Which factor contributes to successful healing of retained root tips?

The vitality of the pulp within a fractured tip plays a significant role in the successful healing of retained root tips. When the pulp is vital, it indicates that the tissue remains alive and has the potential for regeneration and healing. The health of the pulpal tissue is crucial, as it can promote the formation of reparative dentin and support the overall healing process through its ability to respond to injury. Maintaining blood supply and innervation in the pulp promotes the release of growth factors and other healing mediators, which are vital for tissue repair.

In contrast, factors such as extensive mobility of the fractured root, incomplete wound closure, and the presence of complications can negatively affect healing. Excessive mobility can disrupt the healing environment, while incomplete closure may lead to infection or other complications, making a healthy vital pulp the most critical factor for successful healing.