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Influence of short implants geometry on primary stability.

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Double thread short implants offer superior primary stability (PS) in low-quality D3 and D4 bone compared to single thread designs. This finding is crucial for improving implant success rates in challenging bone conditions.

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Area of Science:

  • Dental Implantology
  • Biomaterials Science
  • Orthopedic Surgery

Background:

  • Designing short implants for optimal primary stability (PS) in low-quality bone is critical.
  • This study compares the PS of double-thread versus single-thread short implants.

Purpose of the Study:

  • To evaluate and compare the primary stability of double-thread and single-thread short implants in low-quality bone.
  • To determine which implant design offers superior stability in D3 and D4 bone types.

Main Methods:

  • Fifty short implants (30 single-thread, 30 double-thread) were placed in bovine ribs.
  • Primary stability was measured using implant stability quotients (ISQ) and periotest values (PV).
  • Bone quality was assessed using Hounsfield Units (HU), with analysis focused on D3 (350-850 HU) and D4 (150-350 HU) bone.

Main Results:

  • Double-thread implants showed significantly higher ISQ and lower PV in both D3 and D4 bone compared to single-thread implants (P<0.005 for D3, P<0.0001 for D4).
  • Statistically significant differences were observed for both implant stability quotient and periotest values between the two designs across different bone qualities.

Conclusions:

  • Double-thread short implants demonstrate enhanced primary stability in low-quality bone (D3 and D4) compared to single-thread designs.
  • The findings suggest that double-thread design is advantageous for improving implant anchorage in compromised bone.