Submitted:
11 June 2025
Posted:
12 June 2025
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Abstract
Keywords:
Introduction
Methodology
Inclusion Criteria:
- Articles in English, published between January 2015 and May 2025.
- Peer-reviewed studies, including original research, systematic reviews, meta-analyses, or comprehensive reviews.
- Studies exploring the development, testing, or clinical use of bioengineered skin substitutes.
- Research addressing aesthetic or functional outcomes in reconstruction.
- Studies reporting patient-centered outcomes, such as satisfaction, pain, or cosmetic appearance.
Exclusion Criteria:
- Articles predating January 2015.
- Non-peer-reviewed sources like conference abstracts or opinion pieces.
- Case reports or small case series (n<5).
- Studies focused solely on acute wound healing without aesthetic focus.
- Research unrelated to skin tissue engineering.
Findings
- I.
- Types and Evolution of Bioengineered Skin Substitutes
- Acellular Dermal Matrices (ADMs): Derived from human or animal dermis, products like Integra, AlloDerm, and Strattice create collagen-rich scaffolds that invite host cells and blood vessels. These matrices excel at reducing scar stiffness and improving skin flexibility, especially in deep wounds (Mohammadi et al., 2024; Wang et al., 2023). Integra, for instance, has shown lasting scar improvement in burn patients (Heimbach et al., 2019).
-
Cellularized Skin Substitutes:
- o Dermal Equivalents: Apligraf and Dermagraft, which embed fibroblasts in collagen, sometimes with keratinocytes, boost healing by mimicking living tissue. Originally developed for chronic wounds, they’re now adapted for reconstruction, fostering blood vessel growth (Moura et al., 2023).
- o Cultured Epidermal Autografts (CEAs): Epicel uses a patient’s own keratinocytes to form thin epidermal layers, ideal for burns but delicate and prone to shrinkage without dermal support (Braza & Fahrenkopf, 2024).
- o Composite Skin Substitutes: These combine dermal and epidermal layers, often with growth factors or stem cells, to enhance blood supply and restore skin features like hair follicles (Fadilah et al., 2024; Han et al., 2024).
-
Advanced Approaches:
- o 3D Bioprinting: This technology layers cells and biomaterials to craft custom skin, with potential to include hair and sweat glands (Jorgensen et al., 2020; Surowiecka et al., 2023).
- o Stem Cell Therapies: Mesenchymal and induced pluripotent stem cells improve regeneration and reduce immune reactions, paving the way for more resilient substitutes (Jin et al., 2023; Kim et al., 2022).
- II.
- Clinical Applications in Aesthetic Reconstruction
- Facial Reconstruction: In areas where appearance is paramount, ADMs and cellular constructs improve scar texture and color matching after cancer surgery, trauma, or congenital defects (Mohammadi et al., 2024; Wang et al., 2023; Lee et al., 2023).
- Burn Reconstruction: Substitutes facilitate initial wound closure and later scar revision, minimizing contractures (Colazo et al., 2020; Smith et al., 2021).
- Breast Reconstruction: ADMs support implants or tissue expanders, creating natural contours with less rippling (Mendelsohn et al., 2024; Jones et al., 2022).
- Chronic Wounds: In visible areas, substitutes enhance tissue quality, reducing long-term scarring (Moura et al., 2023; Brown et al., 2023).
- III
- Patient-Centered Outcomes (PROs)
- Cosmetic Appearance: Tools like the Vancouver Scar Scale and POSAS show ADMs improve scar softness and texture, though matching skin tone remains tricky (Mohammadi et al., 2024; Wang et al., 2023; Chen et al., 2024).
- Pain and Discomfort: By eliminating donor sites, substitutes reduce pain and speed recovery (Bhatia, 2020; Taylor et al., 2023).
- Quality of Life (QoL): PROMs like SF-36 and FACE-Q reveal gains in physical comfort, emotional well-being, and social confidence (Mohammadi et al., 2024; OTO Open, 2024; Wilson et al., 2022).
- Functional Outcomes: Substitutes prevent tight scars in areas like joints, improving movement (Colazo et al., 2020; Park et al., 2023).
Discussion
Conclusion
Acknowledgments
References
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| Substitute Type | Composition | Key Characteristics | Aesthetic Applications | Advantages | Limitations | Key References |
|---|---|---|---|---|---|---|
| Acellular Dermal Matrices (ADMs) | Decellularized human/animal dermis | Scaffold for host cells, promotes neovascularization | Facial defects, burns, breast reconstruction | Reduces contractures, improves pliability | No living cells, may require secondary graft, cost | Mohammadi et al., 2024; Wang et al., 2023 |
| Cellularized Dermal Equivalents | Fibroblasts in collagen/biopolymer matrix | Biologically active, promotes healing | Chronic wounds, complex reconstruction | Delivers growth factors, enhances angiogenesis | Limited strength, short shelf life, immune risk | Moura et al., 2023 |
| Cultured Epidermal Autografts (CEAs) | Autologous keratinocytes | Epidermal coverage for large defects | Extensive burns | Autologous, unlimited from biopsy | Fragile, prone to contracture, lacks dermis | Braza & Fahrenkopf, 2024 |
| Composite Skin Substitutes | Dermal and epidermal components | Mimics native skin | Full-thickness defects, facial reconstruction | Dermal and epidermal coverage | Complex manufacturing, immune rejection risk | Han et al., 2024; Fadilah et al., 2024 |
| 3D Bioprinted Skin | Bio-inks with cells, biomaterials | Precise architecture, adnexal potential | Future complex defects (e.g., face) | Customizable, full regeneration potential | Experimental, vascularization challenges | Jorgensen et al., 2020; Surowiecka et al., 2023 |
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