"They are a form of orthodontic treatment in which the braces are hidden from view or made less visible. They come in the form of lingual orthodontics, or ceramic tooth coloured braces," said Shetty.
The alternative is expensive - generally costing about Rs.1.5 lakh.
Customised lingual braces are costlier and the "only hitch is that people find it difficult to talk because the tip of the tongue touches the back of the teeth," Chadha added.
This trend is seeing an upsurge not just in the metros but even in tier-II and tier-III cities.