Table 2: The advantages and disadvantages of natural polymers [72].

S/NAdvantagesDisadvantages

1No problem with toxicity or foreign body responseA major issue is immunological reaction. Body’s immune system recognizes foreign material and tries to destroy it
2Can function biologically at molecular level, not just macroscopic levelHigh natural variability
3If desired, natural degradation can occur in the body via natural enzymes. Can also add cross-links to make less degradableStructurally more complex than traditional materials. Technological manipulation is more elaborate