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Kong YQ, Dong XX, Wu B, Shu P, Li CX, Bao WW, Zheng XW, Liu J, Cheng ML, Yang YQ, Huang XF. A Novel Air-Cooled Nd:YAG Laser for the Treatment of the Venous Lakes of the Lips. Photobiomodul Photomed Laser Surg 2024; 42:230-237. [PMID: 38417045 DOI: 10.1089/photob.2023.0105] [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: 03/01/2024] Open
Abstract
Objective: To evaluate the therapeutic effect of a novel air-cooled Nd:YAG laser in the venous lakes of the lips (VLL). Background: The thermal injury is one of the most important issues during laser therapy for venous lakes. Methods: Six pieces of fresh pork livers were used to provide 30 regions with a diameter of 6 mm for experiment in vitro, among which 15 regions were treated by Nd:YAG laser with air cooling until the tissue turned gray-white, whereas the rest were treated without air cooling as control. The operation time of laser irradiation, the degree of temperature increase, and the depth of coagulation tissue were compared between two groups. Then, 60 VLL patients were selected for Nd:YAG laser treatment with or without air cooling. The operation time of laser irradiation, the degree of temperature increase, the postoperative pain visual analog scale (VAS) score, and the percentage of lesions removed within 1 month were compared. Results: In tissue studies, the treated group showed a longer operation time of laser irradiation (p < 0.01), a lower degree of temperature increase (p < 0.01), and there was no significant statistical difference in the depth of coagulation tissue (p = 0.624). In clinical studies, the treated group showed a longer operation time of laser irradiation (p < 0.01), a lower degree of temperature increase (p < 0.01), and a lower VAS score on the 1st and 2nd day, compared with the control group (p < 0.01). Conclusions: Air cooling during Nd:YAG laser for the treatment of VLL can prolong the surgical time, but lowered tissue temperature and reduced patient pain within 2 days under the premise of ensuring the treatment effect.
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Affiliation(s)
- Ya-Qun Kong
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Xiao-Xi Dong
- Laboratory of Laser Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Institute of Biomedical Engineering, Tianjin, China
| | - Bin Wu
- Department of Stomatology, Beijing Luhe Hospital, Capital Medical University, Beijing, China
| | - Ping Shu
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Chang-Xu Li
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Wei-Wei Bao
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Xiao-Wan Zheng
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Juan Liu
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Meng-Lin Cheng
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yu-Qing Yang
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Xiao-Feng Huang
- Department of Stomatology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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Park S, Kim H, Kim JY, Lee EJ, Bae YJ, Oh SH, Kim J. Dual-wavelength long-pulsed 755-nm alexandrite/1,064-nm Nd:YAG laser versus Nd:YAG alone for treatment of palmoplantar verruca. J COSMET LASER THER 2023; 25:86-91. [PMID: 37839083 DOI: 10.1080/14764172.2023.2268309] [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: 12/26/2022] [Accepted: 10/04/2023] [Indexed: 10/17/2023]
Abstract
We compared the effectiveness and safety of the long-pulsed neodymium-doped yttrium-aluminum-garnet (Nd:YAG) laser alone and combined with a 755-nm alexandrite laser for treating palmoplantar warts. We divided patients into two groups to receive up to four monthly treatments with Nd:YAG alone (single-wavelength) or combined with the alexandrite laser (dual-wavelength). We assessed treatment responses (according to clearance rate), vascular/hyperkeratosis grades, and patient satisfaction and pain ratings. The differences in treatment response (p = .348), patient satisfaction (p = .560), and pain ratings (p = .728) between the groups were not significant. The single- and dual-wavelength treatment options were equally effective in treating recalcitrant palmoplantar warts.
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Affiliation(s)
- Sujin Park
- Department of Dermatology and Cutaneous Biology Research Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Hyun Kim
- Department of Dermatology, Yongin Severance Hospital, Yongin, Korea
| | - Ji Young Kim
- Department of Dermatology and Cutaneous Biology Research Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Eun Jung Lee
- Department of Dermatology and Cutaneous Biology Research Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Yu Jeong Bae
- Department of Dermatology and Cutaneous Biology Research Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Sang Ho Oh
- Department of Dermatology and Cutaneous Biology Research Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Jihee Kim
- Department of Dermatology and Cutaneous Biology Research Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
- Department of Dermatology, Yongin Severance Hospital, Yongin, Korea
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Chen C, Ke Y. Applications of Long-Pulse Alexandrite Laser in Cosmetic Dermatology: A Review. Clin Cosmet Investig Dermatol 2023; 16:3349-3357. [PMID: 38021435 PMCID: PMC10661922 DOI: 10.2147/ccid.s441169] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Accepted: 11/14/2023] [Indexed: 12/01/2023]
Abstract
The long-pulse alexandrite laser uses Cr3+:BeAl2O4 crystals as the activation medium and has a 755nm wavelength and millisecond pulse duration. The long-pulse alexandrite laser has been utilized for hair removal, vascular lesions, pigmented lesions, and other conditions because melanin and hemoglobin in the skin, subcutaneous tissues, and skin appendages can specifically absorb this type of laser. To serve as a guide and source of inspiration for the clinical use of this type of laser, we review the present research status and advancement of the long-pulse alexandrite laser in the treatment of the aforementioned categories of disorders.
