analyzed.Specifically,this paper focused on the applications three Capital Medical University,and addresses measures practices using each method delivery.The difficulties these traditional environment provided,as well as programs adaptation education.The forms reform promoted adoption progressive practices,and all...

10.3760/cma.j.issn.1673-677x.2013.03.032 article EN Chinese Journal of Medical Education 2013-06-01

To discuss the influence of reducing buccolingual width artificial crown on distribution biting force and masticatory efficiency in unilateral distal-extension implant denture provide valuable information for design width. find a that prothesis was less evident than those contralateral natural teeth without compromising efficiency.T-Scan II occlusal analyzer 722 grating spectrophotometer were used to analyze denture. Heat-cured resin crowns with three different (group A: standard width;...

10.3760/cma.j.issn.1002-0098.2012.05.003 article EN PubMed 2012-05-01

The paper introduced the contents of “departmental plus comprehensive” clinical practice model for dental students,and analyzed its effects.It was discussed how to make efficient use abundant resources school and department stomatology in general hospitals strengthen competence comprehensive,diagnosis,treatment analysis problem-solving,and improve training quality students. Key words: Oral medicine; Clinical practice; Clinical competence; Training; Discussion

10.3760/cma.j.issn.1673-677x.2012.02.041 article EN Chinese Journal of Medical Education 2012-08-01

Occlusal contact status of teeth is a key indicator for orthodontic and periodontal disease treatment. Digital analysis includes tooth position recognition occlusal distribution estimation. In this study, we propose cascade two-stage point-wise network named Teeth Segmentation Network (TSegNet) based on self-attention mechanism to address segmentation task. And template-based registration method proposed analyze the occlusion. TSegNet, spatial channel attention are used improve performance...

10.1109/bibm52615.2021.9669660 article EN 2021 IEEE International Conference on Bioinformatics and Biomedicine (BIBM) 2021-12-09
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