1. Enhance stability: prevents denture movement or detachment, enhances freedom of movement in daily activities.
2. Enhance durability: Resist biting force and friction, prolong the service life of denture.
3. Provide support: make the denture fit more closely to the mouth, improve comfort and prevent deformation.
4. Indirect aesthetics: Reasonable layout harmonizes with the surrounding teeth, enhancing the overall aesthetics.
5. Good air permeability: keep the mouth fresh and dry, reduce odor and bad breath.