牙周基础治疗对Ⅱ型糖尿病伴慢性牙周炎患者血糖水平的影响

目的:观察牙周基础治疗对Ⅱ型糖尿病伴慢性牙周炎患者牙周炎症的控制和糖化血红蛋白的影响。方法:选取62例患者分为牙周治疗组(31例)和非牙周治疗组(31例),牙周治疗组给予牙周基础治疗和药物治疗,记录术前和术后8周龈沟出血指数(SBI)、牙周探诊深度(PD)、附着水平丧失(AL)、糖化血红蛋白(HbAIc)。非牙周治疗组仅给予药物治疗并记录治疗前及治疗后8周的PD、AL、HbAIc。结果:牙周治疗组PD、AL、HbAIc均有明显下降(P<0.01)。非牙周治疗组无显著性差异。结论:牙周基础治疗对Ⅱ型糖尿病伴慢性牙周炎患者具有良好的治疗反应。     

牙周非手术治疗对2型糖尿病伴慢性牙周炎患者牙周炎症控制及血清C反应蛋白水平影响的研究

目的探讨牙周非手术治疗对中国广州地区汉族人群2型糖尿病伴慢性牙周炎患者牙周状况及血清C反应蛋白（C-reactive protein,CRP）的影响。方法筛选135例2型糖尿病伴慢性牙周炎患者,以2∶1的比例随机分为治疗组和对照组。治疗组90例接受牙周非手术治疗,对照组45例暂不进行牙周治疗,仅行与治疗组相同的口腔卫生宣教。观察2组患者基线及干预后6个月的牙周探诊深度（probing depth,PD）、附着丧失（attachmentloss,AL）及血清CRP水平的变化情况。结果基线时Logistic回归分析显示平均PD是预测高水平CRP的危险因素（P〈0.05）。相关性分析显示CRP与平均PD相关（r=0.230,P=0.009）,与平均AL不相关（P〉0.05）。治疗后,治疗组PD减少（0.48±0.45）mm,AL减少（0.32±0.51）mm,CRP下降（1.56±5.03）mg/L。治疗前后,治疗组PD（t=10.014,P=0.000）、AL（t=5.888,P=0.000）及血清CRP水平（t=3.157,P=0.000）的差异均有统计学意义;干预前后对照组各项指标变化的差异均无统计学意义（P〉0.05）。两组平均PD（t=-3.318,P=0.001）的差异有统计学意义,而两组间平均AL和血清CRP水平的差异无统计学意义（P〉0.05）。结论牙周非手术治疗可有效改善2型糖尿病伴慢性牙周炎患者的牙周状况,尚不能确认牙周非手术治疗可显著改善2型糖尿病伴慢性牙周炎患者的血清CRP水平。     

牙周基础治疗对2型糖尿病患者血清瘦素含量影响研究

目的:观察牙周基础治疗对2型糖尿病伴牙周炎(DMCP)患者血清中瘦素(leptin)的浓度、临床牙周状态、血糖控制的影响。方法:选取DMCP患者和不伴有全身系统性疾病的慢性牙周炎(CP)患者各30例进行牙周基础治疗。分别在治疗前、治疗后1个月和3个月记录所有患者牙周临床指数:探诊深度(PD),附着丧失(AL)及菌斑指数(PLI),并检测血清中糖化血红蛋白(HbA1c)及leptin的含量。结果:DMCP组中PD、PLI和血清leptin含量在治疗后1个月和3个月时均显著降低(P<0.05),AL和血清HbAlc含量仅在治疗后3个月显著降低(P<0.05)。CP组中PD和PLI在治疗后1个月和3个月时均显著降低(P<0.05),AL和血清leptin含量仅在治疗后3个月显著降低(P<0.05)。2组治疗前血清leptin含量与牙周临床指数呈正相关。结论:牙周基础治疗有助于DMCP患者的血糖控制、牙周状态改善和血清中leptin含量下降。     

