What type of minor connector is retentive posts, beads, or nail heads on metal bases?

What type of minor connector is retentive posts, beads, or nail heads on metal bases?

• A. Open lattice
• B. Retentive posts
• C. Mesh design
• D. Loop design

Answer: (B)

Retentive posts are a minor-connector feature that provides retention by giving the acrylic resin something to lock onto. Small posts, beads, or nail heads are built into the metal base; when the denture base material is formed, it flows around and bonds to these projections, creating undercuts that resist dislodgement during function. This is specifically a retention-focused design for the minor connector. Other minor-connector patterns like open lattice, mesh design, or loop design are chosen to manage framework strength, weight, and tissue adaptation rather than to provide this kind of post-like retention, so they don’t match the description of retentive posts.

Retentive posts are a minor-connector feature that provides retention by giving the acrylic resin something to lock onto. Small posts, beads, or nail heads are built into the metal base; when the denture base material is formed, it flows around and bonds to these projections, creating undercuts that resist dislodgement during function. This is specifically a retention-focused design for the minor connector. Other minor-connector patterns like open lattice, mesh design, or loop design are chosen to manage framework strength, weight, and tissue adaptation rather than to provide this kind of post-like retention, so they don’t match the description of retentive posts.