Final Answer:
The false statement about indirect pulp caps is D. The prognosis of indirect pulp cap treatment is not poorer than that of direct pulp caps.
Step-by-step explanation:
Indirect pulp capping is a dental procedure used to treat deep carious lesions approaching the pulp without exposing it. The false statement is option D, which claims that the prognosis of indirect pulp cap treatment is poorer than that of direct pulp caps. This is inaccurate. In fact, studies and clinical experience suggest that the prognosis for indirect pulp caps is generally favorable, comparable to or even better than that of direct pulp caps.
When performing an indirect pulp cap, it is essential to leave some leathery caries in the preparation (option A). This is because complete caries removal in deep lesions may risk pulp exposure. Additionally, using a liner in the excavation (option B) is a common practice to provide additional protection and enhance the success of the indirect pulp cap. However, waiting 6-8 weeks before re-entry (option C) is not a standard requirement. The timing for re-entry depends on the clinical situation, and prompt follow-up may be necessary in some cases to ensure optimal outcomes.
In conclusion, while options A, B, and C align with established principles of indirect pulp capping, option D is false. The prognosis of indirect pulp caps is not inherently poorer than that of direct pulp caps, and successful outcomes can be achieved with appropriate case selection and meticulous technique.