慢性牙周炎伴2型糖尿病患者牙周基础治疗前后牙周状况及血清C反应蛋白水平分析

目的探讨牙周基础治疗对慢性牙周炎伴2型糖尿病患者牙周状况及血清C反应蛋白（C-reactive pro-tein,CRP）水平的影响。方法慢性牙周炎和慢性牙周炎伴2型糖尿病患者各15例,行牙周基础治疗,观察2组治疗前、后探诊出血（bleeding on probing,BOP）、牙周探诊深度（probing depth,PD）、附着丧失（attachment loss,AL）以及血清CRP水平的变化情况。结果慢性牙周炎组治疗后PD减小（1.18±0.52）mm,BOP阳性率减少（29.0±5.0）%,CRP值减小（6.67±4.22）mg/mL,治疗前、后差异均有统计学意义（F=12.03、F=3.41、F=17.38,P〈0.05）。慢性牙周炎伴2型糖尿病组治疗后PD减小（0.57±0.26）mm,BOP阳性率降低（19.0±3.0）%,CRP值减小（3.19±2.33）mg/mL,治疗前、后差异均有统计学意义（F=1.58、F=3.41、F=20.38,P〈0.05）。结论牙周基础治疗可在一定程度上改善慢性牙周炎伴2型糖尿病患者的牙周状况,降低患者血清CRP水平。     

牙周基础治疗对2型糖尿病伴慢性牙周炎患者龈沟液丝氨酸蛋白酶抑制剂和肿瘤坏死因子-α水平的影响

目的 观察牙周基础治疗对2型糖尿病伴发或不伴发慢性牙周炎患者龈沟液(gingival crevicular flu-id,GCF)丝氨酸蛋白酶抑制剂(vaspin)和肿瘤坏死因子-α(TNF-α)水平的影响.方法 本研究包含60个研究对象,分为4组:15例2型糖尿病伴发慢性牙周炎患者为DM-CP组;15例慢性牙周炎不伴发2型糖尿病患者为CP组;15例牙周健康的2型糖尿病患者为DM组;15例牙周及全身系统均健康的个体为CTRL组.治疗前与牙周基础治疗8周后取样GCF并检测牙周临床指标.通过ELISA法检测GCF样本中vaspin和TNF-α的水平.结果 治疗前慢性牙周炎组GCF中vaspin和TNF-α水平显著高于牙周健康组(P<0.05),治疗后慢性牙周炎组GCF中vaspin和TNF-α水平显著降低(P<0.05).各组vaspin总量与TNF-α总量、糖化血红蛋白水平、牙龈指数以及探诊深度在统计学上存在正相关关系(P<0.05).结论 牙周基础治疗能明显降低慢性牙周炎患者GCF中vaspin和TNF-α的水平.提示GCF中vaspin和TNF-α可作为糖尿病、牙周炎诊断及其预后的炎性标志物.     

糖尿病与牙周炎治疗效果的相互影响

目的:探讨2型糖尿病与牙周炎治疗的相互影响。方法:随机选择患2型糖尿病伴中、重度慢性牙周炎的患者66名,其中联合治疗组(n=34)进行降糖和牙周基础治疗;糖尿病治疗组(n=32)进行单纯降糖治疗。观察比较两组治疗8周后牙周炎及糖尿病各相关指标。结果:治疗8周后,联合治疗组牙周炎症状明显改善,白细胞介素-1β降低,糖尿病症状也有明显改善,较治疗前相比均有显著性差异(P<0.05);糖尿病治疗组糖尿病与牙周炎症状均明显改善(P<0.05);联合治疗组牙周指标的改善明显优于糖尿病治疗组(P<0.05),但两组糖尿病指标的改善无显著差异(P>0.05)。结论:对于糖尿病伴慢性牙周炎的患者,糖尿病的有效控制有利于牙周炎症状的改善,糖尿病牙周联合治疗更有利于患者牙周炎症状的改善。     

牙周治疗对2型糖尿病患者血清白细胞介素6及糖化白蛋白的影响

目的 探讨牙周非手术治疗对伴牙周炎2型糖尿病患者血清白细胞介素-6及糖化白蛋白的影响.方法 选择2型糖尿病伴重度慢性牙周炎患者32例,于牙周治疗前、后一个月分别检测血清白细胞介素-6(IL-6)和糖化白蛋白(FA)、甘油三酯(TG)水平、牙周指数.结果 经牙周治疗后,伴重度牙周炎的2型糖尿病患者除TG水平外,血清IL-6阳性百分率(P＜0.05)、FA水平(P＜0.001)有明显下降;探诊深度(PD)、附着丧失(AL)治疗后均较基线明显下降(P＜0.001).结论 非手术牙周治疗可能降低糖尿病牙周炎患者外周血循环IL-6水平,糖化白蛋白水平、牙周状况也有明显改善.     

