The best mastic gum (2026): a tested & honest buyer's guide
Most mastic gum is the same Chios resin at different stages of refinement. I tested the category, from raw tears to premium tins, and ranked what's worth buying.
Oral health, from the microbiome up
The mouth is the front door to the rest of the body. Our oral-health guides cover mastic gum, the oral microbiome, gums, breath, and jaw health. Grounded in evidence, and honest about what we don't yet know.
Oral health is about far more than a bright smile. The mouth hosts one of the body’s densest microbial communities, and what happens there shapes the rest of you: the balance of that microbiome, the health of your gums, even how your jaw works.
A few threads run through these guides.
- Mastic gum. A traditional Mediterranean resin that’s had a modern resurgence. Start with what mastic gum actually is, learn how to chew it, see what the evidence does and doesn’t show, and understand how it differs from ordinary gum. When you’re ready to buy, our best mastic gum guide explains what separates good from mediocre.
- The oral microbiome. The community of bacteria behind breath, cavities, and gum health. Our oral microbiome primer explains why “kill all the bacteria” is the wrong goal.
- Teeth and gums. What hydroxyapatite toothpaste and xylitol gum actually do, and what to do about receding gums.
- Jaw and breath. TMJ exercises, the masseter, bad breath and white tongue: practical, evidence-aware takes on the questions people actually search for.
Everything here follows the same rules: real citations, honest uncertainty, and a clear line between what’s established and what’s still preliminary. Where the science is thin, we say so.
Our picks & buying guides
Guides & explainers
Bad breath causes: where it comes from and what actually fixes it
The main bad breath causes, ranked by how often they turn up: tongue coating and gum disease first, then tonsils, reflux and H. pylori, plus fixes with evidence.
Hydroxyapatite toothpaste: does it work as well as fluoride?
Hydroxyapatite toothpaste matched fluoride in three trials of one company's formula. What the evidence shows, whether nano is safe, and who it makes most sense for.
Receding gums treatment: what stops it, and what rebuilds it
Receding gums treatment, plainly: lost gum doesn't grow back on its own, but recession can be stopped and surgery can rebuild it. Causes, options, home remedies.
TMJ exercises: the jaw exercises with evidence, and how to do them
TMJ exercises with real evidence behind them: how to do each jaw exercise step by step, a simple routine, what to avoid in a flare, and when to stop.
White tongue: what causes it and when to get it checked
A white tongue is usually a harmless coating that brushes off. What causes it, the wipe test that separates it from thrush and leukoplakia, and when to see someone.
Xylitol gum: does it help your teeth, and is it safe?
Xylitol gum has real but modest evidence against cavities, at doses most labels won't reach. What the trials show, which gums contain it, and the safety questions.
How to chew mastic gum: a beginner's guide
Mastic gum starts hard and crumbly, which trips up almost everyone new to it. How to soften it, how much to use, how long to chew, and the beginner mistakes to skip.
Masseter Botox: what the evidence shows, and what goes wrong
What masseter Botox does, how long it lasts, and the complications clinic pages leave out — including the one that accounts for 88% of reported adverse events.
Mastic gum benefits: what the evidence shows
What mastic gum does for oral health, jaw training, and digestion: what the human trials actually found, and where tradition still runs ahead of the evidence.
What is mastic gum? A plain-English guide to mastiha
Mastic gum is the natural resin of a Mediterranean tree, chewed for thousands of years. What it is, where it comes from, and why it's everywhere again.
The masseter muscle: what it does and what changes its size
Half the internet wants a bigger masseter and half is paying to shrink one. What the muscle does, why it gets tight, and what the trials say actually changes it.
Mastic gum vs regular gum: how they actually differ
Mastic gum and regular chewing gum look alike but share almost nothing. A clear side-by-side on ingredients, the chew, jaw workout, sugar, and cost.
Underbrush vs Greco Gum: an honest comparison (2026)
Underbrush and Greco Gum barely compete: one's a hydroxyapatite oral-care gum, the other a pure mastic chew. Here's which job each does, and which you want.
Underbrush gum review: is it legit? (I chewed it for a month)
I bought Underbrush and chewed it for a month, most days, to test the claims. My honest verdict on the viral remineralizing gum and whether it does what it says.
Frequently asked questions
Is mastic gum the same as regular chewing gum?
No. Mastic gum is the natural resin of the Mediterranean mastic tree (Pistacia lentiscus), chewed on its own, while most chewing gum is a synthetic gum base with sweeteners and flavors. See our side-by-side comparison.
Where do I start if I'm new to mastic gum?
Begin with what mastic gum is, then how to chew it. If you're shopping, our buying guide covers what to look for.
Does Evexia give dental advice?
Our content is general information, not a substitute for your dentist.