Could invisalign or clearsmile bring teeth forward and downward for a full smile?

Challenging: Invisalign can only tip and slightly shift teeth. Moving teeth forward and down probably will require braces. Please consult with an orthodontist.

Maybe: Generally clear aligner therapy is not as effective as traditional orthodontics for the movements you describe, but it is possible depending on how far downward and forward they need to come.

Maybe: The use of clear aligner treatment may achieve the goals you describe for your smile; however, the only way to determine this is by seeking an opinion from your licensed orthodontic specialist.

PROBABLY NOT: Extrusion of teeth with aligner therapy is difficult at best. When you are trying to move teeth in the same direction as insertion of the appliance, you lose the purchase on the tooth and it doesn't extrude. Attachments are used to augment, but are unpredictable. Braces will be your best bet for sure.

Invisalign: Invisalign has really great attachments to move your teeth down. That would be my first recommendation. How far you can bring your teeth forward depends on where your lower front teeth are.

Depends: Depends on severity of your overall malocclusion. Clear aligners are about half as effective as braces, usually take longer, and cost more. See an Orthodontic Specialist to questions about malocclusion correction.