The Influence of Implant Placement Angulation on Biomechanical Stability In Vitro Study

Area of Science:

• Biomaterials Science
• Dental Implantology
• Biomechanics

Background:

• Dental implant angulation is a critical factor influencing biomechanical stability and long-term success.
• Understanding the impact of angulation on primary stability is essential for optimizing implant placement strategies.

Purpose of the Study:

• To evaluate the influence of different dental implant angulations (0°, 15°, and 30°) on primary stability using an in vitro model.
• To provide insights into optimal implant placement for enhanced biomechanical stability.

Main Methods:

• 30 implants were placed in synthetic bone blocks (Type 2 density).
• Implants were grouped by angulation: 0°, 15°, and 30° (n=10 each).
• Insertion torque (IT) and implant stability quotient (ISQ) were measured; cyclic loading (100 N, 500,000 cycles) was applied.

Main Results:

• Mean IT: 45 Ncm (0°), 35 Ncm (15°), 25 Ncm (30°).
• Initial ISQ: 75±2 (0°), 68±3 (15°), 60±5 (30°).
• Post-loading ISQ remained highest for 0° angulation (73±2) vs. 15° (65±4) and 30° (57±6), with significant differences (P<0.05).

Conclusions:

• Dental implant angulation significantly impacts biomechanical stability.
• 0° angulation demonstrated superior primary stability compared to 15° and 30°.
• Clinicians should consider angulation for optimizing outcomes, especially in limited bone situations.