Final answer:
The claim that dental unit water lines shall be anti-retractive is marked as 'False' according to provided information, but this contradicts typical safety expectations. In practice, anti-retraction devices are commonly required to prevent contamination of the water supply in dental equipment.
Step-by-step explanation:
The question pertains to the requirement of anti-retractive devices in dental unit water lines. Anti-retractive devices are essential for preventing backflow, which can lead to the contamination of water lines with oral fluids during dental procedures. Anti-retractive mechanisms are a standard safety feature in dental equipment to ensure that water used in a patient's mouth does not contaminate the water supply for subsequent patients.
According to provided information, it is stated that dental unit water lines being anti-retractive is False (17. False). However, the context of this information is not clear, and in real-world applications, it is generally a requirement across various jurisdictions for such lines to have anti-retraction capabilities to maintain hygiene and safety standards. It's recommended to refer to specific state regulations or professional guidelines for detailed requirements.