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Effectiveness and Safety of Calcium Hydroxylapatite With Lidocaine for Improving Jawline Contour.

BACKGROUND
One of the early signs of aging is loss of jawline contour. Not all cases require surgical intervention and soft-tissue augmentation with injectable fillers may restore the profile and youthful appearance of the jawline.


OBJECTIVE
To demonstrate the effectiveness and safety of calcium hydroxylapatite with lidocaine [CaHA (+); Radiesse® (+)] to improve the contour of jawline after deep (subdermal and/or supraperiosteal) injection.


METHODS
Healthy eligible patients with moderate or severe ratings on the Merz Jawline Assessment Scale (MJAS) were randomized 2:1 to treatment with CaHA (+) or to control. Patients in the control group remained untreated until week 12, then received delayed treatment. Touch-ups were allowed in both groups, and re-treatment was allowed in the treatment group only. Effectiveness was evaluated on the MJAS, patient and investigator Global Aesthetic Improvement Scales, and FACE-Q™ questionnaires. Adverse events were recorded over a 60-week period.


RESULTS
Treatment response rate (≥1-point MJAS improvement) was 93/123 (75.6%) for the treatment group and 5/57 (8.8%) for the control/delayed-treatment group at week 12. The difference between response rates was statistically significant (P<0.0001), showing superiority of treatment over control. Satisfaction with aesthetic improvement was reported by patients and treating investigators throughout the study. A total of 76/113 (67.3%) patients who responded to treatment 12 weeks after initial injection also demonstrated persistent improvement 48 weeks after initial treatment. The study demonstrated a favorable safety profile, with no reported unexpected adverse events.


CONCLUSIONS
CaHA (+) is a safe and effective treatment for improving the contour of the jawline. J Drugs Dermatol. 2021;20(11): 1231-1238. doi:10.36849/JDD.6442.