Table 1.

Six steps of the Arksey and O’Malley scoping review process

Arksey and O’Malley framework	Steps undertaken in this scoping review
Step 1: Identify the research question	From the previous literature, what is known about the relationship between Alzheimer’s disease and periodontitis?
Step 2: Identify relevant studies	Described in the methods section. A reiterative systemic search of PubMed and Scopus was performed.
Step 3: Study selection	Described in the methods section.
Step 4: Chart the data	Described in the methods section. The same author from step 3 charted the data based on the research question and the inclusion and exclusion criteria.
Step 5: Collect, summarize, and report the results	Described in the discussion section.
Step 6: Consultation (optional)	Omitted.