Help please? what if overcrowded bottom teeth are left untreated?

Periodontal problems: Overcrowding of either bottom or top teeth create conditions that make it more conducive to developing periodontal disease and early loss of teeth. Today, more adults are being treated with clear aligners like invisalign very successfully and efficiently. Seek the help of a qualified general dentist or orthodontist who is enthusiastic about invisalign technique to help keep your teeth for life!

Not a big deal: Ideally, human teeth would line up as the keys on a piano. However, many people must contend with crooked teeth, crowded teeth, or poorly aligned bites. Crowded teeth can be difficult to clean, making tooth decay and gum disease. If you religiously brush, floss and get professional cleaning 2x a year, the problem can be solved. The orthodontic treatment is also available at any age.

Keep clean: As long as you do good job keeping them clean you should be ok the only concer is inflammation that can lead to other issue.

Increased risk: Crowded lower front teeth means greater risk of damage to the teeth and to the supporting tissues. Often lower anterior crowding is just the tip of the iceberg, just an indication that there are other malocclusion problems. Would be advisable to consult with an orthodontic specialist, then you can make a decision based on a discussion of your individual needs.

Nothing to Serious!: That's a very tough question to answer not being able to examine you. Some patients never have a problem with crowded teeth, especially when they remain healthy and maintain great oral hygiene the rest of their lives. Others end up with extensive decay, periodontal disease and loss of teeth. I can't tell you which category you will be in. Straight teeth are generally a less risky\better choice.