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Epidemiological studies have consistently shown that Sjögren's disease (SjD) increases the risk of dental caries. Despite similar evidence indicating an elevated risk of periodontitis, SjD remains a disputed risk factor for this disease. The risk of bias in observational research is a major impediment to confirming this link. Within an instrumental variable framework, genetic variants associated with a risk factor can be used to proxy its effect on an outcome while avoiding common sources of observational study bias. In this study, we leveraged an instrumental variable approach to investigate whether SjD affects the risk of caries and periodontitis. A total of 57 genetic variants strongly associated with SjD were identified from a genome-wide association study of 2,247 European descent cases and 332,115 controls. We tested for associations of these genetic instruments with caries (measured as the number of decayed, missing, and filled surfaces in 26,792 individuals) and periodontitis (17,353 clinical periodontitis cases and 28,210 European controls). Several sensitivity analyses were used to further validate the primary inverse variance weighted (IVW) estimate. IVW analysis revealed an adverse effect of SjD on caries (β = 0.039, P = 6.3e-16) and periodontitis (odds ratio = 1.033, P = 2.3e-05). Sensitivity analyses, conducted to assess the robustness to potential violations of instrumental variable assumptions, further support these findings. Our results showed that SjD has a detrimental effect on caries and also suggest that SjD promotes periodontitis. [ABSTRACT FROM AUTHOR]

Eileen Moritz,1,2,* Gabriele Jedlitschky,1,* Josefine Negnal,1 Mladen V Tzvetkov,1 Günter Daum,3,4 Marcus Dörr,2,5 Stephan B Felix,2,5 Henry Völzke,2,6 Matthias Nauck,2,7 Edzard Schwedhelm,4,8 Peter Meisel,9 Thomas Kocher,9 Bernhard H Rauch,1,2,10,* Birte Holtfreter9,* 1Institute of Pharmacology, Department of General Pharmacology, University Medicine Greifswald, Greifswald, Germany; 2German Center for Cardiovascular Research (DZHK), Partner Site Greifswald, Greifswald, Germany; 3Clinic and Polyclinic for Vascular Medicine, University Heart Center, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; 4German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Hamburg, Germany; 5Department of Internal Medicine B, University Medicine Greifswald, Greifswald, Germany; 6Institute for Community Medicine, University Medicine Greifswald, Greifswald, Germany; 7Institute of Clinical Chemistry and Laboratory Medicine, University Medicine Greifswald, Greifswald, Germany; 8Institute of Clinical Pharmacology and Toxicology, University Medical Center Hamburg-Eppendorf, Humburg, Germany; 9Dental Clinics, Department of Periodontology, University Medicine Greifswald, Greifswald, Germany; 10Carl von Ossietzky Universität Oldenburg, Department of Human Medicine, Section of Pharmacology and Toxicology, Oldenburg, Germany*These authors contributed equally to this workCorrespondence: Bernhard H RauchCarl von Ossietzky Universität Oldenburg, Department of Human Medicine, Section of Pharmacology and Toxicology, Carl-von-Ossietzky-Str. 9-11, Oldenburg, 26129, GermanyTel +49 (0) 441 798 4930Fax +49 (0) 441 798 3088Email Bernhard.Rauch@uni-oldenburg.dePurpose: Periodontitis is an inflammatory disease of the oral cavity with an alarmingly high prevalence within the adult population. The signaling lipid sphingosine-1-phosphate (S1P) plays a crucial role in inflammatory and immunomodulatory responses. In addition to cardiovascular disease, sepsis and tumor entities, S1P has been recently identified as both mediator and biomarker in osteoporosis. We hypothesized that S1P may play a role in periodontitis as an inflammation-prone bone destructive disorder. The goal of our study was to evaluate associations between periodontitis and S1P serum concentrations in the Study of Health in Pomerania (SHIP)-Trend cohort. In addition, we investigated the expression of S1P metabolizing enzymes in inflamed gingival tissue.Patients and Methods: We analyzed data from 3371 participants (51.6% women) of the SHIP-Trend cohort. Periodontal parameters and baseline characteristics were assessed. Serum S1P was measured by liquid chromatography tandem mass spectrometry. The expression of S1P metabolizing enzymes was determined by immunofluorescence staining of human gingival tissue.Results: S1P serum concentrations were significantly increased in subjects with both moderate and severe periodontitis, assessed as probing depth and clinical attachment loss. In contrast, no significant association of S1P was seen with caries variables (number and percentage of decayed or filled surfaces). S1P concentrations significantly increased with increasing high-sensitivity C-reactive protein (hs-CRP) levels. Interestingly, inflamed compared to normal human gingival tissue exhibited elevated expression levels of the S1P-generating enzyme sphingosine kinase 1 (SphK1).Conclusion: We report an intriguingly significant association of various periodontal parameters with serum levels of the inflammatory lipid mediator S1P. Our data point towards a key role of S1P during periodontitis pathology. Modulation of local S1P levels or its signaling properties may represent a potential future therapeutic strategy to prevent or to retard periodontitis progression and possibly reduce periodontitis-related tooth loss.Keywords: sphingosine-1-phosphate, lipid mediator, periodontitis, inflammation

