scholarly journals EFFECT OF POST CURE TREATMENTS ON RESIDUAL MONOMER CONTENT OF TWO COMMERCIALLY AVAILABLE HEAT CURE DENTURE BASE RESINS. AN IN-VITRO STUDY

2020 ◽  
pp. 29-33
Author(s):  
Joy PT ◽  
Mehul R Mahesh ◽  
V.K Zahida ◽  
Gilsa K. Vasunni ◽  
Lylajam S
Keyword(s):  
Gas Chromatography ◽  
Room Temperature ◽  
Water Immersion ◽  
In Vitro Study ◽  
Residual Monomer ◽  
Denture Base ◽  
Heat Cure ◽  
Monomer Content ◽  
Curing Cycle

The presence of Residual monomer content in processed dentures is not desirable. Different methods are used for reducing the residual monomer content after processing. In the present study the effects of two post cure treatments (water immersion and additional curing cycle) on the residual monomer content of two commonly used denture base resins (Acralyn H and Trevalon Hi) were evaluated by using gas chromatography. Study concluded that both water immersion for one day at room temperature and additional curing cycle reduced the residual monomer content in both brands which was initially high after processing.

scholarly journals A GAS CHROMATOGRAPHY STUDY ON THE EFFECT OF TWO DIFFERENT CURING CYCLES ON THE RESIDUAL MONOMER CONTENT OF TWO DIFFERENT HEAT CURE DENTURE BASE RESINS.

2020 ◽  
pp. 4-6
Author(s):  
Joy PT ◽  
Bennett Atlin Correya ◽  
V. K Zahida ◽  
Gilsa K. Vasunni ◽  
Julie George Alapatt
Keyword(s):  
Mechanical Properties ◽  
Gas Chromatography ◽  
Allergic Reactions ◽  
Residual Monomer ◽  
Chromatography Method ◽  
Denture Base ◽  
Heat Cure ◽  
Monomer Content ◽  
Methacrylate Monomer ◽  
Methyl Methacrylate Monomer

The conversion of monomer to polymer is not complete in denture base resins and residual monomer left can cause mucosal irritation, inflammation, and allergic reactions in tissues adjacent to dentures. The mechanical properties of denture base resins have been found to be lacking with increased residual monomer content. Therefore, it is desirable to reduce the residual monomer content in the processed denture. In the present study Gas chromatography method was used to determine the levels of residual methyl methacrylate monomer of two different brands of heat cure denture base resins processed by two different polymerization cycles. The study concluded that while processing the denture sufficient length of boiling phase should be given and for each brand, manufacturer’s instructions should be strictly followed while selecting polymerization cycle.

scholarly journals Effect of incorporation of nanoclay on the properties of heat cure denture base material: An In vitro study

2019 ◽  
Vol 10 (4) ◽  
pp. 658
Author(s):  
AngelMary Joseph ◽  
Suja Joseph ◽  
Nicholas Mathew ◽  
AshwinThomas Koshy ◽  
NamrathaL Jayalakshmi ◽  
...  
Keyword(s):  
Base Material ◽  
In Vitro Study ◽  
Vitro Study ◽  
Denture Base ◽  
Heat Cure

scholarly journals Palatal Vault Depth Influence on the Flexural Strength of Two Heat Cure Acrylic Denture Base Resins: An in vitro Study

2013 ◽  
Vol 14 (6) ◽  
pp. 1131-1136 ◽  
Author(s):  
B Madan Mohan Reddy ◽  
M Himabindu ◽  
B Indira Padmaja ◽  
M Sunil ◽  
N Raja Reddy
Keyword(s):  
Flexural Strength ◽  
Testing Machine ◽  
In Vitro Study ◽  
High Impact ◽  
Vitro Study ◽  
Denture Base ◽  
Heat Cure ◽  
Relationship Of ◽  
Palatal Vault

ABSTRACT Complete dentures often fracture during normal masticatory function. The reason could be due to the shape of the palate, i.e. deep, medium or shallow palatal vault. This in vitro study was performed to determine the relationship of palatal vault depth and flexural strength of two different permanent denture base resins. Edentulous maxillary casts of patients were collected from the department of prosthodontics, among these the cast with the deepest palatal vault was selected. The specimens were then subjected for flexural strength on universal testing machine. The results revealed that the denture bases fabricated on medium palatal vault depth were best in the flexural strength and denture bases on shallow palatal vault depth faired the least. Among the resins the denture bases fabricated using high impact heat cure resin, were better than the denture bases fabricated using regular heat cure resin. All these results were statistically significant except the results between the regular heat cure denture bases and high impact heat cure denture bases fabricated on the deep palatal vault depth. Also the comparison of fracture energies of denture bases fabricated on deep palatal vault with high impact heat cure resin to denture bases fabricated on medium and shallow palatal vaults with high impact heat cure resin were not significant. It was also observed that all the specimens have fractured in the midline. Clinical implications Palatal vault depth significantly affected the flexural strength of heat cure resin. The most frequent mechanical failure of heat cure resin is fracture especially at the midline. The denture bases fabricated using high impact heat cure resin had best flexural strength than the denture bases fabricated using regular heat cure resin which reduced the fractures. How to cite this article Reddy BMM, Himabindu M, Padmaja BI, Sunil M, Reddy NR. Palatal Vault Depth Influence on the Flexural Strength of Two Heat Cure Acrylic Denture Base Resins: An in vitro Study. J Contemp Dent Pract 2013;14(6):1131-1136.

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