Results 31 to 40 of about 306,878 (306)

Research on nonlinear dynamic model and characteristics of a spur gear pair considering the meshing state of multiple pairs of teeth

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2021
A meshing cycle of normal contact ratio gear can be divided into three stages, i.e., double pairs of teeth meshing, single pair of teeth meshing and double pairs of teeth meshing. In many previous literatures, for the convenience of research, the dynamic
Rui XU, Jing ZHANG, Jiugen WANG, Renjun LI   +3 more
doaj   +1 more source

The Effect of Acrylic Resin Recycling on The Hardness of Artificial Acrylic Resin Denture Teeth [PDF]

Al-Rafidain Dental Journal, 2009
Aims: To evaluate the effect of recycling of denture base on the surface hardness of artificial acrylic denture teeth. Materials and methods: thirty identical artificial acrylic denture teeth of two types (cross linked and conventional denture teeth ...
Mohammed M Sadoon, Ali'a W Omari , Nada Z Mohammed   +2 more
doaj   +1 more source

The Effect of Amino Acids on the Formation of Amorphous Calcium Carbonate Nanoparticles

Advanced Functional Materials, EarlyView.
Biomineral formation often proceeds via the assembly of amorphous calcium carbonate (ACC) nanoparticles with narrow size distributions. Using in situ SAXS coupled to a stopped‐flow device, we follow synthetic ACC formation with a 10 ms time resolution and show that amino acids narrow the size distribution at low supersaturation, highlighting their key ...
Lucas Kuhrts, Hadar Shaked, Johanna Sklar, Almog Sulam, Iryna Polishchuk, Elena Prudnikov, Gouranga Manna, Michael Sztucki, Sylvain Prevost, Alexander Katsman, Boaz Pokroy   +10 more
wiley   +1 more source

The root canal morphology of mandibular anterior teeth and its correlation with the occurrence of three-rooted mandibular first molars [PDF]

Kouqiang yixue
Objective To study the root canal morphology of permanent mandibular anterior teeth and explore its correlation with the occurrence of three-rooted mandibular molars using cone beam computed tomographic (CBCT) imaging.
ZHU Peng, GU Yongchun, WU Yihan, XU Xiaoming
doaj   +1 more source

Unilateral double teeth in primary dentition

Universal Research Journal of Dentistry, 2015
Odontogenic anomalies can occur as a result of conjoining or twinning defects. The phenomenon of tooth fusion arises through the union of two normally separated tooth germs and depending upon the stage of development of the teeth at the time of union, it may be either complete or incomplete.
IE Neena, Sidhanth Pathak, SR Anitha, P Poornima   +3 more
openaire   +1 more source

Structural Porosity and Low Mineral Density in Enamel Rods Drive Molar Incisor Hypomineralisation

Advanced Functional Materials, EarlyView.
This study uses advanced imaging modalities on multiple length scales to show that molar‐incisor hypomineralization does not present as a locally homogeneous pathology. Instead, microstructural defects, characterized through non‐mineralized, protein‐rich sheaths and an altered mineral structure in between prism rods, resulting in local differences in ...
Katharina Jähn‐Rickert, Johannes Krug, Gudrun Lotze, Imke A.K. Fiedler, Diana Freund, Ezgi Deniz Türkoğlu, Christine Plumeyer, Felix N. von Brackel, Anton Davydok, Manfred Burghammer, Thomas Beikler, Thomas F. Keller, Katrin Bekes, Elizabeth A. Zimmermann, Björn Busse   +14 more
wiley   +1 more source

Teeth Stuck Togther:A Double Teeth Anomaly

International Journal of Clinical & Medical Imaging, 2015
A great number of abnormalities in form and number of teeth is congenital. These abnormalities are manifested in a decreased or increased number of teeth or just in changes of tooth form. The term of double teeth is a dental anomaly which a single-tooth germ tries to produces two teeth.
openaire   +1 more source

Micro and Nanostructural Diversity of Lizard Osteoderm Capping Tissue in Relation to Mechanical Performance

Advanced Functional Materials, EarlyView.
This study shows that lizard osteoderm capping tissue is a hyper‐mineralized hydroxyapatite layer consistently covering the superficial osteoderm surface in those species studied here, yet it varies greatly in morphology, nanostructure, and mechanical performance across species.
Adrian Rodriguez‐Palomo, Marius Didziokas, Malene Siri Berg Jacobsen, Thorbjørn Erik Køppen Christensen, Innokenty Kantor, Mads Ry Vogel Jørgensen, Klaus Pagh Almtoft, Jesper Skovhus Thomsen, Anthony Herrel, Catherine J.A. Williams, Henrik Birkedal   +10 more
wiley   +1 more source

The Effect of Partially Exposed Connective Tissue Graft on Root‐Coverage Outcomes: A Systematic Review and Meta‐Analysis [PDF]

, 2018
The aim of this systematic review was to compare the root‐coverage outcomes of using a partially exposed connective tissue graft (CTG) technique with a fully covered CTG technique for root coverage.
Albandar, Baldi, Berlucchi, Boltchi, Borghetti, Bouchard, Bruno, Byun, Chambrone, Christgau, Cohen, Cordioli, Grupe, Guiha, Hagewald, Hall, Han, Harris, Huang, Hwang, Journee, Karring, Kassab, Kim, Langer, Langer, Liberati, Ling, Machtei, McGuire, Miller, Nelson, Oates, Raetzke, Salhi, Slim, Stetler, Sullivan, Tarnow, Trombelli, Zabalegui, Zucchelli   +41 more
core   +2 more sources

Metronidazole‐Loaded Cyclodextrin Nanogels for Antibacterial Therapy and Microbiota Regulation in Periodontitis

Advanced Healthcare Materials, EarlyView.
A methacrylamide β‐cyclodextrin‐based nanogel (MACD nGel) is developed to load the antimicrobial drug Metronidazole (MNZ) for topical delivery for the treatment of periodontitis. It is demonstrated that cyclodextrin nanogel (nGel) loaded with metronidazole provides an efficient drug delivery route but also has potential clinical applications and offers
Yanjing Ji, Ruichen Zhang, Dongyi Xu, Patrick C. A. van der Wel, Alessia Lasorsa, Guotai Li, Fangze Guo, Qihui Zhou, Patrick van Rijn   +8 more
wiley   +1 more source