Gaps in Teeth Treatment Options

Why gaps appear and why cause matters

Spacing may relate to tooth size (teeth too small relative to jaw size), missing teeth (a gap left by an extracted or congenitally absent tooth), gum health (attachment loss causing spacing), habits (tongue posture can hold the front teeth apart), bite pattern (open bite relationships where teeth do not contact), or previous orthodontic relapse after retainers were stopped. The cause affects whether orthodontic tooth movement alone is sufficient or whether restorative treatment is needed alongside it.

Treatment choices for gaps in teeth

Braces and clear aligners are both effective for closing spacing where the teeth themselves are of normal size. Fixed braces close gaps via archwire mechanics — the wire guides teeth together progressively. Clear aligners close spacing using a series of programmed tooth movements in each tray. For gaps caused by missing teeth, the options are different: the gap can be orthodontically closed (bringing surrounding teeth together), or space can be maintained and managed with an implant, bridge, or partial denture. Orthodontic space closure is often the most cost-effective long-term option for missing tooth gaps.

When composite bonding may be involved

If a midline diastema (central gap) or multiple small spacing cases involve teeth that are simply too narrow for the jaw, closing the gaps orthodontically may leave teeth that look too far apart or in the wrong proportions. In these cases, composite bonding or veneers to reshape the teeth after orthodontic closure is part of the combined plan. This is known as an interdisciplinary approach — orthodontist and restorative dentist working together. Discussing the full plan including the restorative phase at the outset prevents unexpected costs or disappointment after braces.

Frenum and frenectomy for midline gaps

A prominent labial frenum (the tissue connecting the upper lip to the gum between the front teeth) can physically hold a central gap open and prevent orthodontic closure from holding long-term. If this is identified, a frenectomy — a minor surgical procedure to release or reduce the frenum — may be recommended, typically after the gap has been closed orthodontically. Frenectomy before gap closure allows the frenum to reattach in the closed position; timing varies by clinical preference.

NHS eligibility for gap treatment

NHS orthodontics covers spacing treatment for eligible under-18s who score IOTN Grade 4 or 5. Significant spacing, particularly a large midline diastema or multiple spacing from missing teeth, may meet this threshold. NHS waiting lists in England are typically 2–3 years. Adults are not routinely eligible for NHS orthodontic treatment regardless of gap size.

Retention after closing gaps

Spacing cases carry a high relapse risk — the same biological forces that created or allowed the gaps to remain tend to push teeth back apart once braces are removed. Retainers are particularly important after gap closure. Fixed bonded wires behind both upper and lower front teeth are the most reliable protection. For a closed midline diastema especially, a fixed retainer behind the upper front teeth is strongly recommended rather than relying on a removable retainer alone.

Useful related pages

This guide is for general information only. It is not a diagnosis, treatment plan, or substitute for advice from a registered dentist or orthodontist.