What can i do if my husband found a loose tooth 9 weeks after periodontal surgery..?

See periodontist: Can't tell over the internet which tooth, how bad the bone is, prognosis of his treatment, of any of the other several factors that could cause the tooth to be loose.

Mobility is expected: Mobility of tooth in the area of surgery is expected following dental surgery. It should be stabilized and relieved though by the dentist/surgeon. Postop should be given for these patient by now (usually 1 week, 2 weeks, and 4 weeks postop). These mobility should increase up to four weeks, then started to subside and/or controlled with occlusal adjustment. See your dentist/surgeon.