The opposite problem: more arch than teeth, so gaps open — most often the one between the upper central incisors.
What it is
A midline diastema in an adult is usually a mismatch between tooth size and arch size, sometimes held open by a thick labial frenum. Closing it is straightforward; keeping it closed is not, because the tissue that opened it is still there. That is why every spacing case here leaves with a bonded retainer, and why we say so before you start rather than after.
Generalised spacing / midline diastema — the plan
- Records, and a frenal assessment if the gap is central.
- Aligner therapy — spacing closes predictably with trays, which is not true of every fault.
- A bonded retainer behind the closed space. This is not optional.
| Clinical name | Generalised spacing / midline diastema |
|---|---|
| Appliance | Clear aligners |
| Typical duration | 6 to 11 months |
| From | £1,950 |
| Retention | Included — bonded lower, removable upper, two years of reviews |
Next step
A consultation is £65 and includes photographs, a scan and a lateral cephalogram, plus a written plan with the fee on it. Nothing is started on the day.
Other faults
- Crowding — Arch-length deficiency
- Rotated teeth — Axial rotation
- Deep bite — Increased overbite / curve of Spee
- Midline discrepancy — Dental midline deviation