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Wang H, Hamblin MR, Zhang Y, Xu Y, Wen X. Histological evaluation of monopolar and bipolar radiofrequency microneedling treatment in a porcine model. Lasers Surg Med 2024; 56:288-297. [PMID: 38334177 DOI: 10.1002/lsm.23768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 01/23/2024] [Accepted: 01/26/2024] [Indexed: 02/10/2024]
Abstract
BACKGROUND AND OBJECTIVE Fractional radiofrequency microneedling (FRM) is widely used as an option for skin rejuvenation, however there is a lack of histological evidence for the various energy delivery systems available. The objective was to assess thermal denaturation of tissue and the wound healing response in monopolar mode versus bipolar mode. Histological analysis was performed to demonstrate the efficacy of automatic impedance feedback system in monopolar mode. STUDY DESIGN AND METHODS In this study, the acute thermal effects caused by monopolar FRM treatment to the dorsal skin of pigs were assessed histologically by hematoxylin & eosin (H&E) staining. Then, one session of either monopolar or bipolar FRM was used to treat one or the other side of the pig using varying power levels and pulse widths. The acute and chronic tissue reactions were assessed using H&E, immunofluorescence, and western blot analysis at 0, 14, 30, and 90 days after treatment. The efficacy of the impedance feedback system was also monitored histologically. RESULTS High-energy FRM treatment produced tissue loss and necrosis. The power level and pulse duration significantly affected the coagulation amount. Histopathology at 0, 14, 30, and 90 days showed that the skin tissue reaction was more pronounced for bipolar compared to monopolar FRM. Immunofluorescence showed the expression of TGF-β, Ki67, MMP3, and elastin increased dramatically with both modes, but were higher in the bipolar FRM treated side. The automatic impedance feedback system could effectively adjust the output energy. CONCLUSIONS We found that bipolar FRM produced greater thermal effects, more collagen coagulation, and more pronounced molecular changes compared with monopolar mode in a porcine animal model.
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Affiliation(s)
- Hao Wang
- Laboratory of Dermatology, Frontiers Science Center for Disease-related Molecular Network, Clinical Institute of Inflammation and Immunology, West China Hospital, Sichuan University, Chengdu, China
| | - Michael R Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein, South Africa
| | - Yi Zhang
- Research Core Facility of West China Hospital, Sichuan University, Chengdu, Sichuan, China
| | - Yidan Xu
- Laboratory of Dermatology, Frontiers Science Center for Disease-related Molecular Network, Clinical Institute of Inflammation and Immunology, West China Hospital, Sichuan University, Chengdu, China
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
| | - Xiang Wen
- Laboratory of Dermatology, Frontiers Science Center for Disease-related Molecular Network, Clinical Institute of Inflammation and Immunology, West China Hospital, Sichuan University, Chengdu, China
- Department of Dermatology, West China Hospital, Sichuan University, Chengdu, China
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2
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Kneiber D, Amin M, Nguyen TA, Gharavi NM. Review of radiofrequency microneedling: history, devices and uses. J COSMET LASER THER 2023; 25:59-64. [PMID: 37844087 DOI: 10.1080/14764172.2023.2268308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2022] [Accepted: 10/04/2023] [Indexed: 10/18/2023]
Abstract
Radiofrequency microneedling (RFM) has recently become a popular choice for the treatment of various dermatologic conditions and rejuvenation. Many studies have sought to evaluate the efficacy of RFM. However, its role in the management of these conditions remains unclear. A comprehensive literature search including randomized controlled trials, cohort studies, and case series evaluating the efficacy of RFM in various skin conditions was performed. In this review, we discuss the history and mechanism of RFM, describe various device features, and discuss the use of RFM in various skin conditions and rejuvenation.
