Evaluation of UCLA implant-abutment sealing.

Marcelo B. Ramos, Luiz F. Pegoraro, Esther Takamori, Paulo Coelho, Thelma L. Silva, Estevam A. Bonfante

Research output: Contribution to journalArticle

Abstract

To evaluate the effect of the presence of a prefabricated cobalt-chromium (CoCr) margin in a universal castable long abutment (UCLA) on the sealing capability and fit of the implant-abutment interface. One-hundred twenty external hexagon implants (SIN) were divided into two groups (n=60 each) to receive UCLA abutments from six manufacturers (n=10 each) either with or without a CoCr margin (n=60 each). Abutments were cast and 12 groups were formed: M (Microplant), I (Impladen), S (SIN), Sv (Signo Vinces), T (TitaniumFix), and B (Bionnovation). Sealing was determined by placing 0.7 μL of 0.1% toluidine blue in the implant wells before abutment torquing. Implant-abutment samples were placed into 2.0-mL vials containing 0.7 mL of distilled water to maintain the implant-abutment interface, and aliquots of 100 μL of water were retrieved at 1, 3, 6, 24, 48, 72, 96, and 144 hour incubation times for measurement of absorbance in a spectrophotometer, and returned for repeated measurements. Two-way ANOVA (P<.05) and Tukey's test were used. Scanning electron microscopy (SEM) was used for observation of the implant-abutment fit. Groups M, Sv, and T without the CoCr margin resulted in complete release of toluidine blue at 1 hour, whereas I, S, and B did so at 3, 24, and 96 hours, respectively. Complete leakage in abutments with the prefabricated margin occurred at 6 hours for S; 24 hours for Sv, T, and B; and 72 hours for M and I. Implant-abutment gaps were observed in all groups. A poorer fit was depicted for groups M and T without the CoCr margin. Complete leakage was observed for all UCLA abutments regardless of the presence of the CoCr margin. Implant-abutment gaps were observed in all groups.

Original languageEnglish (US)
Pages (from-to)113-120
Number of pages8
JournalThe International journal of oral & maxillofacial implants
Volume29
Issue number1
DOIs
StatePublished - 2014

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Chromium
Cobalt
Tolonium Chloride
Water
Electron Scanning Microscopy
Analysis of Variance
Observation

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Ramos, M. B., Pegoraro, L. F., Takamori, E., Coelho, P., Silva, T. L., & Bonfante, E. A. (2014). Evaluation of UCLA implant-abutment sealing. The International journal of oral & maxillofacial implants, 29(1), 113-120. https://doi.org/10.11607/jomi.3217

Evaluation of UCLA implant-abutment sealing. / Ramos, Marcelo B.; Pegoraro, Luiz F.; Takamori, Esther; Coelho, Paulo; Silva, Thelma L.; Bonfante, Estevam A.

In: The International journal of oral & maxillofacial implants, Vol. 29, No. 1, 2014, p. 113-120.

Research output: Contribution to journalArticle

Ramos, MB, Pegoraro, LF, Takamori, E, Coelho, P, Silva, TL & Bonfante, EA 2014, 'Evaluation of UCLA implant-abutment sealing.', The International journal of oral & maxillofacial implants, vol. 29, no. 1, pp. 113-120. https://doi.org/10.11607/jomi.3217
Ramos, Marcelo B. ; Pegoraro, Luiz F. ; Takamori, Esther ; Coelho, Paulo ; Silva, Thelma L. ; Bonfante, Estevam A. / Evaluation of UCLA implant-abutment sealing. In: The International journal of oral & maxillofacial implants. 2014 ; Vol. 29, No. 1. pp. 113-120.
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abstract = "To evaluate the effect of the presence of a prefabricated cobalt-chromium (CoCr) margin in a universal castable long abutment (UCLA) on the sealing capability and fit of the implant-abutment interface. One-hundred twenty external hexagon implants (SIN) were divided into two groups (n=60 each) to receive UCLA abutments from six manufacturers (n=10 each) either with or without a CoCr margin (n=60 each). Abutments were cast and 12 groups were formed: M (Microplant), I (Impladen), S (SIN), Sv (Signo Vinces), T (TitaniumFix), and B (Bionnovation). Sealing was determined by placing 0.7 μL of 0.1{\%} toluidine blue in the implant wells before abutment torquing. Implant-abutment samples were placed into 2.0-mL vials containing 0.7 mL of distilled water to maintain the implant-abutment interface, and aliquots of 100 μL of water were retrieved at 1, 3, 6, 24, 48, 72, 96, and 144 hour incubation times for measurement of absorbance in a spectrophotometer, and returned for repeated measurements. Two-way ANOVA (P<.05) and Tukey's test were used. Scanning electron microscopy (SEM) was used for observation of the implant-abutment fit. Groups M, Sv, and T without the CoCr margin resulted in complete release of toluidine blue at 1 hour, whereas I, S, and B did so at 3, 24, and 96 hours, respectively. Complete leakage in abutments with the prefabricated margin occurred at 6 hours for S; 24 hours for Sv, T, and B; and 72 hours for M and I. Implant-abutment gaps were observed in all groups. A poorer fit was depicted for groups M and T without the CoCr margin. Complete leakage was observed for all UCLA abutments regardless of the presence of the CoCr margin. Implant-abutment gaps were observed in all groups.",
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