Clinical decision-support only. For use by licensed dental professionals. Not a substitute for professional judgment or a complete drug reference. Always verify with primary sources.
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Medication

Tetracycline

Antibiotic (tetracycline)

Brand names: Sumycin

Oral health effects

  • Intrinsic tooth staining (developmental)

    Yellow-brown to gray banded discoloration if given during odontogenesis.

    Mechanism: Calcium chelation during mineralization.

    Clinical management: Contraindicated in pregnancy and children <8; established staining may need esthetic management.

  • Black hairy tongue and glossitis

    Black hairy tongue and glossitis are listed gastrointestinal adverse reactions of tetracycline. Frequency not stated.

    Clinical management: Teach daily tongue brushing/scraping and good oral hygiene. Bland rinses for a sore tongue. Rule out candidiasis. Usually resolves after therapy.

Sources

  1. A review and guide to drug-associated oral adverse effects-Dental, salivary and neurosensory reactions. Part 1. Teoh L, Moses G, McCullough MJ. Journal of oral pathology & medicine : official publication of the International Association of Oral Pathologists and the American Academy of Oral Pathology, 2019.
  2. Tetracycline hydrochloride prescribing information (FDA label) Bryant Ranch Prepack / DailyMed, 2026.
  3. Black Hairy Tongue: Predisposing Factors, Diagnosis, and Treatment. Schlager E, St Claire C, Ashack K, Khachemoune A. American journal of clinical dermatology, 2017.