Mapping intraoral photographs on virtual teeth model.

Area of Science:

• Digital dentistry
• Aesthetic dentistry
• Computer-aided design/computer-aided manufacturing (CAD/CAM)

Background:

• Tooth shade significantly impacts patient satisfaction in aesthetic dentistry.
• Current digital workflows lack color information in 3D virtual teeth models.
• Accurate tooth shade recording is essential for creating aesthetically pleasing smiles.

Purpose of the Study:

• To describe a method for mapping color information from intraoral photographs onto 3D virtual teeth models.
• To enable the creation of visually accurate 3D dental models for aesthetic applications.

Main Methods:

• Intraoral photographs were captured using a calibrated digital SLR camera.
• 3D virtual teeth models were generated using intraoral or model scanners.
• Image-to-geometry registration was employed to map 2D photograph color onto 3D models by identifying corresponding feature points.

Main Results:

• The proposed method successfully mapped color information from 2D intraoral photographs onto 3D virtual teeth models.
• Resultant 3D models are in an open file format compatible with dental CAD/CAM software.
• RGB color information and registration error data were retrievable from the generated models.

Conclusions:

• Image-to-geometry registration is an effective technique for transferring 2D color data to 3D dental models.
• The method is versatile, applicable across different scanning systems and can utilize stone casts or intraoral scans.
• This facilitates the creation of realistic, colored 3D virtual teeth models.