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Extra coronal OT CAP castable attachments are used in combined prostheses, frames, connecting bars on natural teeth, roots and implants.
In prosthetic plans that require a rigid structure with milling and adequate counter attachments, they function as a stabilizing retentive coupling.
In resilient prostheses without milling, they function with a cushon effect, like a shock absorber, do to the flattened head of the sphere and to the retentive elastic caps.
In addition it is possible to control the seal by applying the most appropriate colored cap for the seal desired.
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