TY - JOUR
T1 - Evaluation of UCLA Implant-Abutment Sealing
AU - Ramos, Marcelo B.
AU - Pegoraro, Luiz F.
AU - Takamori, Esther
AU - Coelho, Paulo G.
AU - Silva, Thelma L.
AU - Bonfante, Estevam A.
N1 - Funding Information:
This study was supported by Fapesp Grant 2010/06152-9, and SIN-Sistema de Implante Nacional. The authors would like to acknowledge the skillful work of dental technician Giovani Heckert. The authors reported no conflicts of interest related to this study.
Funding Information:
This study was supported by Fapesp Grant 2010/06152-9, and SIN–Sistema de Implante Nacional. The authors would like to acknowledge the skillful work of dental technician Giovani Heckert.
Publisher Copyright:
© 2014. by Quintessence Publishing Co Inc.
PY - 2014/2/14
Y1 - 2014/2/14
N2 - Purpose: 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. Materials and Methods: 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. Results: 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. Conclusion: Complete leakage was observed for all UCLA abutments regardless of the presence of the CoCr margin. Implant-abutment gaps were observed in all groups. Int J Oral Maxillofac Implants 2014;29:113–120. doi: 10.11607/jomi.3217
AB - Purpose: 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. Materials and Methods: 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. Results: 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. Conclusion: Complete leakage was observed for all UCLA abutments regardless of the presence of the CoCr margin. Implant-abutment gaps were observed in all groups. Int J Oral Maxillofac Implants 2014;29:113–120. doi: 10.11607/jomi.3217
KW - dental implant
KW - gap
KW - implant-abutment connection
KW - in vitro
KW - microleakage, spectrophotometry
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U2 - 10.11607/jomi.3217
DO - 10.11607/jomi.3217
M3 - Article
C2 - 24451861
AN - SCOPUS:84900013446
SN - 0882-2786
VL - 29
SP - 113
EP - 120
JO - International Journal of Oral and Maxillofacial Implants
JF - International Journal of Oral and Maxillofacial Implants
IS - 1
ER -