Is the other content intact except the pages?
If the content is missing too this might be the other project. Open the SitefintyWebApp solution for your site and right click on the SitefintyWebApp project and choose view in browser to check if this is the right project. If you still miss the pages can you check the database for your project( you can find the database name in App_Data/Sitefinity/Configuraion/DataConfig.config) and in table sf_page_data there is a column html_title_ look there for the names of your pages( there is different content there like $Resources... ignore that and look for the page titles you have entered). If the names are missing somehow the pages have been deleted which is probably not the case. IF the names are there there should be some blocker. It will require to review the project at my end so open a support ticket and send me the backup of your database and the project files. If they are too big to attach to the ticket please upload them to and FTP server and provide me with the credentials.
All the best,
the Telerik team
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