an oral delivery device for the treatment of periodontal disease , the device being in a solid unit dosage form configured for insertion into a periodontal pocket of a patient . the device consists of : a biodegradable pharmaceutically acceptable water - insoluble polymer in the form of a matrix ; a therapeutically effective amount of at least one anti - inflammatory agent dispersed within the matrix ; optionally a plasticizing agent ; optionally at least one of a wetting agent , a suspending agent and a dispersing agent ; and optionally an enzymatically biodegradable pharmaceutically acceptable water soluble polymer dispersed within the matrix . the biodegradable water - insoluble polymer is degradable by enzymatic degradation , physical disintegration or a combination thereof . also disclosed is a periodontal implant comprising the device and a method for the treatment of periodontal disease comprising administering to a periodontal pocket of a patient in need of such treatment the delivery device .