Related Experiment Video
Updated: Sep 26, 2026

Establishment of a Murine Pulp Exposure Model with a Novel Mouth-Gag for Pulpitis Research
Published on: October 27, 2023
Histological evaluation of teeth with hyperplastic pulpitis caused by trauma or caries: case reports
M K Calişkan1, F Oztop, G Calişkan
1Department of Endodontology, School of Dentistry, Ege University, Izmir, Türkiye. caliskan@dishekimligi.ege.edu.tr
Aim:
The purpose of this histological study was to examine teeth with hyperplastic pulpitis caused by trauma or caries.
Summary:
The pulp tissue of one young permanent incisor with a complicated crown-root fracture and a hyperplastic pulpitis, which had been contaminated with oral microflora for 40 days, and pulp polyps from four permanent first molars whose crowns were destroyed by extensive caries were prepared for standard histological examination. Histologically, normal pulp tissue organization was observed in the tooth with a complicated crown-root fracture in the cervical radicular region. Irregular calcification was seen in the coronal and radicular portion of the pulp in the four carious teeth with pulp polyps. Radicular pulp tissue in the middle and apical third of root canals beneath irregular calcification showed intensive fibrosis but was free from inflammatory cells.
Key Learning Points:
Hyperplastic pulpitis is a type of irreversible chronic open pulpitis. Young permanent teeth with hyperplastic pulpitis caused by trauma or caries have a great inherent defensive capacity to heal.
More Related Videos
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...
