The question of safety comes up at almost every implant consultation, and rightly so, because we are talking about surgery. The answer, however, is not just about the implant itself. Three things decide it: patient eligibility, the precision of the procedure and what happens afterwards.
This article explains what the safety of this method rests on and who is not eligible for the procedure. It then covers the healing process and a list of worrying symptoms that need prompt attention.
Are dental implants safe?
Dental implants are considered safe and effective, and implantology is one of the best-documented procedures in dentistry. That does not mean, however, that the procedure is risk-free or that it will work for everyone.
Safety rests on four pillars: thorough diagnostics before any decision, precise digital planning, the surgeon's experience and the patient's cooperation after the procedure. Weakening any one of them raises the risk of complications more than the fact of having surgery at all.
It is also worth separating two ideas that tend to merge into one in conversation. The implant surviving in the bone is one thing; keeping the aesthetic and functional result for decades is another. An implant can remain firmly in place, while the prosthetic work or the gum around it still needs correcting.
Biocompatibility: what the safety of dental implants rests on
Implants are made of medical-grade titanium or zirconium oxide. Both materials are biocompatible, which means the body does not treat them as a foreign body and does not trigger a defensive reaction. Allergic reactions to titanium are reported extremely rarely.
This property makes osseointegration possible, i.e. the biological fusion of the implant surface with the bone. Without it, a dental implant would simply be an object placed in the tooth socket, with no lasting connection.
At Flow Dental Studio we offer titanium implants in three variants, as well as zirconia implants, made to order. The choice of material depends on the bone conditions, gum thickness and aesthetic expectations, not simply on the patient's preference.
Contraindications to dental implants
Contraindications to dental implants are divided into absolute and relative. The assessment is based on your medical history and a CBCT scan, which we take with a NewTom Giano HR scanner.
Absolute contraindications
Absolute contraindications rule out implant surgery completely, at least for the time being.
- active cancer under treatment,
- chemotherapy or radiotherapy to the head and neck,
- intravenous bisphosphonates,
- severe blood clotting disorders,
- serious immune deficiencies, such as AIDS,
- severe mental illness that may make cooperation with the dentist during implant treatment impossible,
- being too young, before bone growth has finished.
Pregnancy is a temporary contraindication to implant surgery. The procedure is then postponed until after the birth and the end of breastfeeding.
Relative contraindications
This group does not close the door to treatment; it sets conditions that must be met first. This usually takes several weeks or months of preparation.
- uncontrolled diabetes, which hinders healing and increases the risk of implant rejection,
- advanced osteoporosis, which increases the risk of jaw bone necrosis after implant placement,
- untreated gum disease and gum inflammation,
- poor oral hygiene, which needs to be addressed before implant placement,
- insufficient bone in the jaw, which may need to be rebuilt first,
- bruxism, i.e. habitual clenching of the teeth, which can lead to damage to the implant,
- taking certain medicines, which requires a consultation before implant surgery,
- smoking.
A lack of bone does not rule out treatment. We carry out bone regeneration and sinus floor lifts, and the implant procedure itself is performed once the rebuilt base has healed.
Smoking reduces the chances of successful implant treatment by impairing the blood supply to the gums, and it has a negative effect on healing after the procedure. It is not an absolute contraindication, but it does genuinely change the prognosis.
Chronic illness and dental implants
A chronic illness on its own rarely rules out treatment. What matters is how well it is controlled and contact with your treating doctor.
With diabetes, what counts is stable blood glucose and the result of your glycated haemoglobin (HbA1c) test. With osteoporosis, the route by which the drugs are given matters: oral or intravenous. Patients with heart disease need a cardiology consultation, and those who have completed cancer treatment need the approval of their treating doctor and an appropriate interval of time. An individual approach is needed here, because two people with the same diagnosis can have completely different prognoses.
Healing after dental implant placement, step by step
Healing is divided into stages of different lengths. The first lasts a few days, the last a few months.
The first 48 hours after implant placement
Pain, swelling and bruising of the cheek are to be expected during this period. The advice comes down to a few simple rules.
- apply cold compresses to the cheek, in cycles of 10–15 minutes,
- take painkillers as advised and, where indicated, a course of antibiotics,
- eat cool, soft food for the first few days,
- avoid physical exertion, bending over and lifting,
- no smoking or alcohol,
- sleep with your head raised.
For the first 24 hours, do not rinse your mouth vigorously, so as not to dislodge the blood clot. After that, use the mouthwash recommended by the dentist, because oral hygiene is key to preventing infection.
Osseointegration, i.e. the integration of the implant with the bone
Osseointegration is the process of bone cells growing into the microporous surface of the implant. This creates a lasting bond that transfers chewing forces to the bone.
The process usually takes 3 to 6 months: less in the lower jaw and more in the upper jaw, because of the difference in bone density. During this time the implant must not be loaded, unless conditions allowed for immediate loading planned in advance.
Once it has been confirmed that the implant has integrated properly, it is uncovered and a healing screw is fitted to shape the gum. Only then is the prosthetic crown made.
How long does pain last after the procedure?
Pain after implant placement usually lasts 2 to 5 days; it is dull and gradually eases. It is at its worst in the first 24 to 48 hours after the anaesthetic wears off, as dental implants are placed under local anaesthetic.
You may also feel pain in a neighbouring tooth, caused by irritation of the area rather than damage to that tooth. It usually passes within a few days.
