Acrylic teeth in complete denture set against natural teeth leads to?
**Core Concept**
The underlying principle here is the concept of **tooth-to-tooth contact** and its effects on the surrounding tissues. When acrylic teeth in a complete denture set against natural teeth, it can lead to changes in the occlusal relationship, which in turn affects the masticatory muscles, temporomandibular joint (TMJ), and surrounding bone structure.
**Why the Correct Answer is Right**
When acrylic teeth come into contact with natural teeth, it can cause an **unnatural occlusal scheme**, leading to **increased stress** on the TMJ and surrounding muscles. This can result in **bruxism**, **TMJ disorders**, and even **temporomandibular joint pain**. The unnatural occlusal scheme also leads to **abnormal wear and tear** on the natural teeth, which can result in **tooth wear**, **dental erosion**, and **dental sensitivity**.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is incorrect because it does not specifically address the effects of acrylic teeth on natural teeth. While it is true that acrylic teeth can be prone to wear and tear, the question specifically asks about the effects of acrylic teeth on natural teeth.
* **Option B:** This option is incorrect because it is too vague and does not specifically address the effects of acrylic teeth on natural teeth. While it is true that TMJ disorders can be caused by various factors, the question specifically asks about the effects of acrylic teeth on natural teeth.
* **Option C:** This option is incorrect because it is not a direct consequence of acrylic teeth coming into contact with natural teeth. While it is true that dental erosion can be caused by various factors, the question specifically asks about the effects of acrylic teeth on natural teeth.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that **proper occlusal adjustment** is crucial in preventing TMJ disorders and tooth wear when acrylic teeth are used in complete dentures. This involves adjusting the occlusal scheme to ensure even distribution of forces on the teeth and surrounding tissues.
**Correct Answer: C. Increased stress on the temporomandibular joint and surrounding muscles.**