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Volumetric Analysis of Alveolar Bone Defect Using Three-Dimensional-Printed Models Versus Computer-Aided Engineering.

Fengzhou Du1, Binghang Li, Ningbei Yin

  • 1*Department of Cleft Lip and Palate †Digital Simulation Center ‡Research Center, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.

The Journal of Craniofacial Surgery
|January 4, 2017
PubMed
Summary

Accurately measuring bone graft volume for alveolar defects is crucial. Both 3D printing and computer-aided engineering (CAE) offer precise preoperative volume assessment, validating their use in reconstructive surgery.

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Area of Science:

  • Oral and Maxillofacial Surgery
  • Biomedical Engineering
  • Regenerative Medicine

Background:

  • Accurate graft volume determination is critical for successful alveolar bone defect repair.
  • Preoperative planning enhances surgical outcomes in reconstructive procedures.

Purpose of the Study:

  • To compare the accuracy of two advanced preoperative volume measurement techniques: 3D printing and computer-aided engineering (CAE).
  • To evaluate the efficacy of the mirror-reverse technique in CAE for graft volume calculation in unilateral alveolar cleft patients.

Main Methods:

  • Computed tomographic data from ten unilateral alveolar cleft patients were utilized.
  • Simulated bone grafts were created using 3D printing, with volume measured by water displacement.
  • Graft volumes were also calculated using CAE software employing a mirror-reverse technique.

Main Results:

  • The average volume measured by 3D printing was 1.52 mL, while CAE calculated 1.47 mL.
  • The difference between the two methods ranged from -0.18 to 0.42 mL.
  • Statistical analysis (paired Student t test) revealed no significant difference between the volumes obtained from 3D printing and CAE.

Conclusions:

  • Computer-aided engineering (CAE) using the mirror-reverse technique is as accurate as 3D-printed models for estimating bone graft volume in unilateral alveolar cleft repair.
  • These findings support the clinical application of both 3D printing and CAE in planning and executing alveolar bone defect reconstructions.