National Dental Assisting Examining Board (NDAEB) Practice Exam

When operating a model trimmer, protective eyewear is essential for safeguarding the eyes from flying debris or particles that can occur during the trimming process. The machine works by rapidly cutting through materials, which can create small chips or splinters that may be propelled toward the operator. Without adequate eye protection, there is a risk of eye injury, including scratches, irritation, or more severe trauma.

While other protective items such as face masks, ear protection, and gloves can be beneficial in certain situations, they do not specifically address the immediate hazards associated with the operation of a model trimmer as effectively as protective eyewear does. For instance, a face mask may help in filtering dust but does not offer eye protection. Similarly, ear protection may be necessary if noise levels are high, but that does not mitigate the risk of eye injuries. Protecting one's hands with gloves could be useful to some extent, but they would not prevent accidents related to eye exposure. Thus, protective eyewear is the most critical piece of personal protective equipment when using a model trimmer.