Three-dimensional imaging for indirect-direct bonding

• Cone-beam computed tomography imaging and 3D printing are applied in a new indirect-direct bonding technique.
• Bracket bases remain clean, free of resin or cast material, until they are bonded.
• Three-dimensional imaging allows careful control of root axes.

The aim of this article is to introduce a new concept of bracket positioning with special consideration to root axes. Cone-beam computed tomography imaging and computer-aided manufacturing were used to produce stereolithographic trays for indirect-direct bonding.