Bite registration getting stuck in the mouth

Occasionally I have issues with bite registration getting stuck in tooth undercuts in the mouth and being difficult to remove. This is not a major issue as the bite registration usually flexes out or breaks at the point where it is stuck. This can make the bite registration more difficult to handle in the lab stage but is not a big problem. This is becoming especially common as I have switched to a more rigid bite registration material which makes it easier to trim and introduces less inaccuracy during mounting as the material won't deform as much under compression.

Watch out for situations where there are multiple non adjacent missing teeth especially with kennedy class 3 situations with bounded saddles. Also kennedy class 4s can be an issue  with especially canines having deep mesial undercuts. Every denture aspect is improved in kennedy class 3s but the bite registration is made more difficult. In class 1 and 2 situations will flex out but 3 and 4 will get locked in.

Try not to squeeze too much bite registration into edentulous areas, you will be triming the bite back to just the cusp tips anyway so there is no point having excessive material. Squeeze the material onto the arch which has the most teeth present and then get the patient to bite together. This will minimise the amount that is extruded onto the edentulous spaces. If you want to put the material on the upper arch, you need to lie the patient back so gravity doesn't pull the material off the teeth and point the tip almost perpendicular against the teeth to ensure there is good adaptation.