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Affiliation(s)
- Diana Kneiber
- Department of Dermatology, Kaiser Permanente Los Angeles Medical Center, Los Angeles, CA, USA
| | - Mina Amin
- Department of Dermatology, Kaiser Permanente Los Angeles Medical Center, Los Angeles, CA, USA
| | - Tuyet A Nguyen
- Department of Dermatology, Kaiser Permanente Los Angeles Medical Center, Los Angeles, CA, USA
| | - Nima M Gharavi
- Department of Dermatologic Surgery & Mohs Micrographic Surgery, Cedars-Sinai Medical Center, Beverly Hills, CA, USA
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3
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Alexiades M. Radiofrequency Microneedling. Facial Plast Surg Clin North Am 2023; 31:495-502. [PMID: 37806682 DOI: 10.1016/j.fsc.2023.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2023]
Abstract
Radiofrequency microneedling is a technique that allows energy to be delivered to specified target depths in the skin via needle electrodes and measures temperature and impedance within the tissue. This method of delivery and real-time feedback has increased safety and efficacy, providing clinically significant improvements in skin laxity, rhytids, and cellulite.
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Affiliation(s)
- Macrene Alexiades
- Yale University School of Medicine, New Haven, CT, USA; Dermatology & Laser Surgery Center of New York, NY, USA.
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4
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Kim KE, Park JH, Seul TW, Kim IH, Ryu HJ. Periorbital Skin Rejuvenation of Asian Skin Using Microneedle Fractional Radiofrequency. Ann Dermatol 2023; 35:360-366. [PMID: 37830418 PMCID: PMC10579575 DOI: 10.5021/ad.22.217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 05/15/2023] [Accepted: 05/15/2023] [Indexed: 10/14/2023] Open
Abstract
BACKGROUND The periorbital area plays an important role cosmetically. Periorbital wrinkles are attributed to long-term, repeated use of orbicularis oris muscles and UV-induced dermal collagen degeneration. Fractional microneedle radiofrequency (RF) treats scars and laxity by creating vertical channels of injury in the dermis, triggering a scarless healing cascade and neocollagenesis. OBJECTIVE To evaluate the effect and safety of a novel fractional microneedle RF device on periorbital wrinkles based on several objective indicators. METHODS Eleven healthy Korean patients aged 30 to 75 years with periorbital wrinkles were included in this study. Wrinkle grades were evaluated using the Fitzpatrick wrinkle assessment scale (WAS). The melanin and erythema index, transepidermal water loss (TEWL), and three parameters for elasticity were recorded. Skin biopsies were obtained in patients who consented. RESULTS All patients exhibited wrinkle improvement in the lateral periorbital area, and two patients also showed efficacy in the lower eyelid area. There was a statistically significant decrease in WAS and a significant improvement in the melanin index of V4 and V5. TEWL also showed a considerable decline on V4 and V5, suggesting that the water content of the skin increased with repeated laser sessions. A peak increase in viscoelasticity and a decrease in retraction time following the first laser application were observed. In the histopathologic examination, the dermis had a denser collagen and elastin content. CONCLUSION Microneedle fractional RF resulted in statistically significant long-term clinical improvement of periorbital wrinkles and enhanced pigmentation and skin hydration.
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Affiliation(s)
- Ko Eun Kim
- Department of Dermatology, Korea University Ansan Hospital, Ansan, Korea
| | - Jong Heon Park
- Department of Dermatology, Korea University Ansan Hospital, Ansan, Korea
| | - Tae Woong Seul
- Department of Dermatology, Korea University Ansan Hospital, Ansan, Korea
| | - Il-Hwan Kim
- Department of Dermatology, Korea University Ansan Hospital, Ansan, Korea
| | - Hwa Jung Ryu
- Department of Dermatology, Korea University Ansan Hospital, Ansan, Korea.
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5
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Wang Y, Sun Z, Cai L, Zhang F. Comparative efficacy and safety of six photoelectric therapies for the atrophic acne scars: A network meta-analysis. Indian J Dermatol Venereol Leprol 2023; 89:353-362. [PMID: 37067138 DOI: 10.25259/ijdvl_572_2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 07/01/2022] [Indexed: 02/05/2023]
Abstract
Objectives
This network meta-analysis assessed the relative efficacy and safety of six common photoelectric therapies including 1064-nm neodymium-doped yttrium aluminum garnet (Nd: YAG), fractional carbon dioxide laser(FSCO2), fractional micro-plasma radiofrequency(Plasma), micro-needling fractional radiofrequency (MRF), 1550nm or 1540nm erbium-glass non-ablative fractional laser (NAFL) fractional erbium-doped yttrium aluminum garnet (Er: YAG).
