DEFINITION

It is a small piece of metallic wire, a part of which one anchors in the dentinadel teethes for diverse procedures and on other one, which stands out of the dentin, the obstruction material is placed, remaining included in him and serving as system of retention or anchoring. The translation of the term "pin" is "a pin".

SYMPTOMS

The pins place themselves when it is necessary to increase the retention in an obstruction or reconstruction.

SKILL

According to the procedures in the one that they hold to the dentin three types of pins differ: cemented, of friction and roscados. The most used skill is that of the pins roscados. After the achievement of the cavity that is going to lodge the obstruction, thread the pin in the dentin carving previously a bed of slightly minor diameter.

COMPLICATIONS

The most common complication is the perforation to the pulp or to the space periodontal.

Other more infrequent complications are:

• imbalance,
• loosening,
• difficulty or weakening of the restoration (filling).

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