If you grind or clench your teeth, that matters for implant treatment in ways that are not obvious. It rarely rules implants out. It does change how a case is planned and what maintenance it needs.
Dr. Jin-Ho Cho at Shine Dental Newington — BDS (University of Sydney, 1987), more than 35 years in practice, over 9,000 implant fixtures placed — checks for signs of grinding at consultation, because the evidence is often visible before the patient is aware of it.
Why does grinding affect implants differently?
A natural tooth is not rigidly fixed in bone. It sits in a socket suspended by the periodontal ligament, a layer of fibres that allows a fraction of a millimetre of movement. That ligament does two things: it cushions load, and it carries nerve endings that tell your brain how hard you are biting.
An implant has neither. It is fused directly to bone. There is no cushioning layer and no feedback mechanism.
The practical consequences: forces transmit more directly into the bone and the components, and you cannot feel that you are overloading an implant the way you would sense it on a tooth. Someone who grinds heavily may apply loads to an implant that they would unconsciously back off from on a natural tooth.
What can go wrong?
Problems from sustained overload tend to appear at the weakest point in the assembly:
- Chipping or fracture of the crown material, particularly with porcelain surfaces.
- Screw loosening. The screw holding the restoration to the implant can work loose under repeated lateral force. It is usually retightened, but recurrent loosening signals a loading problem rather than a faulty screw.
- Component fracture, less common but more involved to fix.
- Bone loss around the implant over time under sustained excessive load.
- In severe cases, loss of the implant.
Natural teeth are not spared either — grinding causes wear, cracks and sensitivity across the mouth. Implants simply have less tolerance for it.
How do I know if I grind?
Many people do not, because it mostly happens during sleep. Signs a dentist looks for:
- Flattened, worn biting surfaces, especially on canines and front teeth.
- Small cracks in enamel.
- Notches at the gum line where teeth flex under load.
- A ridged line on the inside of the cheeks, or scalloped edges on the tongue.
- Enlarged jaw muscles at the angle of the jaw.
- Morning jaw ache or headache, or a partner noticing the sound.
Stress, sleep disturbance and certain medications are associated with bruxism. If sleep apnoea is suspected, that is worth investigating with your doctor, since the two often occur together.
How does treatment planning adapt?
Where grinding is identified, several adjustments are commonly considered.
More implants, or wider ones, to distribute load. Spreading force across more fixtures reduces what any single one carries.
Material choice. Monolithic zirconia is more resistant to chipping than layered porcelain, which is one reason it is often selected for patients who grind. Our article on All-on-X materials compares the options for full-arch cases.
Bite design. The way the restoration contacts the opposing teeth can be shaped to reduce sideways forces, which are more damaging than straight vertical ones.
Screw-retained rather than cemented restorations where the case allows, so that a loosened screw can be retightened without destroying the crown.
A longer healing period before loading in some cases.
Is a nightguard necessary?
Where bruxism is present, an occlusal splint worn at night is usually recommended as part of the treatment rather than as an afterthought. It does not stop grinding — the habit is neurological — but it absorbs and redistributes the load so the guard wears rather than the restoration.
This is worth being clear about at the quoting stage: it is a component of the treatment plan, with its own cost, and it needs periodic replacement as it wears. A guard that lives in a drawer protects nothing.
What if I already have implants and grind?
Raise it at your next review. Practical things that help:
- Have the bite checked. Contacts change over time as teeth wear and move.
- Have a guard made or replaced if the existing one is worn through.
- Report any looseness or clicking from a restoration rather than waiting.
- Keep to your maintenance interval, since bone levels around implants are monitored by comparing radiographs over time.
Our guide on caring for implants covers the routine, and peri-implantitis covers the gum side.
The realistic position
Grinding is common and manageable. Many people who grind have implants that serve them well for years, provided the case is planned with the loading in mind and a guard is actually worn.
What does not work is treating bruxism as irrelevant. Individual outcomes vary, and the assessment exists to establish what your particular bite demands.
Arranging an assessment
Planning includes a CBCT scan taken on site and a written, itemised quote with item numbers before anything is booked. Consultations run in English or Korean. HICAPS on-the-spot claiming is available, and the practice is a CBHS and NIB preferred provider.
Call (02) 9748 4822, mobile 0430 442 018, or send an enquiry.