Adams Clasp, Ball Clasp, Circumferential Clasp.

By Dr. Vishaal Bhat on Tuesday 15 December 2009 with 0 comments



Milk teeth of a nine year old boy, showing too...Image via Wikipedia

Retention of an active appliance is critical to its success. Clasps are even more important than springs in determining how well a removable appliance performs clinically. As a general rule, the more active a removable appliance is to be and the greater the force applied during its use, the more clasping is required to hold it in place.

Adams Clasp: Designed to engage the MB and DB undercuts of individual posterior teeth. Does not tend to separate the teeth and has excellent retentive properties.

Ball Clasps: Major advantage: easy to fabricate. Because of their short span they are relatively stiff and unable to extend as deeply into the undercuts as an Adams clasp.

Circumferential Clasps: Major advantage: easy to keep out of the occlusal contact. Does not compare to the Adams clasp in retention and should be considered only a supporting rather than a truly retentive element.

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Category: Orthodontics Notes

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