Other Orthodontic Appliances![]() Rapid Palatal Expander (RPE)The banded palatal expander consists of two metal rings (bands) around the permanent maxillary molars and an expansion mechanism that connects both rings. The appliance is used to do an orthopedic movement, separating the two halves of the upper maxilla, allowing new bone to form in the middle or mid palatal suture. It is used to correct posterior crossbites, narrow upper arches and also can create more space for the eruption of permanent teeth. ![]() Trans-Palatal Arch (TPA)The trans-palatal arch consists of two bands around the upper permanent molars and a wire connecting them. The wire follows, but does not touch the roof of the mouth and is used to maintain the position of the molars or to de-rotate them to improve the bite. ![]() Nance ApplianceThe Nance appliance is a space maintainer that consists of two bands around the permanent maxillary molars and a wire with an acrylic button that touches the roof of the mouth behind the upper front teeth. The appliance is used to maintain the space needed for the eruption of the upper permanent teeth and also to maintain the position of the upper molars during the movement of other teeth. ![]() Lower Lingual Holding Arch (LLHA)The lingual holding arch is another space maintainer that consists of two band on the lower molars and a wire that sits on the lingual surfaces of the lower anterior teeth. The appliance is used to maintain the space needed for the eruption of the lower permanent teeth and also to maintain the position of the lower molars during the movement of other teeth. |