Effect of luting cement and thermomechanical loading on retention of glass fibre posts in root canals

Xiao Jing Li, San Jun Zhao, Li Na Niu, Franklin Chi Meng Tay, Kai Jiao, Yu Gao, Ji Hua Chen

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Objectives To evaluate the effect of luting cement and thermomechanical loading on the retention of glass fibre posts in root canals. Methods One hundred and forty-four single-rooted human premolars were endodontically treated and restored with RelyX Fibre Posts. The teeth were divided into four groups according to the cements used (Fuji I, Fuji CEM, RelyX Unicem and RelyX ARC). Each group was further divided into two subgroups according to the method of ageing (immediately tested and after thermomechanical loading). Bond strength was evaluated using a pull-out test. Microleakage was examined quantitatively with dye penetration. The dentine-cement-post bonding interface was assessed using scanning electron microscopy. Data were analysed with two-way ANOVA (pull-out test) and Kruskal-Wallis analysis (microleakage). Results The pull-out bond strength and microleakage were significantly affected by the type of cement and ageing. Although RelyX ARC showed the highest bond strength before thermomechanical loading (p < 0.05), the sealing ability of this cement was worse than those exhibited in Fuji CEM and RelyX Unicem (p < 0.05). After thermomechanical loading, pull-out strengths of Fuji I and Fuji CEM were significantly increased, whereas that of RelyX ARC group significantly decreased (p < 0.05). The sealing ability of Fuji CEM was significantly better than the two resin cement groups (p < 0.05) after ageing. Conclusion Fuji CEM demonstrates increased pull-out strength after thermomechanical loading and favourable sealing ability compared with the other cements. Clinical significance Resin-modified glass ionomer cements have the potential benefit of achieving long-term retention when used for luting glass fibre post to root canal dentine. So it may be recommended for the cementation of glass fibre post in clinics.

Original languageEnglish (US)
Pages (from-to)75-83
Number of pages9
JournalJournal of Dentistry
Volume42
Issue number1
DOIs
StatePublished - Jan 1 2014

Fingerprint

Dental Pulp Cavity
Dentin
Cementation
Resin Cements
Glass Ionomer Cements
Bicuspid
Electron Scanning Microscopy
Analysis of Variance
Tooth
Coloring Agents
fiberglass
RelyX ARC
Rely X Unicem
Fuji glass-ionomer lining cement

Keywords

  • Fibre post
  • Luting cement
  • Microleakage
  • Pull-out test
  • Root canal dentine
  • Thermomechanical loading

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Effect of luting cement and thermomechanical loading on retention of glass fibre posts in root canals. / Li, Xiao Jing; Zhao, San Jun; Niu, Li Na; Tay, Franklin Chi Meng; Jiao, Kai; Gao, Yu; Chen, Ji Hua.

In: Journal of Dentistry, Vol. 42, No. 1, 01.01.2014, p. 75-83.

Research output: Contribution to journalArticle

Li, Xiao Jing ; Zhao, San Jun ; Niu, Li Na ; Tay, Franklin Chi Meng ; Jiao, Kai ; Gao, Yu ; Chen, Ji Hua. / Effect of luting cement and thermomechanical loading on retention of glass fibre posts in root canals. In: Journal of Dentistry. 2014 ; Vol. 42, No. 1. pp. 75-83.
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abstract = "Objectives To evaluate the effect of luting cement and thermomechanical loading on the retention of glass fibre posts in root canals. Methods One hundred and forty-four single-rooted human premolars were endodontically treated and restored with RelyX Fibre Posts. The teeth were divided into four groups according to the cements used (Fuji I, Fuji CEM, RelyX Unicem and RelyX ARC). Each group was further divided into two subgroups according to the method of ageing (immediately tested and after thermomechanical loading). Bond strength was evaluated using a pull-out test. Microleakage was examined quantitatively with dye penetration. The dentine-cement-post bonding interface was assessed using scanning electron microscopy. Data were analysed with two-way ANOVA (pull-out test) and Kruskal-Wallis analysis (microleakage). Results The pull-out bond strength and microleakage were significantly affected by the type of cement and ageing. Although RelyX ARC showed the highest bond strength before thermomechanical loading (p < 0.05), the sealing ability of this cement was worse than those exhibited in Fuji CEM and RelyX Unicem (p < 0.05). After thermomechanical loading, pull-out strengths of Fuji I and Fuji CEM were significantly increased, whereas that of RelyX ARC group significantly decreased (p < 0.05). The sealing ability of Fuji CEM was significantly better than the two resin cement groups (p < 0.05) after ageing. Conclusion Fuji CEM demonstrates increased pull-out strength after thermomechanical loading and favourable sealing ability compared with the other cements. Clinical significance Resin-modified glass ionomer cements have the potential benefit of achieving long-term retention when used for luting glass fibre post to root canal dentine. So it may be recommended for the cementation of glass fibre post in clinics.",
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T1 - Effect of luting cement and thermomechanical loading on retention of glass fibre posts in root canals

