Implantology – Dental Implants Explained
Implantology is a specialized field of dentistry focused on the placement of artificial tooth roots (implants) into the jawbone to replace missing teeth.
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Implantology is a specialized field of dentistry focused on the placement of artificial tooth roots (implants) into the jawbone to replace missing teeth.
What is Implantology?
Implantology is a specialized branch of dentistry and oral and maxillofacial surgery that deals with the planning, placement, and aftercare of dental implants – artificial tooth roots that are surgically inserted into the jawbone. The goal is to provide a long-lasting, functional replacement for missing teeth without compromising adjacent healthy teeth.
Indications – When Are Implants Used?
Dental implants may be indicated in several clinical situations:
- Single tooth gaps caused by tooth loss due to decay, trauma, or periodontitis
- Multiple missing teeth as an alternative to a dental bridge
- Complete tooth loss (edentulism) as an alternative to full dentures
- Improved retention of removable dentures (implant-supported prostheses)
How Do Dental Implants Work?
A dental implant typically consists of three components:
- Implant fixture: A titanium or zirconia screw inserted into the jawbone, acting as an artificial tooth root
- Abutment: A connector piece between the implant and the prosthetic restoration
- Crown: The visible, tooth-colored restoration made of ceramic or zirconia
The implant fuses with the jawbone through a biological process called osseointegration, during which bone grows directly onto the implant surface, providing stable and lasting anchorage.
Implantology Treatment Process
1. Diagnostics and Planning
Before the procedure, a thorough examination of the jaw is performed, often using a cone beam computed tomography (CBCT) scan or an orthopantomogram (OPG). Bone height, bone width, and the positions of nerves and blood vessels are assessed.
2. Surgical Procedure
Implant placement is typically performed under local anesthesia. The dentist or oral surgeon drills a cavity into the jawbone and inserts the implant. Depending on the number of implants, the procedure usually takes between 30 and 90 minutes.
3. Healing Phase
After implant placement, osseointegration begins. This healing phase typically lasts two to six months, depending on bone quality and the general health of the patient.
4. Prosthetic Restoration
Once osseointegration is complete, the abutment is attached and the final crown or prosthesis is placed.
Bone Grafting and Augmentation
If insufficient bone volume is available, a bone augmentation procedure may be carried out before or simultaneously with implant placement. Autologous bone, bone substitute materials, or membranes are used to create adequate bone volume for stable implant anchorage. Common techniques include the sinus lift procedure in the upper jaw and guided bone regeneration (GBR).
Risks and Complications
Implantology is considered a safe and well-established procedure. However, the following complications may occur:
- Implant failure: The implant does not integrate into the bone (early or late peri-implantitis)
- Peri-implantitis: An inflammatory condition affecting the tissue surrounding the implant, similar to periodontitis
- Nerve damage: Temporary or permanent numbness in the lower jaw or lip area
- Infections following the surgical procedure
- Bone loss around the implant
Prerequisites and Contraindications
Not every patient is a suitable candidate for dental implants. The following factors may contraindicate implant placement:
- Severe systemic conditions such as uncontrolled diabetes mellitus
- Use of bisphosphonates (for osteoporosis), as these can impair bone healing
- Active periodontitis or heavy smoking (increased risk of peri-implantitis)
- Insufficient bone volume without the possibility of augmentation
- Incomplete skeletal growth (in adolescents)
Success Rates and Long-Term Outcomes
Dental implants are among the most successful treatments in modern dentistry. With appropriate patient selection and good oral hygiene, ten-year survival rates exceed 90–95%. Regular follow-up appointments with a dentist are essential for the long-term preservation of implants.
References
- German Society of Implantology (DGI): Guidelines and patient information on implantology, www.dgi-ev.de
- Brånemark PI et al. – Osseointegrated implants in the treatment of the edentulous jaw. Experience from a 10-year period. Scandinavian Journal of Plastic and Reconstructive Surgery (1977)
- Pjetursson BE et al. – A systematic review of the survival and complication rates of implant-supported fixed dental prostheses. Clinical Oral Implants Research (2012)
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