Fig 1.
Panoramic radiograph of a 14-year-old girl (with no history of dental trauma) presented with root dilaceration of #9, unerupted #8 with enlarged follicle, unerupted #7 and #10 with delayed root development; as well as an impacted #22.
Table 1.
Prevalence and percentages of different types of unerupted permanent incisors.
Fig 2.
a. Upper anterior occlusal view of a 12-year-old girl who presented with a crown and root dilacerations of #8 as well as positive history of traumatic injury to the primary incisor when she was 4-year-old. b. Intra-operative photograph of the same subject which shows the orientation of the dilacerated crown. c. Postoperative photograph of the same subject with the extracted #8 and its associated tooth follicle.
Fig 3.
a. Periapical radiograph of an 8-year-old boy who presented with an unerupted #8 due to the inverted mesiodens between #8 and #9. b. Frontal view of the same subject with erupting #7 and #8 after one month of surgical removal of the inverted mesiodens between #8 and #9. c. Occlusal view of the same subject showing talon’s cusps and dens invaginatus on palatal surface of erupted #10 (black arrow) after six months of surgical removal of the inverted mesiodens between #8 and #9.
Table 2.
Identified causes of unerupted permanent incisors.
Table 3.
Complications associated with the occurrence of unerupted permanent incisors.
Fig 4.
A 9 years old male subject who initially presented on 15th January 2011, with malformed and delayed root development on #10 (white arrow).
#11 (black arrow) had erupted in advance as compared to #10 on a review dated on 1st August 2012. #10 had finally erupted clinically on the subsequent review dated on 21st November 2012 (after 22 months of observation).
Fig 5.
Panoramic radiograph of an 8-year-old boy showing the complications associated with the occurrence of an unerupted and ectopic #26.
Fig 6.
Panoramic radiograph of an 8-year-old boy showing the unerupted #10 with delayed root development (white arrow), which also acted as an obstruction to the eruption of #9 (black arrow) and #11 (dotted arrow).