Influence of varying cement types and abutment heights on pull-off force of zirconia restorations
10.14368/jdras.2024.40.2.64
- Author:
Yeong-Jun JUNG
1
;
Yu-Lee KIM
;
Ji-Hye JUNG
;
Nae-Un KANG
;
Hyun-Jun KONG
Author Information
1. Department of Prosthodontics, College of Dentistry, Wonkwang University, Iksan, Republic of Korea
- Publication Type:Original Article
- From:Journal of Dental Rehabilitation and Applied Science
2024;40(2):64-71
- CountryRepublic of Korea
- Language:English
-
Abstract:
Purpose:The purpose of this study is to evaluate Ti-base abutment’s three different heights and three different cement types on the pull-off force of zirconia-based restorations.
Materials and Methods:A total of 90 fixture lab analogs were embedded in auto polymerizing resin bloack. 90 Ti-base abutments heights of 3 mm, 5 mm, 7 mm were scanned and zirconia restoration were prepared from scanned files. Zirconia restoration were cemented with three different types of cements (temporary, semi-permanent, permanent) following manufacturer’s instructions. All 90 specimens were placed and tested in a universal testingmachine for pull-out testing. Retention was measured by recording the force at load drop. Statistical analysis was performedusing Kruskal-Wallis test for detecting whether there are any statistical significance along cement types or abutment heights.After that, Mann-Whitney test was used for figuring out differences regarding abutment height and the comparison between 3cements.
Results:Temp bond showed significantly lower pull-off force compared to Fujicem regardless of any abutment height.However, there were significant differences between Cem-implant and Fujicem in abutment height of 3 mm and 7 mm, but there was no significant difference in 5 mm. Temp bond and Cem-implant had significant differences only in abutment height of 5 mm.
Conclusion:Although Ti-base abutment height did not influenced zirconia restorations’ retentiveness, cement types showed significant differences.
