DOI: 10.36347/sjds.2021.v08i09.003

Pages: 284-287

In modern orthodontics, several types of designs for bone anchored expansion appliances have been developed with the objective to increase the amount of skeletal expansion with rapid palatal expansion. In the present review, the skeletal and dental effects of rapid palatal expansion have been evaluated immediately following expansion and in the long-standing interval following expansion. The effects of conventional rapid palatal expansion appliances are compared with bone anchored maxillary expansion appliances and tooth-bone anchored maxillary expansion appliances. Temporary Anchorage Devices (TADs), or mini-screws, or mini-implants are used for the insertion of bone anchored and tooth-bone anchored maxillary expansion appliances. These lead to higher forces on the bone while expansion is undertaken and consequently more orthopedic effects. This article will discuss how the modern bone anchored expansion appliance used in modern orthodontics compare to conventional rapid palatal expansion appliances.