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Prepackaged collections (either custom or standard) of devices and supplies needed for providing retention and/or stabilization of dental restorations. These kits usually include retention pins of several sizes (e.g., 2.0, 2.5, and 3.0 mm/0.08, 0.1, 0.12 inch), a variety of dental burs and drills, and a tool with a socket that provides a flat surface for engaging and manipulating the pin (i.e., a manual pin driver). A cylindrical hole with a beveled top is predrilled in the tooth to receive the threaded end of the pin; the pin provides at the other end a surface for securely attaching the restoration (e.g., a reconstructed coronal portion to the tooth). Sometimes unthreaded pins with a diameter larger than that of the accommodating hole are fixed by friction alone. Dental retention procedure kits and trays are used for permanent insertion of pins in the healthy dentin, providing retention and/or stabilization of dental restorations. They are used mainly in dental offices.
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