Dr. Michael Pawlus
Periodontist · Sarasota
ICOI Fellow, ICOI Diplomate · AAP member
Home / Implants
Dental implants explained
Each topic is written from peer-reviewed studies and the specialty bodies, with the source under every fact.
Anatomy
Anatomy
The parts of an implant and how it joins the bone.
Anatomy Parts of a dental implant
A dental implant tooth has three parts: the implant body (fixture) in the jawbone, the abutment that rises through the gum, and the crown, bridge or denture on top. The FDA regulates implants and abutments as medical devices.
Anatomy Osseointegration: implant fusion with bone
Osseointegration is direct contact between living bone and the implant surface. It develops over weeks to months after the implant is placed.
Anatomy Jawbone changes after tooth loss
The bone that held a tooth shrinks after the tooth is removed, most in width and most in the first 3 to 6 months. The amount of remaining bone shapes implant planning and whether grafting is needed.
Materials
Materials
Titanium, zirconia and what the teeth on top are made of.
Materials Titanium implant grades and alloys
Most implants are made of commercially pure titanium or a titanium alloy. ASTM International standards set the composition and strength of titanium used in surgical implants.
Materials Titanium-zirconium alloy implants
Titanium-zirconium (Ti-Zr) alloy has higher tensile strength than commercially pure titanium and is used mainly for narrow implants. Clinical data are short term.
Materials Titanium vs zirconia implants
Zirconia (ceramic) implants are a metal-free option. Five-year data show high survival for one-piece zirconia implants, with far less long-term evidence than titanium.
Materials Abutment types
The abutment connects the implant to the tooth or bridge. Abutments differ by material (titanium, zirconia), by angle, and by how the crown attaches (screw or cement).
Materials Implant crown materials
Implant crowns are made of metal-ceramic (porcelain fused to metal), veneered zirconia, monolithic zirconia or lithium disilicate. Survival is similar across materials; the materials differ in chipping and fracture.
Materials Full-arch bridge and denture materials
Full-arch implant teeth are made of acrylic resin on a metal frame, metal-ceramic, or zirconia. Provisional (temporary) full-arch teeth in the All-on-4 consensus are acrylic.
Procedures
Procedures
Single teeth to full arches, grafting and guided surgery.
Procedures Single-tooth implant
A single-tooth implant replaces one missing tooth with one implant and one crown. Neighboring teeth are not used for support.
Procedures Implant bridge for several missing teeth
Several missing teeth in a row can be replaced by a bridge on two or more implants. The bridge does not rely on natural teeth for support.
Procedures Full-arch fixed teeth: All-on-4 and All-on-X
A full-arch fixed bridge replaces all teeth in one jaw and is fixed to four or more implants. All-on-4 uses four implants, which may include tilted implants; in All-on-X the X stands for a variable number of implants, commonly four to six.
Procedures Implant overdenture
An implant overdenture is a removable denture that clips onto two or more implants. Two-implant overdentures for the lower jaw are a consensus first-choice standard over conventional dentures.
Procedures Fixed vs removable full-arch teeth
People missing all teeth in a jaw can choose a bridge fixed to implants or a removable overdenture that clips onto implants. Patient-reported outcomes show no consistent difference; the prosthodontist leads planning of the final teeth.
Procedures Implant in a day: immediate load vs staged healing
Immediate loading attaches a tooth or bridge to the implant within a week of surgery. Staged (conventional) loading waits months for the bone to heal first. Randomized trials show similar first-year results when the case qualifies.
Procedures Implant placed at tooth extraction
Immediate placement puts the implant into the socket on the day the tooth is removed. It can be combined with immediate, early or conventional loading; each combination has its own level of evidence.
Procedures Bone grafting for implants
Bone grafting adds bone or bone substitute where the jaw is too thin or short for an implant. Grafts come from the patient, a human donor, an animal source, or synthetic material.
Procedures Socket preservation after extraction
Socket preservation (alveolar ridge preservation) places graft material in the socket when a tooth is removed. Randomized trials show it reduces the bone shrinkage that follows extraction.
Procedures Sinus lift
A sinus lift adds bone under the floor of the maxillary sinus so implants can be placed in the upper back jaw. It is done through a side window (lateral) or from below through the implant site (transalveolar).
Procedures Zygomatic implants
Zygomatic implants are long implants anchored in the cheekbone, used when the upper jaw has too little bone for standard implants. They can avoid bone grafting and allow teeth soon after surgery, with a higher complication rate.
Procedures Pterygoid implants
Pterygoid implants are placed in the pterygoid region at the back of the upper jaw. In the published series they mainly support full-arch fixed bridges, with 6-year survival similar to implants elsewhere in the jaws.
