(((((((((“Polymorphism, Genetic”[Mesh Terms]) OR “Polymorphism, Single Nucleotide”[Mesh Terms]) OR “Genetic Variation”[Mesh Terms]) AND “Interleukin‐23”[Mesh Terms]) AND “Interleukin‐17”[Mesh Terms]) AND “IL23R protein, human” [Supplementary Concept]) AND “Receptors, Interleukin‐17”[Mesh Terms]) AND “Periodontitis”[Mesh Terms]) OR “Chronic Periodontitis”[Mesh Terms]) AND “Peri‐Implantitis”[Mesh Terms]. Here, IL23R is linked to periodontitis.