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Accuracy of Static Computer-Assisted Implant Placement in Narrow Ridge by Novice Clinicians.

Jaafar Abduo1, Radhwan Himmadi Hasan2, Douglas Lau1

  • 1Melbourne Dental School, Melbourne University, Melbourne, Victoria, Australia.

European Journal of Dentistry
|March 12, 2025
PubMed
Summary

Fully guided (FG) implant placement offers superior accuracy for novice clinicians compared to pilot-guided (PG) and freehand (FH) methods. FH placement significantly compromises bone and prosthesis retention.

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Area of Science:

  • Dental Implantology
  • Surgical Accuracy
  • Prosthodontics

Background:

  • Novice clinicians face challenges in achieving accurate implant placement, especially in narrow anterior ridges.
  • Guided surgery techniques aim to improve implant positioning and clinical outcomes.

Purpose of the Study:

  • To compare the accuracy and clinical impact of fully guided (FG), pilot-guided (PG), and freehand (FH) implant placement by novice clinicians in a narrow anterior ridge model.
  • To assess peri-implant bone dimensions and prosthesis restorability based on placement technique.

Main Methods:

  • A maxillary surgical model with a narrow anterior ridge was used.
  • Fifteen novice clinicians performed implant placements using FG, PG, and FH techniques.
  • Accuracy was measured by deviations in angle, vertical/horizontal platform, and apex position.
  • Clinical impact was evaluated by peri-implant bone and prosthesis retention.

Main Results:

  • Fully guided (FG) placement demonstrated significantly higher accuracy than pilot-guided (PG) and freehand (FH) techniques in all measured parameters.
  • PG placement was more accurate than FH regarding horizontal platform deviation.
  • All FG implants were successfully restored. PG and FH techniques showed higher rates of peri-implant bone complications and compromised prosthesis restorability.

Conclusions:

  • Fully guided (FG) implant placement provides the highest accuracy for novice clinicians in narrow anterior ridges, followed by PG and FH.
  • Freehand (FH) placement resulted in significant compromises to peri-implant bone and prosthesis retention mechanisms.