Methods
A comprehensive search to identify relevant studies was conducted using four electronic databases. Outcome measures were extracted based on subjective and objective indexes, including the dermatologists’ evaluation(DE), the patients’ overall satisfaction(PS), VAS score, and Postinflammatory hyperpigmentation (PIH).
Results
Eleven published clinical research studies, involving 405 patients were included in this study. Ranking of DE from large to small is as follows: Nd: YAG, FSCO2, Er: YAG, Plasma, NAFL, MRF. In terms of PS, the rand from high to low can be described as follows: Er: YAG, Nd: YAG, FSCO2, Plasma, NAFL, MRF. In connection with the sequencing of adverse events, pain severity from slight to severe as follows: Er:YAG, Nd:YAG, FSCO2, NAFL, MRF, Plasma. The probability of having PIH are presented in order from lowest to highest as follows: MRF, Plasma, Nd: YAG, NAFL, Er: YAG, FSCO2.
Conclusion
FSCO2 remains the mainstream of potentially curative treatment, then again Nd: YAG and Er: YAG require greater efforts to prove their superior effectiveness. NAFL might be appropriate for mild and moderate improvement with its strengths of good tolerance while Plasma fits into patients with higher pain thresholds but an expectation of higher results. MRF has not given expression on absolute predominance for the present.
Registration
PROSPERO CRD42021242160
(available from https://www.crd.york.ac.uk/prospero).
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Affiliation(s)
| | | | - Lingling Cai
- Department of Dermatology, Dongfang Hospital of Beijing University of Chinese Medicine, Beijing, China
| | - Fengchuan Zhang
- Department of Dermatology, Dongfang Hospital of Beijing University of Chinese Medicine, Beijing, China
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6
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Baek G, Kim MH, Jue MS. Efficacy of microneedle radiofrequency therapy in the treatment of senile purpura: A prospective study. Skin Res Technol 2022; 28:856-864. [PMID: 36314292 PMCID: PMC9907668 DOI: 10.1111/srt.13225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 10/13/2022] [Indexed: 11/05/2022]
Abstract
BACKGROUND Radiofrequency (RF) devices have been used for skin rejuvenation and treating skin laxity. It may also be effective for senile purpura (SP) based on its action of promoting neocollagenesis with minimal epidermal damage. This study aimed to evaluate the efficacy and safety of microneedle RF for treating SP of the forearms in elderly. MATERIAL AND METHODS In this prospective study, 23 patients who underwent a single session of microneedle RF device (GENIUS, Lutronic Co., Korea) therapy for SP were enrolled. Histopathological features were assessed 1 week before and 8 weeks after therapy. The total amount of collagen and elastic fibers were measured using the computer vision method, and epidermal thickness and the number of blood vessels were analyzed using ImageJ. The clinical improvements were evaluated by blinded evaluators and the patients using investigator global assessment (IGA) and patient global assessment (PGA), respectively. Data regarding the number of purpuric lesions and the size of the largest lesion were collected via a telephone survey. RESULTS The total amount of collagen and elastic fibers, and mean epidermal thickness tended to improve after RF treatments, although they did not reach statistical significance. The locally estimated scatterplot smoothing curve showed decreasing tendency in both size and number of purpuras as weeks progressed. PGA showed very satisfied in 65% of patients and IGA showed 39% near-total improvement and 43% marked improvement. There were no serious adverse events. CONCLUSIONS Microneedle RF therapy induces remodeling of dermal circumstances with minimal epidermal impairment. It may be a promising therapeutic option for SP.