Throbbing pain is a different matter. It is not a normal sign of healing and can last up to 5 days if inflammation is developing. Pain that gets worse after 3 or 4 days instead of easing requires you to contact the dentist.
The most common complications after implant surgery
As with any surgical procedure, complications can occur, although with proper planning the risk is small. It is worth knowing the range of possible complications and when they may arise.
Inflammation of the tissues around the implant
Inflammation around an implant shows itself as severe pain and swelling, and if left untreated it can lead to peri-implantitis, i.e. inflammation that also involves the bone. Early symptoms can be subtle: gums bleeding when you brush, redness, bad breath.
Inflammation of the tissues around an implant resembles gum disease around natural teeth. Infections after implant placement can delay healing and, in advanced cases, mean the implant has to be removed. Early detection changes the prognosis dramatically, which is why regular check-ups with your dentist matter for as long as you have the implant.
Nerve damage and other complications
Nerve damage can cause altered sensation in the lower lip, chin or tongue. The risk mainly concerns the back part of the lower jaw, where the inferior alveolar nerve runs.
This is exactly what planning based on a CBCT scan and a surgical guide are for. Analysing the course of the nerves and the position of the sinuses before the procedure allows the implant position to be planned in advance, rather than judged during surgery.
Other common complications include prolonged bleeding, wound breakdown and local infection. General symptoms can include fever, swollen lymph nodes and general weakness.
Dental implant rejection: causes and how often it happens
Implant rejection is the everyday term for a lack of osseointegration, i.e. a situation in which the implant does not fuse with the bone. Despite what the word suggests, it is not an immune reaction to the material.
A failure to fuse can become apparent up to eight months after the procedure, although it is most often seen in the first few weeks. Early causes relate to bone quality, overheating of the bone during drilling or not following the aftercare advice. Late failures usually result from infection or overloading of the implant years later.
This kind of failure is rare, and if it does happen it does not close the door to treatment. Once the site has healed, and after bone rebuilding if needed, another attempt can be made.
Worrying symptoms: when should you contact the dentist?
Some symptoms need attention without waiting for a scheduled visit. If any of them appear, contact the dentist who performed the procedure straight away.
- any movement of the implant or the healing screw,
- throbbing pain that gets worse after 3 or 4 days,
- severe pain that does not respond to painkillers,
- fever with no other cause,
- pus discharge or increasing swelling around the surgical site,
- bleeding that does not stop,
- signs of implant rejection, which are pain, bleeding and fever occurring together.
Responding quickly to worrying symptoms helps prevent more serious complications. Many situations that end in the loss of the implant at an advanced stage can be brought under control without surgery if caught early.
How can you minimise the risk of complications?
Some factors lie with the team and some with the patient, and it is the latter that decide the outcome in the long term.
- a full and honest medical history before eligibility is assessed,
- a CBCT scan and digital planning of the implant position,
- treating tooth decay and inflammation before the procedure,
- thorough oral hygiene, because poor oral hygiene increases the risk of complications,
- not smoking after the procedure,
- following the dentist's advice on diet and physical exertion,
- regular check-ups and professional teeth cleaning.
Following your dentist's advice in the first few days has an impact out of all proportion to the effort it takes. Proper healing during this period pays off over the years that follow.
Do dental implants last a lifetime?
An implant that has fused properly with the bone has the potential to last for decades. It is not maintenance-free, however, and how long it lasts depends on certain conditions.
The crown itself wears faster than the implant, and after a dozen or so years you may consider replacing it, just as with crowns on natural teeth. The gum is a separate matter: its level changes over the years, which can be visible in the aesthetic zone.
It is therefore worth treating the result of implant treatment as a long-term solution that needs care, not as a closed chapter. An implant without check-ups and hygiene deteriorates just like a neglected natural tooth.
Patient questions
Can I have implants if I have Hashimoto's disease?
Yes, Hashimoto's disease is not an absolute contraindication. The condition is a stable hormonal state confirmed by tests and care from an endocrinologist.
Does the procedure hurt?
Implant placement is carried out under local anaesthetic, so you do not feel pain during the procedure. Discomfort appears once the anaesthetic wears off and is controlled with painkillers.
Are antibiotics always needed?
Not always. Antibiotics may be recommended after implant placement, especially after extensive procedures or those involving bone rebuilding, and the decision is made by the dentist who performed the procedure.
How long do I have to wait for the crown?
Usually 3 to 6 months from the day the implant is placed. In selected cases, immediate loading with a temporary restoration is possible, but this requires strict stability conditions to be met.
Can an implant fall out?
A properly integrated implant does not fall out on its own. Any movement always signals a problem and needs urgent assessment, because it may indicate a failure to fuse or advanced inflammation.
Can an implant be removed if it causes problems?
Yes, an implant can be removed, and this is sometimes necessary if it has not integrated or if there is advanced inflammation. The course of action is decided after assessing the bone, and once the tissues have healed further treatment can usually be planned.
What determines the outcome of treatment
Implant treatment is a predictable procedure when it is preceded by thorough eligibility assessment and followed by regular care. The material and technique themselves are necessary conditions, but not sufficient ones.
The greatest influence on the outcome comes from things you cannot see on an X-ray: hygiene, smoking, control of chronic illnesses and regular check-ups. These four things are what separate an implant that lasts for decades from one that needs intervention after a few years.
