Which condition is characterized by defective dentin formation accompanied by pulp exposure?

The condition characterized by defective dentin formation accompanied by pulp exposure is Dentinogenesis type III. This disorder is a part of the group of dental conditions known as dentinogenesis imperfecta, which affect the development of dentin – the hard tissue beneath the enamel of the teeth.

Dentinogenesis type III is specifically recognized for its distinctive features, such as the early formation of pulp exposure and abnormal crown morphology. Teeth affected by this type often present with a significantly thin layer of dentin and are more susceptible to fracture and caries, leading to increased risk of pulp exposure.

This condition not only compromises the protective function of dentin but also leads to significant aesthetic and functional tooth problems. The pulp's exposure can result in pain and requires careful management to preserve tooth vitality or address necessary restorative needs. Understanding these characteristics helps differentiate it from other types of dentin dysplasia and conditions affecting dental tissues.