During clinical examination, it was noted that patient has natural lower anterior teeth which occlude against the complete upper denture. Clinician is most likely to find:
**Core Concept**
The clinical scenario presented involves the relationship between the natural lower anterior teeth and a complete upper denture. This situation requires an understanding of the principles of occlusion in dentistry, specifically the concept of occlusal scheme and the types of occlusal contacts that can occur between the upper and lower dentures.
**Why the Correct Answer is Right**
When a complete upper denture occludes against the natural lower anterior teeth, it is likely that the occlusal scheme is a non-rigid or semi-rigid occlusion. In this type of occlusion, the upper denture is not fully supported by the lower denture, and instead, relies on the natural teeth for support. This can lead to increased stress on the denture-bearing areas and potentially cause discomfort or instability for the patient.
To accommodate this type of occlusion, the clinician may find that the lower anterior teeth exhibit a specific type of wear or adaptation that allows them to function in harmony with the upper denture. This adaptation may involve a change in the shape or position of the teeth, such as a reduction in the anterior overjet or a change in the curvature of the lower incisors.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not accurately describe the clinical scenario presented. A non-functional occlusion would imply that the upper denture does not occlude against the lower anterior teeth at all, which is not the case.
**Option B:** This option is incorrect because it implies that the lower anterior teeth are not involved in the occlusion. However, the clinical scenario specifically states that the lower anterior teeth occlude against the upper denture.
**Option C:** This option is incorrect because it implies that the occlusion is rigid, which is not consistent with the clinical scenario presented.
**Clinical Pearl / High-Yield Fact**
In dentistry, the relationship between the upper and lower dentures is critical to the success of the prosthesis. A non-rigid or semi-rigid occlusion, such as the one described in this clinical scenario, can be challenging to manage and may require specialized treatment to ensure optimal function and comfort for the patient.
**Correct Answer:** D.