Anderson and Hillman in 1971 introduced this into orthodontics?
**Core Concept**
The introduction of a new concept in orthodontics by Anderson and Hillman in 1971 refers to the incorporation of a novel method for correcting tooth malposition and alignment. This concept is based on understanding the principles of mechanotherapy and the effects of continuous forces on dental tissues.
**Why the Correct Answer is Right**
Anderson and Hillman introduced the concept of **Trapezoidal Coordination** into orthodontics, which is a method of applying continuous forces to teeth to correct malposition and alignment. This concept is based on the understanding that the application of continuous forces results in a more efficient and effective correction of tooth position. The trapezoidal coordination is a mathematical model that describes the optimal sequence of force application to achieve the desired tooth movement.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not relate to the concept introduced by Anderson and Hillman. The concept of "Orthodontic Mechanics" is a broad field that encompasses various methods of tooth movement, but it is not the specific concept introduced by Anderson and Hillman.
* **Option B:** This option is incorrect because it is a term related to a different field of orthodontics. The concept of "Functional Orthodontics" is a method of orthodontic treatment that focuses on the development of the entire dentofacial complex, but it is not the specific concept introduced by Anderson and Hillman.
* **Option C:** This option is incorrect because it is a term related to a different aspect of orthodontic treatment. The concept of "Interceptive Orthodontics" is a method of early orthodontic treatment, but it is not the specific concept introduced by Anderson and Hillman.
**Clinical Pearl / High-Yield Fact**
The concept of trapezoidal coordination is a classic example of how understanding the principles of mechanotherapy can lead to more efficient and effective orthodontic treatment. This concept has been widely adopted in orthodontic practice and has contributed significantly to the development of modern orthodontic treatment methods.
**Correct Answer: C. Tip Edge Coordination.**