Wear Behavior of Graded Glass/Zirconia Crowns and Their Antagonists

M. R. Kaizer, S. Bano, M. Borba, V. Garg, M. B.F. dos Santos, Yu Zhang

Research output: Contribution to journalArticle

Abstract

Monolithic zirconia crowns have become very popular; their surface finish is considered a key factor for restoration longevity. While polishing has shown excellent results in vivo, the surface glass infiltration of zirconia may offer superior damage resistance and aesthetic advantages by using tooth-colored glasses. Thus, the purpose of this study is to evaluate the efficacy of polishing and glass infiltration on the wear behavior of monolithic zirconia crowns. The wear behavior of intact natural molar teeth was investigated as a reference. Zirconia crowns were divided into 3 groups: PolZ—sintered then polished; PolGZ—polished in the presintered state and then glass infiltrated and sintered; NoPolGZ—as machined, glass infiltrated and sintered. Crowns were adhesively bonded to a dentin-like abutment. Zirconia crowns and molar teeth (n = 15) were subjected to contact-slide-liftoff cyclic loading (200 N, 1.25 million cycles) with a steatite sphere (r = 3 mm) as an antagonist in water. Surface and subsurface damages were investigated with optical and scanning electron microscopies. Wear depth and volume loss were determined with micro–computed tomography. PolGZ and NoPolGZ crowns exhibited shallow wear scars, where material loss remained within the glass/zirconia layer with no visible cracks. Meanwhile, PolZ crowns presented no visible wear damage. Volume loss (mm 3 ) in the steatite antagonist was as follows (mean ± SD): PolZ = 0.022 ± 0.007, PolGZ = 0.011 ± 0.004, and NoPolGZ = 0.014 ± 0.006. Molar teeth yielded no measurable wear on the antagonist, while the wear scar on the teeth was greater than that on zirconia crowns, ranging from 0.07 to 0.35 mm 3 . The combination of polishing and glass infiltration on the occlusal surface of monolithic zirconia crowns yielded reduced wear on both crown and antagonist.

Original languageEnglish (US)
Pages (from-to)437-442
Number of pages6
JournalJournal of dental research
Volume98
Issue number4
DOIs
StatePublished - Apr 1 2019

Fingerprint

Crowns
Glass
Tooth
Cicatrix
Tooth Crown
zirconium oxide
X-Ray Microtomography
Dentin
Esthetics
Electron Scanning Microscopy
Water

Keywords

  • ceramics
  • enamel
  • mastication
  • Prosthetic Dentistry
  • restorative materials
  • tooth wear

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Wear Behavior of Graded Glass/Zirconia Crowns and Their Antagonists. / Kaizer, M. R.; Bano, S.; Borba, M.; Garg, V.; dos Santos, M. B.F.; Zhang, Yu.

In: Journal of dental research, Vol. 98, No. 4, 01.04.2019, p. 437-442.

Research output: Contribution to journalArticle

Kaizer, MR, Bano, S, Borba, M, Garg, V, dos Santos, MBF & Zhang, Y 2019, 'Wear Behavior of Graded Glass/Zirconia Crowns and Their Antagonists', Journal of dental research, vol. 98, no. 4, pp. 437-442. https://doi.org/10.1177/0022034518820918
Kaizer, M. R. ; Bano, S. ; Borba, M. ; Garg, V. ; dos Santos, M. B.F. ; Zhang, Yu. / Wear Behavior of Graded Glass/Zirconia Crowns and Their Antagonists. In: Journal of dental research. 2019 ; Vol. 98, No. 4. pp. 437-442.
@article{c138b203cdc5470db757c60f399f8d17,
title = "Wear Behavior of Graded Glass/Zirconia Crowns and Their Antagonists",
abstract = "Monolithic zirconia crowns have become very popular; their surface finish is considered a key factor for restoration longevity. While polishing has shown excellent results in vivo, the surface glass infiltration of zirconia may offer superior damage resistance and aesthetic advantages by using tooth-colored glasses. Thus, the purpose of this study is to evaluate the efficacy of polishing and glass infiltration on the wear behavior of monolithic zirconia crowns. The wear behavior of intact natural molar teeth was investigated as a reference. Zirconia crowns were divided into 3 groups: PolZ—sintered then polished; PolGZ—polished in the presintered state and then glass infiltrated and sintered; NoPolGZ—as machined, glass infiltrated and sintered. Crowns were adhesively bonded to a dentin-like abutment. Zirconia crowns and molar teeth (n = 15) were subjected to contact-slide-liftoff cyclic loading (200 N, 1.25 million cycles) with a steatite sphere (r = 3 mm) as an antagonist in water. Surface and subsurface damages were investigated with optical and scanning electron microscopies. Wear depth and volume loss were determined with micro–computed tomography. PolGZ and NoPolGZ crowns exhibited shallow wear scars, where material loss remained within the glass/zirconia layer with no visible cracks. Meanwhile, PolZ crowns presented no visible wear damage. Volume loss (mm 3 ) in the steatite antagonist was as follows (mean ± SD): PolZ = 0.022 ± 0.007, PolGZ = 0.011 ± 0.004, and NoPolGZ = 0.014 ± 0.006. Molar teeth yielded no measurable wear on the antagonist, while the wear scar on the teeth was greater than that on zirconia crowns, ranging from 0.07 to 0.35 mm 3 . The combination of polishing and glass infiltration on the occlusal surface of monolithic zirconia crowns yielded reduced wear on both crown and antagonist.",
keywords = "ceramics, enamel, mastication, Prosthetic Dentistry, restorative materials, tooth wear",
author = "Kaizer, {M. R.} and S. Bano and M. Borba and V. Garg and {dos Santos}, {M. B.F.} and Yu Zhang",
year = "2019",
month = "4",
day = "1",
doi = "10.1177/0022034518820918",
language = "English (US)",
volume = "98",
pages = "437--442",
journal = "Journal of Dental Research",
issn = "0022-0345",
publisher = "SAGE Publications Inc.",
number = "4",

