scholarly journals Internal Characterization of Denture Base by Using Acrylic Stains and Tissue Paper

2011 ◽  
Vol 11 (3) ◽  
pp. 202-204
Author(s):  
Seema Pattanaik ◽  
Bikash Pattanaik
Keyword(s):  
Denture Base ◽  
Tissue Paper

Thermogravimetric Characterization of the Microstructure Composition of Polyamide Injection Molded Denture Base Material vs Conventional Compression Molded Heat-cured Denture Base Material

2016 ◽  
Vol 17 (2) ◽  
pp. 99-104 ◽  
Author(s):  
Ayman Al-Dharrab ◽  
Lana Shinawi
Keyword(s):  
Weight Loss ◽  
Base Material ◽  
Thermoplastic Resin ◽  
Denture Base ◽  
Excellent Thermal Stability ◽  
Rapid Injection ◽  
Group I ◽  
Injection Molded ◽  
Group Ii

ABSTRACT Background Thermoplastic resin polymers are widely used in medicine due to their biostability and hypoallergenic properties, making them a possible alternative to poly-methylmethacrylate (PMMA). The current research examined the microstructure of a rapid injection molding system thermoplastic resin for construction of flexible denture compared with that of heatcured PMMA. Materials and methods A total of 40 disk-shaped specimens (25 mm in diameter and 3 mm in thickness) were prepared and divided into two groups of 20 disks each (group I samples were of thermoplastic acrylic resin while group II was heat-cured PMMA resin). Results In group I, thermogravimetric analyzer showed that increasing the temperature up to 169°C resulted in about 1.3% of the material loss, and after that the material remains thermally stable up to 200°C. Group II showed 2.24% weight loss at 171°C, and further weight loss (12.025%) was observed on heating to 230°C. Fourier transform infrared (FTIR) spectrophotometer analysis in the range of 400–4000 cm-1 detected the presence of an amine group (N-H) in group I samples and the presence of methylene group attached to inorganic Si as reinforcement filler (Si-CH3). Conclusion Thermoplastic resin displayed excellent thermal stability and the absence of residual monomer within the polymerized material, suggesting its suitability for the fabrication dentures. How to cite this article Al-Dharrab A, Shinawi L. Thermogravimetric Characterization of the Microstructure Composition of Polyamide Injection Molded Denture Base Material vs Conventional Compression Molded Heat-cured Denture Base Material. J Contemp Dent Pract 2016;17(2):99-104.

scholarly journals Formulation and characterization of novel antimicrobial denture base materials

2016 ◽  
Vol 4 ◽  
Author(s):  
Xu Xiaoming ◽  
Wang Yapin ◽  
Herman Jenny ◽  
Maldonado Kyle ◽  
Hamdan Suleiman ◽  
...  
Keyword(s):  
Denture Base ◽  
Base Materials

scholarly journals Chemical Characterization of Denture Base Resin with a Novel Cycloaliphatic Monomer

2019 ◽  
Vol 20 (8) ◽  
pp. 940-946 ◽  
Author(s):  
Sampathkumar JayaKrishnaKumar ◽  
Gunaseelaraj Rajkumar ◽  
Sengottaiyan Arul Kumar ◽  
Radhakrishnan Geethakumari
Keyword(s):  
Chemical Characterization ◽  
Denture Base ◽  
Base Resin ◽  
Denture Base Resin

Characterization of absorbency properties on tissue paper materials with and without “deco” and “micro” embossing patterns

Cellulose ◽  
2021 ◽  
Author(s):  
Flávia P. Morais ◽  
Joana C. Vieira ◽  
António O. Mendes ◽  
Ana M. Carta ◽  
Ana P. Costa ◽  
...  
Keyword(s):  
Tissue Paper

scholarly journals Synthesis and characterization of a ring-opening oxaspiro comonomer by a novel catalytic method for denture base resins

