Salivary Nickel and Chromium Levels in Orthodontic Patients with and Without Periodontitis: a Preliminary Historical Cohort Study.

Many periodontal patients may need orthodontic treatment. Alterations in oral environment particularly the reduction of pH in periodontal patients could affect metal ion release from orthodontic appliances. However, there is no study on metal ion release in periodontal patients.

Systematic review and meta-analysis of congenitally missing permanent dentition: Sex dimorphism, occurrence patterns, associated factors and biasing factors.

Purpose: We aimed to summarize/analyze, comprehensively and for the first time, the literature on the prevalence of congenitally missing teeth (CMT) in males and females and the CMT pattern, taking various associated and biasing factors into account.

Methods: A search was performed independently by two authors during September 2012 till June 2013 to find all the available literature regarding CMT-associated factors and patterns comprising sex dimorphism, arches, anterior/posterior regions, unilateral/bilateral patterns, and involved teeth. The data were statistically analyzed.

Rate of acquired immunity in dental students after hepatitis B vaccination.

Background: Triple-course vaccination against hepatitis B might sometimes fail to increase antibody titers or maintain it at sufficient levels. The aim of this study was to evaluate the rate of seroprotection in dental students after receiving recombinant hepatitis B vaccine.

Methods: Anti-HBs levels of 124 dental students who had received triple-course hepatitis B vaccines (scheduled at months 0, 1, and 6) were examined.