Clinical Evaluation on the Performance and Safety of a Non-Ablative Fractional 1340 nm Laser for the Treatment of Stretch Marks in Adolescents and Young Adults: A Case Series

Sonographic Analysis of CureJet Injection Depth Consistency After Abdominal Stretch Mark Treatment Using Hyperdiluted Calcium Hydroxylapatite

Background

This study investigates the effectiveness and consistency of needle-free jet injectors in administering injections at uniform depths, particularly for the treatment of stretch marks. Ensuring consistent injection depth is crucial for achieving optimal therapeutic outcomes, especially when dealing with challenging skin conditions like stretch marks.

Methods

A retrospective study was conducted involving 25 patients treated for abdominal stretch marks using a needle-free injector (CureJet). For each patient, 10 injection sites were assessed via ultrasound, and the depth of the injections was measured. The mean injection depths and standard deviations were calculated for each patient to assess the consistency of injections. The injected substance was diluted calcium hydroxylapatite, a well-known biostimulatory agent used for skin rejuvenation. Injections were repeated over multiple sessions with consistent parameters to evaluate the reproducibility of the technique.

Results

The mean injection depth across patients was 0.5126 cm, with considerable variability observed between patients. The standard deviation ranged from 0.0326 to 0.2132 cm, indicating significant differences in the consistency of injection depths. The statistical analysis demonstrated that the needle-free injector achieved variable depths, with some injections penetrating deeper than intended, whereas others remained superficial.

Conclusions

While needle-free injectors like CureJet provide a promising alternative to conventional needles, achieving consistent injection depths remains a challenge. This study highlights the need for further refinement in injector technology and technique to improve uniformity in treatment depth, particularly for applications like scar treatment and stretch mark reduction. Enhancing precision in such devices could lead to better patient outcomes and increased safety in aesthetic treatments.

The Safe and Effective Profile of Using the 1340 nm Wavelength in Conjunction with Other Therapeutic Modalities for Skin Rejuvenation. A Case Series

Objective: This study provided clinical findings supporting the use of combination techniques/products and Nd:YAP 1340 nm fractional laser therapy, for soft-tissue augmentation in light- and darker-skin phototypes. Background: The face's aging process is complex and involves skin alterations, connective tissues, bone, and fat layers of the face. Methods: A total of 17 female patients were treated for wrinkles and for scars with the use of Nd:YAP 1340 nm fractional laser combined with other cosmetic therapies. The mean of 4.6(±1.9) laser treatment sessions every 1 month were performed. The combined therapy was administered every 3 months during the total course of the laser treatments. Results: The total mean improvement was 3.64(±0.49). Clinical images showed a visible aesthetic improvement. No adverse events have been reported. Conclusion: The combination therapies used have shown promise in maintaining safety and tolerability while improving patient results for the management of skin aging.

Fractional CO2 Laser versus Fractional Radiofrequency for Skin Striae Treatment: Study Protocol for a Randomized Controlled Trial

Striae are common dermal lesions associated with physiological and psychological alterations, affecting the quality of life. This proposed randomized controlled trial protocol will evaluate the clinical efficacy and treatment safety of fractional CO₂ laser versus fractional radiofrequency (FRF) in clinical trials. We will randomly allocate 60 subjects who present abdominal striae into two different groups for the treatment, which will be performed once a month for a 3-month period. The results will be assessed by quartile scoring criteria; by comparing digital photos taken before and after each treatment; and also, by the measurement of cutaneous temperature, skin pH, and elasticity before and after the treatment. This paper describes the rationale and the design of the randomized controlled trial, which may provide evidence for clinical application of the methodology and the quality related to the efficacy and safety of fractional CO₂ laser versus the FRF protocol for striae treatment.

Fractional Q-Switched 1064 nm Laser for Treatment of Atrophic Scars in Asian Skin

Background and Objectives: Asian patients with Fitzpatrick skin type III-IV are a less studied subtype of patients in the medical literature. Q-Switched, 1064 nm neodymium-doped yttrium aluminum garnet (Nd: YAG) laser with a fractionated beam profile (QSF) is a new modality that was reported to be effective in the treatment of scars. This study aims to evaluate the efficacy and safety of QSF Nd: YAG laser in treating scars in Asian patients. Materials and Methods: A total of 29 Subjects were treated with 1064 nm QSF laser. Each patients had three treatments with a fractionated microlens array handpiece every 8 weeks). Efficacy of treatment was evaluated using the Goodman and Baron's quantitative grading scale before and 3 months after the last treatment. Results: All 29 patients treated had significant improvement of acne scars according to Goodman and Baron's Quantitative Global Acne Scarring Grading System. No side effect has been observed except some minor erythematous reactions in three patients. Conclusions: Our results confirm that the 1064 nm QSF Nd: YAG laser is a safe and effective technique for treating scars in Asians.