PEER-REVIEW | INJECTABLE TREATMENTS | This study gives us a clearer
picture of how our patients may view side-effects when we perform dermal filler treatments with a microcannula.
Needle versus cannula
Teresa A. Cattin’s publication, ‘A single injection technique for midface rejuvenation’2
, describes the approach and
technique used for microcannula enhancement of the midface, specifically the cheek and nasolabial fold. A total of 60 patients were treated over an 18-month period and no significant adverse effects were reported. Complications were limited to a small needle mark at the entry point, which resolved spontaneously. Cheek redness was also reported, but tended to subside within 15–20 minutes of treatment completion. Slight swelling at the entry point on the zygomatic arch was also noted by the author. Further observations include an observed reduction in bruising and swelling when compared with multiple deeper injections. Similarly, Niamtu’s publication, ‘Filler injection with micro-cannula instead of needles’3
, explains the blunt
cannula’s main advantage is an atraumatic procedure with less oedema and bruising. No comparison is made in the publication of the potential side-effects and their degree, or quantifying their extent when comparing hypodermic needles to cannulae.
Conclusion Following from the above analysis of the literature review and the study results, one can state that on the whole, visible side-effects can be described as ranging between minor to moderate and can be easily hidden with make- up. Furthermore, using a microcannula is a fairly comfortable experience for the majority of treated patients and patient satisfaction of the end results remains high. The author believes this is a very interesting study as
the results not only quantify the degree and extent of potential side-effects, but also reveals a patient’s perspective on the side-effect profile of dermal filler treatments in multiple anatomical areas using microcannulae. Typically, when side-effects are assessed by physicians, we base our opinions on the degree and extent of complications we have encountered in our clinical practice. What we, as physicians, think is a minor side-effect (e.g. bruising, erythema, or swelling) may in
References
1. Fulton J, Caperton C, Weinkle S, Dewandre L. Filler injections with the blunt-tip microcannula. J Drugs Dermatol 2012; 11(9): 1098–103
2. Cattin TA. A single injection technique for midface rejuvenation. J Cosmet Dermatol 2010; 9(3): 256–9
3. Niamtu J III. Filler injection with micro-cannula instead of needles. Dermatol Surg 2009; 35(12): 2005–8
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