Post dam position for maxillary complete dentures – the fovea palatini getting a good posterior seal

The posterior border of a maxillary complete denture is positioned at or around the position of the fovea palatini, by cutting a “cupids bow shaped” groove onto the master cast. The post dam groove extends from the right to the left hamular notches and beyond just into the buccal sulcus, enclosing the tuberosities and passing across the midline of the palate within 1 mm of the fovea palatini.

If the patient cannot tolerate this extension, the post dam position is brought forward (away from the soft palate) in the centre by cutting a new post dam on the definitive cast. It is important to maintain coverage of the tuberosities past the hamular notches into the buccal sulcus.

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