Intracoronal attachment

Intracoronal attachment

Definition:  As the name suggests, a matrix component part housed within the coronal tissue of the abutment tooth.

Indications

• As a resilient intracoronal attachment in the placement of a removable bounded saddle prosthesis .

• As a nonresilient intracoronal attachment in the fixed movable design of a fixed prosthesis.

Advantages • The contour of the abutment tooth is not altered as in the extracoronal types. • In fixed prosthodontics this attachment can overcome the problem of nonparallel abutments.

Disadvantages

• The size of this attachment may result in it encroaching upon the pulp chamber, if the tooth is small or pulpal resorption has not occurred.

• Wear of the component parts of a removable prosthesis is inevitable and therefore reactivation is required.

• Adequate preparation of the tooth is required where the component part is to be housed.

Procedure The crown is prepared with the matrix component enclosed within its cast structure. This has to be paralleled to the other portion of the second abutment tooth.

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Category: Dental, Prosthodontics