headgear is an orthodontic appliance worn partly outside the mouth to apply gentle pulling forces to the teeth and jaws. It is most commonly used in orthodontics alongside braces or other appliances. It connects to intraoral attachments (often molar bands) and transfers force through straps around the head or neck. Its goal is to guide tooth movement and, in some patients, influence jaw growth while the face is still developing.
A distal shoe is a fixed pediatric space maintainer used after early loss of a baby molar. It includes a small extension that sits slightly under the gum to guide a permanent molar as it erupts. It is most commonly used when a primary second molar is lost before the first permanent molar has come in. The goal is to help preserve space so nearby teeth are less likely to drift into the extraction area.
A lingual holding arch is a fixed orthodontic space maintainer commonly used in the lower jaw. It is a thin metal wire that sits behind the lower front teeth (on the tongue side) and connects to bands on the back molars. Its main role is to help keep teeth in position while a child is growing and permanent teeth are erupting. It is most often used during the mixed dentition stage, when both baby teeth and permanent teeth are present.
band-and-loop is a fixed dental space maintainer most commonly used in children. It typically consists of a metal band around a tooth and a wire “loop” that holds space for a tooth that has not erupted yet. It is usually placed after early loss of a primary (baby) tooth to help guide normal eruption and alignment. It is used in pediatric dentistry and general dentistry when space maintenance is needed.
A space maintainer is a dental appliance used to hold open a gap in the mouth. It is most commonly used in children after a baby tooth is lost earlier than expected. Its goal is to keep nearby teeth from drifting into the empty space. It can be fixed (cemented) or removable, depending on the design and case.
A Nance holding arch is a fixed orthodontic appliance used to help maintain space in the upper jaw (maxilla). It typically consists of bands on the upper first molars connected by a wire and an acrylic “button” that rests against the palate. It is most commonly used in mixed dentition and early orthodontic treatment to help control molar movement. It is sometimes described as an “anchorage appliance,” meaning it helps resist unwanted tooth shifting.
TPA is a shorthand term sometimes used in restorative dentistry for a tooth-colored, resin-based material placed in thin layers. It is commonly discussed alongside flowable and injectable composite resins used for sealing, lining, and small repairs. TPA materials are typically light-cured (hardened with a dental curing light) after placement. Meaning and usage can vary by clinician, region, and manufacturer.
A transpalatal arch is an orthodontic appliance that connects the upper left and upper right molars across the roof of the mouth (the palate). It is most often made from a shaped metal wire attached to bands or tubes on the back teeth. Clinicians use it to help control molar position and support orthodontic tooth movement. It is commonly seen during braces treatment and sometimes during space-management or stabilization phases.
A W-arch is a fixed orthodontic appliance made from a shaped metal wire that looks like the letter “W.” It is most commonly used in the upper jaw (maxilla) to help widen the dental arch. It typically attaches to bands on the back teeth and applies gentle spring-like force. Orthodontists often use it for developing arch width and addressing certain types of crossbite.
A quad-helix is a fixed orthodontic appliance used to gently widen a dental arch, most commonly the upper (maxillary) arch. It is made from a springy wire with four small loops (“helices”) that help deliver light, continuous expansion forces. Dentists and orthodontists often use it in children or adolescents to correct crossbites and improve arch shape. It is typically attached to molar bands, so it stays in place between visits.