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目的研究牙周基础治疗对血清超敏C反应蛋白(Hs-CRP)的影响。方法选择2007年9月至2008年9月中日友好医院口腔科收治的未经过牙周治疗的40岁以上的中、重度慢性牙周炎患者35例,分为以下3组:单纯慢性牙周炎组(即牙周炎组,6例)、慢性牙周炎伴冠心病危险因素组(即高血压/高血脂组,22例)及慢性牙周炎伴冠心病组(即冠心病组,7例)。所有患者均进行牙周基础和维护治疗。治疗前、治疗后3个月均进行牙周检查[菌斑指数(PLI)、出血指数(BI)、探诊深度(PD)、附着丧失(AL)]和静脉血Hs-CRP检测。结果与治疗前比较,牙周基础治疗后3个月各组患者牙周指标均明显改善,PD、PLI、BI、AL均显著减小(P<0.05),但各组间各牙周指标差异无统计学意义(P>0.05);高血压/高血脂组Hs-CRP明显降低(P<0.05);冠心病组和牙周炎组Hs-CRP均略有下降(P>0.05)。Hs-CRP的变化与治疗前Hs-CRP显著相关,相关系数为0.811(P<0.05)。结论对于有冠心病危险因素或冠心病的牙周炎患者,牙周治疗可降低其血清Hs-CRP,提示牙周治疗可降低冠心病发病或再发的风险。     

2型糖尿病伴牙周炎患者牙周炎症程度与血糖水平分析

目的:分析2型糖尿病伴牙周炎患者牙周炎症程度对血糖水平的影响。方法:将213例2型糖尿病伴慢性牙周炎患者,根据根据牙周探诊深度(Probing depth,PD)和牙周附着丧失(Attach ment Loss,AL)的程度分为2组:2型糖尿病伴轻度慢性牙周炎组、2型糖尿病伴中重度慢性牙周炎组,分别测定血清h s-CRP、FPG水平并比较。结果:2型糖尿病伴中重度慢性牙周炎组较2型糖尿病伴轻度慢性牙周炎组血清FPG、hs-CRP水平升高,两组间FPG(t=7.144,P0.001)、h s-CRP(t=13.493,P0.001)差异具有统计学意义,而两组间年龄(t=-0.369,P=0.712)、性别(P=0.819)、饮酒(P=0.697)、吸烟(P=0.223)差异无统计学意义,偏相关分析发现PD与FPG(P0.001)、h s-CRP(P0.001)呈正相关。结论:牙周炎症可能会使2型糖尿病患者FPG、h s-CRP水平升高。     

伴2型糖尿病慢性牙周炎患者TNF-α基因携带频率的研究

目的:通过对伴2型糖尿病慢性牙周炎患者、不伴全身系统性疾病的慢性牙周炎患者以及健康对照组中TNF-α基因携带频率的分析,探讨病例组和对照组在该基因携带频率上的差异,并比较各组牙周临床指标和易感等位基因的关系。方法:采用牙周探针,对112例伴2型糖尿病慢性牙周炎患者(DM组)、99例单纯慢性牙周炎患者(CP组)以及健康对照组进行牙周临床指标检查和TNF-α-308基因型(TNF1/2)检测。采用SPSS13.0软件包对数据进行χ2检验和方差分析。结果:在DM组和轻中度CP组之间,轻中度DM组和重度CP组之间,重度DM组和轻中度CP组之间,重度DM组和重度CP组之间,TNF2的阳性基因型分布均有统计学差异(P<0.05)。携带等位基因TNF2的DM组和CP组的牙周探诊深度、临床附着丧失均分别显著高于只携带等位基因TNF1的DM组和CP组患者(P<0.05)。结论:携带TNF-α-308等位基因TNF2可能会增加人群牙周炎的易感性,并且在2型糖尿病和牙周炎协同作用过程中具有重要作用。     

