MAXILLARY EXPANSION APPLIANCE
MEA (Maxillary Expansion Appliance) or Palatal Expander is done when the upper jaw is too narrow relative to the lower jaw leading to a posterior crossbite. Maxillary expansion is used to correct crossbites and also will create more space for crowded teeth. The expander appliance is attached to the molar teeth and is usually worn for 4-6 months. The appliance is widened by placing a key into the appliance and turned once per day. The expansion is monitored every 2-3 weeks to make sure the expansion is progressing properly. After the expansion is complete the expander is typically left in place for 12 weeks for the palatal bones to heal and stabilize.
BLUE GRASS APPLIANCE
The Blue Grass Appliance is a counter-conditioning device that is particularly useful in the mixed dentition stage of development to correct an oral habit. A teflon roller is placed in the most superior aspect of the palate. When patients try to suck their thumbs or fingers, the roller prevents them from experiencing the satisfaction of suckling. Instead, their tongue spins the roller.
The Hawley appliance is one of the oldest types of retainers used post-treatment. A removable item, it's made of a combination of acrylic and metal that is molded custom to fit your mouth. As you've probably seen, the wires sit against the six front teeth with loops near the canines that allow for minor adjustments as the teeth settle into place.
BAND AND LOOP SPACERS
Premature tooth loss means there will be extra space in the teeth. As your child waits for his or her new tooth to grow, the other teeth tend to move and close the space from early loss of a tooth. Before the new molar erupts, Band and Loop spacers preserve the teeth’s proper alignment, while making sure the new tooth will erupt in its proper position. A stainless steel band is placed temporarily around a distal molar, with a stainless steel wire that loops out to extend to the second primary molar, leaving a space between them for the premolar eruption.