This is a test of commonsense with single/multi-choices. Complete the next sentence:

How to find affordable dental treatment
Visit regularly.
Regular and effective dental treatments are extremely significant in order to ensure the overall health of teeth and gums. One of the biggest concerns for people is the discoloration of their teeth.

Choices:
1). Implanting a device near the gum line releases urine, thus charting where teeth will form before the gums. It also engages the extremities, which in turn improves mobility in the mouth.;
2). A poor diet and poor dental hygiene can very negatively affect the quality of dental treatment. These things can reduce the nutritional value of good dental care.;
3). This occurs primarily for a number of reasons like increased consumption of alcohol, smoking habits and caffeine intake. Make sure that you visit your dentist at regular intervals of time.;
4). Dental treatment often includes procedures like corrective surgery, doctors' visits and dental board exams. Dentists often need to continuously test and sterilize teeth to ensure appropriate dental care.;
The answer is:
3).