Comparison of different thread products for facial rejuvenation: Materials and barb designs |
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| Authors: | Lideng Cao MD He Qiu MD Donglei Yu MD Liu Shuo MD Hang Wang MD PhD |
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| Affiliation: | 1. Department of Oral and Maxillofacial Surgery and State Key Laboratory of Oral Diseases, Sichuan University West China College of Stomatology, Chengdu, China;2. National Engineering Research Center for Biomaterials, Sichuan University college of biomedical engineering, Chengdu, China |
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| Abstract: | Background In recent years, the thread-lifting technique has become widely used in clinical settings. Several thread products are used in clinical practice, and there are many differences between products in terms of many aspects. Methods Six commercial thread products were collected and evaluated. The general structure, microstructure, elastic modulus, and strength were evaluated using microscopies and tensile testing in vitro. Seventy-two female rats were divided into six groups. Tissue samples were harvested and histologically evaluated at 1st, 4th, 8th, and 12th week using hematoxylin and eosin and Masson's trichrome staining. Results There were differences between products in terms of barb shape, microstructure, elasticity, and strength, and that could be attributed to the materials and barb structures. All threads showed good biological safety, and the density of collagen area in the dermis was increased compared to that in the control group. Conclusions This study provided an objective evaluation of barbed thread products, which indicated that all products can be used safely with certain effects in different indications. |
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| Keywords: | barbed suture face lift tensile testing thread lifting |
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