Tooth loss and risk of oral squamous cell carcinoma in Chinese Han population.

Objective: Association between tooth loss and oral cancer risk was investigated primary studies and meta-analyses, however, the results remain inconsistent. This study is to test the association between tooth loss and oral squamous cell carcinoma (OSCC) in Chinese Han population.

Methods: Case-control study including histologically confirmed OSCC cases and healthy controls individually matched to the cases for age, sex, and district of residence between May 1, 2010, and Match 31, 2014.

Potential implication of N-acetylcysteine detoxification on adhesive endodontics.

Methacrylate resin-based dentin adhesives and root canal sealers used for bonding of filling materials inside the root canal system are cytotoxic and result in reduction in cell proliferation to a variable extent. An in vitro study to examine the detoxifying effects of N-acetylcysteine (NAC) on four commercial adhesive systems on adhesive-induced cytotoxicity and cell survival was conducted so that the use of methacrylate resin-based materials for filling root canals could be optimized. The finding that NAC co-treatment protected the cells from adhesive-induced toxicity by increasing cellular proliferation, attenuating cell cycle arrest, and reducing cell death suggests the null hypothesis that NAC has no effect on dentin adhesive-induced cell death and cell cycle arrest should be rejected.

Synthesis and characterization of triethylene glycol dimethacrylate nanocapsules used in a self-healing bonding resin.

Objectives: To date, the production of highly durable dentine bonding is still a challenge. Self-healing bonding resins may provide a new direction for the improvement of the bonding durability. The objective of the current study was to synthesize polyurethane nanocapsules encapsulated with the core material triethylene glycol dimethacrylate (TEGDMA) for use as a major component in a self-healing bonding resin.