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Calcium Hydroxylapatite-Based Fillers in Facial Rejuvenation: A Prospective, Single-Center, Unblinded Comparative
Bruna S F Bravo1, Leonardo G Bravo1, Bárbara F Gouvea1
1Department of Dermatology, Bravo Private Clinic, Rio de Janeiro 22440-032, Brazil.
Journal of Clinical Medicine
|June 26, 2025
Summary
Calcium hydroxylapatite (CaHA) dermal fillers like Rennova® Diamond Intense and Radiesse® effectively improve skin thickness, elasticity, and hydration. Both fillers demonstrated high patient and physician satisfaction with minimal, transient side effects, supporting their use in facial rejuvenation.
Area of Science:
- Dermatology
- Aesthetic Medicine
- Biomaterials Science
Background:
- Calcium hydroxylapatite (CaHA) fillers are popular for volumizing and biostimulation in esthetic medicine.
- Limited comparative data exists for different CaHA fillers' clinical outcomes.
- This study compares Rennova® Diamond Intense to Radiesse® for efficacy, safety, and satisfaction.
Purpose of the Study:
- To evaluate and compare the clinical performance of Rennova® Diamond Intense and Radiesse®.
- To assess safety and patient satisfaction with both CaHA fillers.
- To establish Rennova® Diamond Intense's efficacy in facial rejuvenation.
Main Methods:
- Prospective, single-center, unblinded study with 30 participants.
- Bilateral injection of Rennova® Diamond Intense and Radiesse® in the lower and medial posterior facial regions.
- Outcomes measured: dermal thickness, skin elasticity, transepidermal water loss, patient/physician-reported outcomes, and adverse events.
Main Results:
- Both fillers improved dermal thickness, skin elasticity, and reduced transepidermal water loss.
- Patient-reported outcomes showed 'improved' results; physician assessments indicated 'very improved' results by day 120.
- Mild, transient adverse events (pain, swelling, redness, bruising) resolved within 30 days.
Conclusions:
- Rennova® Diamond Intense is effective for increasing dermal thickness and improving skin quality.
- The filler demonstrates high patient and physician satisfaction, comparable to Radiesse®.
- Findings support Rennova® Diamond Intense's safety and efficacy for facial rejuvenation, with a need for further long-term studies.