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目的探讨牙周基础治疗对2型糖尿病（T2DM）伴慢性牙周炎患者血清炎性细胞因子及糖化血红蛋白（HbAlc）含量的影响。方法选择2012年3月至2013年9月就诊于沈阳市口腔医院牙周科患者135例,其中T2DM伴慢性牙周炎患者63例（T2DM组）,单纯慢性牙周炎患者72例（CP组）;另从沈阳市口腔医院体检中心选择牙周健康正常人50名,作为正常对照组。于牙周基础治疗前及治疗后3个月,检查各组的牙周状况以及检测血清炎性细胞因子和HbAlc含量,并对检测结果进行比较分析。结果牙周基础治疗能改善慢性牙周炎患者的牙周健康状况,降低炎性细胞因子水平。牙周基础治疗前T2DM组和CP组的C反应蛋白（CRP）、肿瘤坏死因子-α（TNF-α）及白细胞介素-6（IL-6）含量均高于正常对照组,差异有统计学意义（均P〈0.05）。与牙周基础治疗前比较,T2DM组和CP组的CRP、TNF-α及IL-6含量在牙周基础治疗后3个月均明显下降,差异有统计学意义（均P〈0.05）。牙周基础治疗前,T2DM组的HbAlc含量明显高于CP组和正常对照组;牙周基础治疗后3个月,T2DM组的HbAlc含量显著下降,且其治疗前后差异有统计学意义（P〈0.05）。结论 T2DM伴慢性牙周炎患者进行牙周基础治疗,可改善患者的牙周状况和全身健康状况,从而减少糖尿病及其并发症的发生和发展。     

伴糖尿病的慢性牙周炎患者牙周基础治疗效果研究

目的研究牙周基础治疗对伴有糖尿病的慢性牙周炎患者的治疗效果。方法选择伴Ⅱ型糖尿病的老年慢性牙周炎患者(糖尿病组)与不伴糖尿病的老年慢性牙周炎患者(非糖尿病组)各20例行牙周基础治疗,记录并比较两组患者在基线和术后3、6、12个月的菌斑指数、牙龈指数、探诊出血、探诊深度、附着丧失等指标。结果牙周基础治疗对两组患者均有较好的治疗效果,各项指标均明显改善,与基线水平比较差异有统计学意义(P<0.01),而两组间各项牙周指数的改善在术后3、6、12个月差异均无统计学意义(P>0.05)。结论牙周基础治疗对伴有糖尿病的老年慢性牙周炎患者在短期内(12个月)有良好的治疗效果。     

Chemerin as a Novel Crevicular Fluid Marker of Patients With Periodontitis and Type 2 Diabetes Mellitus

Background: The objectives of the present study are to: 1) determine whether gingival crevicular fluid (GCF) chemerin is a novel predictive marker for patients with chronic periodontitis (CP) with and without type 2 diabetes mellitus (t2DM); 2) analyze the relationship between chemerin and interleukin (IL)‐6 in periodontally healthy individuals and in patients with CP and with and without t2DM; and 3) evaluate the effect of non‐surgical periodontal therapy on GCF chemerin levels. Methods: Eighty individuals were split into four groups: 20 who were systemically and periodontally healthy (CTRL), 20 with t2DM and periodontally healthy (DM‐CTRL), 20 systemically healthy with CP (CP), and 20 with CP and t2DM (DM‐CP). Individuals with periodontitis were treated with non‐surgical periodontal therapy. GCF sampling procedures and clinical periodontal measures were performed before and 6 weeks after treatment. Enzyme‐linked immunosorbent assay was used to measure chemerin and IL‐6 levels. Results: Greater values for GCF chemerin and IL‐6 levels were found in CP groups than in periodontally healthy groups, in DM‐CP than in CP, and in DM‐CTRL than in CTRL (P <0.008). GCF chemerin and IL‐6 levels decreased following therapy in CP groups (P <0.02). A comprehensive overview of all groups showed a statistically significant positive correlation of chemerin with IL‐6, glycated hemoglobin, sampled‐site clinical attachment level, and gingival index (P <0.05). Conclusions: In this study, periodontitis and t2DM induced aberrant secretion of chemerin, and non‐surgical periodontal therapy influenced the decrease of GCF chemerin levels in patients with CP with and without t2DM. Furthermore, it suggests GCF chemerin levels may be considered a potential proinflammatory marker for diabetes, periodontal disease, and treatment outcomes.     

