Tissue stops are integral parts of minor connectors designed for retention of acrylic resin bases.
Extension of finishing line to area of pterygomaxillary notch provides butt-type joint for attachment of border portion of resin base through pterygomaxillary notch (arrows).
Provide stability to the framework during the stages of transfer and processing. They are particularly useful in preventing distortion of the framework during acrylic resin processing procedures.
Tissue stops can engage buccal and lingual slopes of the residual ridge for stability.
Altered cast impression procedures often necessitate that tissue stops be augmented subsequent to the development of the altered cast. This can be readily accomplished with the addition of auto polymerizing acrylic resin.
Another integral part of the minor connector designed to retain the acrylic resin denture base is similar to a tissue stop but serves a different purpose.
It is located distal to the terminal abutment and is a continuation of the minor connector contacting the guiding plane. Its purpose is to establish a definitive finishing index tissue stop for the acrylic resin base after processing.