**Core Concept**
Jiffy denture refers to a type of dental prosthesis designed to provide temporary or immediate denture replacement. This concept involves the principles of removable partial dentures in prosthodontics.

**Why the Correct Answer is Right**
The Jiffy denture is a type of immediate denture that is fabricated and delivered to the patient on the same day of extraction. This is made possible by pre-extraction impressions and subsequent fabrication of the denture. The denture is then inserted immediately after tooth extraction, allowing the patient to have a functional denture from the outset.

**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect as Jiffy denture is not related to fixed partial dentures.
**Option B:** This option is incorrect as Jiffy denture is not a type of dental impression material.
**Option C:** This option is incorrect as Jiffy denture is not a type of dental implant.

**Clinical Pearl / High-Yield Fact**
Jiffy denture is often used in cases where immediate denture is required, such as in patients with advanced periodontal disease or those who are undergoing multiple extractions. The key to success of Jiffy denture lies in accurate pre-extraction impressions and proper denture design.

**Correct Answer:** D.