Bonding to close gaps between teeth — when bonding is enough and when orthodontics is better

Key facts

• Bonding suits small, stable gaps
• Large gaps usually need orthodontics
• New or widening gaps may signal gum disease
• Tooth proportions guide how much to add
• Combining orthodontics and bonding is common

Why gaps appear between teeth

Gaps can form when teeth are small relative to the jaw, when a lateral incisor is undersized or missing, or when a large lip frenum (the band of tissue above the front teeth) holds the teeth apart. Habits such as tongue thrusting or thumb sucking in childhood can push teeth forward. In adults, new or widening gaps can be a sign of gum disease and bone loss, which allows teeth to drift and fan out. Missing back teeth can also cause front teeth to shift. Because the cause affects the solution, the first step is always to understand why the gap is there and whether it is stable.

When bonding is enough

Bonding works best when the gap is small, the teeth are otherwise well aligned, the bite is healthy, and adding width will keep the teeth in pleasing proportions. In that situation, resin is added to the side of one or both teeth next to the gap, shaped and polished so the teeth meet at a natural contact point. It is usually done in one visit with little or no removal of enamel and can be reversed or modified later. Spreading the added width across several teeth can help avoid making any single tooth look too wide. Bonding is also useful to refine small spaces after orthodontics.

When orthodontics is the better choice

If the gap is large, closing it with bonding alone would make the teeth look unnaturally wide or square. Orthodontic treatment — clear aligners or braces — moves teeth together and can redistribute space evenly, often producing a more natural result. Orthodontics is also preferable when gaps come with crowding elsewhere, protruding teeth, a deep bite, or when teeth have drifted because of gum disease (once the gums are stabilised). Sometimes the best plan combines both: orthodontics to position teeth correctly, then bonding to fine-tune shape or build up small lateral incisors. Retainers are needed afterwards to keep gaps from reopening.

Proportions, gums and the frenum

A natural smile depends on the width-to-length ratio of each tooth and how teeth relate to each other. Your dentist considers these proportions, often using digital scans or a trial mock-up, to show how the teeth would look with the gap closed by bonding. Gum health is checked: gaps caused by gum disease will reopen unless the gums are treated, and bonding near inflamed gums does not bond well. If a thick frenum is pulling the teeth apart, a minor procedure to release it (frenectomy) may be suggested, usually with orthodontic closure. Being clear about these factors helps prevent results that look bulky or relapse.

Planning with Dr. Manhal Helfawee

At Manhal Medical Center, Office 101, SMJ1 Building, central Dubai, Dr. Manhal Helfawee, founder and medical director and consultant implantologist with more than 20 years in the UAE (DHA licence 00169366-001), plans cosmetic work including veneers, crowns and smile refinements. He measures the gaps, checks your gums, bite and tooth proportions, and explains honestly whether bonding alone will look natural, or whether orthodontic treatment — which the clinic’s orthodontic team can assess — should come first. You receive a written plan describing each step. Consultations are available in English and Arabic, daily from 11:00 to 20:00 (Saturday from 10:00).

Composite bonding shapes tooth-coloured resin directly onto the tooth to repair chips, close small gaps or even out edges. It usually needs little or no drilling and is completed in a single appointment.

Prepared by the Manhal Medical Center editorial team · Updated: 2026-10-18 · Treating specialist: Dr. Manhal Helfawee

This page is general information and does not replace a consultation. Suitability, risks and results vary between patients.