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Affiliation(s)
- Changhan Chen
- Department of Cosmetology, Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine, Affiliated Zhejiang Chinese Medical University, Wenzhou, Zhejiang, 325000, People’s Republic of China
- Wenzhou Key Laboratory of Laser Cosmetology, Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine, Affiliated Zhejiang Chinese Medical University, Wenzhou, Zhejiang, 325000, People’s Republic of China
| | - Youhui Ke
- Department of Cosmetology, Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine, Affiliated Zhejiang Chinese Medical University, Wenzhou, Zhejiang, 325000, People’s Republic of China
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Muacevic A, Adler JR, Moreira de Freitas P. Importance of the Right Protocol in Using a Diode Laser (980 nm) for Small Oral Vascular Malformation Treatment. Cureus 2023; 15:e33643. [PMID: 36643087 PMCID: PMC9832939 DOI: 10.7759/cureus.33643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/11/2023] [Indexed: 01/13/2023] Open
Abstract
Small vascular anomalies are commonly present on the lips and other areas of the oral mucosa. These lesions are also known as venous lake lesions, and they can be treated in many ways with surgical and non-surgical methods. Laser is an arising technique for this type of procedure and its use has been growing in dental practices in the last years. The technique that uses the diode laser delivers the energy in a non-contact treatment, leading to the coagulation of the lesion in a minimally invasive manner, and for this reason, there is less chance of developing scar formation. In this report, a 56-year-old female patient had a vascular lesion on her lower lip measuring about 3.0 mm in diameter. The patient reported having it for more than 10 years. A first approach using a high-power diode laser had already been done but with no success. At this time, the diode laser was used under local anesthesia, with a flexible quartz fiber held 2 to 3 mm from the lesion, using the continuous wave mode set, 1.0 W of power for 10 seconds, with an interval of 30 seconds to prevent heat damage to the adjacent tissue. The laser was applied until the lesion appeared white and with evidence of shrinkage. In this case, two rounds of irradiation were done. After a 30-day follow-up, the lesion was repaired with no signs of scars on the lip. The diode laser is an effective technique for treating this type of lesion, with many advantages, such as providing coagulation, excellent healing, no postoperative complication, and no need for suturing. Besides all, it is also a low-cost procedure, small lesions usually require only one appointment, and this treatment is also better accepted by the patients.
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Trafalski M, Kozakiewicz M, Jurczyszyn K. Application of Fractal Dimension and Texture Analysis to Evaluate the Effectiveness of Treatment of a Venous Lake in the Oral Mucosa Using a 980 nm Diode Laser-A Preliminary Study. MATERIALS 2021; 14:ma14154140. [PMID: 34361334 PMCID: PMC8347063 DOI: 10.3390/ma14154140] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Revised: 07/13/2021] [Accepted: 07/22/2021] [Indexed: 12/15/2022]
Abstract
Venous lake (VL) is a common lesion resulting from the enlargement of thin-walled veins surrounded by a thick wall of fibrous tissue. Photocoagulation is becoming one of the basic methods for treating small vascular lesions. The aim of this study was an application of texture analysis (TA) and fractal dimension analysis (FDA) to evaluate VL treatment. Twenty-three VLs were included in the study. We used a 980 nm diode laser, 6 W, 100 ms pulse mode with a 50% duty cycle. The total dose of energy was in a range from 80 J to 600 J. We used the difference of intensity algorithm for FDA and microcontrast and a co-occurrence matrix for TA. A complete therapeutic effect was achieved in 83%, and in 9%, scar formation was observed after three months. No healing was observed in 4%, and there was partial healing in 4%. No differences in FD were observed between the lesions after three months and the healthy mucosa. The fractal dimension and microcontrast of a vascular lesion are mutually coupled. FDA and TA is a useful and objective method of assessing treatment effects for venous lakes. The non-contact mode of the 980 nm diode laser is an effective and safe method for treating a VL.
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Affiliation(s)
- Mateusz Trafalski
- Department of Dental Surgery, Wroclaw Medical University, Krakowska 26, 50-425 Wroclaw, Poland;
| | - Marcin Kozakiewicz
- Department of Maxillofacial Surgery, Medical University of Lodz, 113 S. Żeromski Street, 90-549 Lodz, Poland;
| | - Kamil Jurczyszyn
- Department of Dental Surgery, Wroclaw Medical University, Krakowska 26, 50-425 Wroclaw, Poland;
- Correspondence:
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