What is the primary factor contributing to good retention in a full veneer crown?

The primary factor contributing to good retention in a full veneer crown is a long path of insertion. A longer path of insertion allows for a greater area of contact between the crown and the tooth structure, increasing the resistance to dislodgement. This is particularly important because it enhances the mechanical retention as well as the adhesive bonding surface area when dental cements are used.

In the context of dental restorations, a longer path of insertion minimizes the potential for rotation and provides a stable foundation, leading to greater retention over time. Adequate tapering and the design of the crown should also be considered; however, the emphasis on the path of insertion highlights its crucial role in securing the crown effectively.

While tapering also affects retention, it is more focused on the crown's resistance to dislodgment during lateral movements rather than the overall retention achieved through a longer path of insertion.