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. 2022 Nov;13(Suppl 1):S198-S201.
doi: 10.4103/japtr.japtr_274_22. Epub 2022 Nov 30.

Effect of brushing simulation on the surface roughness of soft-tissue liners: An in vitro study

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Effect of brushing simulation on the surface roughness of soft-tissue liners: An in vitro study

Sneha Kannan et al. J Adv Pharm Technol Res. 2022 Nov.

Abstract

Soft denture liners evenly distribute functional loads over denture-bearing tissues. The liners aid in more evenly distributing the pressures of mastication to the underlying tissues by absorbing some of the masticatory forces. The study aimed to evaluate the brushing simulation influence on the surface roughness property of soft-tissue liners. A total of eight samples of Avue brand soft-tissue liners with the composition of varnish base and varnish catalyst were suspended into a standard template extracted and numbered sequentially and surface roughness was calculated using a stylus profilometer. A total of 30,000 cycles brushing were done, where the first group samples were brushed with Colgate toothpaste and the second group brushed with Dabur Red toothpaste using a toothbrush simulator (ZM3.8 SD Mechatronik). The data of both pre- and postbrushing values were recorded manually and statistically uploaded on SPSS software version 22 and values were represented in clustered bar graph forms. The significance value of Ra was 0.321. The significance value of Rq was 0.211. The significance value of Rz was 0.354, hence statistically, insignificant. In the present study, the surface roughness of soft-tissue liners is reduced to a minimal extent after brushing simulation.

Keywords: Brushing simulation; innovative measurement; profilometer; soft liners; surface roughness; toothpaste.

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Conflict of interest statement

There are no conflicts of interest.

Figures

Figure 1
Figure 1
Representation of stylus profilometer to measure the surface roughness of soft-tissue liners
Figure 2
Figure 2
Representation of brushing of soft-tissue liners in brushing simulator
Figure 3
Figure 3
The bar graph above shows the surface roughness values of soft liner material before and after brushing simulation. Blue color represents the mean difference of Ra, Rq, Rz of colgate toothpaste and orange color denotes the mean difference of Ra, Rq, Rz of dabur toothpaste. This graph infers that the surface roughness of soft tissue liners is slightly reduced after brushing simulation

References

    1. Shankargouda SB. To evaluate different soft tissue liners, as functional impression materials, by determining its effect on surface roughness of dental stone over a time period: An in-vitro study. Mod App Dent Oral Health. 2018;3:247–55.
    1. De Foggi CC, Ayres MS, Feltrin GP, Jorge JH, Machado AL. Effect of surface characteristics of soft liners and tissue conditioners and saliva on the adhesion and biofilm formation. Am J Dent. 2018;31:45–52. - PubMed
    1. Wright PS. The success and failure of denture soft-lining materials in clinical use. J Dent. 1984;12:319–27. - PubMed
    1. Khan Z, Martin J, Collard S. Adhesion characteristics of visible light-cured denture base material bonded to resilient lining materials. J Prosthet Dent. 1989;62:196–200. - PubMed
    1. Polyzois GL. Adhesion properties of resilient lining materials bonded to light-cured denture resins. J Prosthet Dent. 1992;68:854–8. - PubMed