thanks for your query, i have gone through your query. the medicines which affect the oral health includes calcium channel blockers and barbiturates may cause gingival enlargement. atropine and antihistamines causes reduced salivary secretion and which increases the incidence of gingivitis and periodontitis, increased incidence of caries. for full denture wearers patient has to remove the denture and keep it in a bowl with normal water during night time. patient has to clean the alveolar ridges with finger or guaze. steps to maintain oral hygiene includes rinsing the mouth soon after eating anything, cleaning the denture with denture cleansers. i hope my answer will help you take care.