**Core Concept**
A periodontal pack is a dressing used in periodontal therapy to provide a moist environment, facilitate healing, and achieve various therapeutic objectives. It is composed of gauze or other materials soaked in medicaments such as antibiotics, analgesics, or hemostatic agents.

**Why the Correct Answer is Right**
Pain elimination is the least successful outcome of periodontal packing. While periodontal packs can provide antimicrobial effects (B) and aid in hemostasis (C), their primary purpose is not to eliminate pain. In fact, the packing process itself can cause discomfort or pain. Additionally, periodontal packs are not designed to splint teeth (A), which is a different therapeutic approach. Pain elimination is more effectively managed with analgesic medications or other pain management strategies.

**Why Each Wrong Option is Incorrect**
**Option A:** Splinting is a technique used to stabilize teeth that are loose or mobile due to trauma, periodontal disease, or other factors. While a periodontal pack may provide some degree of stabilization, it is not a substitute for a splint.
**Option B:** Antimicrobial properties are a key benefit of periodontal packs, which can help control infection and promote healing in periodontal defects.
**Option C:** Hemostasis is another important function of periodontal packs, which can help control bleeding and promote clotting in periodontal tissues.

**Clinical Pearl / High-Yield Fact**
When using periodontal packs, it's essential to choose a pack that is gentle on the tissues and does not cause further irritation or discomfort. A well-moistened pack can be more effective than a dry one, as it helps maintain a healthy environment for healing.

**✓ Correct Answer: D. Pain elimination**