Twin block is a functional appliance commonly used to correct skeletal problems, typically a deep bite and retrognathic mandible (short lower jaw). It’s termed functional appliance because the effect takes place when in use i.e chewing and eating. The appliance is designed to posture the lower jaw forward and this muscular action encourages the growth of the lower jaw. It is most effective when used during pubertal growth period, usually followed by treatment with fixed braces to straighten teeth into a proper bite.
Your appliance may have screws incorporated to help develop the jaw. The screws should be turned with a key fully as instructed by your dentist. Each turn is a ¼ mm activation.
- They should be turned at the rate determined by your dentist.
- If you forget to do a turn, DO NOT do extra turns to catch up. This can have a negative effect on the treatment outcome.
- An activation of the appliance is recommended at bedtime so by the next morning, the pressure from the turn is gone.
Please write in the date to keep track of the number of turns in the document above.
- Place the plates in the correct position then push firmly. The appliances will click in.
- If the screw is activated, the appliance can feel tighter. Make sure the appliance is completely seated.
- To remove, pull down evenly on the back metal clips on both sides.
- The Twin block should be worn full time and removed only for cleaning.
- Not wearing the Twin block adequately will result in a poor fit.
- Wearing the Twin block while eating will speed up the treatment.
- The Twin block should be removed if playing contact sports.
- It’s normal to feel uncomfortable in the first 2-3 weeks as you’re getting used to the appliance.
- If tender area persists, please contact the clinic for adjustment.
- Otherwise, the appliance will be reviewed and adjusted every 4 weeks.
- The Twin block should be rinsed out after every meals.
- The Twin block is removed for cleaning in the morning and at night.
- The appliance is cleaned with tooth brush and soapy water.
- Natural teeth should be cleaned normally without the appliance in the mouth.
- Inadequate cleaning may result in tooth decay and gum diseases.
- If the appliance is broken, there will be a fee for replacement. Please contact the clinic immediately.
- Begin by eating soft food until getting used to the appliance.
- Avoid eating sticky and hard food to prevent chipping and breakage.
- Avoid sweet food and drinks to minimize the risk of tooth decay during treatment.