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Affiliation(s)
- Gayun Baek
- Department of Dermatology, Veterans Health Service Medical Center, Seoul, Republic of Korea
| | - Moon Hwan Kim
- School of Electrical and Electronic Engineering, Yonsei University, Seoul, Republic of Korea
| | - Mihn-Sook Jue
- Department of Dermatology, Hanyang University Hospital, Seoul, Republic of Korea
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7
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Piętowska Z, Nowicka D, Szepietowski JC. Understanding Melasma-How Can Pharmacology and Cosmetology Procedures and Prevention Help to Achieve Optimal Treatment Results? A Narrative Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:ijerph191912084. [PMID: 36231404 PMCID: PMC9564742 DOI: 10.3390/ijerph191912084] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Revised: 09/14/2022] [Accepted: 09/15/2022] [Indexed: 05/06/2023]
Abstract
Melasma is a chronic skin condition that involves the overproduction of melanin in areas exposed to ultraviolet radiation. Melasma treatment is long-term and complicated with recurrence and resistance to treatment. The pathogenesis of melasma is highly complex with multiple pathologies occurring outside of the skin pigment cells. It includes photoaging, excessive melanogenesis, an increased number of mast cells, increased vascularization, and basement membrane damage. In addition, skin lesions related to melasma and their surrounding skin have nearly 300 genes differentially expressed from healthy skin. Traditionally, melasma was treated with topical agents, including hydroquinone, tretinoin, glucocorticosteroids and various formulations; however, the current approach includes the topical application of a variety of substances, chemical peels, laser and light treatments, mesotherapy, microneedling and/or the use of systemic therapy. The treatment plan for patients with melasma begins with the elimination of risk factors, strict protection against ultraviolet radiation, and the topical use of lightening agents. Hyperpigmentation treatment alone can be ineffective unless combined with regenerative methods and photoprotection. In this review, we show that in-depth knowledge associated with proper communication and the establishment of a relationship with the patient help to achieve good adherence and compliance in this long-term, time-consuming and difficult procedure.
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Affiliation(s)
- Zuzanna Piętowska
- Department of Dermatology, Venereology and Allergology, Wrocław Medical University, 50-368 Wrocław, Poland
| | - Danuta Nowicka
- Department of Dermatology, Venereology and Allergology, Wrocław Medical University, 50-368 Wrocław, Poland
- Faculty of Physiotherapy, Wroclaw University of Health and Sport Sciences, 51-612 Wrocław, Poland
- Correspondence:
| | - Jacek C. Szepietowski
- Department of Dermatology, Venereology and Allergology, Wrocław Medical University, 50-368 Wrocław, Poland
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8
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Hendricks AJ, Farhang SZ. Dermatologic facial applications of Morpheus8 fractional radiofrequency microneedling. J Cosmet Dermatol 2022; 21 Suppl 1:S11-S19. [PMID: 35916259 DOI: 10.1111/jocd.15231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/29/2022] [Accepted: 07/06/2022] [Indexed: 11/29/2022]
Abstract
Dermatologic patients are expressing increasing interest in minimally invasive procedures to address a wide range of common concerns from skin laxity to acne and scarring. Fractional radiofrequency (RF) microneedling offers an effective method for addressing a variety of dermatologic conditions with reduced downtime compared with historically more invasive procedural approaches. This article aims to describe the technology utilized in fractional RF microneedling (Morpheus8, InMode Aesthetics) and its studied applications in dermatology for treatment of the face.
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Affiliation(s)
- Aleksi J Hendricks
- Division of Dermatology, Department of Medicine, University of Arizona, Tucson, Arizona, USA
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9
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Alenichev AY, Kruglova LS, Fedorov SM, Sharypova IV, Ast NA. Evaluation of clinical results of combined correction of age-related skin changes using fractional microneedle therapy and platelet-rich plasma activated by autologous thrombin. VESTNIK DERMATOLOGII I VENEROLOGII 2022. [DOI: 10.25208/vdv1312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
Background. Involutive processes in the human body are often accompanied by the only visible manifestation - a change in appearance. Against this background, the search for new treatment methods that will focus on timely and rational correction of age-related skin changes and combine the possibility of complex effects on the mechanisms of skin aging is relevant. Hardware physiotherapy technologies and innovative autologous cellular preparations have a powerful regenerative potential, trigger and support physiological tissue regeneration. Despite the substantial amount of data on combined aesthetic correction protocols, there were only isolated data in the domestic and foreign literature on the combined use of fractional needle radiofrequency therapy and platelet-rich plasma activated by autologous thrombin. This was the basis for this study.
