| dc.description.abstract | Thermoplastic nylon is a flexible denture base material that is currently in great
demand because it has many advantages. Although it has many advantages,
thermoplastic nylon also has a weakness, namely low color stability. There are several
factors that can affect the color stability of thermoplastic nylon denture bases, namely
intrinsic factors and extrinsic factors. Intrinsic factors include changes in the chemical
structure of the material and extrinsic factors include the adhesion or penetration of
dyes from outside sources such as colored drinks and foods, coffee, tea, or cleaning
agents. According to study, beets are one of the fruits that are recommended for
consumption by cancer sufferers because they contain antioxidants, anti-carcinogens,
polyphenols, flavonoids, color pigments, and other beneficial nutrients. Consuming
beets for a long time by users of thermoplastic nylon denture bases can affect the color
stability of the denture base. Nylon is in great demand as a denture base because it has
excellent aesthetic value due to the absence of metal attachments and has attachments
that are the same color as the soft tissue, is hypoallergenic so it can be a very useful
alternative for patients who are sensitive to conventional acrylic resins, nickel or
cobalt free. of residual monomer, high flexibility, low solubility, resistant to high
temperatures, resistant to chemicals, has properties resistant to abrasion. This study
aims to determine the effect of soaking time on thermoplastic nylon denture base in
beetroot drink (Beta vulgaris L.) for 4 days, 8 days, and 12 days on color stability. The
design of this research is laboratory experimental. The research sample was a
cylindrical thermoplastic nylon with a size of 20 x 3 mm according to the specifications
of the American Dental Association (ADA) Specification No.12. A total sample of 30 samples was divided into 6 groups, namely the artificial saliva group and beetroot
drink (Beta vulgaris) which were soaked for 4 days, 8 days and 12 days. Color stability
was measured using a colorimeter. The results of calculations and measurements were
analyzed using a one-way ANOVA statistical test. The results showed that there was
an effect of immersion time on thermoplastic nylon denture base in beetroot drink (Beta
vulgaris L.) and artificial saliva on color stability with p = 0.0001 (p <0.05). The
conclusion of this study is that beetroot drink (Beta vulgaris L.) and artificial saliva
have different effects on color stability for 4 days, 8 days, and 12 days and are still
within clinically acceptable values (ΔE < 3, 3), consuming beetroot drink (Beta
vulgaris L.) does not affect the discoloration of the thermoplastic nylon denture base
so that it can still be consumed regularly within 1 year, 2 years and 3 years. | en_US |
