Wear of primary teeth caused by opposed all-ceramic or stainless steel crowns.
- Author:
Jae Won CHOI
1
;
Ik Hyun BAE
;
Tae Hwan NOH
;
Sung Won JU
;
Tae Kyoung LEE
;
Jin Soo AHN
;
Tae Sung JEONG
;
Jung Bo HUH
Author Information
- Publication Type:Original Article
- Keywords: Leucite porcelain; Lithium disilicate porcelain; Zirconia; Primary tooth; Wear
- MeSH: Crowns*; Lithium; Mastication; Stainless Steel*; Steel; Tooth; Tooth Wear; Tooth, Deciduous*
- From:The Journal of Advanced Prosthodontics 2016;8(1):43-52
- CountryRepublic of Korea
- Language:English
- Abstract: PURPOSE: This study was conducted to evaluate the effects of full-coverage all-ceramic zirconia, lithium disilicate glass-ceramic, leucite glass-ceramic, or stainless steel crowns on antagonistic primary tooth wear. MATERIALS AND METHODS: There were four study groups: the stainless steel (Steel) group, the leucite glass-ceramic (Leucite) group, the lithium disilicate glass-ceramic (Lithium) group, and the monolithic zirconia (Zirconia) group. Ten flat crown specimens were prepared per group; opposing teeth were prepared using primary canines. A wear test was conducted over 100,000 chewing cycles using a dual-axis chewing simulator and a 50 N masticating force, and wear losses of antagonistic teeth and restorative materials were calculated using a three-dimensional profiling system and an electronic scale, respectively. Statistical significance was determined using One-way ANOVA and Tukey's test (P<.05). RESULTS: The Leucite group (2.670+/-1.471 mm3) showed the greatest amount of antagonist tooth wear, followed by in decreasing order by the Lithium (2.042+/-0.696 mm3), Zirconia (1.426+/-0.477 mm3), and Steel groups (0.397+/-0.192 mm3). Mean volume losses in the Leucite and Lithium groups were significantly greater than in the Steel group (P<.05). No significant difference was observed between mean volume losses in the Zirconia and Steel groups (P>.05). CONCLUSION: Leucite glass-ceramic and lithium disilicate glass-ceramic cause more primary tooth wear than stainless steel or zirconia.
