Success with dermal fillers means a deep understanding of the characteristics, interactions and what can go wrong with your injections, by your cosmetic dermatologist.
Injectable dermal fillers come in a variety of forms. Different dermal fillers behave differently inside tissue – some are stiff which is great for use in accentuating cheekbones, while others are very soft, great for filling in fine lines and areas around the mouth and eyes.
Dermal fillers are one of the fastest growing areas at our Melbourne clinic.
What is crosslinking and why does it matter in dermal fillers?
Crosslinking is used in almost all dermal fillers using a chemical that joins the substance together. Crosslinking means that the molecules are attached to each other – crosslinked. This changes the way they behave when they are injected because they are effectively attached to one another, instead of just roaming loosely inside your tissue. This means the molecules stay put for longer.
Biphasic dermal fillers
Some dermal fillers go through a special sieving technology, resulting in the dermal filler being called a biphasic filler. In biphasic dermal fillers, the tissue conforms around the dermal filler, which is well-suited to adding structure to the face and lifting tissue.
Monophonic dermal fillers
A monophonic dermal filler has various levels of tissue integration, with differing degrees of facial flexibility and allowance of the natural movement of facial expressions.
Comparisons of dermal fillers and clinical trials
There are over a dozen dermal fillers on the market, however direct comparisons are not always easy to make, since the clinical trials performed on each differ in some key ways. Outcomes measured and the way the dermal fillers work are different, so each must be evaluated on its own merits and used for specific purposes. One dermal filler does not fit all purposes.
Dermal fillersin the United States are classified as medical devices, with neurotoxins (anti-wrinkle muscle and nerve relaxant injections) considered drugs, however in Australia, dermal fillers are considered prescription-only substances, like a drug. This only matters in clinical trial terms in the United States where the products are developed, because a medical device only requires a one-point improvement on the four-point scale, while drugs require a two-point improvement. The scales may vary between companies. The scales measure effectiveness of the treatment.
Elements your cosmetic dermatologist evaluates when choosing a filler for your face
The amount of dermal filler used in clinical trials varies, sometimes considerably, to what you would use in clinic. Use of these substances in clinical practice by your cosmetic dermatologist requires a thorough understanding of what substance they are using and for what specific purpose.
An important element of a product is the G prime – stiffness – which varies incredibly among products depending entirely on elements such as temperature, pressure and testing equipment used. How much a dermal filler sticks to itself (cohesivity) is also important – fillers that stick to themselves tend to spread through tissue better (counterintuitively), meaning that those that don’t stick to themselves very well should be useful for small, dedicated areas.
How much water the dermal filler absorbs also matters – use of very absorbent dermal filler under the eyes to fill in under-eye bags, for example, is counterproductive, since the filler will absorb water and create more of a problem than it solves.
We are expert cosmetic dermatologists.
We know dermal fillers inside out.
Contact our Melbourne clinic