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Four forms of rod-shaped snap rings: U-shaped, T-shaped, I-shaped, L-shaped

by:Tronshal     2022-02-28
Rod snap rings are made by casting and come in various variants such as U-shape, T-shape, I-shape, L-shape, etc. UUUU-shaped snap ring: It is in point contact with the undercut area of u200bu200bthe buccal surface of the abutment. It is suitable for the abutment with a long crown. The observation line is biased towards the eye, and there is an appropriate undercut at the corner of the mesial or distal line. TTTT-shaped clasp: It is the most commonly used form of rod clasp, with good elasticity, and is often used for a removable partial denture with a missing distal extension, but this type of clasp tends to accumulate food and expose metal. IIII-shaped clasp: It is in point contact with the undercut area of u200bu200bthe buccal surface of the abutment, with good elasticity, less exposed metal, more beautiful, and no food impaction, but there must be an opposing arm on the lingual side. LLLL-shaped snap ring: It is in point contact with the undercut area of u200bu200bthe buccal surface of the abutment, with good elasticity and easy cleaning. There are many shapes and types of rod-shaped snap rings, and they are widely used. Its main advantages are good elasticity, small contact surface with the abutment, strong retention, little damage to the abutment, less exposed metal, beautiful appearance, and the abutment can be maintained. Physiological exercise. Its main disadvantage is that the stabilizing effect is not as good as that of the annular snap ring, it is easy to accumulate food, and it is not easy to repair after damage.
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