Dr. Zuhair NattoMOHAMMAD FAISAL HASAN HELMI2022-06-012022-06-0136322https://drepo.sdl.edu.sa/handle/20.500.14154/58238Prevalence of Periodontitis and Annual Alveolar Bone Loss in a Patient Population at Harvard School of Dental Medicine: a Longitudinal Data AnalysisThesis