Gastric acid challenge of lithium disilicate-reinforced glass-ceramics and zirconia-reinforced lithium silicate glass-ceramic after polishing and glazing-impact on surface properties

Jenni Hjerppe; Khalil Shahramian; Emil Rosqvist; Lippo V. J. Lassila; Jouko Peltonen; Timo O Närhi

doi:10.1007/s00784-023-05301-x

Gastric acid challenge of lithium disilicate-reinforced glass-ceramics and zirconia-reinforced lithium silicate glass-ceramic after polishing and glazing-impact on surface properties

Jenni Hjerppe, Khalil Shahramian, Emil Rosqvist, Lippo V. J. Lassila, Jouko Peltonen, Timo O Närhi

Laboratory of Molecular Science and Engineering

Research output: Contribution to journal › Article › Scientific › peer-review

1 Citation (Scopus)

13 Downloads (Pure)

Abstract

OBJECTIVES: To investigate the impact of simulated gastric acid on the surface properties of lithium disilicate-reinforced glass-ceramics and zirconia-reinforced lithium silicate glass-ceramic after certain polishing and glazing procedures.

MATERIALS AND METHODS: Four different types of square-shaped specimens (10 × 10 × 2 mm 3, n = 13) were manufactured: lithium disilicate-reinforced glass-ceramic milled and polished (LDS-P); milled, polished, and glazed (LDS-PG); milled, glazed, and no polishing (LDS-G); and milled and polished zirconia-reinforced lithium silicate glass-ceramic (ZR-LS). Specimens were immersed in hydrochloride acid (HCl 0.06 M, pH 1.2) to simulate gastric acid irritation and stored in the acid for 96 h in 37 °C. Specimen weight, surface gloss, Vickers surface microhardness and surface roughness (R a, R q, with optical profilometer), and surface roughness on nanometer level (S q, S al, S q/S al, S dr, S ds with atomic force microscope) were measured before and after the acid immersion.

RESULTS: ZR-LS specimens lost significantly more weight after acid immersion (p = 0.001), also surface microhardness of ZR-LS was significantly reduced (p = 0.001). LDS-G and LDS-PG showed significantly lower surface roughness (S a, S q) values compared to LDS-P before (p ≤ 0.99) and after (p ≤ 0.99) acid immersion and ZR-LS after acid immersion (p ≤ 0.99).

CONCLUSIONS: Gastric acid challenge affects the surface properties of lithium disilicate-reinforced glass-ceramic and zirconia-reinforced lithium silicate glass-ceramic. Glazing layer provides lower surface roughness, and the glazed surface tends to smoothen after the gastric acid challenge.

CLINICAL RELEVANCE: Surface finish of lithium disilicate-reinforced glass-ceramic and zirconia-reinforced lithium silicate glass-ceramic has a clear impact on material's surface properties. Gastric acidic challenge changes surface properties but glazing seems to function as a protective barrier. Nevertheless, also glazing tends to smoothen after heavy gastric acid challenge. Glazing can be highly recommended to all glass-ceramic restorations but especially in patients with gastroesophageal reflux disease (GERD) and eating disorders like bulimia nervosa.

Original language	English
Pages (from-to)	6865-6877
Number of pages	13
Journal	Clinical Oral Investigations
Volume	27
Issue number	11
DOIs	https://doi.org/10.1007/s00784-023-05301-x
Publication status	Published - Nov 2023
MoE publication type	A1 Journal article-refereed

Keywords

Humans
Lithium
Gastric Acid
Materials Testing
Computer-Aided Design
Dental Porcelain/chemistry
Ceramics/chemistry
Zirconium/chemistry
Silicates
Surface Properties

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10.1007/s00784-023-05301-xLicence: CC BY

s00784-023-05301-xFinal published version, 2.17 MBLicence: CC BY

https://urn.fi/URN:NBN:fi-fe20231130150383

Åbo Akademi Functional Printing Center
Martti Toivakka (PI), Jessica Rosenholm (PI), Nicklas Anttu (PI), Johan Bobacka (PI), Tan Phat Huynh (PI), Jouko Peltonen (PI), Xiaoju Wang (PI), Carl-Eric Wilen (PI), Chunlin Xu (PI), Hongbo Zhang (PI) & Ronald Österbacka (PI)
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Hjerppe, J., Shahramian, K., Rosqvist, E., Lassila, L. V. J., Peltonen, J., & Närhi, T. O. (2023). Gastric acid challenge of lithium disilicate-reinforced glass-ceramics and zirconia-reinforced lithium silicate glass-ceramic after polishing and glazing-impact on surface properties. Clinical Oral Investigations, 27(11), 6865-6877. https://doi.org/10.1007/s00784-023-05301-x

