Types of Grafts

The ideal graft to correct dorsal depressions would exhibit the following qualities: (1) host tolerance, (2) remain unaltered over time, (3) easily carved or molded, (4) no transillumination or discoloration of supervening tissues, (5) pliable, and (6) easily obtainable.

Grafts can be classified as autologous grafts (derived from the host's own tissues), homologous grafts (derived from another individual of the same species), heterologous or xenografts (derived from a different species), and alloplastic or synthetic implants.

Biological materials are called grafts. These living or nonliving tissues are incorporated into the host tissues or are completely replaced by the host tissues. Synthetic or alloplastic materials are synthetic organopolymers that are generally well tolerated by the host's tissues. Synthetic materials are called implants. They retain their characteristic composition within the tissues. Although their structure may be invaded by host tissues, the implant structures are neither altered nor removed by the host.2

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