scholarly journals Trueness and marginal fit of implant-supported complete-arch fixed prosthesis frameworks made of high-performance polymers and titanium: An explorative in-vitro study

2021 ◽  
pp. 103784
Author(s):  
Samir Abou-Ayash ◽  
Martin Schimmel ◽  
Mutlu Özcan ◽  
Burak Oczelik ◽  
Urs Brägger ◽  
...  
Keyword(s):  
High Performance ◽  
In Vitro Study ◽  
Vitro Study ◽  
Marginal Fit ◽  
High Performance Polymers ◽  
Fixed Prosthesis

scholarly journals To Evaluate the Marginal Fit of Metal Copings Fabricated by Conventional Casting Procedure and Direct Metal Laser Sintering Technology – an In Vitro Study

2017 ◽  
Vol 05 (01) ◽  
pp. 039-046 ◽  
Author(s):  
Monica Sharma ◽  
Ajay Bansal ◽  
Sunny Panthi ◽  
Shefali Malik ◽  
Atulya Sharma
Keyword(s):  
Glass Ionomer Cement ◽  
In Vitro Study ◽  
Laser Sintering ◽  
Vitro Study ◽  
Direct Metal Laser Sintering ◽  
Marginal Fit ◽  
Significant Difference ◽  
Group A ◽  
Group B

Abstract Purpose: The purpose of this in vitro study was to evaluate marginal fit of cobalt- chromium (Co-Cr) copings fabricated by direct metal laser sintering system (DMLS) and conventional lost-wax technique (LW). Materials and method: Forty tooth preparations were carried out over extracted mandibular molars. They were divided into two groups A and B of 20 each. For group A Co-Cr copings were fabricated by direct metal laser sintering (DMLS) and for group B by lost wax technique (LW). Glass –ionomer cement (GIC) was used to tack the copings over their preparations. Marginal fit was then evaluated directly under the stereomicroscope. Results: The mean marginal gap of group A was 27.9 ± 2.4 μm and group B was 40.4 ±6 μm. Statistical analysis using t - test showed highly significant difference (P>.05) between the marginal mean of the DMLS (group A) compared to LW (group B). Conclusion: The DMLS copings demonstrated superior marginal fit compared to that of conventional Co-Cr casted copings.

scholarly journals Effect of different impression materials on the marginal fit of frameworks: An in-vitro study

2016 ◽  
Vol 19 (2) ◽  
pp. 145-145
Author(s):  
Ayşe Gözde TÜRK ◽  
Mubin ULUSOY ◽  
Mert YÜCE ◽  
Hakan AKIN
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Marginal Fit ◽  
Impression Materials

scholarly journals Evaluation of marginal fit and internal adaptation of zirconia copings fabricated by two CAD - CAM systems: An in vitro study

2015 ◽  
Vol 15 (2) ◽  
pp. 173 ◽  
Author(s):  
Srinivasan Jayaraman ◽  
BalajiN Rajan ◽  
Baburajan Kandhasamy ◽  
Ilangkumaran Rajakumaran
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Marginal Fit ◽  
Cad Cam ◽  
Internal Adaptation ◽  
Cam Systems

Marginal fit of zirconia copings fabricated after conventional impression making and digital scanning: An in vitro study

2020 ◽  
Vol 124 (2) ◽  
pp. 223.e1-223.e6 ◽  
Author(s):  
Inês Margarida Carrilho Baltazar Vaz ◽  
José Fausto Pimentel Coelho Lino Carracho
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Marginal Fit ◽  
Digital Scanning ◽  
Conventional Impression

Marginal Fit Evaluation of CAD/CAM All Ceramic Crowns Obtained by Two Digital Workflows: An In Vitro Study Using Micro‐CT Technology

2019 ◽  
Vol 28 (9) ◽  
pp. 1037-1043 ◽  
Author(s):  
Ibrahim Salim Duqum ◽  
Christian Brenes ◽  
Gustavo Mendonca ◽  
Thiago Almedia Prado Naves Carneiro ◽  
Lyndon F. Cooper
Keyword(s):  
In Vitro Study ◽  
Vitro Study ◽  
Micro Ct ◽  
Marginal Fit ◽  
All Ceramic ◽  
Cad Cam ◽  
Ct Technology ◽  
Ceramic Crowns

scholarly journals Assessment of Bisphenol A Release by Orthodontic Aligners : In Vitro Study

2020 ◽  
Vol 7 ◽  
Author(s):  
Intissar El Idrissi ◽  
Houda Bouchafra ◽  
Fatima Zaoui ◽  
Amine Cheikh ◽  
Moulay Abbes Faouzi ◽  
...  
Keyword(s):  
Bisphenol A ◽  
High Performance ◽  
Artificial Saliva ◽  
In Vitro Study ◽  
Scientific Data ◽  
Vitro Study ◽  
Technological Advances ◽  
Clear Aligner ◽  
To Receive

Background : In orthodontic practice, for several years we have witnessed the rise of orthodontics for adults who are particularly concerned about their appearance and who most often refuse conventional metal multi-brackets. Technological advances and new materials currently allow patients to receive orthodontic treatments with invisible devices, namely orthodontic aligners. Although the thermoplastic materials that make up these aligners are biocompatible, they are not inert; In order to protect the health of our patients, it has been proposed to demonstrate a possible release of bisphenol A (BPA) by orthodontic aligners and to determine its concentration through an in vitro study. Methods : Our sample consisted of 10 new orthodontic aligners "SCHEU Dental Clear Aligner®" and 10 aged orthodontic aligners from the same supplier recovered after an average stay in the mouth of 15 days. Each aligner was immersed in 30 ml of artificial saliva. Samples were taken regularly for 2 weeks to monitor a possible release of bisphenol over time by high performance liquid chromatography (HPLC).Results : Interpretation of the chromatograms of bisphenol samples in new and aged aligners did not show traces of bisphenol for up to 8 weeks.Conclusion: Further research with a larger sample and a longer duration will lead to more conclusive results since current scientific data report effects at very low doses.

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