The problem posed to the yeast manufacturer, however, is not as simple as just adding air during the fermentation process. If the concentration of sugar in the fermentation growth media is greater than a very small amount, the yeast will produce some alcohol even if the supply of oxygen is adequate or even in abundance. This problem can be solved by adding the sugar solution slowly to the yeast throughout the fermentation process.
Human teeth are made up of four different types of tissue: pulp, dentin, enamel, and cementum. The pulp is the innermost portion of the tooth and consists of connective tissue, nerves, and blood vessels, which nourish the tooth.
1 To protect a weak tooth (for instance, from decay) from breaking or to hold together parts of a cracked tooth. 2  To restore an already broken tooth or a tooth that has been severely worn down. 3  To cover and support a tooth with a large filling when there isn't a lot of tooth left.  To hold a dental bridge in place.