Dental caries, pit and fissure surfaces, with penetration to dentin:

Which of the following is a common age-related change in the respiratory system of geriatric patients?

A) Smaller, narrower airways B) Excessive mucus production C) Reduced strength and endurance of respiratory muscles D) Trouble remembering to breathe

The recommended time to properly clean the facial, lingual, occlusal, and incisal surfaces of teeth is ___________

a. 30 to 45 seconds b. 1 to 2 minutes c. 2 to 3 minutes d. 5 minutes