Periodontal status and cytoplasmic enzyme activities in gingival crevicular fluid of type 2 diabetic and/or obese patients with chronic periodontitis

Type 2 diabetes mellitus and obesity are the most common nutritional disorders in developed and developing countries. Increased prevalence of periodontal disease is a well-known complication of type 2 diabetes mellitus (DM). As obesity is generally the first step toward type 2 diabetes mellitus, it is possible to find exacerbated periodontal disease in obese patients, also. The purpose of this cross-sectional study was to investigate the periodontal status and aspartate aminotransferase and lactate dehydrogenase enzyme activities in gingival crevicular fluid (GCF) of type 2 diabetic and/or obese chronic periodontitis patients. A total of 39 chronic periodontitis patients participated in the study. The study population was divided into four groups according to body mass index and type 2 DM status: 1) type 2 DM obese patients, n = 8; 2) type 2 DM patients, n = 12; 3) obese patients, n = 8; 4) systemically healthy control group, n = 11. Enzyme activities in gingival crevicular fluid and periodontal status were evaluated. No significant differences in age, gingival index, plaque index, aspartate aminotransferase and lactate dehydrogenase enzyme activities were observed, but probing depths were significantly higher in the DM groups than in the control group. Obesity did not seem to be a significant factor in any parameters evaluated. The present study showed increased probing depth values for the diabetic groups but failed to show any significant relation between obesity and enzyme activity or periodontal status. However, the slightly increased probing depth values in the obese groups might be a clue to an impaired immune response and predisposition to periodontitis in that patient group.     

The effect of periodontal treatment on glycemic control in patients with type 2 diabetes mellitus

BACKGROUND, AIMS: This study was designed to explore the effect of periodontal therapy on glycemic control in persons with type 2 diabetes mellitus (DM). METHODS: 36 patients with type 2 DM (treatment group) received therapy for adult periodontitis during an 18-month period. A 36-person control group was randomly selected from the same population of persons with type 2 DM who did not receive periodontal treatment. RESULTS: These groups were well matched for most of the parameters investigated. During the nine-month observation period, there was a 6.7% improvement in glycemic control in the control group when compared to a 17.1% improvement in the treatment group, a statistically significant difference. Several parameters that could confound or moderate this glycemic control were explored. These included the treatment of non-dental infections, weight and medication changes. No moderating effect was associated with any of these variables. However, there were too few subjects in the study to have the statistical power necessary to assess these possible moderators of glycemic control. CONCLUSIONS: We interpret the data in the study to suggest that periodontal therapy was associated with improved glycemic control in persons with type 2 DM.     

糖尿病患者牙周炎治疗后血清肿瘤坏死因子α和糖化血红蛋白的变化

目的　探讨牙周基础治疗对Ⅱ型糖尿病伴牙周炎患者的影响及其影响机制。方法选择 15例Ⅱ型糖尿病伴牙周炎患者 ,于牙周基础治疗前、后的 4～ 6周分别检测其体重指数、牙龈出血指数、探诊深度、糖化血红蛋白、总胆固醇、甘油三酯和血清肿瘤坏死因子α(tumornecrosisfactor alpha ,TNF α)的水平。 结果　除体重指数和总胆固醇无显著变化外 (P >0 0 5 ) ,其余各项临床及血清学指标均显著降低 ,治疗后与治疗前相比差异有显著性 (P <0 0 5 )。其中 ,龈沟出血指数由(3 6 0± 0 5 1)降至 (1 6 7± 0 6 2 ) ,探诊深度由 (5 73± 1 16 )降至 (2 6 0± 0 83)。糖化血红蛋白由(9 78± 1 4 9) %降至 (8 4 1± 0 82 ) % ,甘油三酯由 (1 78± 0 5 2 )mmol/L降至 (1 38± 0 31)mmol/L ,TNF α由 (12 74± 3 95 )ng/L降至 (9 6 8± 2 5 2 )ng/L。 结论　对于Ⅱ型糖尿病伴牙周炎患者 ,牙周基础治疗可能通过降低患者血清TNF α的含量 ,降低其糖化血红蛋白的水平     

Distribution of genotypes of Porphyromonas gingivalis in type 2 diabetic patients with periodontitis in Mexico

OBJECTIVE: To determine and compare the distribution of Porphyromonas gingivalis fimA genotypes in type 2 diabetes mellitus (T2DM) patients affected by periodontitis, using non-diabetic subjects with and without periodontitis as control groups. MATERIAL AND METHODS: This study involved 75 subjects divided into three groups of 25 subjects each: Group 1 (non-T2DM without periodontitis), Group 2 (non-T2DM with periodontitis) and Group 3 (T2DM with periodontitis). The outcome variable was periodontitis, and explanatory variables were age, sex, T2DM and specific P. gingivalis fimA genotypes. RESULTS: In non-T2DM subjects with healthy periodontal tissues, type I fimA was the most frequently detected individually (40%) or in combinations (40%). In non-T2DM subjects with periodontitis, the most frequently detected type was Ib individually (20%) or in combinations (36%). In T2DM patients with periodontitis, the most frequently detected types were types I (20%) and III (20%), but there was no statistical difference (p>0.05) with non-T2DM periodontitis subjects. CONCLUSIONS: Type I genotype was more frequently detected in periodontally healthy sites from non-T2DM subjects than in periodontitis sites from either subjects with or without T2DM. However, in sites affected by periodontitis from T2DM subjects the predominating types were I and III, which are less virulent strains of P. gingivalis.     

