cementogenesis in patients with localized aggressive periodontitis

o bjectives: the aim of this study was to determine the cementum thickness in the first molars of patients with localized aggressive periodontitis (lap) compared to healthy individuals. materials and methods: this case-control study compared eight first molar teeth af-fected by lap with eight third molar teeth of healthy individuals. the teeth were dis- infected by immersion in 10% buffered formalin solution for three days and were then sectioned. external mesial root surfaces (middle one-third) were evaluated under a ste- reomicroscope by a blinded pathologist to determine the mean thickness of cementum. spss software (version 16.0) and t-test were used for statistical analysis. r esults: histological examination revealed a significant difference between the two groups in terms of the amount of cementogenesis (p<0.001) .the thickness of cemen- tum was higher in the control group (105.16±11.5 μm) than in lap patients (86.44±7.3 μm). c onclusion: this study demonstrated the presence of cementum hypoplasia in mesial root surfaces of first molars affected by lap.