When working with a visible light-cure unit,
the dental unit light must be turned to the off position.
a face shield must be worn.
protective eyewear is not necessary.
protective visible-light eyewear is required.
protective visible-light eyewear is required.
Rationale: protective visible light eyewear is required.
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Glaucoma is six times more common in people older than age:
A. 30 B. 40 C. 50 D. 60
Blood supply of the hypothalamus is provided by branches of the
a. Anterior cerebral artery b. Posterior cerebral artery c. Both the anterior and posterior cerebral arteries d. Vertebrobasilar system
Because of the thin-walled thorax in an infant or child:
A. blunt trauma to the chest is easily identifiable by external injury. B. multiple rib fractures occur with greater frequency in children. C. breath sounds are easily transmitted to all areas of the chest. D. it is easier to assess them for a pneumothorax or hemothorax
What are the four types of habitats that reptiles live in?