Current gel-filled breast implants correspond to the 5th generation, with improved materials for the content and shell.   The semi-solid gel in these type of implants largely eliminates the possibility of silicone migration. Studies of these devices have shown significant potential improvements in safety and efficacy over the older implants with low rates of capsular contracture and rupture.

Controversy still existed about the safety of older implants until recent years regarding to the risk of breast cancer in these patients.