Surface etching and silane heating using Er: YAG and Nd: YAG lasers in dental ceramic luted to human dentin.

2021 ◽  
Author(s):  
Fernanda A. Feitosa ◽  
João P.M. Tribst ◽  
Rodrigo M. Araújo ◽  
César R. Pucci
Keyword(s):  
Dental Ceramic ◽  
Surface Etching ◽  
Yag Lasers ◽  
Human Dentin

The effects of Q-switched YAG lasers on silicone lens implants

1984 ◽  
Author(s):  
Carol F. Boerner ◽  
Leonard I. Sudenfield ◽  
Charles S. Naiman
Keyword(s):  
Yag Lasers

Solution heat treatment with high-power YAG lasers

1993 ◽  
Author(s):  
S. Kimura ◽  
M. Sprenger ◽  
W. Kono ◽  
H. Takahashi ◽  
Y. Tongu
Keyword(s):  
Heat Treatment ◽  
High Power ◽  
Solution Heat Treatment ◽  
Yag Lasers

Effect of a Fluid on the Deformation Behavior of Human Dentin during Diametral Compression

2020 ◽  
Vol 2020 (10) ◽  
pp. 1177-1181
Author(s):  
A. V. Kabanova ◽  
D. V. Zaitsev ◽  
S. S. Grigor’ev ◽  
P. E. Panfilov
Keyword(s):  
Deformation Behavior ◽  
Diametral Compression ◽  
Human Dentin

scholarly journals Deposition of Boron-Doped Thin CVD Diamond Films from Methane-Triethyl Borate-Hydrogen Gas Mixture

Processes ◽  
2020 ◽  
Vol 8 (6) ◽  
pp. 666 ◽  
Author(s):  
Nikolay Ivanovich Polushin ◽  
Alexander Ivanovich Laptev ◽  
Boris Vladimirovich Spitsyn ◽  
Alexander Evgenievich Alexenko ◽  
Alexander Mihailovich Polyansky ◽  
...  
Keyword(s):  
Film Growth ◽  
Chemical Vapor ◽  
Hydrogen Gas ◽  
Diamond Growth ◽  
Structural Defects ◽  
Boron Doped Diamond ◽  
Diamond Deposition ◽  
Synthesis Conditions ◽  
Surface Etching ◽  
Boron Doped

Boron-doped diamond is a promising semiconductor material that can be used as a sensor and in power electronics. Currently, researchers have obtained thin boron-doped diamond layers due to low film growth rates (2–10 μm/h), with polycrystalline diamond growth on the front and edge planes of thicker crystals, inhomogeneous properties in the growing crystal’s volume, and the presence of different structural defects. One way to reduce structural imperfection is the specification of optimal synthesis conditions, as well as surface etching, to remove diamond polycrystals. Etching can be carried out using various gas compositions, but this operation is conducted with the interruption of the diamond deposition process; therefore, inhomogeneity in the diamond structure appears. The solution to this problem is etching in the process of diamond deposition. To realize this in the present work, we used triethyl borate as a boron-containing substance in the process of boron-doped diamond chemical vapor deposition. Due to the oxygen atoms in the triethyl borate molecule, it became possible to carry out an experiment on simultaneous boron-doped diamond deposition and growing surface etching without the requirement of process interruption for other operations. As a result of the experiments, we obtain highly boron-doped monocrystalline diamond layers with a thickness of about 8 μm and a boron content of 2.9%. Defects in the form of diamond polycrystals were not detected on the surface and around the periphery of the plate.

scholarly journals Lasers in glaucoma

1970 ◽  
Vol 2 (1) ◽  
pp. 51-58
Author(s):  
S Kumar
Keyword(s):  
Diode Lasers ◽  
Review Article ◽  
Open Angle ◽  
Yag Lasers

Use of lasers in the treatment of various types of glaucomas is an important aspect in ophthalmic practice. Both Argon and Yag lasers are now-a-days commonly used in the treatment of angleclosure and open-angle glaucomas. Besides this, more recently, Diode lasers are being used for the treatment of the glaucomas. Lasers are also being used in the management of intractable glaucomas which are not controlled by medication alone. In this review article, all these features have been highlighted. Keywords: Lasers; glaucoma DOI: 10.3126/nepjoph.v2i1.3705 Nep J Oph 2010;2(1) 51-58

scholarly journals Three-Dimensional Finite Element Analysis of Stress Distribution in a Tooth Restored with Full Coverage Machined Polymer Crown

2021 ◽  
Vol 11 (3) ◽  
pp. 1220
Author(s):  
Azeem Ul Yaqin Syed ◽  
Dinesh Rokaya ◽  
Shirin Shahrbaf ◽  
Nicolas Martin
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Stress Distribution ◽  
Three Dimensional ◽  
Intraoral Scanner ◽  
Element Analysis ◽  
Dental Ceramic ◽  
Dimensional Finite Element ◽  
Three Dimensional Finite Element ◽  
Ceramic Crown

The effect of a restored machined hybrid dental ceramic crown–tooth complex is not well understood. This study was conducted to determine the effect of the stress state of the machined hybrid dental ceramic crown using three-dimensional finite element analysis. Human premolars were prepared to receive full coverage crowns and restored with machined hybrid dental ceramic crowns using the resin cement. Then, the teeth were digitized using micro-computed tomography and the teeth were scanned with an optical intraoral scanner using an intraoral scanner. Three-dimensional digital models were generated using an interactive image processing software for the restored tooth complex. The generated models were imported into a finite element analysis software with all degrees of freedom concentrated on the outer surface of the root of the crown–tooth complex. To simulate average occlusal load subjected on a premolar a total load of 300 N was applied, 150 N at a buccal incline of the palatal cusp, and palatal incline of the buccal cusp. The von Mises stresses were calculated for the crown–tooth complex under simulated load application was determined. Three-dimensional finite element analysis showed that the stress distribution was more in the dentine and least in the cement. For the cement layer, the stresses were more concentrated on the buccal cusp tip. In dentine, stress was more on the cusp tips and coronal 1/3 of the root surface. The conventional crown preparation is a suitable option for machined polymer crowns with less stress distribution within the crown–tooth complex and can be a good aesthetic replacement in the posterior region. Enamic crowns are a good viable option in the posterior region.

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