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periodontitis

American

[per-ee-oh-don-tahy-tis] / ˌpɛr i oʊ dɒnˈtaɪ tɪs /

noun

Dentistry.

inflammation of the periodontium caused by bacteria that infect the roots of teeth and the surrounding gum crevices, producing bleeding, pus formation, and gradual loss of bone and the tissues that support the teeth.

Etymology

Origin of periodontitis

First recorded in 1870–75; periodont(ium) + -itis

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

If left untreated, this inflammation can progress into chronic periodontitis, leading to gum recession and tooth loss.

From Science Daily • Apr. 13, 2026

Older adults who met recommended lycopene intake levels had roughly one third the odds of severe periodontitis compared with those whose intake was insufficient.

From Science Daily • Feb. 10, 2026

Together, the findings of this study showcase the power of this modified animal model to study the full scope of periodontitis in greater detail, right down to the biomolecular level.

From Science Daily • May 21, 2024

To gain further insights into the role of this gene, the team induced periodontitis in genetically modified mice that lacked the Il1rl1 or Il33 genes.

From Science Daily • May 21, 2024

The infection may spread from the tooth to the alveolo-dental periosteum, and set up a periodontitis.

From Manual of Surgery Volume Second: Extremities—Head—Neck. Sixth Edition. by Miles, Alexander

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023