Best dental implant in Kovilambakkam Dental Implants This treatment is also known as Tooth or Dental Implant. A natural tooth consists of a crown (the part you see above the gum), and the root (the part hidden under the gum within the jawbone which is only visible in a dental radiograph). When a person has a missing tooth, the dentists have to restore the tooth that comes with a supportive root under the gums.