Not Medical Advice: Yes, posterior alveolar vein works to drain blood from the molars and gums.
The alveolar veins include the inferior alveolar vein and the posterior alveolar vein. Both of these veins are also considered dental veins.
The inferior and posterior alveolar veins are arranged in a network of veins, allowing them to empty blood out into a series of veins and muscles, including the pterygoid muscles, which serve as tributaries (drainages) for the facial vein.
Gum, also called gingiva, plural gingivae, in anatomy, connective tissue covered with mucous membrane, attached to and surrounding the necks of the teeth and adjacent alveolar bone. Before the erupting teeth enter the mouth cavity, gum pads develop; these are slight elevations of the overlying oral mucous membrane.
When tooth eruption is complete, the gum embraces the neck region of each tooth. As well as being attached to adjacent alveolar bone, gum is connected to the cement of each tooth and to the tooth enamel.
Healthy gums are critical for good oral health and a great smile. Taking a little time each day to brush, floss and take care of your gums will go a long way in preventing dental problems down the road. Check out these 7 tips for healthy gums and a great smile shared by Lifehack.org.