Dental The imperfection seen on the lingual flange of a lower denture caused by rapid heating during a curing cycle is called: A Localised shrinkage porosity B Gas inclusion porosity C Micro-porosity D Surface porosity 💡 Explanation The imperfection seen on the lingual flange of a lower denture caused by rapid heating during a curing cycle is called: ✓ Correct Answer: D. Surface porosity