If you choose to undergo a hollywood smile procedure, you won’t be disappointed. Results appear instantly and naturally, and you'll see a significant improvement in many facets of your smile, from the way they are positioned to their pearly sheen and ideal measurements. This long-lasting smile can stay with you for at least 15 years. How long your Hollywood smile lasts depend on the durability of any veneers, crowns, or dental implants you have placed on your teeth and on maintaining a proper dental care routine.