Although, teeth are rarely lost in this day and age, because of the efforts made to save them. There are a number of reasons why teeth may need to be removed.
Unsuccessful Root Canal Therapy
Where root canal treatment fails due to reasons such as :
- Persistent infection.
- Inadequate Root Canal Treatment.
- Diminished success rate of retreatment and related cost.
- Fractured roots.
- Fractured post and/or broken teeth at gum level.
The supporting bone around the teeth is lost to chronic gum disease and infection and teeth drift apart and become loose.
When teeth have been restored of filled heavily due to a lot of decay or due to severe wear and attrition.
Incorrect positioning :
Either severe malpositioning resulting in having to remove tooth and root.
Especially the upper lateral Incisor teeth or even other congenitally missing teeth. Dental Implant Therapy is the replacement of the lost root with an artificial root that is made of Titanium. This procedure can be used to replace one tooth, several teeth or all the teeth.
Tooth loss and what happens? Why replace missing teeth?
Your jawbone needs the chewing action of teeth to stimulate and keep it strong. Otherwise it will begin to disappear (atrophy) in the same manner that the unused muscles beneath a cast get smaller. Without the support of your teeth and facial bones, your face will begin to look prematurely. The good news is that tooth aged replacement with dental implants offers a solution to help prevent bone loss.
Dental Implants. How they work?
To understand how dental implants work, it is important to understand how a socket heals after a tooth extraction. Once a tooth is removed, the hole left in the bone get filled up with a blood clot. Bone grows into this clot from below and from the sides, and as the gum tissue only takes 6-8 weeks to close together, the bone continues to get formed in the socket and matures over a period of 6 months. Similarly healing of implants depends on this natural process.
Denture wearers can continue to wear their dentures throughout this time. In cases where a few teeth have been removed, and other teeth present, it is possible to construct a fixed temporary bridge to enable the patient to function.
There is, however, either no interruption or very little inconvenience to the patient’s lifestyle.
The second phase of treatment is usually commenced after 4 to 6 months, where if necessary the implant or implants are exposed and healing caps or temporary gum forming restorations attached. Following tissue healing within 2-4 weeks, final impressions are made, and the final definitive prosthetic replacements attached. Regular visits at 4-6 week intervals during healing are necessary to review and keep a check on healing, and also once the final restorations have been fitted, on a 3 monthly basis.
Implant Supported Fixed or Removable Prosthesis Single tooth replacement
Benefits of Implant Supported Crown
- Looks, feels and functions like a natural tooth
- Does not compromise adjacent teeth
- Preserves bone hygienically
- Prevents bone collapse
- Long term and stable
Multiple teeth replacement
Implants can also be used to replace several missing teeth, eliminating the need to grind down healthy adjacent teeth to serve as posts for traditional crown and bridge.The implants are placed in the bone below the gum tissue. Like single tooth replacement, temporary abutments may be placed on the implants until the healing phase is complete.After healing is complete, generally within 4-6 months, the abutments are attached to the implants, or impressions taken and custom abutments fabricated, and the dental laboratory will fabricate teeth either using porcelain fused to metal, or all ceramic crowns, and these are either screwed into the implants or cemented onto abutments.
Complete Lower/ Upper Tooth Replacement Supported Prosthesis(Removable )
If all your lower teeth are missing, 4-5 implants may be used to support a lower denture.
If all your upper teeth are missing, six or more implants may be used to support an upper denture.
The implants are inserted surgically below the gum and into the bone, and given time to fuse with the bone. Temporary abutments may be placed on the implants until the healing phase is complete. Your existing denture can be modified so that it may be worn without disturbing the implants during the healing process.
Upon completion of a custom made cast bar with cones is fabricated to fit precisely over the implants and your new Fixed/Removable prosthesis, veneered over this.
The new denture will have attachments which snap or clip it into place. Your teeth are firmly supported by the jaw, stimulating it and halting bone loss. You will be able to remove the denture easily for cleaning.
Research has shown that Implant-Supported Prosthesis increase patient comfort, and enhance quality of life.
Implant Supported Prosthesis ( Fixed )
If all your upper or lower teeth are missing, a permanent bridge may be attached directly to the plants. The number of implants is determined by the specific requirements of each case.
The implants are surgically places below the gum and into the bone and given time to fuse to the bone. Temporary healing abutments are placed over these implants and your existing dentures modified to fit over these, without disturbing the healing of the implants beneath.
Upon completion of healing, you are fitted with a custom bridge (Denture) that screws directly into the implants. The screw holes are covered after insertion.
Your new teeth are firmly supported by the jaw, stimulating it and halting bone loss. Your dentist will be able to remove the prosthesis when necessary for cleaning and maintenance.
Implant – Stabilized Denture
If all your lower teeth are missing, two to four implants may be used to stabilize a lower denture.
2 implants or 4 mini implants are placed surgically below the gum and into the bone and allowed to heal. These can often be loaded immediately depending on the stability attained during placement.
Ball-top posts are attached to the implants. Your old dentures may be modified to hold clips that snap over the ball-tops, or a new denture with clips will be made.
The denture is snapped into place, where it is retained by the implants and supported by the soft tissue. You simply snap the denture out for cleaning.