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What does an excessively thick buccal flange indicate in denture fitting?

Poor retention

An excessively thick buccal flange in denture fitting primarily indicates poor retention. This is because a thick flange can interfere with the natural contours of the denture base, leading to inadequate adaptation to the underlying soft and hard tissue of the oral cavity. When the flange does not fit well, it may prevent the full seating of the denture, which is crucial for ensuring the suction and stability required for retention. A well-adapted denture should hug the contours of the gums and surrounding tissues tightly; therefore, an overly thick flange suggests that the denture will not stay in place properly during function, leading to discomfort and potential movement while chewing or speaking.

While other factors such as aesthetics and speech might be affected by excessive thickness, the primary issue regarding function and stability is related to retention.

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Full seating of the denture base

Improper aesthetics

Speech difficulties

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