[Investigation of dental manpower in non-public dental institutions in Liaoning province].

Purpose: To investigate the non-public oral medical institutions in Liaoning province in 2011, and to analyze the status of dental manpower in non-public dental institutions in Liaoning province.

Methods: A mass survey on dental manpower was made in non-public dental institutions in Liaoning province in 2011 by means of questionnaire investigation, which included the institution type, dental devices, and the number, structure, composition, distribution of dental manpower in non-public dental institutions in Liaoning province. Data was entered with EpiData 3.

[Investigation of the medical institutions of stomatology and dental manpower distribution in Liaoning province].

Purpose: The aim of this investigation was to determine and analyze the distribution of the medical institutions of stomatology and dental manpower in Liaoning province.

Methods: The data of institutions and manpower was collected by mass examination using tables filled by every institution and personally. Epidata 3.

Application of problem-based learning in a large class in stomatology course.

Purpose: To determine the feasibility of implementing problem-based learning (PBL) in a large class and whether previous PBL experience is necessary.

Materials And Methods: A total of 236 students from 2 large classes at China Medical University were enrolled. One class (118 students) had had a previous small-group PBL experience and another class (113 students) had not.

[Difference between dental caries and oral health behavior of family in primary dentition].

Objective: To study the dental caries status in the primary dentition of 5-year-old children and analyze the difference of oral health behavior of family between urban and rural in Liaoning province.

Methods: The representative samples were selected by multi-stage, stratified and random sampling from Liaoning province. Dental caries of 792 children at five years were recorded according to World Health Organization criteria.

[The prevalence and trends of caries in Liaoning province].

Purpose: The aim of this investigation was to analyse the dental caries prevalence, patterns and trends of all age groups in Liaoning province.

Methods: The representative samples were selected by multi-stage, stratified and random sampling, which included subjects aged 5,12,35-44 and 65-74 years. Clinical examination was based on WHO methodology(4th Ed).