Brass wire ligation for treatment of the ectopic eruption of the mandibular second molar: a case report.

Ectopic eruption of the second permanent molar is a tooth replacement disorder during adolescence. If not treated in time, it can cause hard tissue of the adjacent first molar resorption, early tooth loss, decreased chewing efficiency, and other serious malocclusions. Timely detection and treatment of ectopic eruption of the second permanent molar are of great significance in preventing malocclusions in adolescents and establishing normal occlusion relationships.

Exosomes from human umbilical cord mesenchymal stem cells and human dental pulp stem cells ameliorate lipopolysaccharide-induced inflammation in human dental pulp stem cells.

Objective: The aim of this study was to evaluate the effects of exosomes derived from human umbilical cord mesenchymal stem cells (hUCMSCs-Exo) and human dental pulp stem cells (hDPSCs-Exo) on lipopolysaccharide-induced inflammation in human dental pulp stem cells.

Methods: Exosomes were extracted from the supernatant of human umbilical cord mesenchymal stem cells and human dental pulp stem cells. Lipopolysaccharide was used to establish the inflammation model in human dental pulp stem cells.