Stitching after extraction depends upon the type of extraction. Its not compulsary that the stitching is always done. If the tooth came out without causing much damage to the soft tissues than there is no need for sutures. In your case it seems that the extraction was not that much traumatic and the healing will occur properly. You just need to take care not to spit or smoke. Do warm saline gargles 24 hours post extraction several times a day and take liquid diet for 4-5 days...for more info visit the link...http://www.identalhub.com/article_do's-and-don'ts-after-tooth-extraction-153.aspx