2. It is rigidly connected with the abutment, and does not generate any vibration force on the abutment compared with the snap ring.
3. The requirement for abutment stability is lower than that of traditional clasp, and you can also choose to loosen the teeth. By designing different cone angles for each abutment, the loose teeth are only used for support, the stable teeth are used for retention, and the loose teeth can also be fixed with splints.
4. It is more suitable for the choice of free-end (unilateral or bilateral) tooth missing restorations.
5. It belongs to a kind of fixed-dynamic combined prosthesis, which combines dental support and mucosal support on one prosthesis, which solves the distribution of occlusal force of denture and delays the absorption of alveolar ridge in the free end area. The prosthesis can always be in a stable state and play a good role through regular bottoming.
6. The denture is small in size (especially the omission or reduction of the big joint and the base of the tongue and palate), which obviously reduces the foreign body sensation and is more comfortable. At the same time, the cleaning around abutment is more convenient and thorough, which is conducive to maintaining the periodontal health of abutment.
7. Compared with metal porcelain teeth, it can meet the needs of plump and beautiful face (especially the bone defect of maxillary anterior teeth).
8. Compared with removable denture, it is in close contact with abutment and oral tissue, which greatly reduces the chance of hiding food and is not easy to produce odor.
9. Compared with other accessories, the entity has more reliable stress and longer service life.