I've had several occurrances of dental pain with no cause discovered by the dentist. Clove oil applied to the gums where the pain was caused the pain to move to an untreated location....so I put more clove oil on. It helped, the pain went away. I find chewing chicle-based gum when not experiencing the dental pain (not the synthetic gum base in most commercial gums) helps to prevent it, too...
Chronic Lyme Disease, Gluten & Sulfite Sensitivity, Many Food/Inhalant/Medication/Chemical Allergies & Intolerances, Asthma, Gut issues (dysmotility, non-specific inflammation), UCTD ("Secondary Lupus-Like Syndrome"), Osteoporosis, Pancytopenia, chronic malabsorption/malnutrition, etc.; G-Tube; Currently TPN-dependent.
Meds: Zofran, Pulmicort, Heparin (to flush PICC line), IV Ceftazidime (for Pleural Effusion), Colloidal Silver (used topically).