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[Nonradiological methods for implant surgical guide accuracy measurement].

Sheng-Jia Ye1, Shi-Jie Bao, Qu-Yi Chen

  • 1Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine; College of Stomatology, Shanghai Jiao Tong University; National Center for Stomatology; National Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of Stomatology. Shanghai 200011, China.

Shanghai Kou Qiang Yi Xue = Shanghai Journal of Stomatology
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PubMed
Summary

This study found that CAD/CAM-based evaluation accurately assesses dental implant placement accuracy, reducing patient radiation exposure compared to traditional radiology methods.

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Area of Science:

  • Dental Implantology
  • Computer-Aided Design/Computer-Aided Manufacturing (CAD/CAM)
  • Medical Imaging

Background:

  • Static computer-navigated implantology utilizes surgical guides for precise placement.
  • Traditional verification methods often involve radiological imaging, such as cone-beam computed tomography (CBCT).
  • Evaluating the accuracy of these non-radiological methods is crucial for clinical application.

Purpose of the Study:

  • To assess the accuracy of static computer-navigated dental implantations using surgical guides.
  • To compare a non-radiological evaluation method with traditional radiological verification (CBCT).

Main Methods:

  • Fifteen resin models underwent 30 template-guided implantations with planned paralleled bone-level implants.
  • Postoperative implant positions were analyzed using both CAD/CAM (intraoral scanner) and CBCT methods.
  • Deviations were quantified using Geomagic Studio 2013 software, with statistical analysis performed using SPSS.

Main Results:

  • CAD/CAM-based evaluation showed a mean insertion axis deviation of 1.134° and mean horizontal shoulder/apex deviations of 0.447 mm and 0.557 mm.
  • CBCT measurements indicated a trend toward greater deviations when directly compared.
  • No significant difference was found in distance deviation measurements between the two assessment methods.

Conclusions:

  • CAD/CAM-based evaluation systems offer precise and effective assessment of implant accuracy.
  • This non-radiological approach significantly reduces patient radiation exposure.
  • The CAD/CAM system is suitable for clinical evaluation of computer-navigated implantations.