**Core Concept**
Dean's technique is a method used in periodontal surgery to treat a specific condition affecting the alveolar bone. This technique involves the removal of the interdental bone to create a smooth surface, facilitating better oral hygiene and reducing the risk of further bone loss.

**Why the Correct Answer is Right**
Dean's technique is a form of intraseptal alveoplasty, which involves the surgical removal of the interdental bone to create a flat surface. This procedure is typically performed to treat alveolar bone defects, such as those caused by periodontal disease. The goal of Dean's technique is to create a smooth, even surface that allows for easier cleaning and reduces the risk of further bone loss. This is achieved by removing the interdental bone with a high-speed drill, followed by the application of a bone graft to fill the resulting defect.

**Why Each Wrong Option is Incorrect**
**Option A:** Radicular surgery refers to procedures performed on the root of a tooth, such as root canals or apicoectomies. Dean's technique is not a form of radicular surgery.
**Option B:** Cyst removal is a surgical procedure used to remove a dental cyst, which is a fluid-filled sac that can form on the jawbone. While Dean's technique may be used in conjunction with cyst removal, it is not a form of cyst removal itself.
**Option D:** Mucoperiosteal flap refers to a surgical technique used to access the underlying bone and tissue of the mouth. While a mucoperiosteal flap may be used in conjunction with Dean's technique, it is not a form of intraseptal alveoplasty.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that Dean's technique is a specific type of intraseptal alveoplasty used to treat alveolar bone defects. This technique should be distinguished from other forms of alveoplasty, such as those used to treat tooth loss or to prepare the jaw for dentures.

**✓ Correct Answer: C. Intraseptal alveoplasty**