@article{c1c0ce6ee4b3478ca5144d96de8d6b43,

title = "Gastric acid challenge of lithium disilicate-reinforced glass-ceramics and zirconia-reinforced lithium silicate glass-ceramic after polishing and glazing-impact on surface properties",

abstract = "OBJECTIVES: To investigate the impact of simulated gastric acid on the surface properties of lithium disilicate-reinforced glass-ceramics and zirconia-reinforced lithium silicate glass-ceramic after certain polishing and glazing procedures.MATERIALS AND METHODS: Four different types of square-shaped specimens (10 × 10 × 2 mm 3, n = 13) were manufactured: lithium disilicate-reinforced glass-ceramic milled and polished (LDS-P); milled, polished, and glazed (LDS-PG); milled, glazed, and no polishing (LDS-G); and milled and polished zirconia-reinforced lithium silicate glass-ceramic (ZR-LS). Specimens were immersed in hydrochloride acid (HCl 0.06 M, pH 1.2) to simulate gastric acid irritation and stored in the acid for 96 h in 37 °C. Specimen weight, surface gloss, Vickers surface microhardness and surface roughness (R a, R q, with optical profilometer), and surface roughness on nanometer level (S q, S al, S q/S al, S dr, S ds with atomic force microscope) were measured before and after the acid immersion. RESULTS: ZR-LS specimens lost significantly more weight after acid immersion (p = 0.001), also surface microhardness of ZR-LS was significantly reduced (p = 0.001). LDS-G and LDS-PG showed significantly lower surface roughness (S a, S q) values compared to LDS-P before (p ≤ 0.99) and after (p ≤ 0.99) acid immersion and ZR-LS after acid immersion (p ≤ 0.99). CONCLUSIONS: Gastric acid challenge affects the surface properties of lithium disilicate-reinforced glass-ceramic and zirconia-reinforced lithium silicate glass-ceramic. Glazing layer provides lower surface roughness, and the glazed surface tends to smoothen after the gastric acid challenge.CLINICAL RELEVANCE: Surface finish of lithium disilicate-reinforced glass-ceramic and zirconia-reinforced lithium silicate glass-ceramic has a clear impact on material's surface properties. Gastric acidic challenge changes surface properties but glazing seems to function as a protective barrier. Nevertheless, also glazing tends to smoothen after heavy gastric acid challenge. Glazing can be highly recommended to all glass-ceramic restorations but especially in patients with gastroesophageal reflux disease (GERD) and eating disorders like bulimia nervosa.",

keywords = "Humans, Lithium, Gastric Acid, Materials Testing, Computer-Aided Design, Dental Porcelain/chemistry, Ceramics/chemistry, Zirconium/chemistry, Silicates, Surface Properties",

author = "Jenni Hjerppe and Khalil Shahramian and Emil Rosqvist and Lassila, {Lippo V. J.} and Jouko Peltonen and N{\"a}rhi, {Timo O}",

note = "{\textcopyright} 2023. The Author(s).",

year = "2023",

month = nov,

doi = "10.1007/s00784-023-05301-x",

language = "English",

volume = "27",

pages = "6865--6877",

journal = "Clinical Oral Investigations",

issn = "1432-6981",

publisher = "Springer",

number = "11",

}

Hjerppe, J, Shahramian, K, Rosqvist, E, Lassila, LVJ, Peltonen, J & Närhi, TO 2023, 'Gastric acid challenge of lithium disilicate-reinforced glass-ceramics and zirconia-reinforced lithium silicate glass-ceramic after polishing and glazing-impact on surface properties', Clinical Oral Investigations, vol. 27, no. 11, pp. 6865-6877. https://doi.org/10.1007/s00784-023-05301-x

Gastric acid challenge of lithium disilicate-reinforced glass-ceramics and zirconia-reinforced lithium silicate glass-ceramic after polishing and glazing-impact on surface properties. / Hjerppe, Jenni; Shahramian, Khalil; Rosqvist, Emil et al.
In: Clinical Oral Investigations, Vol. 27, No. 11, 11.2023, p. 6865-6877.

Research output: Contribution to journal › Article › Scientific › peer-review

TY - JOUR

T1 - Gastric acid challenge of lithium disilicate-reinforced glass-ceramics and zirconia-reinforced lithium silicate glass-ceramic after polishing and glazing-impact on surface properties

AU - Hjerppe, Jenni

AU - Shahramian, Khalil

AU - Rosqvist, Emil

AU - Lassila, Lippo V. J.

