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Updated: Jun 13, 2026
Oral Biofilm Formation on Different Materials for Dental Implants
Published on: June 24, 2018
In vitro microbiological bacterial seal analysis of the implant/abutment connection in morse taper implants: a
Marco Antonio Deconto1, Alexander D'Alvia Salvoni, Thomaz Wassall
1Post Graduation Program in Implant Dentistry, São Leopoldo Mandic Dental School, Campinas, Brazil. madeconto@pop.com.br
Purpose:
The aim of this study was the comparative evaluation between 2 models of morse taper abutments, with regard to their performance in an in vitro bacterial seal analysis.
Materials And Methods:
Twenty-two morse taper implants, Titamax (Neodent, Curitiba, Brazil) CM 3, 75 x 13 mm, 11 CM Universal Post 4.5 x 2 x 2.5 mm, and 11 CM Universal Post Passing Bolt 4.5 x 4 x 2.5 mm were used. The implants were inoculated with 0.3 microL of the 10 concentrated Escherichia coli suspension in their internal screws. The solid posts were closed with 20 N/cm closure torque and the passing bolt posts with 10 N/cm. The assembled specimens were incubated aerobically at 37 degrees C for 7 days, with daily control for cloudiness. The broth in which assembled units showed contamination was diluted at 10 and plated. After incubation, the colonies were counted. Nonparametric Mann-Whitney and Fisher's exact tests were performed.
Results:
The results showed no statistically significant difference between groups P and S with respect to number of colonies. When the total number of positive assembled units in each group was compared, no significant difference was found in either groups.
Conclusions:
We concluded that there was no statistically significant difference between the 2 models of abutment in an in vitro bacterial seal analysis.
