I have chronic dry mouth and bad breath. no dental problems and no medication. no smoke or drink. causes? who should i see for help? gland problems?

Might be: Chronic dry mouth can be of neurological or endocrine (glandular) origin. It could lead to breath issues as well. If you aren't taking any meds, many of which have this as a side effect, a visit to your primary care provider could be helpful to figure out the dry mouth. One thing that can help bad breath for many is to add brushing the top of your tongue to your oral hygiene regimen.

See a doctor: You need to see a periodontist to rule out any oral problems then an ENT doctor then a GI doctor and finally an endocrinologist if no one else can see the problem the are multiple causes for dry mouth and bad breath some local to the mouth and some systemic.

If dentist clears : You - get medical eval. Bad breath may be caused by smoking, dry mouth (due to medications, ^ mouth breathing or salivary gland problems), gum infections, poor dental hygiene, certain foods (like garlic, curry, fish oils or onions), sinusitis, post nasal drip, throat infections, infections in the mouth, bronchitis, lactose intolerance, gerd, improperly cleaned dentures, braces ; retainers.