Dental implants can be placed in patients of any age (with fully developed jawbones), provided that they have a sufficient quantity and quality of bone tissue available. Most healthy individuals that maintain a good oral hygiene program are suitable candidates for dental implants. Circumstances where implants may not be suitable, or situations that have an increased risk of implant failure, include:

• Heavy smoking - this slows down and hinders the healing process.
• Excessive alcohol intake - disrupts healing of the gums. 
• Periodontal gum disease - all active gum disease must be treated prior to any implant procedure to ensure the long-term success of any treatment. Periodontal disease is a major cause of bone loss, which would hinder the success of any implant procedure.
• Immuno-compromised individuals (steroids, auto-immune disease, patients undergoing radiation treatment).
• Teeth grinders (bruxism) - a night-time splint can be given to treat this.