A Modified Hyrax-Type Expander Is Effective for Distal Bodily Movement of the Maxillary First Molar

Impaction and eruption disturbance of permanent teeth are frequently encountered in orthodontic practice. The canine play an important role both functionally esthetically. Eruption a maxillary canine, if left untreated, can cause not only disturbed jaw movement esthetic problems, but also root resorption adjacent teeth, thus should be diagnosed treated appropriately. In this report, we present case patient with the which second molar was extracted first distally moved Hyrax-type expander (Veltri Monolateral Screw®; Leone, Firenze, Italy) designed to enable distal unilateral order create space for resulting smooth alignment dental arch. Furthermore, third aligned achieve good occlusal relationship without reducing number teeth.