Final answer:
A healing collar is used in the endosteal implant procedure to guide tissue healing around the implant. It shapes the space in the gums for the future tooth prosthesis, and is related to the periosteum's role in bone repair.
Step-by-step explanation:
A "healing collar" is used in the endosteal implant procedure. This component acts as a guide for tissue healing around the implant in the jawbone. The term 'healing collar' specifically refers to a small cylindrical device that is attached to the implant after the surgical site has had an initial period of healing. The primary purpose of the healing collar is to shape and maintain the space in the gingival tissue (gums) for the future attachment of the artificial tooth (prosthesis).
The subject of this question revolves around various types of dental implants, specifically the role of healing collars in the context of these implant surgeries. The periosteum, which plays a crucial role in the process of bone repair, is a layer of connective tissue that covers bones and is involved in the healing around the endosteal implants due to the formation of new bone tissue by osteoblasts.