Header

UZH-Logo

Maintenance Infos

Effect of length of LOCATOR abutment and cement type on retention to intraradicular dentin in overdentures


Aleisa, Khalil; Al-Dwairi, Ziad; Abou-Obaid, Alaa; Al-Muharib, Aseel; Al-Rejaye, Najla; Morgano, Steven M; Al-Haj Husain, Nadin; Özcan, Mutlu (2019). Effect of length of LOCATOR abutment and cement type on retention to intraradicular dentin in overdentures. Journal of Prosthetic Dentistry, 122(2):152.e1-152.e6.

Abstract

STATEMENT OF PROBLEM
Limited information is available on the effect of LOCATOR abutment length and luting cement type on retention to intraradicular dentin in overdentures.
PURPOSE
The purpose of this in vitro study was to evaluate the effect of the length of a commercially available LOCATOR abutment and cement type on retention in the root canal.
MATERIAL AND METHODS
Eighty LOCATOR abutments with a standard length of 6 mm were obtained. Half of them were shortened to 3 mm. Eighty recently extracted single-rooted teeth were divided into 2 groups. The post space was prepared to 6 mm in the first group and 3 mm in the second. After preparation, the LOCATOR abutments were luted with one of the following cements: dual-polymerized glass-reinforced resin cement (Parapost Paracore), dual-polymerized resin cement (Variolink II), self-adhesive resin cement (RelyX Unicem), and conventional cement (zinc phosphate). The tensile force required for the removal of the LOCATOR abutments from their corresponding roots was recorded. Data were statistically analyzed with 2-way ANOVA and the Tukey multiple comparison test.
RESULTS
Both the cement type (P<.001) and the length of the LOCATOR abutment (P<.001) significantly affected the mean tensile forces. Dual-polymerized glass-reinforced resin cement (Parapost Paracore) presented significantly higher mean tensile forces for the LOCATOR abutment retention among all cements (P<.05).
CONCLUSIONS
Regardless of the length, LOCATOR abutments luted with Parapost Paracore resin cement presented higher mean resistance to tensile forces compared with those luted with the other cements. LOCATOR abutments of 6 mm in length were more resistant to tensile forces than those of 3 mm in length in combination with all cements.

Abstract

STATEMENT OF PROBLEM
Limited information is available on the effect of LOCATOR abutment length and luting cement type on retention to intraradicular dentin in overdentures.
PURPOSE
The purpose of this in vitro study was to evaluate the effect of the length of a commercially available LOCATOR abutment and cement type on retention in the root canal.
MATERIAL AND METHODS
Eighty LOCATOR abutments with a standard length of 6 mm were obtained. Half of them were shortened to 3 mm. Eighty recently extracted single-rooted teeth were divided into 2 groups. The post space was prepared to 6 mm in the first group and 3 mm in the second. After preparation, the LOCATOR abutments were luted with one of the following cements: dual-polymerized glass-reinforced resin cement (Parapost Paracore), dual-polymerized resin cement (Variolink II), self-adhesive resin cement (RelyX Unicem), and conventional cement (zinc phosphate). The tensile force required for the removal of the LOCATOR abutments from their corresponding roots was recorded. Data were statistically analyzed with 2-way ANOVA and the Tukey multiple comparison test.
RESULTS
Both the cement type (P<.001) and the length of the LOCATOR abutment (P<.001) significantly affected the mean tensile forces. Dual-polymerized glass-reinforced resin cement (Parapost Paracore) presented significantly higher mean tensile forces for the LOCATOR abutment retention among all cements (P<.05).
CONCLUSIONS
Regardless of the length, LOCATOR abutments luted with Parapost Paracore resin cement presented higher mean resistance to tensile forces compared with those luted with the other cements. LOCATOR abutments of 6 mm in length were more resistant to tensile forces than those of 3 mm in length in combination with all cements.

Statistics

Citations

Altmetrics

Downloads

1 download since deposited on 13 Feb 2020
1 download since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Center for Dental Medicine > Clinic of Reconstructive Dentistry
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:August 2019
Deposited On:13 Feb 2020 08:21
Last Modified:13 Feb 2020 08:21
Publisher:Elsevier
ISSN:0022-3913
OA Status:Closed
Publisher DOI:https://doi.org/10.1016/j.prosdent.2019.04.023
PubMed ID:31326148

Download

Closed Access: Download allowed only for UZH members

Content: Accepted Version
Filetype: PDF - Registered users only until 15 August 2020
Size: 308kB
View at publisher
Embargo till: 2020-08-15