**Core Concept**
Immediate dentures are a type of removable denture that is fabricated and inserted into the mouth immediately after tooth extraction. This approach has both advantages and disadvantages. The underlying concept being tested here is the comparison of the benefits and drawbacks of immediate dentures.

**Why the Correct Answer is Right**
Immediate dentures allow patients to maintain their appearance and function immediately after tooth extraction, which can improve their psychological well-being. They also facilitate the healing process by protecting the underlying bone and soft tissues, reducing the risk of complications such as dry socket or infection. Additionally, immediate dentures can help to stabilize the surrounding teeth and prevent them from shifting out of position.

**Why Each Wrong Option is Incorrect**
**Option A:** While immediate dentures can be aesthetically pleasing, they are not necessarily a cost-effective option, as they require additional visits to the dentist and may involve more complex fabrication.

**Option B:** Immediate dentures can actually be more comfortable for some patients, as they allow for the extraction of teeth in a more controlled environment and can reduce the discomfort associated with healing.

**Option C:** Immediate dentures are not necessarily more prone to complications than conventional dentures, as long as they are properly designed, fitted, and cared for.

**Clinical Pearl / High-Yield Fact**
A key advantage of immediate dentures is that they allow patients to maintain their ability to chew and speak immediately after tooth extraction, which can help to prevent malnutrition and social isolation.

**Correct Answer:** D.