Delayed Eruption of Second Molar Blocked by Impacted and Malformed Wisdom Tooth


Delayed eruption of second molar in a 13 year old female due to blockage from a malformed third molar (wisdom tooth) overlying it.


A diagnostic CBCT was done to properly diagnose the position of the second molar and its relationship to the wisdom tooth. It confirmed an overlying malformed third molar causing obstruction of the second molar. The wisdom tooth with anomalous crown morphology may be possibly an evolving odontoma arrested after formation. The treatment consisted of:

  • Removal of the malformed third molar
  • Monitoring of self-eruption of second molar over the next 1-2 years
  • Orthodontic-assisted eruption of the second molar into position if necessary