J Adv Prosthodont.  2017 Jun;9(3):200-207. 10.4047/jap.2017.9.3.200.

Investigations on the effects of mouthrinses on the colour stability and surface roughness of different dental bioceramics

• Soygun K
• Varol O
• Ozer A
• Bolayir G

• KMID: 2382607
• DOI: http://doi.org/10.4047/jap.2017.9.3.200

Abstract

PURPOSE
In this study, three bioceramic materials, [IPS Empress CAD (Ivoclar), IPS e.max CAD (Ivoclar), and Lava Ultimate CAD (3M ESPE)] were treated with three commercial mouthrinses [Listerine, Tantum Verde, and Klorhex]; and changes in colour reflectance and surface roughness values were then quantitatively assessed.
MATERIALS AND METHODS
One hundred and twenty ceramic samples, with dimensions of 2 × 12 × 14 mm, were prepared and divided into nine sample groups, except three control samples. The samples were immersed in the mouthrinse solutions for 120 hrs, and changes in colour reflectance and surface roughness values were measured by UV light spectrophotometry (Vita Easyshade; VITA Zahnfabrik) and by profilometer device (MitutoyoSurftest SJ-301), respectively. The change of surface roughness was inspected by Scanning Electron Microscopy (SEM) and Atomic Force Microscopy (AFM).
RESULTS
There was a positive correlation between the ΔE and increase in the surface roughness. Two of the ceramic materials, IPS Empress and Lava Ultimate, were affected significantly by the treatment of the mouthrinse solutions (P<.05). The most affecting solution was Tantum Verde and the most affected material was Lava Ultimate. As expected, the most resistant material to ΔE and chemical corrosion was IPS e max CAD among the materials used.
CONCLUSION
This work implied that mouthrinse with lower alcohol content had less deteriorating effect on colour and on the surface morphology of the bioceramic materials.

Keyword

Atomic force microscopy; Ceramics; Mouthrinse; Refractometry; Scanning electron microscopy

MeSH Terms

Benzydamine
Ceramics
Corrosion
Microscopy, Atomic Force
Microscopy, Electron, Scanning
Refractometry
Spectrophotometry
Ultraviolet Rays
Benzydamine

Figure

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  Fig. 1 Schematic representation of mouth rinse simulation instrument.

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  Fig. 2 Boxplot of ΔE data.

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  Fig. 3 Boxplot of surface roughness data.

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  Fig. 4 Scanning Electron Microscopy images (original magnifications ×5000) of IPS e.max CAD, IPS empress CAD, and Lava Ultimate CAD, subscript 1, 2, and 3, respectively. Solutions used for the treatment were indicated by lower case letters: (A) Listerine, (B) Klorhex, (C) Tantum Verde, (D) Distiled water.

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  Fig. 5 AFM images of IPS e.max CAD, IPS empress CAD, and Lava Ultimate CAD, subscript 1, 2, and 3, respectively. Solutions used for the treatment were indicated by lower case letters: (A) Listerine, (B) Klorhex, (C) Tantum Verde, (D) Distiled water.

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  Fig. 6 SEM-SE micrographs of (A) IPS empress CAD-Listerine, (C) Lava Ultimate CAD-Klorhex, (E) IPS e.max CAD-Tantum Verde; linear histograms (B), (D), (F) by post processing of SEM images showing hills and valleys for corresponding lines in images.

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