Table 3.

Comparison between hydrogel and aerogel in wound healing applications.

Functionality	Hydrogels	Aerogels	Reference
Fluids absorption in wet wounds	Does not absorb fluids and cannot be used in wet wounds.	Able to absorb large amounts of fluids in wet wounds.	[145,146]
Stop hemorrhage	Not applicable.	Can be used to absorb fluid and expand to fill the wound.	[147]
Mechanical stability	Poor mechanical strength and liable to tearing easily.	Excellent mechanical strength and easy to handle.	[148]
Wounds aeration	Does not provide aeration to wounds.	The high porosity of aerogels provides suitable aeration for wounds.	[149]
Potential cytotoxicity	Relatively higher	Lower cytotoxicity.	[150]
Reliability for patients	Difficult for patients to change their dressings.	Easy for patients to change their dressings.	[151]
Cost of production	Lower cost of production.	Higher cost of production.	[152]