Dentistry focuses on diagnosing, preventing, and treating conditions of the teeth, gums, and oral structures, supporting oral health and overall well-being.

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Diagnosis and Evaluation

Diagnosing and planning treatment in dental pharmacology involves careful judgment and a personalized approach. It is more than just finding a cavity; it means looking at the patient’s overall health and all the medicines they take to choose the safest and most effective treatment. At Liv Hospital, we review each patient’s medical history, current medications, and dental problems. We use tests when needed to check organ function and make sure drugs are processed safely. This careful process helps prevent drug interactions, allergies, and other problems, so we can adjust treatment for each person, whether they are a child, pregnant, or have other health issues.

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Comprehensive Medical History Review

DENTISTRY

A complete medical history is the key to prescribing medications safely.

Systemic Health Assessment

Dentists check a patient’s overall health to find any issues that might affect which drugs to use and how much to give.

  • Hepatic Function: The liver is the primary site of drug metabolism (biotransformation). Patients with liver disease (hepatitis, cirrhosis) may have impaired ability to break down drugs like local anesthetics (amides), analgesics (acetaminophen), and antibiotics (erythromycin), leading to potential toxicity.
  • Renal Function: The kidneys are responsible for drug excretion. Patients with renal failure or chronic kidney disease may require dose adjustments for drugs excreted unchanged in the urine (e.g., amoxicillin, cephalosporins) to prevent accumulation and toxicity.
  • Cardiovascular Status: Patients with uncontrolled hypertension, arrhythmias, or ischemic heart disease require careful evaluation before using local anesthetics containing vasoconstrictors (epinephrine), as these can increase heart rate and blood pressure.
  • Respiratory Health: Conditions like asthma may contraindicate the use of NSAIDs (which can trigger bronchospasm in aspirin-sensitive asthmatics) or respiratory depressants like opioids and benzodiazepines.
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Medication Reconciliation

DENTISTRY

Dentists must review all the medicines a patient takes, including prescriptions, over-the-counter drugs, and supplements, to spot any possible interactions.

  • Drug-Drug Interactions: Identifying conflicts is vital. For example, erythromycin and metronidazole can interact with warfarin (coumadin), dangerously increasing the risk of bleeding. NSAIDs can reduce the antihypertensive efficacy of ACE inhibitors and beta-blockers.
  • Herbal Interactions: Supplements are biologically active. Ginkgo biloba, garlic, and ginseng can inhibit platelet aggregation and increase bleeding time, impacting surgical planning. St. John’s Wort can induce liver enzymes, reducing the effectiveness of other drugs.

Clinical Diagnosis of Oral Pathology

Finding out exactly what is causing the problem helps dentists choose the right type of medication.

  • Infection Differentiation: Clinical signs and sometimes microbiological culture/sensitivity tests are used to distinguish bacterial infections (requiring antibiotics) from viral infections (requiring antivirals or supportive care). Prescribing antibiotics for viral conditions is ineffective and promotes antibiotic resistance.
  • Pain Assessment: Using pain scales (Visual Analog Scale) to quantify intensity and descriptive terms (sharp, dull, shooting) to characterize pain helps select the appropriate analgesic potency, from mild non-opioids to stronger multimodal combinations.
DENTISTRY

Laboratory Evaluation

For patients with complicated health issues, lab tests help dentists decide which medications to use.

  • Coagulation Profile: For patients on anticoagulants (warfarin, heparin), checking the PT/INR (International Normalized Ratio) is essential to ensure their blood clotting capability is within a safe therapeutic range for surgery.
  • Metabolic Panels: Liver function tests (LFTs) and serum creatinine levels help in adjusting drug dosages for patients with organ dysfunction.
  • HbA1c and Glucose: For diabetic patients, assessing glycemic control is crucial, as acute infections can cause hyperglycemia, and uncontrolled diabetes impairs healing and the immune response.

Risk Stratification for Anesthesia

Some groups of patients need special consideration when choosing medications.

  • Pregnancy and Lactation: Drugs are categorized based on their safety for the fetus. We avoid known teratogens (such as tetracycline, which stains developing teeth) and select drugs with established safety profiles (such as lidocaine and acetaminophen). Consideration is also given to drugs that pass into breast milk.
  • Pediatric Patients: Children are not small adults; they metabolize drugs differently. Dosing is strictly weight-based (mg/kg). The evaluation includes accurate weight measurement to prevent overdose, particularly with local anesthetics and sedatives, which have a narrower margin of safety in children.
  • Geriatric Patients: The elderly often have reduced physiological reserve (“start low and go slow”) and are frequently on multiple medications (polypharmacy), significantly increasing the risk of drug interactions, falls (from sedation), and cognitive side effects.

Special Populations Assessment

Before administering local or general anesthesia, an ASA (American Society of Anesthesiologists) Physical Status classification is assigned.

  • Airway Assessment: Evaluating the airway anatomy (Mallampati score, neck mobility) is critical if sedation is planned to ensure the airway can be managed safely.
  • Cardiovascular Reserve: Assessing metabolic equivalents (METs)—the patient’s ability to perform physical activity—helps predict their ability to withstand the stress of the procedure.

Pharmacogenetic Testing

Emerging personalized medicine allows for genetic testing to predict drug response.

  • Metabolic Variants: Genetic variations in cytochrome P450 enzymes (e.g., CYP2D6) can affect how patients metabolize drugs like codeine (which may not provide pain relief in “poor metabolizers”) or NSAIDs, allowing for precise drug selection.

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Assoc. Prof. MD. Elif Dilara Arslan Assoc. Prof. MD. Elif Dilara Arslan Dentistry
Group 346 LIV Hospital

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FREQUENTLY ASKED QUESTIONS

Why does the dentist ask about all my medications?

Dentists need your complete medication list to check for drug interactions that could cause harmful side effects, reduce the effectiveness of your treatment, or cause bleeding complications.

The ASA classification is a global system used to assess a patient’s pre-operative physical health status, helping dentists determine the safety of performing procedures and administering anesthesia.

Many dental drugs are safe during pregnancy, but some are not; your dentist will carefully select medications (like lidocaine and acetaminophen) that minimize risk to the developing baby.

Children process drugs differently than adults, and their smaller body mass means standard doses can be toxic; weight-based calculations are essential for safety.

If you are taking blood thinners, have a history of bleeding disorders, or have severe liver or kidney disease, specific blood tests are necessary to ensure safety.

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