Journal of Dental Medicine

Normal 0 false false false EN-US X-NONE AR-SA In 9 patients of 11-20 years old, Pulp response to phosphoric acid 37% during a 15 seconds etching period was studied. Class V cavities in cervical third of premolars were prepared as symmetrical couples. All the process was identical in both groups of case and control. In test group, 15 seconds etching period by phosphoric acid 37% was done. The teeth were then restored by ZOE. Only one case complained of pain and discomfort. After 1,2,4,6,12,24,56 days the teeth were extracted. In 100 sections made from extracted teeth of 5 patients , pulpal response to acid reaction was a mild inflammation with good prognosis.