How to have a pretty smile?

SOURCES:

Academy of General Dentistry: "Dental Erosion: Consume Pickles, Lemons and Soft Drinks in Moderation, " "Why Is Oral Health Important for Men?"
American Dental Association: "Buying Oral Care Products, " "A Healthy Mouth for Life, " "Braces and Orthodontics, " "Chewing Gum, " "Flossing."
Avinash S. Bidra, BDS, MS, board-certified prosthodontist, assistant program director, post-graduate prosthodontics, University of Connecticut Health Center.
Clemson Extension: "Acid, Acidified and Low-Acid Foods."
Cleveland Clinic: "What Teeth Whitening Options Are Available?"
Dentistry for You: "Porcelain Veneers."
Harvard Medical School: "Tooth-Bleaching: Better Left Up to a Dentist, " "Time for Tooth Whitening?" "Tooth-Bleaching: Better Left Up to a Dentist."
Kimberly Herrig, registered dental hygienist, Los Angeles, California.
Lakewood Family Dental: "Are Teeth Whitening Side Effects Worth the Bright Smile?"
Massachusetts Dental Society: "Not Just a Kid Thing."
Ohio State University Wexner Medical Center: "Brushing and Toothpaste."
Stanford University: "Home Remedies for Whiter Teeth."
Tufts University: "Which Is Better: A Manual Or Electric Toothbrush?"
University of Illinois: "Care."
University of Illinois Extension: "Strawberries & More."
University of Maryland Dental School: "Vital Tooth Bleaching: An Update."
University of Northern Iowa: "How to Brush: Is That How You Do It?
University of Rochester Medical Center: "The Best and Worst Foods for Your Teeth, " "What to Look for in a Toothbrush."
Wake Forest Baptist Health: "Teeth Whitening."
West Virginia University, WVU Extension Service: "For a Healthy Smile, Choose Foods Carefully."