Clinical Scorecard: Feasibility Assessment of Dental Root Reconstruction for Implant Placement Planning

At a Glance

Key Highlights

• Implant positioning depends on bone supply, soft tissue conditions, and prosthetic restoration position.
• Cone-beam computed tomography (CBCT) combined with digital planning software enables 3D visualization of anatomy for implant placement.
• Statistical shape modeling (SSM) can reconstruct missing dental root morphology from crown surface scans to aid implant alignment.

Guideline-Based Recommendations

Diagnosis

• Use CBCT imaging to visualize osseous and adjacent anatomical structures in 3D for implant planning.
• Obtain digitized plaster cast models showing dental crowns without artifacts for accurate surface morphology.
• Include patients with fully erupted teeth and harmoniously formed dental arches for reliable SSM application.

Management

• Integrate SSM-based dental root reconstruction into implant planning software to estimate missing tooth axes.
• Use computer-assisted planning and guided surgery to transfer digital implant positions accurately into the oral cavity.
• Manufacture surgical guides via 3D printing based on virtual implant planning data.

Monitoring & Follow-up

• Ensure high-quality CBCT scans without motion artifacts and correct patient positioning for accurate 3D segmentation.
• Verify consistency between plaster cast models and CBCT scans to avoid misalignment or orthodontic changes.
• Review implant positioning intraoperatively using surgical guides derived from digital planning.

Risks

• Inaccurate implant positioning due to poor imaging quality or incomplete anatomical data.
• Exclusion of patients with missing teeth (except wisdom teeth), misaligned teeth, or incomplete orthodontic treatment to avoid unreliable SSM predictions.
• Potential errors if dental crowns are not fully erupted or if dentures/implants replace natural teeth.

Patient & Prescribing Data

Adults aged 18 years or older with complete natural dentition (excluding wisdom teeth) and available CBCT and plaster cast data

SSM can predict dental root morphology to assist implant axis orientation, potentially improving manual implant alignment and surgical outcomes

Clinical Best Practices

• Perform CBCT scans with appropriate field of view and slice thickness to capture full maxilla and mandible anatomy.
• Digitize plaster cast models contemporaneously with CBCT to ensure accurate crown morphology representation.
• Apply SSM to reconstruct missing root anatomy only in patients meeting strict inclusion criteria to ensure model reliability.
• Use combined 3D datasets integrating anatomy and prosthetic planning for comprehensive implant positioning.
• Employ 3D-printed surgical guides based on virtual planning to enhance surgical precision.

References

• STROBE checklist for observational studies