What is iodoform used for in dentistry?

Iodoform has the chemical formula CHI₃ and is a solid, yellow, crystalline organic compound. It has a distinct piercing aroma. It is widely used in dentistry as an antiseptic and disinfectant due to its germicidal properties. Its uses in dentistry include:

1. Root canal treatment: Iodoform is used as an intracanal medicament in the treatment of infected root canals. It releases iodine slowly, which has antimicrobial effects.

2. Temporary fillings: Iodoform can be used as a temporary filling material in cases where a tooth has been damaged or decayed and needs temporary protection before a permanent solution is found.

3. Disinfecting root canals: Due to its bactericidal properties, iodoform is used to eliminate microorganisms that may be present in root canals during the treatment process.

4. Pain relief: Iodoform possesses mild anesthetic properties, providing some level of pain relief to the patient.

5. Promoting tissue repair: Iodoform has been shown to stimulate tissue regeneration, promoting the healing process in dental procedures.

6. Preventing infections: As a disinfectant, iodoform helps to prevent infections in dental procedures, especially in cases where the tooth is exposed to bacteria.

7. Post-operative care: Iodoform can be applied to the surgical site after dental procedures to help prevent infections and promote healing.

However, it's worth noting that iodoform is rarely used alone and is often combined with other materials, such as zinc oxide and eugenol, to form dental cement or root canal sealers. Additionally, due to its strong odor and potential toxic effects, the use of iodoform in dentistry has declined over time, and alternative antimicrobial agents are often preferred in modern dentistry.