First, the distal crown of the second deciduous molar was sliced using a high-speed bur, allow- ing mesial drift of the first permanent molar.
After about 10 weeks, the tooth was hemisect- ed to remove the distal half of the crown and root.
The pulp was removed, and calcium hydroxide was injected to seal off the tooth.
After about six months, the mesial crown and root were extracted.
