An investigation into some of the factors concerned in the surgical removal of the impacted lower wisdom tooth, including a double blind trial of chymoral.

During the surgical extraction of 102 impacted lower wisdom teeth the following factors were studied: the amount of trauma applied during tooth removal; the duration of the operation; post-operative swelling; post-operative trismus; sex differences; the relationship between swelling and trismus; the pattern of development and subsidence of swelling and trismus. This study was combined with a clinical 'double-blind' trial of the drug Chymoral.