Table 1 Search strategy

PubMed

((((primary first molar ) OR (primary maxillary first molar ) OR (primary mandibular first molar))) AND (((tooth migration) OR (tooth drift)OR (mesial movement) OR (distal movement) OR (space loss) OR (arch changes)))) AND (((premature tooth loss ) OR (premature loss) OR (tooth loss) OR (tooth extraction) OR (tooth exfoliation)))

Last update posted on or before 09/15/2022

100

Web of Science

((((primary first molar ) OR (primary maxillary first molar ) OR (primary mandibular first molar))) AND (((tooth migration) OR (tooth drift)OR (mesial movement) OR (distal movement) OR (space loss) OR (arch changes)))) AND (((premature tooth loss ) OR (premature loss) OR (tooth loss) OR (tooth extraction) OR (tooth exfoliation)))

Last update posted on or before 09/15/2022

63

Cochrane Libray

((((primary first molar ) OR (primary maxillary first molar ) OR (primary mandibular first molar))) AND (((tooth migration) OR (tooth drift)OR (mesial movement) OR (distal movement) OR (space loss) OR (arch changes)))) AND (((premature tooth loss ) OR (premature loss) OR (tooth loss) OR (tooth extraction) OR (tooth exfoliation))) in Title Abstract Keywords

Last update posted on or before 09/15/2022

77

EMBASE

(‘primary first molar’ OR (primary AND first AND (‘molar’/exp OR molar)) OR ‘primary maxillary first molar’ OR (primary AND (‘maxillary’/exp OR maxillary) AND first AND (‘molar’/exp OR molar)) OR ‘primary mandibular first molar’ OR (primary AND mandibular AND first AND (‘molar’/exp OR molar))) AND (premature AND tooth AND loss OR (premature AND loss) OR (tooth AND loss) OR (tooth AND extraction) OR (tooth AND exfoliation)) AND (space AND loss OR (tooth AND migration ) OR (tooth AND drift ) OR (mesial AND movement) OR (distal AND movement) OR (arch AND changes))

Last update posted on or before 09/15/2022

87