Related Experiment Video
Updated: Sep 26, 2026

Systematic Assessment of Mammalian Skull Specimens for Dental and Temporomandibular Joint Pathology
Published on: August 22, 2022
An investigation of root-fractured permanent incisor teeth in children
Laura Feely1, Iain Campbell Mackie, Tatiana Macfarlane
1Unit of Paediatric Dentistry, University Dental Hospital, Higher Cambridge Street, Manchester M15 6FH, UK.
Abstract:
- The aim of this retrospective study was to determine the type of healing which occurred in root-fractured permanent incisor teeth in children. The objectives were to determine whether gender, age, stage of root development or location of the fracture affected the healing type. The method involved careful scrutiny of clinical records and radiographs of children who attended a unit of paediatric dentistry in a dental hospital. Relevant information was entered onto a data collection sheet. The results were tabulated and analysed by the chi2-tests using the SPSS statistical package. The results are based on 34 root-fractured teeth in 33 children aged 8-15 years. Root development was incomplete in 27 of the root-fractured teeth and complete in seven teeth. A good healing outcome was seen in 27 (79.4%) of the teeth and poor healing in 7 (20.6%). The only factor which was found to be statistically significantly related to healing was the stage of root development. It can be concluded that root-fractured teeth with immature roots have a better chance of showing good healing than teeth with mature roots.
Related Concept Videos
Tooth Anatomy
The Crown, Neck, and Root
The visible part of the tooth is referred to as the crown. It's covered by enamel, the hardest substance in the human body. The crown is uniquely shaped for each type of tooth, allowing for different functions such as cutting, tearing, or grinding food.
Teeth
In the bud stage, the tooth germ (an aggregation of cells) starts to form in the developing jawbone. During the cap stage, the tooth germ differentiates into enamel organ, dental papilla, and dental sac, which will later develop into the tooth's enamel, dentin and...