Procedures Mini implants
Mini implants are implants under 2.5 mm in diameter. A systematic review supports them for holding overdentures when standard implants are not possible; their survival is lower than standard-diameter implants.
Procedures Short implants
Short implants (6 to 8 mm or less) are used where bone height is limited, sometimes in place of a sinus lift or vertical graft. Survival is close to standard implants, with more variability for the shortest designs.
Procedures Guided implant surgery and CBCT planning
Guided surgery plans the implant position on a 3D CBCT scan and transfers the plan to surgery with a printed guide (static) or real-time tracking (dynamic navigation). Accuracy is within about 1 to 1.5 mm on average, and a 2 mm safety margin is recommended.
Procedures Robotic implant surgery
Robot-assisted implant surgery uses a robotic arm, guided by a digital plan, to control drill position, angle and depth while the surgeon operates. Short-term studies show high accuracy; long-term data are limited.
Procedures Digital workflow: scans, design and milling
A digital workflow replaces impression trays and stone models with intraoral scans, computer design (CAD) and machine fabrication (CAM). Evidence supports it for single implant crowns; data for larger bridges are thinner.
Procedures Anesthesia and sedation for implant surgery
Implant surgery is done with local anesthesia, with or without sedation or general anesthesia. In Florida, a dentist needs a Board of Dentistry permit to provide moderate sedation or general anesthesia.
Who does the work
Who does the work
The specialties that place and restore implants.
Cost and coverage
Cost and coverage
What changes the total. No prices are listed.
Cost and coverage What drives implant cost
Implant fees depend on how many teeth and implants are involved, the type of implants, added procedures to prepare the mouth such as grafting or a sinus lift, bone quantity and region. Imaging, provisional teeth, restoration material, sedation and long-term upkeep are further parts of the treatment plan.
Cost and coverage Insurance and Medicare coverage
Original Medicare does not cover dental implants or dentures in most cases. Some private dental plans cover part of implant treatment; coverage varies by plan.
Outcomes and risks
Outcomes and risks
Survival rates, complications and the conditions that change them.
Outcomes and risks Implant survival rates
Survival means the implant is still in the mouth at follow-up. The 10-year implant survival estimate from a 2019 systematic review of 18 prospective studies is 96.4 percent; a more conservative analysis gives 93.2 percent.
Outcomes and risks Implant complications
Implant complications are biological (gum and bone problems around the implant) or technical (loose screws, chipped porcelain, broken parts). Most technical events are repairable; they are common enough that regular checkups are part of treatment.
Outcomes and risks Peri-implantitis
Peri-implantitis is a plaque-associated inflammation around an implant with progressive loss of the supporting bone. Peri-implant mucositis is the earlier, gum-only stage and can be reversed.
Outcomes and risks Smoking, diabetes and implant results
Smokers have about twice the implant failure rate of non-smokers in pooled studies. People with diabetes had failure rates similar to people without it, with slightly more bone loss; control of the disease matters.
Outcomes and risks Gum disease history and implants
People who have had periodontitis (gum disease) can receive implants, with a higher risk of implant loss and peri-implantitis than people who have not. Regular maintenance visits are part of the plan.
Candidacy
Candidacy
Health, bone and habits that decide who can have implants.
Candidacy Medications and implants
Some medications change implant planning. Bone-strengthening drugs (bisphosphonates, denosumab) carry a small risk of jaw osteonecrosis, and AAOMS advises avoiding implants in cancer patients receiving these drugs by injection. Some antidepressants and acid reducers are associated with higher failure.
Candidacy Who is a candidate for implants
Most adults missing one, several or all teeth can be considered for implants. General health, bone, gum health, smoking and medications shape the plan; children with growing jaws are the main exception.
Recovery and care
Recovery and care
Healing, cleaning and check-ups after treatment.
Recovery and care Recovery after implant surgery
Swelling, bruising and some discomfort in the first days are expected. A soft diet, rest and follow-up visits are standard; the final teeth go on after the bone has bonded to the implant.
Recovery and care Implant care and maintenance
Implants need daily brushing and flossing plus professional checkups. A meta-analysis supports maintenance visits at least every 5 to 6 months, adjusted to each patient's risk.
Recovery and care Antibiotics at implant surgery
A single dose of antibiotic before implant surgery reduces early implant failures in randomized trials. Extra doses after surgery showed no added benefit in the trials reviewed.
About these articles
Sourced information
Every fact links to its source. General information about dental implants; treatment decisions are made with a licensed dentist.
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