Page restore is a technique used to replace corrupted pages of information in a #database with uncorrupted #data from a #backup. Page-level restore can be performed via #SSMS or T-SQL.
The intent of the restore is to fix one or more corrupted pages from the available #backups.
More Info >>
https://ibmimedia.com/blog/100/doing-page-level-restore-in-sql-server
