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The results of the study showed that the funnel method showed a 27-fold decrease in skin contact for the insertion of all smooth gel implants compared to the digital technique. However, the amount of skin contact and potential contamination increased incrementally with an increase in the volume of the breast implant, whether the digital or funnel techniques were used. Bacterial contamination was shown to be two times more likely with the standard digital insertion technique than with the funnel. The study authors, therefore, concluded that the use of the Keller funnel appears to significantly reduce the amount of skin contact and thus potential bacterial contamination of the implant site.