伴2型糖尿病的慢性牙周炎牙周可疑致病菌的检测

目的 检测伴2型糖尿病(diabetes mellitus,DM)的慢性牙周炎(chronic periodontitis,CP)患者龈下菌斑中牙周可疑致病菌的种类和构成,从微生物学角度探讨牙周炎与DM的相互作用机制.方法 采集伴2型DM的CP患者154例(DM组)、不伴DM的单纯CP患者120例(CP组)及40名全身及牙周健康者(N组)的龈下集合菌斑,传统酚-氯仿法提取菌斑DNA,以牙龈卟啉单胞菌(Porphyromonas gingivalis,Pg),伴放线放线杆菌(Actinobacillus actinomycetemcomitans,Aa),具核梭杆菌(Fusobacterium nucleatum,Fn),中间普氏菌(Prevotella intermedia,Pi),福塞坦氏菌(Tannerella forsythia,Tf),齿垢密螺旋体(Treponema denticola,Td)为目标菌,应用以16SrRNA为基础的聚合酶链反应(PCR)技术对龈下菌群进行检测.结果 Pg、Aa、Fn、Pi、Tf、Td在DM组中均可检出;与CP组相比,在性别、年龄、牙周状况基本一致的情况下,轻度牙周炎者DM组Pi的检出率为35%(8/23),CP组为65%(13/20),两组间差异有统计学意义(P<0.05);重度牙周炎者DM组Pg、Aa、Tf的检出率分别为78%(72/92)、27%(25/92)、67%(62/92),CP组分别为58%(35/60)、17%(10/60)、43%(26/60),DM组均显著高于CP组,差异有统计学意义(P<0.05).同时,DM组Aa、Tf PCR产物的平均灰度值(average gradation,AVG)比值显著高于CP组,Pi的AVG比值明显低于CP组,P<0.05.结论 与单纯CP相比,伴2型DM的牙周炎患者龈下菌斑中Pg、Aa、Tf的数量增多,Pi的数量减少.     

伴2型糖尿病的慢性牙周炎牙周可疑致病菌的检测

目的 检测伴2型糖尿病(diabetes mellitus,DM)的慢性牙周炎(chronic periodontitis,CP)患者龈下菌斑中牙周可疑致病菌的种类和构成,从微生物学角度探讨牙周炎与DM的相互作用机制.方法 采集伴2型DM的CP患者154例(DM组)、不伴DM的单纯CP患者120例(CP组)及40名全身及牙周健康者(N组)的龈下集合菌斑,传统酚-氯仿法提取菌斑DNA,以牙龈卟啉单胞菌(Porphyromonas gingivalis,Pg),伴放线放线杆菌(Actinobacillus actinomycetemcomitans,Aa),具核梭杆菌(Fusobacterium nucleatum,Fn),中间普氏菌(Prevotella intermedia,Pi),福塞坦氏菌(Tannerella forsythia,Tf),齿垢密螺旋体(Treponema denticola,Td)为目标菌,应用以16SrRNA为基础的聚合酶链反应(PCR)技术对龈下菌群进行检测.结果 Pg、Aa、Fn、Pi、Tf、Td在DM组中均可检出;与CP组相比,在性别、年龄、牙周状况基本一致的情况下,轻度牙周炎者DM组Pi的检出率为35%(8/23),CP组为65%(13/20),两组间差异有统计学意义(P<0.05);重度牙周炎者DM组Pg、Aa、Tf的检出率分别为78%(72/92)、27%(25/92)、67%(62/92),CP组分别为58%(35/60)、17%(10/60)、43%(26/60),DM组均显著高于CP组,差异有统计学意义(P<0.05).同时,DM组Aa、Tf PCR产物的平均灰度值(average gradation,AVG)比值显著高于CP组,Pi的AVG比值明显低于CP组,P<0.05.结论 与单纯CP相比,伴2型DM的牙周炎患者龈下菌斑中Pg、Aa、Tf的数量增多,Pi的数量减少.