AU - Peltonen, Jouko

AU - Närhi, Timo O

PY - 2023/11

Y1 - 2023/11

N2 - OBJECTIVES: To investigate the impact of simulated gastric acid on the surface properties of lithium disilicate-reinforced glass-ceramics and zirconia-reinforced lithium silicate glass-ceramic after certain polishing and glazing procedures.MATERIALS AND METHODS: Four different types of square-shaped specimens (10 × 10 × 2 mm 3, n = 13) were manufactured: lithium disilicate-reinforced glass-ceramic milled and polished (LDS-P); milled, polished, and glazed (LDS-PG); milled, glazed, and no polishing (LDS-G); and milled and polished zirconia-reinforced lithium silicate glass-ceramic (ZR-LS). Specimens were immersed in hydrochloride acid (HCl 0.06 M, pH 1.2) to simulate gastric acid irritation and stored in the acid for 96 h in 37 °C. Specimen weight, surface gloss, Vickers surface microhardness and surface roughness (R a, R q, with optical profilometer), and surface roughness on nanometer level (S q, S al, S q/S al, S dr, S ds with atomic force microscope) were measured before and after the acid immersion. RESULTS: ZR-LS specimens lost significantly more weight after acid immersion (p = 0.001), also surface microhardness of ZR-LS was significantly reduced (p = 0.001). LDS-G and LDS-PG showed significantly lower surface roughness (S a, S q) values compared to LDS-P before (p ≤ 0.99) and after (p ≤ 0.99) acid immersion and ZR-LS after acid immersion (p ≤ 0.99). CONCLUSIONS: Gastric acid challenge affects the surface properties of lithium disilicate-reinforced glass-ceramic and zirconia-reinforced lithium silicate glass-ceramic. Glazing layer provides lower surface roughness, and the glazed surface tends to smoothen after the gastric acid challenge.CLINICAL RELEVANCE: Surface finish of lithium disilicate-reinforced glass-ceramic and zirconia-reinforced lithium silicate glass-ceramic has a clear impact on material's surface properties. Gastric acidic challenge changes surface properties but glazing seems to function as a protective barrier. Nevertheless, also glazing tends to smoothen after heavy gastric acid challenge. Glazing can be highly recommended to all glass-ceramic restorations but especially in patients with gastroesophageal reflux disease (GERD) and eating disorders like bulimia nervosa.

AB - OBJECTIVES: To investigate the impact of simulated gastric acid on the surface properties of lithium disilicate-reinforced glass-ceramics and zirconia-reinforced lithium silicate glass-ceramic after certain polishing and glazing procedures.MATERIALS AND METHODS: Four different types of square-shaped specimens (10 × 10 × 2 mm 3, n = 13) were manufactured: lithium disilicate-reinforced glass-ceramic milled and polished (LDS-P); milled, polished, and glazed (LDS-PG); milled, glazed, and no polishing (LDS-G); and milled and polished zirconia-reinforced lithium silicate glass-ceramic (ZR-LS). Specimens were immersed in hydrochloride acid (HCl 0.06 M, pH 1.2) to simulate gastric acid irritation and stored in the acid for 96 h in 37 °C. Specimen weight, surface gloss, Vickers surface microhardness and surface roughness (R a, R q, with optical profilometer), and surface roughness on nanometer level (S q, S al, S q/S al, S dr, S ds with atomic force microscope) were measured before and after the acid immersion. RESULTS: ZR-LS specimens lost significantly more weight after acid immersion (p = 0.001), also surface microhardness of ZR-LS was significantly reduced (p = 0.001). LDS-G and LDS-PG showed significantly lower surface roughness (S a, S q) values compared to LDS-P before (p ≤ 0.99) and after (p ≤ 0.99) acid immersion and ZR-LS after acid immersion (p ≤ 0.99). CONCLUSIONS: Gastric acid challenge affects the surface properties of lithium disilicate-reinforced glass-ceramic and zirconia-reinforced lithium silicate glass-ceramic. Glazing layer provides lower surface roughness, and the glazed surface tends to smoothen after the gastric acid challenge.CLINICAL RELEVANCE: Surface finish of lithium disilicate-reinforced glass-ceramic and zirconia-reinforced lithium silicate glass-ceramic has a clear impact on material's surface properties. Gastric acidic challenge changes surface properties but glazing seems to function as a protective barrier. Nevertheless, also glazing tends to smoothen after heavy gastric acid challenge. Glazing can be highly recommended to all glass-ceramic restorations but especially in patients with gastroesophageal reflux disease (GERD) and eating disorders like bulimia nervosa.

KW - Humans

KW - Lithium

KW - Gastric Acid

KW - Materials Testing

KW - Computer-Aided Design

KW - Dental Porcelain/chemistry

KW - Ceramics/chemistry

KW - Zirconium/chemistry

KW - Silicates

KW - Surface Properties

U2 - 10.1007/s00784-023-05301-x

DO - 10.1007/s00784-023-05301-x

M3 - Article

C2 - 37821653

SN - 1432-6981

VL - 27

SP - 6865

EP - 6877

JO - Clinical Oral Investigations

JF - Clinical Oral Investigations

IS - 11

ER -

Gastric acid challenge of lithium disilicate-reinforced glass-ceramics and zirconia-reinforced lithium silicate glass-ceramic after polishing and glazing-impact on surface properties

Abstract

Keywords

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