scholarly journals Temperature variations in sintering ovens for metal ceramic dental prostheses: Non-destructive assessment using OCT

2018 ◽  
Author(s):  
Virgil-Florin Duma ◽  
Cosmin Sinescu ◽  
Adrian Bradu ◽  
Florin I. Topala ◽  
Meda Lavinia Negrutiu ◽  
...  
Author(s):  
Stepanov V.A. ◽  
Shemonaev V.I. ◽  
Buyanov E.A. ◽  
Grachev D.V. ◽  
Parchomenko A.N. ◽  
...  

The article presents the results of evaluating the prototyping of metal-ceramic structures made by casting and selective laser sintering. To achieve this goal, 27 patients with fabricated metal-ceramic crowns and bridgeworks were examined. Two study groups were created. The first group included 14 patients for whom dental prosthesis frameworks were made by casting. The second group consisted of 13 people, for whom the frames of dentures were made by the method of selective laser sintering. The analysis of clinical effectiveness was carried out according to the following criteria: 1- precision of the felling of prosthesis frame to solid tissues of abutment teeth; 2- the condition of the marginal periodontium; 3- the integrity of the ceramic cladding. The results of the study showed that the precision to solid tooth tissues of metal-ceramic dental prostheses made by laser selective sintering is higher than of frames made by casting. In accordance to the second criteria the best results were also shown by the participants of the second group. No chipping of the ceramic veneer from the metal-ceramic denture frameworks made by laser selective sintering was found. Thus, dentures which frameworks are made by the method of selective laser sintering are characterized by a higher objective assessment of their precision to the solid tissues of the abutment teeth. Lesions of the marginal periodontium both inflammatory and dystrophic were less in the participants of the second group. The frequency of defects in the coating of metal-ceramic dentures was significantly lower in the case of fabrication frameworks by laser selective sintering.


2020 ◽  
Vol 151 (4) ◽  
pp. 230-238.e7 ◽  
Author(s):  
Alvaro Limones ◽  
Pedro Molinero-Mourelle ◽  
Luis Azevedo ◽  
Marta Romeo-Rubio ◽  
André Correia ◽  
...  

2015 ◽  
Vol 2015 ◽  
pp. 1-5 ◽  
Author(s):  
Abdulaziz Samran ◽  
Mohammad Zakaria Nassani ◽  
Marwan Aswad ◽  
Amid Abdulkarim

The aim of this paper is to report a clinical case with bilateral missing mandibular second premolars that were restored by metal-ceramic inlay-retained fixed dental prostheses. The first prosthesis was of a traditional design and the second was of a modified design. The suggested design is created by modifying the retainer wings of the traditional resin-bonded inlay-retained fixed dental prosthesis and covering the wings with composite resin. The modified design is relatively conservative, esthetic and provides an extra element for the retention of posterior metal-ceramic inlay-retained fixed dental prostheses.


2013 ◽  
Vol 23 (2) ◽  
pp. 73-82 ◽  
Author(s):  
Josephine F. Esquivel-Upshaw ◽  
Arthur E. Clark ◽  
Jonathan J. Shuster ◽  
Kenneth J. Anusavice

Author(s):  
Vitaliy Anatol’evich Parunov ◽  
M. A Kareva ◽  
S. D Tykochinskiy ◽  
I. Yu Lebedenko

The article shows the creation of a new Russian base alloy of palladium for metal-ceramic dental prostheses “Palladini UNI” puteam comprehensive analysis of the influence of alloying elements on the phase structure of the palladium alloys, physical and mechanical properties and coefficient of thermal linear expansion.


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