What happens if the lingual bar is positioned too far from the tissue surface?

When the lingual bar is positioned too far from the tissue surface, it indeed causes discomfort to the tongue and can lead to plaque retention. The proper placement of a lingual bar is essential for comfort and functionality; if it is too high, the tongue may find it intrusive, resulting in irritation and discomfort during normal oral activities like speaking and eating. This discomfort can hinder the patient's ability to adapt to the denture effectively.

Furthermore, a poorly positioned lingual bar can create an environment where plaque and food debris can accumulate, as the space between the bar and the tissue becomes a trap for these materials. This can lead to oral hygiene issues, including increased risk of gum disease. Therefore, ensuring the lingual bar is placed correctly, close enough to the tissue surface, is crucial for patient comfort, effective retention, and maintaining oral hygiene.