Abstract
Objective: It is well established that adverse childhood experiences (ACEs) negatively affect health and are associated with health-risk behaviors. This study aimed to provide a systematic review of the studies that examine the relationship between ACE exposure and oral health among adults aged 18 years and older.Methods: The following electronic databases were searched in January 2022: MEDLINE, Cochrane, Web of Science, CINAHL via EBSCOhost, ProQuest, ScienceDirect, and Google Scholar. Data were extracted independently by two reviewers. The quality of the studies was assessed using the Newcastle-Ottawa Scale.Results: Among the 292 articles identified, four met the eligibility criteria. All included studies were cross-sectional and of satisfactory quality. The dental out-comes included: last dental visit, last dental cleaning, number of filled teeth, number of extracted teeth, and number of remaining teeth. The studies showed that exposure to ACE was negatively associated with oral health. The relationship between ACE score and oral health outcome measures was found to be directly proportional.Conclusion: There is an association between ACE and poor oral health. More-over, the association was proven to have a dose-response relationship. Given that the studies in the literature were cross-sectional, causality cannot be determined with certainty, therefore interpretation of the results should be cautious. Longitudinal follow-up studies are needed to understand how ACEs contribute to oral diseases later in life.