Rampant cervical caries in a patient with medication-induced xerostomia who asks for full maxillary extraction
Mrs. G, 71, has nine remaining maxillary teeth and eleven mandibular teeth. In the last 18 months she has developed six new cervical and root-surface lesions; two are cavitated and one on #8 is within 1 mm of the pulp. Stimulated salivary flow is 0.4 mL/min. She takes oxybutynin for urinary urgency, amlodipine, and long-term omeprazole, and she eats crackers through the day for nausea. She had a myocardial infarction two years ago and takes aspirin 81 mg. She has no dental insurance and a monthly income of about $1,100. She says, "Just pull the top ones - I can't afford to keep fixing them," and asks for a lower denture too.
1. She has proposed her own treatment plan. How do you evaluate it on the merits rather than simply accepting or refusing it?
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Her plan addresses the cost, not the disease, and in her mouth it would probably make things worse.
- Xerostomia is the engine. Oxybutynin is strongly anticholinergic, omeprazole is on the list, and her constant cracker snacking supplies fermentable substrate all day. She is in a high, ongoing caries-risk state regardless of which teeth are present.
- Extraction does not cure xerostomia. A denture in a dry mouth is a poor prosthesis: retention and comfort suffer, and the residual ridge and remaining teeth are still at risk.
- She would trade teeth that can be saved for a prosthesis that may not work, reducing function and increasing the chance of needing a removable prosthesis she cannot tolerate.
- Nobody has treated the cause. Fluoride, diet, saliva management, and a medication review are not on her list because nobody offered them.
So: acknowledge the financial constraint as real, then reframe. "Extraction is a permanent solution to a temporary problem. Let me show you what the low-cost prevention path looks like, and if it doesn't work we can still talk about the extractions." Then verify what is actually unrestorable - a tooth within 1 mm of the pulp is not automatically hopeless.
2. Given her income, what is your phased plan, and what do you do first?
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Rank by what prevents the most destruction per dollar.
Visit 1 - prevention and arrest, cheapest and highest yield
- 5,000 ppm fluoride toothpaste, with explicit instruction on spit-don't-rinse.
- Silver diamine fluoride on the cavitated lesions, including the deep one on #8, to arrest caries and buy time. Counsel on the black staining.
- Fluoride varnish at this and subsequent visits.
- Diet: replace all-day cracker grazing with fewer, defined eating occasions; suggest alternatives that are less cariogenic and discuss the nausea with her physician.
- Water and sugar-free xylitol gum or lozenges if she can tolerate them.
Visit 2 - stabilize
- Glass ionomer or interim restorations on lesions that can be sealed; these release fluoride and are cheaper than a definitive esthetic restoration.
- Extractions only for teeth that are truly unrestorable or that are the source of pain.
Ongoing
- Three-month recall rather than six, because her risk is active.
- Revisit the denture question after the disease is under control.
The sequence matters: restoring into an untreated high-risk environment is how patients end up back in the chair.
3. What is your approach to her medications - what will you do, and what will you deliberately not do?
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Will do
- Write to her prescriber, with her consent, describing the measured low salivary flow and the pattern of new root caries, and ask whether an alternative to oxybutynin is feasible and whether long-term omeprazole still has an indication. Frame it as information the physician may not have: the dental consequence of the drug.
- Note that she is on aspirin 81 mg - this does not require stopping for routine extractions or restorations, and the letter should not imply otherwise.
- Document the medication review and the referral in her chart.
Will not do
- Will not tell her to stop or change any of these medications. Oxybutynin controls her urinary symptoms; omeprazole may be protecting her stomach; neither is mine to discontinue.
- Will not present the medication letter as a condition of treatment, or imply that prevention is pointless until the drugs change.
The judgment: you can influence the medical plan without owning it, and the caries prevention has to start today regardless of what the physician decides.