Introduction: Primary teeth have an important role in directing the eruption of permanent teeth. Premature loss of primary teeth can lead to unwanted tooth movement resulting in loss of space in the permanent teeth. Space maintainer (SM) is a tool-based process that plays an important role in preventive and interceptive orthodontics during the start of primary teeth or premature loss in developing teeth. Space maintainer (SM) has been used when there is premature loss of primary teeth to avoid unwanted teeth movement and loss of arch length. Objective: To explore the use of spaca maintainers in pediatric dentistry. Methods: In the systematuc riview, the article search was performed on Pubmed, Elsevier, and Google Scholar. Study published on 2013 to 2020. 60 were articles assessed, including 60 articles from the electronic databases, 0 from the manual hand search. 50 records screened, 30 records excluded, 22 full-text articles assessed for eligibility and 15 full-text articles were included. Results: There were 15 articles about the use of spaca maintainer in pediatric dentistry. Conclusion: Based on 15 articles show that space maintainers are used in pediatric dentistry to preserve the space left by primary teeth that were extracted before the date of the teeth being removed.