Aims. To evaluate the results of a combined method for correcting age-related skin changes based on a combination of hardware fractional needle radiofrequency exposure and injection therapy with platelet-rich plasma activated by autologous thrombin, comparing to monotherapy the same methods.
Materials and methods. Fractional microneedle radiofrequency therapy was carried out three times with an interval between procedures of 3 weeks with the use of a high-frequency electrosurgical device Scarlet RF. Therapy with autologous plasma rich in platelets activated by autologous thrombin (PRP therapy) was performed three times with an interval between procedures of 3 weeks without the use of preliminary topical anesthesia. Combination therapy combined the use of the above methods. Regression of clinical signs of skin aging was evaluated according to digital dermatoscopy and regression of the total value of the dermatological index of the quality of life of patients, as well as improvement of qualitative and functional parameters of the skin. A statistical analysis was carried out.
Results. A comparative analysis of the influence of various methods of correction of involutive changes in the skin of the face showed that the use of combination therapy provides the development of the most significant clinical effect in relation to all the assessed signs of skin aging. Combination therapy was accompanied by a significant increase in the integral index of microcirculation, regardless of age. The reconstructive effect on the morphological structures of the skin according to ultrasonography also turned out to be significantly higher for the combined method of treatment in comparison with radiofrequency therapy.
Conclusions. The combined use of fractional microneedle radiofrequency therapy and PRP therapy provides a more effective and prolonged correction of age-related skin changes compared to the monotherapy.
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10
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Guida S, Longhitano S, Spadafora M, Lazzarotto A, Farnetani F, Zerbinati N, Pellacani G, Galadari H. Hyperdiluted calcium hydroxylapatite for the treatment of skin laxity of the neck. Dermatol Ther 2021; 34:e15090. [PMID: 34363289 DOI: 10.1111/dth.15090] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/25/2021] [Accepted: 08/04/2021] [Indexed: 11/27/2022]
Abstract
Despite being a common concern, there are very few minimally invasive treatments targeting neck skin laxity (NSL) reported in the literature. To assess the efficacy of hyperdiluted calcium hydroxyapatite (hy-CaHA) for the treatment of NSL, according to the NSL scale, and to estimate safety. Twenty patients showing NSL were treated with hy-CaHA 1:2. To evaluate the efficacy of hy-CaHA treatment for NSL, pictures of treated subjects were collected before and 3 months after treatment and graded according to the NSL scale, and T-student's test was applied to estimate differences. Hy-CaHA for the neck was effective according to the previously unreported NSL scale (p < 0.001) and safe. There were no major adverse events reported. This study supports the efficacy (according to the NSL scale) and safety of hy-CaHA (1:2) for NSL. Our results also highlight the utility of the newly developed NSL scale, being a useful tool to evaluate the level of NSL before treatment and to measure the outcome.
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Affiliation(s)
- Stefania Guida
- Dermatology Unit, Department of Surgical, Medical, Dental and Morphological Sciences related to Transplant, Oncology and Regenerative Medicine, University of Modena and Reggio Emilia, Modena, Italy
| | - Sabrina Longhitano
- Dermatology Unit, Department of Surgical, Medical, Dental and Morphological Sciences related to Transplant, Oncology and Regenerative Medicine, University of Modena and Reggio Emilia, Modena, Italy
| | - Marco Spadafora
- Dermatology Unit, Department of Surgical, Medical, Dental and Morphological Sciences related to Transplant, Oncology and Regenerative Medicine, University of Modena and Reggio Emilia, Modena, Italy
| | - Andrea Lazzarotto
- Maxillofacial Surgery Unit, Academic Hospital of Udine, Department of Medical and Biological Sciences, University of Udine, Udine, Italy
| | - Francesca Farnetani
- Dermatology Unit, Department of Surgical, Medical, Dental and Morphological Sciences related to Transplant, Oncology and Regenerative Medicine, University of Modena and Reggio Emilia, Modena, Italy
| | - Nicola Zerbinati
- Department of Surgical and Morphological Sciences, University of Insubria, Varese, Italy
| | - Giovanni Pellacani
