**Core Concept**
Occlusal interferences refer to the premature contact of teeth during mandibular movements, which can lead to temporomandibular joint (TMJ) disorders, muscle pain, and other oral health issues. These interferences can arise from various factors, including tooth malposition, excessive wear, or restorations that alter the occlusal plane.

**Why the Correct Answer is Right**
Occlusal interferences can be caused by a range of factors, including:
* *Anatomical interferences*: These occur when the shape of the upper or lower teeth does not allow for proper occlusion, resulting in premature contact.
* *Functional interferences*: These arise from the way the teeth come into contact during jaw movements, often due to muscle imbalances or altered occlusal plane.
* *Iatrogenic interferences*: These are caused by dental restorations or appliances that alter the occlusal plane, leading to premature contact.

**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because occlusal interferences can indeed be caused by anatomical factors, such as tooth malposition or excessive wear.
* **Option B:** This option is incorrect because functional interferences are a recognized cause of occlusal interferences, resulting from muscle imbalances or altered occlusal plane.
* **Option C:** This option is incorrect because iatrogenic interferences are a valid cause of occlusal interferences, often due to dental restorations or appliances that alter the occlusal plane.

**Clinical Pearl / High-Yield Fact**
It's essential to note that occlusal interferences can be asymptomatic or present with a range of symptoms, including jaw pain, headaches, and earaches. Early detection and correction of occlusal interferences can prevent long-term damage to the TMJ and surrounding tissues.

**Correct Answer:** D