Mastic gum for oral health: what dentists and studies say

Oral health is one of the oldest documented applications of mastic gum. Long before modern toothpaste existed, inhabitants of Chios were using mastic resin to clean their teeth and freshen their breath. Modern research has investigated whether this traditional use holds up — here is what the evidence shows.

The antibacterial mechanism

The oral health benefits of mastic gum stem primarily from its antibacterial properties. Mastic resin contains several bioactive compounds — including triterpenoids such as oleanolic acid, and various terpenes — that have demonstrated antibacterial activity in laboratory studies against organisms relevant to oral health. Key bacteria implicated in dental disease include Streptococcus mutans (primary driver of tooth decay), Porphyromonas gingivalis (major cause of periodontal disease), and Aggregatibacter actinomycetemcomitans. Research has found inhibitory activity against several of these species in mastic resin extracts.

What studies have found

A study published in the Journal of Oral Science investigated the antibacterial activity of Chios mastic gum against oral pathogens and found significant inhibitory activity against S. mutans and other oral bacteria. Another study examining mastic gum chewing and its effects on plaque and gingival health found that regular mastic gum chewers showed improved gingival indices compared to controls.

Saliva stimulation

Chewing any gum stimulates saliva production. Saliva neutralizes acids in the mouth after eating, remineralizes tooth enamel, washes away food debris, and inhibits bacterial growth. Mastic gum provides this benefit while also delivering antibacterial compounds — a combination not available in conventional gum. The firmer texture of mastic gum also extends the chewing session, potentially increasing total saliva output.

Mastic gum + nano hydroxyapatite: the complete oral health combination

For the most comprehensive oral health approach, YALA's Peppermint Nano Hydroxyapatite Gum combines the antibacterial mastic base with nano hydroxyapatite — a mineral that actively remineralizes enamel during the chewing session. One chew addresses both bacterial threats and enamel repair simultaneously. This is a capability no other product on the market provides.

Read more: Nano hydroxyapatite gum — the complete guide · What is remineralizing gum? · Mastic gum and nano hydroxyapatite: the oral health power combination

Bad breath

Bad breath is primarily caused by volatile sulfur compounds produced by bacteria. The antibacterial action of mastic gum, combined with its natural pine-herbal flavor, makes it effective at the source rather than just masking odor. YALA's Cool Mint variety adds natural mint flavoring to the mastic resin — particularly effective for breath freshening with the added benefit of the underlying antibacterial activity.

Zero sugar: important for dental health

Sugar-containing gum actively harms oral health by feeding the bacteria that cause tooth decay. All YALA mastic gum varieties are completely sugar-free — the Natural variety has no sweetener at all, and the flavored varieties use only stevia, which does not feed oral bacteria.