Separated root tip formation associated with a fractured tubercle of dens evaginatus: A case report

Dental Abnormalities in Two Dental-Skeletal-Retinal Anomaly-Positive Cane Corso Dogs: A Case Series

Dental-skeletal-retinal-anomaly (DSRA) is a newly described collagenopathy in Cane Corso dogs. The causative mutation has been linked with splice defects within the melanoma inhibitory activity member 3 (MIA/3) gene that codes for the TANGO1 protein. This case series presents the first dental-related radiographic and histopathological abnormalities in two dogs with genetically confirmed DSRA. The clinical, radiological, and histological features are similar to those reported for MIA3/TANGO1 splice defects previously reported in humans and knockout mice. Common clinical features of these patients include generalized opalescent discoloration of the permanent dentition (intrinsic dyschromia), enamel defects, fractured teeth, vision loss, shortened physical stature, and orthopedic abnormalities that resulted in chronic, early-onset lameness. Intraoral radiography revealed delayed dentin deposition, evidence of endodontic disease, and dental hard tissue loss in both cases. Histopathologic findings for both cases were consistent with dentinogenesis imperfecta (DGI). DSRA exhibits autosomal recessive heritability and commercial diagnostic tests are now available. Clinicians should be aware of the etiopathogenesis, genetic inheritance and associated comorbidities in order to treat and counsel clients on the management of this condition. It is recommended that all breeding individuals be tested, and carriers be sterilized or omitted from the breeding population. This case study describes intraoral diagnoses, treatments, and follow-up of two DSRA-positive dogs.

[Phantom root as dental trauma complication in immature teeth (systematic literature and clinical cases review)]

The paper presents literature review and the analysis of three clinical cases of phantom root development. Phantom root is a rare complication occurring as a result of apical papilla detachment, usually after dental trauma. Some authors suggest regenerative endodontic procedure may contribute to phantom root development because of rude intervention in periapical tissues needed to induce apical bleeding required for intracanal blood clot formation. Phantom root is not an indication for endodontic treatment. The prognosis depends on initial root formation stage and root to crow length ratio at the time of trauma. In the majority of cases the teeth may be preserved, but continuous root development is not to be expected.