Best dentist near me Can teeth gaps be closed without braces? A dentist applies a tooth coloured resin to your teeth and shaped to match their natural look. Then, it is hardened with a UV light, which “bonds” it and closes the gap. Bonding usually only takes one office visit and there is no need to remove any natural enamel, which means that the process can be reversed if required. However, it also means that teeth bonding for gaps is not a permanent solution and requires maintenance, as it will wear off over time due to impacts from eating and brushing.