AU - Li, Xiao Jing

AU - Zhao, San Jun

AU - Niu, Li Na

AU - Tay, Franklin Chi Meng

AU - Jiao, Kai

AU - Gao, Yu

AU - Chen, Ji Hua

PY - 2014/1/1

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N2 - Objectives To evaluate the effect of luting cement and thermomechanical loading on the retention of glass fibre posts in root canals. Methods One hundred and forty-four single-rooted human premolars were endodontically treated and restored with RelyX Fibre Posts. The teeth were divided into four groups according to the cements used (Fuji I, Fuji CEM, RelyX Unicem and RelyX ARC). Each group was further divided into two subgroups according to the method of ageing (immediately tested and after thermomechanical loading). Bond strength was evaluated using a pull-out test. Microleakage was examined quantitatively with dye penetration. The dentine-cement-post bonding interface was assessed using scanning electron microscopy. Data were analysed with two-way ANOVA (pull-out test) and Kruskal-Wallis analysis (microleakage). Results The pull-out bond strength and microleakage were significantly affected by the type of cement and ageing. Although RelyX ARC showed the highest bond strength before thermomechanical loading (p < 0.05), the sealing ability of this cement was worse than those exhibited in Fuji CEM and RelyX Unicem (p < 0.05). After thermomechanical loading, pull-out strengths of Fuji I and Fuji CEM were significantly increased, whereas that of RelyX ARC group significantly decreased (p < 0.05). The sealing ability of Fuji CEM was significantly better than the two resin cement groups (p < 0.05) after ageing. Conclusion Fuji CEM demonstrates increased pull-out strength after thermomechanical loading and favourable sealing ability compared with the other cements. Clinical significance Resin-modified glass ionomer cements have the potential benefit of achieving long-term retention when used for luting glass fibre post to root canal dentine. So it may be recommended for the cementation of glass fibre post in clinics.

AB - Objectives To evaluate the effect of luting cement and thermomechanical loading on the retention of glass fibre posts in root canals. Methods One hundred and forty-four single-rooted human premolars were endodontically treated and restored with RelyX Fibre Posts. The teeth were divided into four groups according to the cements used (Fuji I, Fuji CEM, RelyX Unicem and RelyX ARC). Each group was further divided into two subgroups according to the method of ageing (immediately tested and after thermomechanical loading). Bond strength was evaluated using a pull-out test. Microleakage was examined quantitatively with dye penetration. The dentine-cement-post bonding interface was assessed using scanning electron microscopy. Data were analysed with two-way ANOVA (pull-out test) and Kruskal-Wallis analysis (microleakage). Results The pull-out bond strength and microleakage were significantly affected by the type of cement and ageing. Although RelyX ARC showed the highest bond strength before thermomechanical loading (p < 0.05), the sealing ability of this cement was worse than those exhibited in Fuji CEM and RelyX Unicem (p < 0.05). After thermomechanical loading, pull-out strengths of Fuji I and Fuji CEM were significantly increased, whereas that of RelyX ARC group significantly decreased (p < 0.05). The sealing ability of Fuji CEM was significantly better than the two resin cement groups (p < 0.05) after ageing. Conclusion Fuji CEM demonstrates increased pull-out strength after thermomechanical loading and favourable sealing ability compared with the other cements. Clinical significance Resin-modified glass ionomer cements have the potential benefit of achieving long-term retention when used for luting glass fibre post to root canal dentine. So it may be recommended for the cementation of glass fibre post in clinics.

KW - Fibre post

KW - Luting cement

KW - Microleakage

KW - Pull-out test

KW - Root canal dentine

KW - Thermomechanical loading

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