After u did upper& lower complete denture for old pt. He came back to the clinic next day complaining of un comfort with the denture

After u did upper& lower complete denture for old pt. He came back to the clinic next day complaining of un comfort with the denture. After u re check ,no pain, good occlusion, good pronunciations , but u notice beginning of inflammation in the gum and outer margins of the lips , u will think this is due to:
1- xerostomia.
2-vit-B deficiency
3- sclero edema
Xerostomia can cause difficulty in speech and eating. It also leads to halitosis and a dramatic rise in the number of cavities, as the protective effect of saliva's remineralizing the enamel is no longer present, and can make the mucosa and periodontal tissue of the mouth more vulnerable to infection.