Which of the following statements about immediate replacement dentures is false?

The assertion that immediate replacement dentures require a try-in stage is misleading; in fact, immediate dentures are typically fabricated in advance of tooth extraction. The manufacturing process involves creating the denture based on preliminary impressions of the patient's mouth taken before the old teeth are removed. Consequently, once the teeth are extracted, the immediate denture can be placed right away without a trial fitting.

The absence of a try-in stage is significant because immediate dentures are designed for quick application after the loss of teeth and aim to minimize the patient’s discomfort and aesthetic concerns immediately following extraction. This expediency is integral to their purpose, differentiating them from conventional dentures, which typically undergo a try-in process to ensure fit and comfort prior to the final placement.

The other statements are accurate: immediate dentures can indeed replace multiple teeth and often need to be replaced within a relatively short duration as the underlying bone and gum tissues change after extraction. While an impression is necessary for their initial construction, it is the lack of a try-in stage that distinguishes the nature of immediate dentures.