As long as your mouth is healthy, cosmetic dentistry can fix most cosmetic issues. For example: 

• Teeth whitening can brighten your smile. 
• Invisalign can straighten crooked teeth or correct your bite. 
• Dental veneers can address chipped, cracked, or discolored teeth, as well as address any shaping issues. 
• Dental implants can replace missing teeth.  

However, it is important that your mouth is healthy first. So, it’s possible hygiene issues would need to be addressed first.