Mentor Memory Gel Silicone Implants Vs Sientra HIGHLY Cohesive Form-stable Gummy Bear Implants?

All manufacturers have two gels and have both round and teardrop implants.The gel in mentor rounds is called "memory gel" and the gel in mentor teardrop implants is called "memory shape."The gel in all Allergan round implants is the same and the gel in their teardrop implants (the 410) is more cohesive.  Allergan makes an implant called the Inspira that uses the same gel as the regular implants but more gel is put into any given shell so it ripples less (though outside of the US they make this implant with a more cohesive gel.)Sienta uses two types of gel: the HSC and HSC+.  It stands for High Strength Cohesive.  The use HSC in round implants, and they have a line of implants (the 105) with a standard degree of fill and a second line with the same gel but a higher degree of file (the 106.)  Unlike the other two, they use the more cohesive HSC+ in a more filled round implants called the 107, and this was released just several weeks ago.I have used every one of these implants and the differences are subtle but real.  The most cohesive is the 410 followed by MemoryShape, HSC+, HSC, standard Allergan gel, and then standard Mentor Memory Gel.The less cohesive implants are softest and the more cohesive implants better maintain their shape and tend to ripple less.  The more filled 107 and Inspira also have less of a tendency to ripple than their less filled counterparts.  It is a question of dimensions, trade-offs, and a patient's own breasts and desires.

Both Mentor's MemoryShape™
implant and Sientra's breast implants are form stable, meaning they are firmer
and anatomically-shaped for the most natural looking results. Either implant
type can create beautiful results, but many surgeons and patients prefer
Sientra implants due to a few advantages they offer. For one, Sientra implants
come with a 2-year warranty providing free implant replacement to any patient
who develops a grade 3 or 4 capsular contracture during the first 2 years
following breast augmentation. Secondly, with five different
anatomically-shaped implants to choose from, Sientra offers a wider variety of
form stable implant options than either Mentor or Natrelle. Finally, Sientra
implants have a lower documented rupture rate than competitors and are only
available to board certified plastic surgeons, making them the new gold
standard for form stable implants. As always, it's best to discuss your implant
options with your breast augmentation surgeon

Great question!  In the United States there are three silicone implants that
are currently FDA approved which include Sientra, Mentor and Allergan. In all of
these implants, the silicone gel is what is called cohesion as opposed to the
liquid gel, which is consistent with implants produced in earlier decades.
However, although all current gel is cohesive to some degree, the level of
cohesiveness varies between companies and mostly between implants. In general,
Allergan and Mentor have what is considered 4th generation silicone gel in
their smooth round implants, whereas Sientra’s smooth round implants now have 5th
generation gel and they just recently added a new variation of their implants
which has the same level of form gel as their anatomical implants. Generally,
smooth round implants are going to have a somewhat softer gel than anatomical
implants as anatomical implants each maintain their shape and therefore have a more form stable gel. The
gel does not need to be extremely stiff to be effective and once again, I feel
Sientra hit the mark with a more stable yet soft gel. Mentor and Sientra’s gel
likely have a somewhat firmer feel although they are also high quality
implants. A discussion of which implant would be best for you is
best held with your plastic surgeon. An experienced plastic surgeon should be
able to offer you smooth round, textured round or textured anatomical implants
depending on your goals and anatomy.