Implants without bone grafting – is that possible?
Short and narrow implants, tilted implants, the internal sinus lift and anchorage outside the jaw ridge: which routes use the bone that is there, why bone is more often lacking in the upper jaw and when grafting is the better choice.
Often yes. Too little bone does not necessarily mean that grafting has to come first – there are several ways of using the bone that is there: shorter or narrower implants, implants placed at an angle, anchorage in the hard bone of the palate or, in the upper jaw, lifting the floor of the sinus through the implant channel itself. Which route is an option is shown by a three-dimensional image. Neither “always possible” nor “not possible” can be said in general terms.
Why bone is more often lacking in the upper jaw
The upper jaw is softer by nature than the lower, and above the back teeth lies the maxillary sinus. If a tooth is missing there for a long time, the bone recedes and little height is left between the ridge and the sinus. That is precisely the most common reason why grafting is discussed in the upper jaw – and also the region for which most alternatives have been developed.
Short and narrow implants
The most obvious solution is an implant that fits the bone that is there. Short implants need less height, reduced-diameter ones less width. Both have been in use for years and are well documented for particular situations; their load-bearing capacity is lower, so the position in the jaw decides whether they hold. Where they do, they spare a second procedure and months of waiting.
Implants placed at an angle
Bone is not evenly distributed. Placing an implant at an angle rather than vertically can use a longer stretch of firm bone and avoid the sinus. In a toothless upper jaw that is the basis of restorations on four implants: straight at the front, tilted at the back. The construction above connects all the implants and distributes the forces.
The internal sinus lift
When only a few millimetres of height are missing, the floor of the sinus can be lifted from below, through the same channel the implant goes into. That is a small procedure, often in the same session, and something different from the major graft with its own access from the side. Technically it is a graft – for the patient it feels like an ordinary implant placement, with no second appointment and no months of waiting.
Anchorage outside the jaw ridge
For pronounced bone loss there are procedures that seek hold where hard bone remains – in the region of the palate, for example, or in the load-bearing pillars of the facial skeleton. These are procedures for special cases that require experience and careful three-dimensional planning. They are an option where grafting is not possible or not wanted, and belong in the hands of a practice that performs them regularly.
When grafting is the better choice
Avoiding a graft is not a value in itself. Sometimes it is the shorter route to a durable result: when the ridge is so narrow that an implant would not be enclosed by bone; when the restoration would otherwise not sit in the right place; or when, in the visible region, the gum recedes without bone beneath it. A graft costs time, but an implant in the wrong place costs more.
What the decision rests on
Whether it can be done without grafting cannot be read off a chart, and certainly not settled by telephone. What is needed is the height and width of the bone at exactly the spot where the implant is to stand, plus the position of the sinus and the nerve. That is what the three-dimensional image is for – and why, where bone is scarce, it is not an extra but the basis.
What to clarify in the consultation
Anyone offered treatment “without bone grafting” should know four things.
- How much bone is actually present at the planned site?
- Which procedure replaces the graft, and how is it documented?
- What happens if it turns out during the procedure that grafting is needed after all?
- What does the graft cost in that case, and is it in the plan?
Who can judge this
Scarce bone is the case in which experience and diagnostics make the greatest difference. The directory on this portal lists practices with a focus on implantology – by location and qualification, without ranking and without rating.
Answered briefly