Told implants aren’t possible? Meet the Blackrock dentist who rebuilds the foundation first

Being told you aren’t a candidate for dental implants is not always the end of the conversation. At Seapoint Clinic in Blackrock, Dublin, patients who’ve been turned away elsewhere often find a different answer with Dr Thomas Linehan, a dentist whose practice is limited entirely to implants. As of June 2026, he treats the cases other clinics call impossible.

Here’s the thing most people aren’t told. “Not enough bone” is rarely a permanent verdict. It’s a starting point.

Why “you don’t have enough bone” isn’t the final word

When a tooth has been missing for a while, the jawbone underneath shrinks. It’s a quiet process, and it’s the reason so many people are told an implant won’t hold. The bone simply isn’t deep or wide enough to anchor one securely.

But bone can be rebuilt. That’s the part that surprises people.

Dr Linehan’s approach has been described in-house as “the architect” mindset: before anything goes above ground, the foundation has to be sound. His clinical focus sits squarely on the surgical groundwork that makes a long-lasting implant possible, including bone augmentation and sinus lifts. So when another dentist says no, what they often mean is “not without preparation first.” Seapoint does that preparation.

If you’d like to read more about this specific situation, the clinic has a dedicated page on low bone density and implants.

Who is Dr Thomas Linehan?

Depth over breadth. That phrase sums up his training.

Dr Linehan qualified with honours from Trinity College Dublin in 2001, then went further: a Diploma in Implant Dentistry from the University of Warwick, and a Master’s-level programme at the University of Essen-Duisburg in Germany. Rather than spreading himself across general dentistry, he chose to limit his practice to dental implants alone. Every working day is spent on one discipline.

That single-mindedness matters for difficult cases. A clinician who only places implants has seen more variations of the same problem than someone who does it occasionally between fillings and check-ups. When the bone is thin, when the sinus sits low, when a previous attempt failed elsewhere, those are the cases where a focused surgeon’s judgement earns its keep. His reputation has made Seapoint a destination for patients who arrive having already been told no somewhere else.

He also leads a wider implant and oral surgery team at the clinic, so a tricky case is rarely carried by one pair of hands alone. That depth of cover is part of why the difficult referrals tend to land here.

How bone is rebuilt before an implant

So what actually happens when there isn’t enough bone to work with? Broadly, there are a few routes, and the right one depends on where the gap is and how much bone has been lost.

• Bone augmentation, where grafting material is added to widen or deepen the ridge so an implant has something to grip.
• A sinus lift, used in the upper back jaw, where the floor of the sinus is gently raised to create room for bone to form.
• Socket preservation, done at the time a tooth is removed, which slows the shrinkage before it becomes a problem.

These aren’t shortcuts. They add time to the overall plan, and your body needs months to heal and form new bone before the implant goes in. But they turn a “no” into a “yes, with a bit of patience.”

The advantage of planning under one roof

This is where Seapoint genuinely differs from a standard practice.

The clinic runs an in-house dental laboratory, on-site CT scanning, and Digital Smile Design, with a multidisciplinary team across two Dublin buildings. For a complex implant case, that means the surgeon, the scan, and the lab are all in direct contact. No referral letters posted to a separate lab, no courier delays, no detail lost between people who’ve never met.

CT scanning is the part that removes the guesswork. A three-dimensional scan shows exactly how much bone is there, where the nerves and sinus sit, and precisely where an implant can go. Dr Linehan plans the surgery against that scan before he ever picks up an instrument. Measure twice, cut once, as the saying goes.

How a complex implant case usually unfolds

Every case is different, but the shape of it tends to follow a pattern.

For patients missing a full arch, Seapoint also offers fixed solutions built around this same careful groundwork. You can explore the full-arch implant options if you’re replacing many teeth at once.

What complex implant treatment tends to cost

Implant fees in Ireland vary a great deal with the work involved. A single implant with a crown commonly falls somewhere in the region of 2,000 to 3,500 euro. Cases that need bone augmentation or a sinus lift cost more, because there’s extra surgery, extra healing, and extra clinical time built in, and full-arch work runs higher again.

The honest answer is that nobody can quote your exact figure without seeing your scan. Your real cost is confirmed after your consultation, and you can review the clinic’s dental implant costs for a fuller picture before you visit.

FAQ

I’ve been told I don’t have enough bone for implants. Is that final?

Often, no. Bone loss is common after a tooth has been missing for a while, but it can frequently be rebuilt through bone augmentation or a sinus lift. Dr Thomas Linehan at Seapoint Clinic focuses on exactly these cases. A CT scan at consultation will show what’s actually possible for your jaw, rather than relying on an X-ray alone.

What is a sinus lift, and will it hurt?

A sinus lift creates space for bone in the upper back jaw by gently raising the floor of the sinus, so an implant has enough depth to hold. It’s a routine surgical step for experienced implant clinicians. You’re numbed throughout, and most patients describe the recovery as more manageable than they expected. Dr Linehan explains the whole process before anything begins.

Why see a dentist whose practice is limited to implants?

Because focus builds judgement. Dr Linehan places implants every working day rather than occasionally, so he’s seen far more variations of difficult cases than a general dentist would. That experience matters most when bone is scarce or the case is complex. Seapoint’s on-site CT scanning and in-house lab support that focused surgical work.

How long does a complex implant case take from start to finish?

When bone needs rebuilding first, expect several months rather than weeks. Bone preparation needs time to heal before the implant goes in, and the implant then needs three to six months to fuse with the bone before the final tooth is fitted. It’s a longer path, but it’s what gives the result its lasting stability.

Does Seapoint Clinic make the final teeth on site?

Yes. Seapoint has an in-house dental laboratory, which means your crown, bridge or denture is made in the same building where the surgery is planned. That keeps quality control tight and allows same-day adjustments. For complex cases, having the surgeon and the technician under one roof removes the communication gaps that cause delays elsewhere.

What to do next

If you’ve been told implants aren’t possible, the most useful next step is a proper assessment, including a CT scan, so you can see for yourself what your jaw can support. Dr Thomas Linehan will give you an honest answer, not a sales pitch.

Call Seapoint Clinic in Blackrock on +35301 284 2570, or arrange a visit through the online booking page.