Answer:

The bacteria found in a tooth scraping that are cock screw-shaped are referred to as spirilli.

Explanation:

Tooth scraping is a dental procedure that involves the removal of plaque and tartar from the surface of teeth. During this process, a dental professional uses specialized tools to scrape away the buildup of bacteria and debris that can accumulate on the teeth.

The bacteria that are commonly found in tooth scrapings can have various shapes and arrangements:

1. Bacilli: Bacilli are rod-shaped bacteria. They are typically found singly or in chains. This shape is not typically associated with the bacteria found in tooth scrapings.

2. Cocci: Cocci are spherical or oval-shaped bacteria. They can be found singly, in pairs (diplococci), in chains (streptococci), or in clusters (staphylococci). While cocci bacteria can be present in the mouth, they are not specifically associated with the cock screw-shaped bacteria mentioned in the question.

3. Spirilli: Spirilli are spiral-shaped bacteria. They have a helical or corkscrew-like shape, which gives them their characteristic appearance. These bacteria are commonly found in the oral cavity, including the teeth and gums. They can be responsible for certain dental infections and diseases, such as periodontal disease.

4. Helix: "Helix" is a term used to describe a twisted or coiled shape. While the term "helix" can be used to describe the shape of the cock screw-shaped bacteria, it is not a specific classification of bacteria itself. The bacteria mentioned in the question are more accurately referred to as spirilli.

In summary, the bacteria found in a tooth scraping that are cock screw-shaped are referred to as spirilli. These bacteria are spiral-shaped and can be commonly found in the oral cavity, including the teeth and gums.