Retention of cemented implant-supported restorations

Dennis K. Kent, Sreenivas Koka, Mary Lynn Froeschle

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

Purpose: This investigation compared cement failure loads of a gold cylinder luted to a CeraOne titanium abutment (5-mm-high chimney) 24 hours postcementation when either zinc phosphate, Tempbond NE, or Tempbond luting agent was used. Materials and Methods: Luting agent (0.01 mL) was applied to the internal aspect of the gold cylinder, and the cylinder was seated with finger pressure followed by a load of 5 kg for 10 minutes. The specimens were stored in 100% humidity at 37°C for 24 hours before a uniaxial tensile force was applied to the gold cylinder by a mechanical testing instrument. A load-displacement chart was plotted and the cement failure load (CFL) calculated in kilograms. CFLs were determined for each luting agent with the access opening for the CeraOne gold screw on the internal of the abutment either unfilled or filled with autopolymerizing resin. Results: A two-way ANOVA and Tukey's HSD revealed that zinc phosphate resulted in significantly higher (p < .05) mean CFLs than Tempbond or Tempbond NE. In general, filling the access opening did not affect mean CFLs for zinc phosphate and Tempbond NE. However, mean CFLs for gold cylinders cemented with Tempbond and a filled access opening were significantly higher than mean CFLs with an unfilled access opening. However, neither the filled nor the unfilled Tempbond group mean CFL was significantly different from either Tempbond NE mean CFL. Conclusions: Twenty-four hours postcementation, zinc phosphate luting cement significantly enhanced CFLs of a CeraOne gold cylinder luted to a 5-mm CeraOne titanium abutment compared with Tempbond and Tempbond NE. Filling the gold screw access opening of the abutment with autopolymerizing resin only led to higher mean CFLs when Tempbond was used as the luting agent. Filling the access opening had no effect (p > .05) on mean CFLs when Tempbond NE or zinc phosphate was used.

Original languageEnglish (US)
Pages (from-to)193-196
Number of pages4
JournalJournal of Prosthodontics
Volume6
Issue number3
DOIs
StatePublished - Sep 1997

Fingerprint

Dental Cements
Gold
Humidity
Titanium
Fingers
Analysis of Variance
Pressure
zinc phosphate
Tempbond NE

Keywords

  • Dental implants
  • Dislodgement
  • Luting agents

ASJC Scopus subject areas

  • Dentistry(all)

Cite this

Retention of cemented implant-supported restorations. / Kent, Dennis K.; Koka, Sreenivas; Froeschle, Mary Lynn.

In: Journal of Prosthodontics, Vol. 6, No. 3, 09.1997, p. 193-196.

Research output: Contribution to journalArticle

Kent, Dennis K. ; Koka, Sreenivas ; Froeschle, Mary Lynn. / Retention of cemented implant-supported restorations. In: Journal of Prosthodontics. 1997 ; Vol. 6, No. 3. pp. 193-196.
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N2 - Purpose: This investigation compared cement failure loads of a gold cylinder luted to a CeraOne titanium abutment (5-mm-high chimney) 24 hours postcementation when either zinc phosphate, Tempbond NE, or Tempbond luting agent was used. Materials and Methods: Luting agent (0.01 mL) was applied to the internal aspect of the gold cylinder, and the cylinder was seated with finger pressure followed by a load of 5 kg for 10 minutes. The specimens were stored in 100% humidity at 37°C for 24 hours before a uniaxial tensile force was applied to the gold cylinder by a mechanical testing instrument. A load-displacement chart was plotted and the cement failure load (CFL) calculated in kilograms. CFLs were determined for each luting agent with the access opening for the CeraOne gold screw on the internal of the abutment either unfilled or filled with autopolymerizing resin. Results: A two-way ANOVA and Tukey's HSD revealed that zinc phosphate resulted in significantly higher (p < .05) mean CFLs than Tempbond or Tempbond NE. In general, filling the access opening did not affect mean CFLs for zinc phosphate and Tempbond NE. However, mean CFLs for gold cylinders cemented with Tempbond and a filled access opening were significantly higher than mean CFLs with an unfilled access opening. However, neither the filled nor the unfilled Tempbond group mean CFL was significantly different from either Tempbond NE mean CFL. Conclusions: Twenty-four hours postcementation, zinc phosphate luting cement significantly enhanced CFLs of a CeraOne gold cylinder luted to a 5-mm CeraOne titanium abutment compared with Tempbond and Tempbond NE. Filling the gold screw access opening of the abutment with autopolymerizing resin only led to higher mean CFLs when Tempbond was used as the luting agent. Filling the access opening had no effect (p > .05) on mean CFLs when Tempbond NE or zinc phosphate was used.

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