Pharmacology & Medications in Implantology Flashcards

When a patient is allergic to penicillin, which antibiotic is a common alternative for prophylaxis in implant surgery?

Answer: Clindamycin

Clindamycin provides coverage against gram-positive and anaerobic oral organisms and is the standard penicillin-allergy alternative in dental surgical prophylaxis.

Epinephrine is added to local anesthetics used during implant surgery primarily to:

Answer: Prolong anesthetic duration and reduce systemic absorption

Epinephrine causes local vasoconstriction, slowing anesthetic absorption into the bloodstream and extending the duration of the block while reducing bleeding.

A patient using proton pump inhibitors (PPIs) long-term is at risk for implant complications primarily because PPIs can cause:

Answer: Reduced calcium absorption leading to lower bone density

Long-term PPI use reduces gastric acid-mediated calcium absorption, potentially decreasing bone mineral density and impairing osseointegration.

Which local anesthetic has the longest duration of action and is often used for prolonged implant procedures or postoperative analgesia?

Answer: Bupivacaine

Bupivacaine has a significantly longer half-life than other dental local anesthetics, providing extended numbness useful for lengthy or painful implant surgeries.

Metronidazole is sometimes combined with amoxicillin for implant-related infections because metronidazole specifically targets:

Answer: Obligate anaerobic bacteria

Metronidazole is selectively effective against obligate anaerobes, complementing amoxicillin's spectrum for polymicrobial peri-implant infections.

Systemic tetracyclines are sometimes used adjunctively in peri-implantitis management because they:

Answer: Inhibit matrix metalloproteinases and have anti-inflammatory properties beyond antibacterial activity

Tetracyclines inhibit host-derived MMPs that degrade connective tissue, providing an anti-destructive effect useful in managing peri-implant bone loss.

A patient who smokes is prescribed an implant-supported prosthesis. From a pharmacological standpoint, nicotine primarily impairs implant healing by:

Answer: Causing vasoconstriction and reducing tissue oxygenation

Nicotine-induced vasoconstriction reduces blood flow and oxygen delivery to surgical sites, impairing healing and increasing failure risk.