IMPORTANT: Read Before Relining Your Lower Denture

This is our suggested procedure for relining the lower denture and you should try this method, first. It works well for the majority of users. If this does not work well for you, you might need to do a little trial and error and to figure out what works best for you.


IMPORTANT: You must have a PERFECT-FITTING upper denture to properly reline your LOWER denture! 

  • Do not attempt to reline your lower until your upper fits perfectlyIf your upper fit is not perfect or unstable, it will throw off your bite on the lower. You need to use your upper teeth to properly seat your lower.
  • Do not reline the upper and the lower at the same time.
  • You must seat your denture as directed below for the most successful reline. Keep in mind that when your gums shrink, they shrink on the front and back sides, and on the top of the ridge. Therefore, you might have a void between the bottom of the trough and where your gum line once was when it was higher. You might need silicone to support your gum line in the place where it once used to be. Do not press down the denture with your fingers or bite down hard. This is not adhesive and you must not treat the silicone like it is adhesive. You must put your gums in exactly the right position, with your upper teeth making correct contact with your lower, and then allow it to set up right there. If you press with your fingers or bite down hard, your bite will not be correct with your uppers; also, you will squish out the silicone from the bottom of your trough, where you likely might need it.

*Make sure you have a TIMER and MIRROR handy before you start.

Procedure for Relining the Lower Denture

  1. Clean, dry and PRIME your denture according to the instructions that came with your kit. Make sure you prime in the trough, on the walls, on the ridge, and slightly over the ridge on the front. Let primer dry 2 minutes.
  2. Apply 1 FULL applicator of silicone around the inside wall of your denture (apply to both the front and back sides of the inside of your denture a ring, making around the inside.)
  3. Immediately put the denture lightly into your mouth. Do not bite down. Do not press down.
  4. Look in the mirror to ensure that the 2 front teeth of your lower are centered with the 2 front teeth of your upper. (You are making sure that your denture is not rotated on your gum line.)
  5. To SEAT your denture, gently put your upper and lower back teeth together in a natural biting position, just until upper and lower are making proper even contact and are comfortable. Then STOP! Look in the mirror to make sure it looks like it is in the right place…not too high and not too low.
  6. Relax your lower jaw, keep still and allow the silicone to cure right there for 4 minutes.

If still not snug, proceed to the Snug-Up Application 

(If silicone has not flashed all the way around your denture, up on top of the ridge of your denture and slightly over the ridge to the front of your denture, then you likely still do not have your best fit, yet. You want the silicone to flash all the way around the ridge of your denture to give you the best seal possible.)

Snug-Up Application

1. Apply PRIMER to any bare spots on the top of the ridge and also slightly over the front of the ridge. You can use a cotton Q-Tip if you wish. Do not prime on top of silicone, only prime any bare spots of hard acrylic.

2. Apply a line of silicone on the inside top of the wall/ridge, and then apply the remainder of the silicone around the middle of the wall.

3. Seat your denture exactly as you did the first time. Let cure 4 minutes.

Tips for Trimming
Be aware that over-trimming can cause you to lose suction. If you have flashing coming slightly off of the back of your lower denture, this is good! If it does not bother you, LEAVE it alone as it helps to stabilize it a bit and contributes to a better seal. If you do need to trim it, try to leave a little silicone extending off the back of the trough of your lower denture.
*ONLY trim if silicone is loose/hanging/uncomfortable…or if you can see it when you smile

*Only trim on the FRONT side of your denture.

 *NEVER trim directly on top of the ridge. You will break your silicone seal.