Effect of Tea, Coffee and Turmeric Solutions on the Colour of Denture Base Acrylic Resin: An In Vitro Study

Context:Surveys have reported color fading as the most frequent reasons patients given for disliking their prostheses.Aim:The aim of the study is to compare the color variation between two maxillofacial silicone elastomers after subjecting them to extraoral aging conditions.Subjects and Methods:A total of 80 samples were made from M511 Maxillofacial Rubber (Part A: Part B = 10:1) and Z004 Platinum Silicone Rubber (Part A: Part B = 1:1) and divided into two main Groups A and B (40 each). These main groups were then subdivided into five subgroups (A1B1, A2B2, A3B3, A4B4, and A5B5) (n = 8); outdoor weathering, acidic perspiration, sebum (for 6 months), and neutral soap and disinfectant (for 30 h), respectively. Baseline L*a*b* values were recorded. The samples were subjected to the extraoral aging conditions, and the L* a*b* values were recorded after the aging period using a spectrophotometer.Statistical Analysis:The intergroup comparison was done by Kruskal–Wallis test, whereas the intragroup comparison was done by Mann–Whitney test.ResultsAll groups exhibited visually detectable, mean color differences that ranged from 3.06–5.21, except for A4B4. There was no statistical significance between the two materials when subjected to extraoral aging conditions.Conclusions:Visually perceptible and clinically unacceptable color changes occur when exposed to various extraoral aging conditions except for neutral soap solution immersion, for which values of Δ E* were clinically acceptable (ΔE < 3). It can be said for all practical purposes, clinically, the choice between M511 Maxillofacial Rubber (Part A: Part B = 10:1) and Z004 Platinum Silicone Rubber (Part A: Part B = 1:1) would yield more or less the same results, with unacceptable norms in terms of color stability under extraoral aging conditions.

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“…Color difference ΔE was calculated from the mean ΔL*, Δa*, and Δb* values for each specimen with the formula. [ 11 12 13 ]…”

Section: Methodsmentioning

confidence: 99%

A spectrophotometric analysis of extraoral aging conditions on the color stability of maxillofacial silicone

Mehta

Nandeeshwar

2017

J Indian Prosthodont Soc

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“…This difference may be explained by the adsorption property of the resin that was saturated faster with the pigments in OS due to the smaller amount of the matrix. [ 21 ] The measurable differences in color for OS were minimal and once stained, it remained the same over the period. The result of our color stability test relates to color properties of microfilled and hybrid resin composite.…”

Section: Discussionmentioning

confidence: 99%

An in-vitro evaluation of mechanical and esthetic properties of orthodontic sealants

Premaraj

Rohani

Covey³

et al. 2014

Eur J Dent

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Objective:To evaluate mechanical and esthetic Properties of two commercially available orthodontic sealants: Opal®Seal (OS) and L.E.D. Pro Seal (PS).Materials and Methods:Discs of each sealant were prepared to test the following properties: Micro hardness, wear resistance and color stability. Samples were randomly selected after the wear test for SEM imaging to analyze surface morphology.Results:OS was significantly harder than PS (P < 0.001). PS was significantly more wear resistant than OS (P < 0.05). PS showed a greater ∆E*ab (increased staining) when placed in wine or coffee showing a significant difference (P < 0.05). SEM showed particle size, shape and distribution were different for PS and OS reflecting the pattern seen on wear surfaces.Conclusion:Both orthodontic sealants are beneficial for protecting enamel. However with better wear properties PS was superior in resisting mechanical stresses. OS was more color stable.

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“…After deflasking, the specimens were thermo cycled for 1000 cycles between 0 and 60°C with a 60 seconds dwell time. Then, the specimens from each investment were divided into 4 subgroups and immersed into one of the selected beverages at 37°C for one month (16,18).…”

Section: Methodsmentioning

confidence: 99%

A Comparative Study of Heat and Self-Cured Acrylic Resins on Color Stability of 5 Brands of Denture Teeth

Vafaee¹,

Mohammadi²,

Khoshha³

et al. 2015

Avicenna J Dent Res

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Background: Denture teeth play a critical role in overall aesthetic outcomes of removable complete dentures, and long-term maintenance of these outcomes depends on the color stability of the prosthetic teeth. The characteristics of denture base resins play a significant role in prosthetic clinical performance and aesthetics. Objectives: The purpose of this study was to assess the effect of two flasking materials on the color stability of five brands of denture teeth that were immersed in commonly consumed beverages. Materials and Methods:In the present study 560 denture teeth (20 series) were invested with heat-and cold-cured acrylic resin. All the specimens were thermo cycled between 4°C and 60°C, with 60 Seconds dwell times for 1000 cycles. Subsequently, the specimens in each group were divided into four subgroups based on the immersion medium: coffee, tea, cola, or distilled water. Digital images of the teeth were taken before immersion and 30 days after immersion. The color samples were measured using the CIE L * a * b

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Effect of Tea, Coffee and Turmeric Solutions on the Colour of Denture Base Acrylic Resin: An In Vitro Study

Cited by 26 publications

References 2 publications

A spectrophotometric analysis of extraoral aging conditions on the color stability of maxillofacial silicone

A spectrophotometric analysis of extraoral aging conditions on the color stability of maxillofacial silicone

An in-vitro evaluation of mechanical and esthetic properties of orthodontic sealants

A Comparative Study of Heat and Self-Cured Acrylic Resins on Color Stability of 5 Brands of Denture Teeth

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