Question:
The correct combination of biomaterials and their medical applications are:
The correct combination of biomaterials and their medical applications are:
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Cellulose is highly valued in pharmaceutical engineering due to its ability to create matrices that release drugs evenly. Plasticized PVC is soft, flexible, and skin-like, making it ideal for molding realistic outer facial prostheses (ears, noses).
Updated On: Jun 23, 2026
- Zirconia - Cochlear replacements, PVC - Intraocular lenses
- Nylon - Artificial heart valves, Zirconia - Cochlear replacements
- Cellulose - Drug delivery, PVC - Facial prostheses
- Gold - Electrodes, PVC - Intraocular lenses
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The Correct Option is C
Solution and Explanation
Concept:
Biomaterials are natural or synthetic substances engineered to interact with biological systems for medical diagnostic or therapeutic purposes. Choosing the correct pairing depends on matching material biocompatibility, structural flexibility, and degradation properties to the target organ tissue.
Step 1: Evaluating the given material combinations.
Let's analyze why option (C) stands out as the correct configuration by looking at the specific properties of the materials:
• Cellulose: A natural polysaccharide polymer characterized by an abundance of functional hydroxyl groups, excellent water absorption, porous network structure, and tuneable biodegradation. These traits make it highly effective for controlled drug delivery systems, scaffolding, and wound dressings.
• PVC (Polyvinyl Chloride): When combined with appropriate plasticizers, flexible PVC can be easily molded, pigmented to accurately mimic natural human skin color, and shows good weatherability and resistance to bodily fluids. Consequently, it is widely utilized in craniofacial reconstruction and facial prostheses.
Step 2: Identifying flaws in the incorrect options.
• Option A & D error: Intraocular lenses (IOLs) inserted inside the eye are historically made from PMMA (Polymethyl Methacrylate), silicone, or hydrophobic acrylics—never rigid, toxic-leaching unplasticized PVC.
• Option B error: Nylon absorbs water in vivo over time, leading to swelling and loss of tensile strength, making it unsafe for highly critical, high-fatigue structures like artificial heart valves (which typically use pyrolytic carbon or titanium). Thus, the only correct application pairing is Cellulose for Drug delivery and PVC for Facial prostheses. This matches Option (C).
Step 1: Evaluating the given material combinations.
Let's analyze why option (C) stands out as the correct configuration by looking at the specific properties of the materials:
• Cellulose: A natural polysaccharide polymer characterized by an abundance of functional hydroxyl groups, excellent water absorption, porous network structure, and tuneable biodegradation. These traits make it highly effective for controlled drug delivery systems, scaffolding, and wound dressings.
• PVC (Polyvinyl Chloride): When combined with appropriate plasticizers, flexible PVC can be easily molded, pigmented to accurately mimic natural human skin color, and shows good weatherability and resistance to bodily fluids. Consequently, it is widely utilized in craniofacial reconstruction and facial prostheses.
Step 2: Identifying flaws in the incorrect options.
• Option A & D error: Intraocular lenses (IOLs) inserted inside the eye are historically made from PMMA (Polymethyl Methacrylate), silicone, or hydrophobic acrylics—never rigid, toxic-leaching unplasticized PVC.
• Option B error: Nylon absorbs water in vivo over time, leading to swelling and loss of tensile strength, making it unsafe for highly critical, high-fatigue structures like artificial heart valves (which typically use pyrolytic carbon or titanium). Thus, the only correct application pairing is Cellulose for Drug delivery and PVC for Facial prostheses. This matches Option (C).
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