Tooth Gems: Read the Shade First, Then Bond the Gem

You saw the gem on somebody else’s tooth and you want one. Before anyone etches your enamel, look at the colour the stone will sit on. A gem is a fixed sparkle on a tooth whose colour is not fixed. Whiten first, then bond the gem.

One trial ran thirty-nine volunteers through three routes to the same finish, six grades of whitening. The in-office arm got there in just over three cycles. Drugstore strips took nearly thirty-two.[1] Those cycles are not the same length, so count them as appointments rather than hours.

Predictive Whitening™ is how UpWhiten whitens. NanoChroma™ reads the shade you are starting from in the chair, before any gel is opened, then reads it again at the end. You are buying a shade, not sessions.

A drugstore kit never reads the colour it is working on, so it cannot tell you when the gem should go on. You buy another box and guess again.

What a tooth gem is, and what it sits on

A tooth gem is a small crystal or metal ornament bonded to the front of a tooth with dental adhesive. It sits on the enamel. Nothing is drilled, and no hole is made.

The bond is the one orthodontics has used for decades. Somebody etches the enamel, lays down a composite pad, and sets it with a curing light.

No trial has measured that bond on a gem the way it has been measured on brackets. Researchers bonded brackets to acid-etched enamel, pulled them off, and scored the adhesive left behind on the tooth.[2]

So picture a gem as a bracket you picked yourself, in a shape you like, on one tooth. The stones and settings change how it looks, and the chemistry under it stays the same.

How a gem goes on, and how it comes off

A gem goes on in minutes and comes off in minutes, both times in a chair. The person placing it cleans and dries the tooth, etches the enamel, sets the stone and cures the pad.

Removal is the half nobody plans for. A professional lifts the stone and polishes the pad away, and the polishing is the skilled part. Do it yourself with a fingernail and you are guessing where the composite stops and your enamel starts.

A gem is not permanent. It comes off when somebody takes it off, and it can come loose on its own, usually while you are eating.

Are tooth gems bad for your teeth?

A gem is not bad for a tooth by itself. The edge where it meets enamel is the risk, because plaque collects there and a brush skates over it.

The measured version of that risk comes from brackets, which sit on teeth for a year or two. Researchers sampled the biofilm beside brackets bonded with composite resin and counted a rising number of Streptococcus mutans across seven weeks.[4]

Gum scores also got worse by six months around bonded brackets, in both arms of a randomised trial of thirty patients.[5] Bonded hardware asks more of your brushing.

Marks can outlast the hardware. A follow-up twelve years after the braces came off scanned the same front surfaces. The white areas had shrunk, and still had not returned to where they started.[3]

The aftercare is dull. Brush that edge on purpose, and have a dentist look at it at your next check-up.

Whiten first, then bond the gem

Whiten first. A gem is bonded onto the colour beneath it, and that colour is the only part of this you can still change.

A professional treatment lifts colour out of natural enamel and the dentine under it. It does nothing to a composite pad or to the stone sitting on top. Bond a gem to a yellow tooth and that patch keeps its colour for as long as the stone is there.

“My teeth are crazy yellow.” — Lorainne G.

A gem does not answer that sentence. A reading does. NanoChroma™ puts a number on the shade you have before any gel is opened, and the specialist sets your target against it.

What you buy is the Ideal Shade Package. Unlimited sessions until you reach your ideal shade or your genetic limit, at no extra cost. One number covers the lot, told to you at the free Complimentary Shade Consultation after the reading, with monthly payment plans.

Seven in ten buyers decided in the chair, on the day they saw their reading, on the studio’s own records to 12 September 2026.

Then the stone goes onto a finished shade. You can see how a session in Ottawa runs before you decide anything.

Colour still drifts afterwards. In a trial followed for four and a half years, colour rebounded by just over two shade-guide units.[8] The stone does not drift with it, so a shade is kept up, not bought once.

Who reads the colour your gem will sit on

Somebody has to read the colour under that stone, and the three routes read it three different ways. An instrument reads it, a person squints at a plastic tab, or nobody looks at all.

Across six studies in living mouths, pooled in a systematic review, instrument readings came out more accurate than the eye.[6] The NanoChroma™ scale runs thirty-eight steps, from S40, the most yellow, to S2, the whitest.

The eye also gets fooled on the day. After half an hour of dry teeth, 85% of them had moved past the point where the eye calls the colour unacceptable.[7] A day later, nearly all of them were back under that line.[7]

A dental office whitens between fillings, by eye, against a plastic tab held up to your face. The studio does nothing else, and reads the colour on an instrument. A strip habit sits at the other end: a box every few months, for years, and nobody ever reads the shade.

A dental office’s real product is the tray, not the chair visit. The chair visit is the opener, the tray of nights is the homework, and the quote arrives after a paid exam.

The table below lists three ways people arrive at a gem, and who sets and reads the colour underneath it.

An old injury that darkened a tooth from the inside is not a stain a gel can reach. A crown, a veneer or a bonded front surface holds the colour it was manufactured in. A stone placed on one of those sits on that colour for good. The reading in the chair says so before you pay for anything.

Where to compare gem styles and costs

Styles and costs sit on their own pages. Both move with the stone, the setting and the hands doing the work. What the different stones and settings cost is a different question from which one suits your tooth.

When you are choosing who places it, what to ask a provider in Ottawa sorts the shortlist for you.

Where this answer stops

This page stops at the stone and the shade under it. How a session runs and how far a shade moves are settled on how whitening itself works. What puts the yellow back sits on what stains teeth. Bring both questions to your reading.