A dental implant (also known as an endosseous implant or fixture) is a surgical component that interfaces with the bone of the jaw or skull to support a dental prosthesis such as a crown, bridge, denture, facial prosthesis or to act as an orthodontic anchor. The basis for modern dental implants is a biologic process called osseointegration, in which materials such as titanium form an intimate bond to bone. The implant fixture is first placed so that it is likely to osseointegrate, then a dental prosthetic is added. A variable amount of healing time is required for osseointegration before either the dental prosthetic (a tooth, bridge or denture) is attached to the implant or an abutment is placed which will hold a dental prosthetic/crown. (https://en.wikipedia.org/wiki/Dental_implant)

Types of dental implants

1. Endosteal dental implants

2. Subperiosteal dental implants

Endosteal dental implants:

Endosteal dental implants  refers to an implant that is "in the bone,"

Subperiosteal dental implants

subperiosteal  Dental implants refers to an implant that rests on top of the jawbone under the gum tissue. Subperiosteal implants are no longer in use today because of their poor long-term results in comparison to endosteal dental implants.

They protect facial bone and healthy teeth.Dental implants are the only tooth replacement option that actually helps stimulate bone growth and prevent bone loss. Getting dental implants as soon as possible after losing a tooth helps prevent bone loss at the site. Dental implants, a revolution in dentistry, are the perfect solution to replace missing teeth or stabilize loose dentures. Dental health is a crucial part of our general health. Whatever the age, we should have a healthy tooth. Correct dental care can help you to keep your teeth healthy for a lifetime.                              

The goal of teeth replacement in dentistry is to restore function as well as esthetics.
Dental implants can be used to replace a single tooth, several teeth, or all of the teeth.When it comes to tooth replacement, generally, there are three options:

1. removable dental appliance (complete denture or partial denture),
2. fixed dental bridge (cemented), and dental implant.
3. Dentures are the more affordable option for replacement teeth but are the least desirable because of the inconvenience of a removable appliance in the mouth. Furthermore, dentures can affect one's taste and sensory experience with food.

Dental bridgework was the more common restorative option prior to the relatively recent shift to dental implant treatment. The main disadvantage to bridgework is the dependence on existing natural teeth for support. Implants are supported by bone only and do not affect surrounding natural teeth. Deciding on which option to choose depends on factors like location of missing tooth or teeth, quantity and quality of the jawbone where the dental implant is to be placed,  health of the patient, cost etc.

1. Dental implants Improved appearance.
2. Dental implants Improved speech. 
3. Dental implants Improved comfort. 
4. Dental implants Easier eating. 
5. Dental implants Improved self-esteem. Dental implants can give you back your smile and help you feel better about yourself.
6. Dental implants Improved oral health. 
7. Dental implants Improving oral hygiene.
8. Dental implants Durability. 
9. Implants are very durable and will last many years. With good care, many implants last a lifetime.

The cost of an implant, abutment and crown is typically in the  Rs 16,000 to Rs 25000 range.
 Your costs will vary based on the unique circumstances of your case.