Location of mental foramen based on soft- and hard-tissue landmarks in a chinese population.

The purpose of the present study was to determine the location of the mental foramen (MF) based on soft- and hard-tissue landmarks, to facilitate prediction of the location of this structure during facial and dental surgery. Forty-two hemispheres of 21 adult cadavers (16 men and 5 women; aged 30-75 years) were dissected to expose the MF. The locations of the MFs were evaluated with direct and photographic measurements.

[2000 Chinese total diet study--the dietary lead and cadmium intakes].

Objective: In order to assess the safety of dietary lead (P) and cadmium (Cd) intakes in different areas in China, we carried out Chinese total diet study (TDS) in 2000 and obtained total lead and cadmium contents and intakes data and assessed the safety of lead and cadmium in Chinese dietary.

Methods: Using the Chinese total dietary study method, the analytical samples were obtained in different areas by food consumption survey, food aggregation, food sampling and preparation. The levels of dietary lead and cadmium were determined by the graphite furnace atomic absorption spectrometry.

[Study on the baseline contents and reference maximum limit standard of heavy metals and harmful element of 23 Chinese herbs in Northern China].

Objective: This study was carried out to obtain the baseline contents and establish the reference maximum limits of heavy metals and harmful element in China.

Methods: According as Chinese standard methods of heavy metals and harmful element, 254 Chinese herbs were determined.

Results: The contents of lead, cadmium, mercury and arsenic in different Chinese herbs were (1.