Would malar implants bring my cheekbones forward at all in a profile view or just make them wider?

You are absolutely correct!  You do not want an implant that will give you a wider face.  Women are more beautiful and feminine with a soft, round fullness to the center and front of your cheek area.  You need to see someone with a lot of experience with cheek implants, discuss your concerns and be sure your doctor agrees with you.  

It is
most important when planning changes to the cheek bone support to first be clear about the precise objective.
Cheeks project to the side (seen from the front), as well as forward under the
eyes (seen from the side), and the most defining characteristics of the cheeks
are the shape in the oblique direction (seen in the three quarter view) and the
height. Attractive female cheeks are high and oval, while males look better
with more angular cheeks.

People
with flat cheeks lack a healthy, robust appearance. In addition, flat cheeks
are not a good foundation to support the soft tissues of the mid cheek, which,
as a result tend to sag prematurely. Eyelid bags appear prematurely in flat
cheek people, as seen in young Asian faces.

The
quality of result obtained with cheek augmentation is in direct proportion to the experience of
the surgeon with this operation and his ‘aesthetic eye’. While computer
simulation preoperative planning can be used, in practice it is much more
useful for the patient and surgeon to do a ‘fluid test’. This is effectively a
dress rehearsal done in the office with you sitting down holding a mirror,
while the surgeon gently injects dilute local anaethetic fluid into the correct
places and with the correct amounts to simulate the effect of the implant, all
along with your guidance and approval.

The fluid
lasts only a few hours, and as it isn’t permanent you can try out a larger size.
If you don’t like the look you are not stuck with it. During this trial process
the surgeon notes the volumes used in different parts of the cheek and the shape
required for the surgery.

There are
several types of implant material premade in the factory, of different shapes.
Personally, I prefer individual implants that are made of coral granules as
there is no reaction or infection risk with this material. The shape and size
of the implant is made by the surgeon according to the fluid test plan. The
coral, chosen because it is structurally identical to facial bone. It becomes
fixed in place with fibrous tissue initially and progressively the cheek bone
grows into the implant so that the coral implant becomes part of the person and
avoids the long term potential for problems that may be seen with silicone
implants.

Depending
on your age, a cheek lift may be required at the same time if the cheek has
already dropped. Cheek implants themselves do not lift the cheek and it does
not look attractive having a sagging cheek hanging off a prominent cheekbone.