A study of 202 periodontitis subjects in Chengdu / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To study the severity of periodontitis and risk factors in Chengdu.</p><p><b>METHODS</b>202 periodontitis patients (65 male, 137 female), aged from 25 to 60, were requested to fill a questionnaire. Probing depth (PD), clinical attachment level (CAL), gingival recession and bleeding on probing (BOP) on 6 sites of each tooth were measured and recorded.</p><p><b>RESULTS</b>The mean PD, AL, gingival recession and BOP% of 202 subjects was (3.2 +/- 0.31) mm, (3.5 +/- 0.37) mm, (0.3 +/- 0.02) mm and 21.16%. 59% of subjects missed at least one tooth. 129 subjects suffered with initial to moderate periodontitis. 73 subject suffered with advanced periodontitis. 40, 86, 55 and 21 subjects had received college education, high school education, middle school education and primary school education. 18% of subjects had smoking history, 67% subjects had tea/coffee history, 66% of subjects had psychosocial problem, and only 8% of subjects had received regular periodontal treatment. There is no relationship between the severity of periodontitis and education.</p><p><b>CONCLUSION</b>It is very important to develop an education program on oral healthy for people in Chengdu.</p>

The association between Fc gamma receptor IIA gene polymorphism and susceptibility to chronic periodontitis in Chinese Han nationality / 华西口腔医学杂志

<p><b>OBJECTIVE</b>To investigate the association between Fc gamma receptor IIA gene polymorphism and susceptibility to chronic periodontitis in Chinese Han nationality.</p><p><b>METHODS</b>DNA samples were collected with buccal swabs from 63 patients with severe chronic periodontitis(CP), 103 patients with mild to moderate CP and 80 healthy individuals as control. Polymorphism in Fc gamma receptor IIA gene cluster was analyzed with PCR-SSP. The genotype distribution and allele frequency among different groups were compared.</p><p><b>RESULTS</b>It was found that the frequency of Fc gamma RIIA-R/R131 genotype was significantly higher in patients with severe CP (19.05%) compared to that of the healthy controls (P < 0.0125).</p><p><b>CONCLUSION</b>The Fc gamma RIIA-R/R131 genotype may be one of the contributors for the increased susceptibility to severe CP in Chinese Han nationality.</p>