Effect of voxel size on detection of fenestration, dehiscence and furcation defects using cone-beam computed tomography.

Objectives: This study aimed to assess the effect of voxel size on detection of fenestration, dehiscence, and furcation defects using cone-beam computed tomography (CBCT).

Materials And Methods: This in vitro, experimental study evaluated 4 sheep skulls with both the maxilla and mandible accompanied by the surrounding soft tissue. Fenestration (n = 30), dehiscence (n = 65), and furcation defects (n = 46; 18 grade I, 25 grade II, and 3 grade III) were randomly created by round and needle burs in both jaws, and 40 areas served as control sites.

A comparative study of histological grade and expression of Ki67 protein in oral squamous cell carcinoma in young and old patients.

Background: Oral squamous cell carcinoma (SCC) is the most common cancer of oral region. The characteristic feature of SCC is invasion of dysplastic epithelium into the connective tissue. Oral SCC is more common in old patients.