The investigation of dental caries among elderly people in northeast of China / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To study the dental caries status of the 65-74 years old people in northeast of China, analyze the distribution of caries in the group of people, and provide scientific basis for establishing the oral health care policies.</p><p><b>METHODS</b>The representative samples were selected by multi-stage, stratified and random sampling from the three province of northeast of China. Dental caries of 2 364 people aged 65-74 were recorded according to WHO criteria. SPSS 12.0 software was used to analyze the data.</p><p><b>RESULTS</b>1) Among 2,364 elderly people in northeast of China, the prevalence of dental caries was 67.5% and DFT was 2.68, the composition of filling was 10.82%. 2) The prevalence of coronal caries was 66.4% and DFT was 2.55. The composition of filling was 11.37%. 3) The prevalence of root surface caries was 48.4% and DFT was 1.64. The composition of filling was only 1.8%.</p><p><b>CONCLUSION</b>The prevalence of dental caries among elderly people in northeast of China is still very high, and the filling rate is low. The community based oral health promotion should be strengthened and preventive-oriented oral health care systems are needed in northeast of China.</p>

Difference between dental caries and oral health behavior of family in primary dentition / 华西口腔医学杂志

<p><b>OBJECTIVE</b>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.</p><p><b>METHODS</b>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 questionnaries were finished by 396 parents of the children and analyzed the oral health behavior of family in urban and rural by chi-squre test.</p><p><b>RESULTS</b>The prevalence and dmft of dental caries of 5-year-old children in Liaoning province was 73.86% and 4.38, respectively. The prevalence of dental caries in 5-year-old children was 64.14% in urban and 83.59% in rural. There was significant difference on the consumption of sweets, chocolate, water with sugar and beverage between the children in urban and rural. More urban children had good toothbrushing behavior such as the time of beginning brush tooth, the frequency of brushing and daily use of fluoridated toothpaste compared with the rural children. The parents in urban had high level of education and incomes and there were more children in urban have regular dental visit pattern than in rural.</p><p><b>CONCLUSION</b>This study has shown that there is an urgent need for the implementation of a systematic education on oral health behavior of family on rural children in Liaoning province.</p>

Analysis of the first permanent molar caries epidemiological investigation in area of northeast China / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To survey the tooth decay of the first molars among the people in area of northeast China in order to provide the foundation for prevention and treatment strategies of caries.</p><p><b>METHODS</b>According to the third national oral health investigation of epidemiology, the dental caries of first permanent molars were examined among 9394 people aged 5, 12, 35-44 and 65-74 in northeast China. The data were analyzed by SPSS 13.0 statistical software. Dental caries prevalence rate and DMFT (dmft) of first permanent molar were calculated.</p><p><b>RESULTS</b>The prevalence of crown and root dental caries in northeast China were 26.86% and 3.81% respectively, mean DMFT (dmft) of crown and root dental caries were 0.41 and 0.04 respectively. There were significant differences of dental caries among provinces in northeast China. Mandibular first molar suffered from dental caries easily. The prevalence of caries of female was higher than that of male (P<0.01), but there was not significant difference of prevalence of root caries between two sexes (P>0.05). Except Jilin province, there were significant differences of prevalence of crown caries between city and rural area in Liaoning and Heilongjiang provinces (P<0.01). It was no significant difference of prevalence and mean DMFT (dmft) of root caries between city and rural area in each province (P>0.05).</p><p><b>CONCLUSION</b>The prevalence of dental caries of the first molar among the people in northeast China is high. The dental caries prevention and cure of first permanent molar should be emphasized in oral health field.</p>

Study on tooth loss and prosthetic condition of middle-aged and elders in Liaoning province / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To study the status of teeth loss and their restorations of the middle-aged and elders in Liaoning province.</p><p><b>METHODS</b>Investigated the tooth losing and their restoration of middle-aged (35-44 years old) and elders (65-74 years old) according the method of the third national epidemiological investigation of oral health. The data was statistically analyzed by SPSS 11.0 software.</p><p><b>RESULTS</b>Of all 1,584 the subjects, the sum of tooth loss were 6,776, mean tooth loss were 4.28. The rate of completion of dentition was 37.44%. There were 104 middle-aged and elders who happened deletion of dentition. There were 887 middle-aged and elders who happened defection of dentition. The tooth loss of maxillary and mandible was 3,550 and 3,226 respectively. The rate of prosthetic restoration was 52.77%.</p><p><b>CONCLUSION</b>The oral health status of middle-aged and elders should be taken vey importance, especially those who lived in rural area. Dental caries and periodontal disease should be prevented so that to promote the status of middle-aged and elders oral health and to improve the quality of life.</p>

Study of caries polarization in 2-5 year-old children of Shenyang, China / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To investigate dental caries polarization in 2-5 year-old children.</p><p><b>METHODS</b>3 799 random samples of 2-5 year-old children from attending kindergarten in Shenyang were selected. Means of dmft index and SiC index for each age group were calculated by WHO Collaborating Center. The subjects of each age group were further divided into subgroups of different level of dmft: the dmft of subgroup I was 0, the dmft of subgroup II was 1, the dmft of subgroup III was 2, the dmft of sub-group IV was equal to or more than 3. The obtained data were analyzed statistically with SPSS 10.0.</p><p><b>RESULTS</b>4.5% of 2-year-old children were carriers of 60.0% of the total dmft in that age group, 13.2% of 3-year-old children were carriers of 69.4% of the total dmft in that age group, 34.4% of 4-year-old children were carriers of 86.6% of the total dmft in that age group, and 47.8% of 5-year-old children were carriers of 89.8% of the total dmft of that age group.</p><p><b>CONCLUSION</b>This study supports the assertion that a small percentage of persons with high dental caries rate and a large percentage of caries-free persons of early childhood caries.</p>