bacteria in the mouth comes from saliva.
bacteria in the mouth comes from saliva.
where does bacteria in the mouth come from?
saliva
numerous kinds of bacteria grow in the mouth. “they are competing for food and places to grow” and the many hard surfaces in the mouth provide an ideal place for bacteria and biofilms to grow and reproduce. unlike most other places in or on the body, the mouth does not desquamate (shed). a tooth's distinct surface and stagnant nature makes it optimal for populations and growth of micro-organisms and bacteria, resulting in dental plaque. to grow and flourish in the mouth, biofilms go through four main stages of growth. first, bacteria must be deposited from saliva onto a surface where it can attach. then the bacteria, or micro-organisms, grow and replicate. since bacteria can grow exponentially in short periods of time, it can quickly and easily create biofilms. third, the biofilm matures and accumulates more mass on the surface. bacteria can continue to divide and grow by binary fission until nutrients begin to run out or their growth is inhibited. when this happens there is the final stage, the dispersal or detachment, causing the death of the bacteria. some oral bacteria, "streptococcus gordonii" for example, cannot last for long periods without nutrients, while other types of bacteria can survive for weeks. while in their prime, biofilms can cause major damage to a person's teeth and gums. though damaging, biofilms can be partly removed by brushing and flossing and “some of it comes off with rinsing or eating.” we never really lose all of it because it is constantly being replenished by our own saliva. bacteria can then reattach and start to grow and the cycle continues. bacteria and its growth are two of the principal components of oral ecology.
oral ecology
pulcinella was raised by two "fathers", maccus and bucco, who were as different as two parents could be. maccus is described as being terribly witty, sarcastic, rude, and cruel, while bucco is a nervous thief who is as silly as he is full of himself. this duality manifested itself in both the way pulcinella is shaped and the way he acts. physically, the characteristics he inherited from his fathers attributed to his top-heavy, chicken-like shape. he inherited his humpback, his large, crooked nose, and his gangly legs from maccus. his potbelly, large cheeks, and gigantic mouth come from bucco. due to this duality of parental lineage, pulcinella can be portrayed as both a servant and master depending on the scenario. "upper" pulcinella is more like bucco, with a scheming nature, an aggressive sensuality, and great intelligence. "lower" pulcinella, however, favors maccus, and is described by pierre louis duchartre as being "a dull and coarse bumpkin." this juxtaposition of proud, cunning thief from the upper class and loud, crass pervert from the servant class is one that is key to understanding pulcinella's behaviors.
pulcinella