What types of breast implants are available in Houston? January 25, 2023 At Heights Plastic Surgery, we offer both saline and silicone breast implants. Saline breast implants are filled with a saltwater solution and are typically more affordable than their silicone counterpart. These breast implants are available for patients ages 18 and older. Silicone breast implants are typically more popular for their more natural appearance and feel. Silicone implants tend to be a little more expensive and are only available to patients ages 22 and older.