Sinus Expansion Due to Missing Teeth
One of the consequences of losing top teeth, is that the sinus cavity will expand, causing several further problems, if not treated early. Let's take a look at the progression of sinus expansion after upper tooth loss:
Missing top teeth gives the sinus (which contains slight pressure) the opportunity to expand.
Over time, the Sinus expands
The maxillary sinus expands into the edentulous area, subsequently causing bone atrophy.
Cross Section view of sinus expansion
In this cross-section view, we can see bone loss from two different directions. Due to the sinus expansion, atrophy from both the tooth side and the sinus side sometimes leave only a paper thin sheet of bone between the maxilary sinus and the inside of the mouth.
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