Impression Tips—Tight Fitting Crowns

   ISSUE: Tight Crowns   


Cause and Solution:


1. Early Mouth Removal
     • Closely follow product recommendation for oral setting time.


2. Seating partially set impression material
     • Closely follow product recommendation for oral working time.


3. Poor bond of material to tray
     • Always use a VPS tray adhesive and allow to dry as per product instructions.

   ISSUE: Short Crowns   

Cause and Solution:

1. Insufficient Tray Support (weak or low tray walls)

     • Use custom or inflexible (preferably metal) stock trays.

2. Teeth in contact with tray and/or not adequately relieving  pre-set impression material

     • Avoid contact of teeth with tray, or pre-set tray material.

3. Insufficient die trimming

     • Consult with dental laboratory.