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Related Experiment Video

Updated: Mar 8, 2026

Designing CAD/CAM Surgical Guides for Maxillary Reconstruction Using an In-house Approach
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A novel conversion method for radiographic guide into surgical guide.

Yao-Te Peng1,2, Chung-Chih Tseng3, Yi-Chun Du4

  • 1Department of Biomedical Engineering, National Cheng Kung University, Tainan City, Taiwan.

Clinical Implant Dentistry and Related Research
|January 13, 2017
PubMed
Summary

A new method accurately converts radiographic guides to surgical guides using geometric conversion (GCM). This technique shows comparable accuracy to Stereolithography (SLA) for dental implant placement.

Keywords:
computer-aided design and manufacturingdental implantdental surgical guidegeometric projection methodprecision error

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Area of Science:

  • Dental Implantology
  • Surgical Guide Technology
  • Medical Device Innovation

Background:

  • Developing accurate surgical guides is crucial for successful dental implantology.
  • Existing methods for creating surgical guides can be complex and costly.

Purpose of the Study:

  • To introduce and evaluate a novel method for converting radiographic guides into surgical guides using Geometric Conversion Method (GCM).
  • To assess the accuracy and stability of the GCM compared to the Stereolithography (SLA) method in dental implant procedures.

Main Methods:

  • Radiographic guides were modified with index rods for the GCM.
  • In vitro tests on dental models compared GCM with SLA for implant placement accuracy.
  • In vivo clinical trials on edentulous subjects evaluated the GCM surgical guide's performance.

Main Results:

  • In vitro analysis showed no significant difference in angulation or precision error between GCM and SLA.
  • In vivo tests demonstrated successful implant placement using GCM guides.
  • Three-dimensional deviations for GCM guides were 1.03±0.27 mm (head), 1.17±0.24 mm (apex), and 1.37°±0.21° (angulation).

Conclusions:

  • The GCM offers an accurate and stable alternative for converting radiographic guides to surgical guides.
  • This novel method demonstrates comparable or superior performance to existing technologies like SLA.