}

TY - JOUR

T1 - Wear Behavior of Graded Glass/Zirconia Crowns and Their Antagonists

AU - Kaizer, M. R.

AU - Bano, S.

AU - Borba, M.

AU - Garg, V.

AU - dos Santos, M. B.F.

AU - Zhang, Yu

PY - 2019/4/1

Y1 - 2019/4/1

N2 - Monolithic zirconia crowns have become very popular; their surface finish is considered a key factor for restoration longevity. While polishing has shown excellent results in vivo, the surface glass infiltration of zirconia may offer superior damage resistance and aesthetic advantages by using tooth-colored glasses. Thus, the purpose of this study is to evaluate the efficacy of polishing and glass infiltration on the wear behavior of monolithic zirconia crowns. The wear behavior of intact natural molar teeth was investigated as a reference. Zirconia crowns were divided into 3 groups: PolZ—sintered then polished; PolGZ—polished in the presintered state and then glass infiltrated and sintered; NoPolGZ—as machined, glass infiltrated and sintered. Crowns were adhesively bonded to a dentin-like abutment. Zirconia crowns and molar teeth (n = 15) were subjected to contact-slide-liftoff cyclic loading (200 N, 1.25 million cycles) with a steatite sphere (r = 3 mm) as an antagonist in water. Surface and subsurface damages were investigated with optical and scanning electron microscopies. Wear depth and volume loss were determined with micro–computed tomography. PolGZ and NoPolGZ crowns exhibited shallow wear scars, where material loss remained within the glass/zirconia layer with no visible cracks. Meanwhile, PolZ crowns presented no visible wear damage. Volume loss (mm 3 ) in the steatite antagonist was as follows (mean ± SD): PolZ = 0.022 ± 0.007, PolGZ = 0.011 ± 0.004, and NoPolGZ = 0.014 ± 0.006. Molar teeth yielded no measurable wear on the antagonist, while the wear scar on the teeth was greater than that on zirconia crowns, ranging from 0.07 to 0.35 mm 3 . The combination of polishing and glass infiltration on the occlusal surface of monolithic zirconia crowns yielded reduced wear on both crown and antagonist.

AB - Monolithic zirconia crowns have become very popular; their surface finish is considered a key factor for restoration longevity. While polishing has shown excellent results in vivo, the surface glass infiltration of zirconia may offer superior damage resistance and aesthetic advantages by using tooth-colored glasses. Thus, the purpose of this study is to evaluate the efficacy of polishing and glass infiltration on the wear behavior of monolithic zirconia crowns. The wear behavior of intact natural molar teeth was investigated as a reference. Zirconia crowns were divided into 3 groups: PolZ—sintered then polished; PolGZ—polished in the presintered state and then glass infiltrated and sintered; NoPolGZ—as machined, glass infiltrated and sintered. Crowns were adhesively bonded to a dentin-like abutment. Zirconia crowns and molar teeth (n = 15) were subjected to contact-slide-liftoff cyclic loading (200 N, 1.25 million cycles) with a steatite sphere (r = 3 mm) as an antagonist in water. Surface and subsurface damages were investigated with optical and scanning electron microscopies. Wear depth and volume loss were determined with micro–computed tomography. PolGZ and NoPolGZ crowns exhibited shallow wear scars, where material loss remained within the glass/zirconia layer with no visible cracks. Meanwhile, PolZ crowns presented no visible wear damage. Volume loss (mm 3 ) in the steatite antagonist was as follows (mean ± SD): PolZ = 0.022 ± 0.007, PolGZ = 0.011 ± 0.004, and NoPolGZ = 0.014 ± 0.006. Molar teeth yielded no measurable wear on the antagonist, while the wear scar on the teeth was greater than that on zirconia crowns, ranging from 0.07 to 0.35 mm 3 . The combination of polishing and glass infiltration on the occlusal surface of monolithic zirconia crowns yielded reduced wear on both crown and antagonist.

KW - ceramics

KW - enamel

KW - mastication

KW - Prosthetic Dentistry

KW - restorative materials

KW - tooth wear

UR - http://www.scopus.com/inward/record.url?scp=85061908601&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85061908601&partnerID=8YFLogxK

U2 - 10.1177/0022034518820918

DO - 10.1177/0022034518820918

M3 - Article

C2 - 30744472

AN - SCOPUS:85061908601

VL - 98

SP - 437

EP - 442

JO - Journal of Dental Research

JF - Journal of Dental Research

SN - 0022-0345

IS - 4

ER -