Dentition status among an ethnically diverse older urban Malaysian population.

Background: Poor oral health affects not only dietary choices but overall well-being. This study explores the influence of lifestyle, socio-demographics and utilization of dental services on the dentition status of an older urban Malaysian population.

Methods: A total of 1210 participants 60 years and above, representing the three main ethnic groups were recruited from a larger cohort study.

Claudin expression and tight junction protein localization in the lining epithelium of the keratocystic odontogenic tumors, dentigerous cysts, and radicular cysts.

Objective: The aim of this study was to evaluate the expression and localization of tight junction proteins (TJPs) or claudins in the keratocystic odontogenic tumor (KCOT) and to correlate with its biological behavior.

Study Design: Five claudins (-1, -3, -4, -5, and 7) were examined immunohistochemically in 25 KCOTs and compared with 10 dentigerous cysts (DCs) and 10 radicular cysts (RCs).

Results: Marked claudin-3 loss of expression in KCOT basal layer (n=24/25; 96%) compared with DCs (n=1/10; 10%) and RCs (n=5/10; 50%) (P<.