Methods We selected three groups of 7～9 years old children:normal mixed dentition, and primary molars defect, and primary molars loss.

The effect of Fluoride varnish to guard deciduous teeth against decay.;

Change of phosphor element content in enamel of deciduous teeth following phosphate iontophoresis;

Comparison of the effect of Vitapex and iodoform-zinc oxide eugenol paste on periapical periodontitis of deciduous teeth;

Prevalence of deciduous tooth caries in 780 children aged 5 years;

Change of enamel of deciduous tooth after treated with acidulated phosphate fluoride observed by map and line analysis of electron probe microanalysiser:an in vitro study;

Clinical Studies of Calcium Hydroxide Disinfecting Infectious Root Canal of Deciduous Tooth;

Relationship between Ca,P and F concentration of plaque residues in the primary teeth and caries status,sugar exposure frequency;

In vitro measurement accuracy of an electronic apex locator in primary teeth with and without root resorption;

A clinical study of root cancal therapy to primary teeth with periapical diseases in pediatric patients with leukemia.;

Objective To investigate the primary tooth caries status of 5-year-old children in Jiangsu Province, and to provide foundamental documents and guidance for oral health care.

Objective: To evaluate the effect of overfilling with zinc oxide eugenol (ZOE) on root canal therapy (RCT) for primary tooth.

Objective: The purpose of this thesis is to study, via the statistical approaches in epidemiology, the relation between the 5-years-old children’s primary tooth caries and knowledge-behavior-attitude of their parents toward oral health.