Choosing the Correct Implant

Parallel Implants

Cylindrical with a uniform diameter, offering ease of placement and good stability in dense bone, but can have less stability in softer bone and higher micromovement risk.

 

Tapered Implants

Conical shape, enhancing primary stability in soft or low-density bone and suitable for immediate placement, though they can increase the risk of bone compression and require precise placement.

 

Thread Designs and Force Distribution:

• Square/Buttress Threads: Create compressive forces favourable for bone stability and growth, minimizing shear forces.
• V-Shape and Reverse Buttress Threads: Produce a mix of compressive, tensile, and shear forces, offering versatility but potentially less favourable for bone preservation compared to square threads.
• Parallel Implants: Generate more shear forces, which can be less favourable for bone formation, particularly in low-density bone.
• Tapered Implants: Generate compressive forces, promoting bone formation and stability, particularly beneficial in soft bone.

 

Summary

Selecting the correct implant involves considering the specific clinical situation. Tissue-level implants are preferred for posterior regions due to their ease of maintenance, while bone-level implants are ideal for anterior areas where aesthetics and precise soft tissue management are crucial. Material choices, restorative connections, implant shapes, and thread designs all impact the implant's success, with each option offering unique benefits and considerations for optimal patient outcomes.