2021 ◽  
Vol 13 (5) ◽  
pp. 521
Author(s):  
Ranganathan Ajay ◽  
Vikraman Rakshagan ◽  
Rajamani Ganeshkumar ◽  
Elumalai Ambedkar ◽  
Shafiullah RahmathShameem ◽  
...  
Keyword(s):  
Ring Opening ◽  
Synthesis And Characterization ◽  
Catalytic Method ◽  
Denture Base

scholarly journals Focus variation technology as a tool for tissue surface characterization

Cellulose ◽  
2021 ◽  
Author(s):  
Jürgen Reitbauer ◽  
Franz Harrer ◽  
Rene Eckhart ◽  
Wolfgang Bauer
Keyword(s):  
Surface Characterization ◽  
Final Analysis ◽  
Surface Characteristics ◽  
Interfacial Area ◽  
Wide Field ◽  
Tissue Paper ◽  
Spatial Frequencies ◽  
Tissue Surface ◽  
Focus Variation

Abstract The surface of tissue paper is relatively complex compared to other paper grades and consists of several overlapping structures like protruding fibres, crepe and fabric-based patterns at different spatial frequencies. The knowledge of tissue surface characteristics is crucial when it comes to improvement with respect to surface softness and the perceptual handfeel of tissue products. In this work we used the optical based, non-contact measurement principle of focus variation for surface characterization of dry-creped, textured and through air dried (TAD) tissue. Based on the three tissue grades, a procedure which includes the characterization of the whole tissue surface throughout different scales within one setup, was developed. Surprisingly, focus variation was rarely used in tissue-related research, as it provides robust and reliable 3D surface information which can be used for further areal surface analysis. Special attention was given to the preparation and discussion of the raw data up to the final analysis including several spatial filtering steps. Enhanced surface parameters like the developed interfacial area ratio (Sdr) and the power spectral density (PSD) were used to describe the surface adequately. The surface roughness of the three tissue grades was compared, with the textured tissue showing the highest roughness in Sdr and PSD analysis. Although both methods are based on different principles, a high correlation in terms of evaluated roughness is evident. Regular structures like crepe and patterns are obtainable as peaks at the respective frequency with a certain intensity in the PSD evaluation. Apart from topography in terms of structures and roughness, the wide field of view of the focus variation measurement also allows assessment of effects related to flocculation and sheet formation. The developed procedure could also be appropriate for other fibre based materials and/or fabrics, which are similar to tissue with respect to optical properties such as for example nonwovens. Graphic abstract

Superficial and Inner Examination of a Microwave-Irradiated Dental Acrylic Resin and Its Metal–Polymer Interface

2018 ◽  
Vol 24 (1) ◽  
pp. 49-59 ◽  
Author(s):  
Marian C. Popescu ◽  
Bogdan I. Bita ◽  
Vasilica Tucureanu ◽  
Dan Vasilache ◽  
Melania A. Banu ◽  
...  
Keyword(s):  
Steel Wire ◽  
Acrylic Resin ◽  
Infrared Spectrometry ◽  
Denture Base ◽  
Polymer Interface ◽  
Structural Evaluation ◽  
Dental Acrylic ◽  
Extended Surface ◽  
Metal Polymer

AbstractThe aim of this study is to conduct an extended surface and cross-section characterization of a denture base acrylic resin subjected to 500, 650, and 750 W microwave irradiation for 2, 3, and 5 min to assess its morphological modifications. A commercial heat-cured powder was polymerized according to the manufacturer’s specifications and distributed into 20 circular samples. A stainless-steel wire was partially embedded in half of the discs, in order to investigate the metal–polymer interface. High-resolution scanning electron microscopy (SEM) imaging, white light interferometry, roughness measurements and Fourier transform infrared spectrometry were employed for morphological and structural evaluation of the irradiated polymer. Superficial adaptation was discovered after 5 min exposure at 500 W, 650 W, and 750 W, revealing significant roughness correction for 750 W. SEM characterization revealed the inner alteration of the resin for the 750 W protocol and a metal–polymer gap developed regardless of the irradiation conditions. The considerable temperature fluctuations that the samples were subject to during the experiments did not essentially change the poly(methyl-methacrylate) bond structure.

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