Related Experiment Video
Updated: Aug 17, 2026

The Mouse Round-window Approach for Ototoxic Agent Delivery: A Rapid and Reliable Technique for Inducing Cochlear Cell Degeneration
Published on: November 26, 2015
Retrotympanic odontoma
Abstract:
The clinical and histologic features of the second reported case of retrotympanic odontoma, which clinically presented as a cholesteatoma, are described. Origin from the posterior extension of the dental lamina is postulated. The dental lamina, the thickened oral ectoderm which outlines dental structures, is incorporated subendodermally in the lateral outpouching of the first pharyngeal pouch which produces the middle ear cavity. Histologically the odontoma was "complex," containing a haphazard arrangement of cementum, dentin, dental follicle and proliferating dental lamina, without the formation of recognizable teeth.
More Related Videos
Related Concept Videos
Cranial Bones: Lateral View
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...
Anatomy of the Ear
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.

