In figure 1 above, the more electronegative Oxygen atoms pull electron density towards themselves as demonstrated by the arrows. Carbon Dioxide is not polar however because of its linear geometry. A molecule's overall dipole is directional, and is given by the vector sum of the dipoles between the atoms.
There are a number of factors that can cause your gums to recede, including: 1  Periodontal diseases. 2  These are bacterial gum infections that destroy gum tissue and supporting bone that hold your teeth in place. 3  Gum disease is the main cause of gum recession.
Gingivitis (inflammation of the gums) often does not cause any immediate symptoms. Yet it may spread to other parts of the periodontium (the bone and soft tissue responsible for keeping our teeth firmly anchored) and cause damage there.This is called periodontitis.ingivitis (inflammation of the gums) often does not cause any immediate symptoms. Yet it may spread to other parts of the periodontium (the bone and soft tissue responsible for keeping our teeth firmly anchored) and cause damage there.