- Dermatology Unit, Department of Surgical, Medical, Dental and Morphological Sciences related to Transplant, Oncology and Regenerative Medicine, University of Modena and Reggio Emilia, Modena, Italy.,Dermatology Clinic, Department of Clinical Internal, Anesthesiological and Cardiovascular Sciences, Sapienza University of Rome, Rome, Italy
| | - Hassan Galadari
- Department of Dermatology, United Arab Emirates University, Dubai, United Arab Emirates
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11
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Kam J, Frost A, Bloom JD. Radiofrequency Rejuvenation of the "Tweener" Patient: Under, Over, or Through the Skin. Facial Plast Surg 2021; 37:240-248. [PMID: 33511577 DOI: 10.1055/s-0041-1722890] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
Abstract
The demand for noninvasive facial rejuvenation continues to increase as younger, well-informed patients enter the aesthetic market. We refer to a subset of these patients as "tweeners," those who present with early signs of neck and facial aging, but who have not yet developed changes significant enough to warrant a traditional excisional surgery approach. Many of these patients are in search of a minimally invasive intervention, a bridge in between observation and surgery. The authors describe their experience with radiofrequency (RF) technology as an in-office tool to address the aging face in a select patient population. This review also attempts to comprehensively search the existing body of literature to describe the RF technologies and devices available for facial rejuvenation. The efficacy and safety profiles of the devices are discussed, and the devices are categorized by their method of RF delivery-over (contact), through (microneedle), and under (percutaneous) the skin.
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Affiliation(s)
- Joanna Kam
- Division of Facial Plastic Surgery, Department of Otorhinolaryngology, Head and Neck Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Ariel Frost
- Department of Otorhinolaryngology, Head and Neck Surgery, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jason D Bloom
- Division of Facial Plastic Surgery, Department of Otorhinolaryngology, Head and Neck Surgery, University of Pennsylvania, Philadelphia, Pennsylvania.,Bloom Facial Plastic Surgery, Bryn Mawr, Pennsylvania
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12
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Suh DH, Ahn HJ, Seo JK, Lee SJ, Shin MK, Song KY. Monopolar radiofrequency treatment for facial laxity: Histometric analysis. J Cosmet Dermatol 2020; 19:2317-2324. [PMID: 32319176 DOI: 10.1111/jocd.13449] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/26/2020] [Accepted: 04/16/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND A monopolar radiofrequency device can be used in facial tightening. The device targets the dermis and fibrous septae, and the treatment results in immediate collagen contraction and the induction of subsequent collagen remodeling. AIMS We aimed to evaluate the histometric change of the subjects treated with a monopolar radiofrequency device using a novel tip. MATERIALS AND METHODS Eleven subjects with skin types III and IV participated in the study. They received a single session of a monopolar radiofrequency on the face, and biopsies were performed before treatment, and 2 and 6 months after the treatment. Hematoxylin and eosin, Masson trichome, and Victoria blue stains were used. An image analysis was performed using the Image J software. The dermal density of collagen and elastic fiber, and the coherency of collagen fibers were assessed in the papillary, upper reticular, and lower reticular dermises, respectively. RESULTS The monopolar radiofrequency treatments led to improvements in collagen fiber density and coherency. In the Masson trichome staining, the collagen fiber densities were 0.736 ± 0.06 and 0.652 ± 0.063 before treatment and increased to 0.773 ± 0.044 (P = .018) and 0.686 ± 0.05 (P = .045) in the papillary and lower reticular dermises, respectively. The density of the elastic fibers in all parts of the dermis showed a tendency to increase after treatment, though not statistically significantly. The mean coherency was higher after than before treatment. CONCLUSIONS In this in vivo study, we found that the collagen and elastic fiber densities and architectural structures were improved after treatment.
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Affiliation(s)
| | - Hye-Jin Ahn
- Department of Dermatology, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Jong-Kil Seo
- Department of Dermatology, College of Medicine, Kyung Hee University, Seoul, Korea
| | | | - Min Kyung Shin
- Department of Dermatology, College of Medicine, Kyung Hee University, Seoul, Korea
| | - Kye Young Song
- Department of Pathology, Kuro Sungsim Medical Center, Seoul, Korea
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