The aim of this study was to develop and externally validate a score for use in dental settings to identify those at risk of undiagnosed nondiabetic hyperglycemia (NDH) or type 2 diabetes (T2D). The Studies of Health in Pomerania (SHIP) project comprises 2 representative population-based cohort studies conducted in northeast Germany. SHIP-TREND-0, 2008 to 2012 (the development data set) had 3,339 eligible participants, with 329 having undiagnosed NDH or T2D. Missing data were replaced using multiple imputation. Potential covariates were selected for inclusion in the model using backward elimination. Heuristic shrinkage was used to reduce overfitting, and the final model was adjusted for optimism. We report the full model and a simplified paper-based point-score system. External validation of the model and score employed an independent data set comprising 2,359 participants with 357 events. Predictive performance, discrimination, calibration, and clinical utility were assessed. The final model included age, sex, body mass index, smoking status, first-degree relative with diabetes, presence of a dental prosthesis, presence of mobile teeth, history of periodontal treatment, and probing pocket depths ≥5 mm as well as prespecified interaction terms. In SHIP-TREND-0, the model area under the curve (AUC) was 0.72 (95% confidence interval [CI] 0.69, 0.75), calibration in the large was −0.025. The point score AUC was 0.69 (95% CI 0.65, 0.72), with sensitivity of 77.0 (95% CI 76.8, 77.2), specificity of 51.5 (95% CI 51.4, 51.7), negative predictive value of 94.5 (95% CI 94.5, 94.6), and positive predictive value of 17.0 (95% CI 17.0, 17.1). External validation of the point score gave an AUC of 0.69 (95% CI 0.66, 0.71), sensitivity of 79.2 (95% CI 79.0, 79.4), specificity of 49.9 (95% CI 49.8, 50.00), negative predictive value 91.5 (95% CI 91.5, 91.6), and positive predictive value of 25.9 (95% CI 25.8, 26.0). A validated prediction model involving dental variables can identify NDH or undiagnosed T2DM. Further studies are required to validate the model for different European populations. [ABSTRACT FROM AUTHOR]

The long-term effectiveness of powered toothbrushes (PTBs) and interdental cleaning aids (IDAs) on a population level is unproven. We evaluated to what extent changes in PTB and IDA use may explain changes in periodontitis, caries, and tooth loss over the course of 17 y using data for adults (35 to 44 y) and seniors (65 to 74 y) from 3 independent cross-sectional surveys of the German Oral Health Studies (DMS). Oaxaca decomposition analyses assessed to what extent changes in mean probing depth (PD), number of caries-free surfaces, and number of teeth between 1) DMS III and DMS V and 2) DMS IV and DMS V could be explained by changes in PTB and IDA use. Between DMS III and V, PTB (adults: 33.5%; seniors: 28.5%) and IDA use (adults: 32.5%; seniors: 41.4%) increased along with an increase in mean PD, number of caries-free surfaces, and number of teeth. Among adults, IDA use contributed toward increased number of teeth between DMS III and V as well as DMS IV and V. In general, the estimates for adults were of lower magnitude. Among seniors between DMS III and V, PTB and IDA use explained a significant amount of explained change in the number of caries-free surfaces (1.72 and 5.80 out of 8.44, respectively) and the number of teeth (0.49 and 1.25 out of 2.19, respectively). Between DMS IV and V, PTB and IDA use contributed most of the explained change in caries-free surfaces (0.85 and 1.61 out of 2.72, respectively) and the number of teeth (0.25 and 0.46 out of 0.94, respectively) among seniors. In contrast to reported results from short-term clinical studies, in the long run, both PTB and IDA use contributed to increased number of caries-free healthy surfaces and teeth in both adults and seniors. [ABSTRACT FROM AUTHOR]

Current evidence indicates the effects of periodontitis on diabetes as well as mortality, for which diabetes itself represents a risk factor. However, the possible interaction of these 2 chronic conditions regarding mortality has not yet been investigated. Therefore, the purpose of this study was to evaluate whether periodontal destruction interacts with diabetes on all-cause and cardiovascular disease (CVD) mortality or if diabetes serves as a mediator in this association. The study sample comprised 3,327 participants aged 20 to 81 y from the Study of Health in Pomerania. Periodontal destruction was assessed via clinical attachment level (CAL) and the number of missing teeth. Information on mortality (date and ICD-10 code) was ascertained from death certificates. Directed acyclic graphs were used to identify potential confounders, and Cox proportional hazard models were applied. In 36,701 person-years of follow-up, 263 study participants deceased, 89 due to CVD. Fully adjusted main effect models resulted in hazard ratios of 1.01 (95% confidence interval [95% CI]: 1.002 to 1.01) for extent of CAL ≥3 mm, 1.10 (95% CI: 1.03 to 1.18) for mean CAL, and 1.03 (95% CI: 1.01 to 1.04) for the number of missing teeth regarding all-cause mortality. Analogous results were obtained for CVD mortality, with hazard ratios of 1.01 (95% CI: 0.99 to 1.02), 1.10 (95% CI: 0.98 to 1.23), and 1.02 (95% CI: 0.99 to 1.05) for extent of CAL, mean CAL, and the number of missing teeth, respectively. Findings did not indicate additive interaction of periodontal destruction and diabetes regarding all-cause and CVD mortality. Similarly, no substantial evidence was found to demonstrate the presence of multiplicative interaction or mediation. Besides adjustment for baseline covariates, time-varying covariates were also considered and led to comparable results. In summary, despite their reciprocal relationship, periodontal destruction and diabetes may be independent risk factors for all-cause and CVD mortality. [ABSTRACT FROM AUTHOR]

Periodontitis is characterized by inflammation of the gingival tissue. The main risk factors are socioeconomic factors, sex, age, smoking, and diabetes, but periodontal disease has also a genetic background. Previous genome-wide association studies failed to reveal genome-wide significant associations of single common single-nucleotide polymorphisms with chronic periodontitis. Using the Illumina ExomeChip data of 6,576 participants of the German population-based cohort studies Study of Health in Pomerania (SHIP) and SHIP-Trend, the authors performed single variant and also gene-based association studies of rare and common exonic variations on different periodontal case definitions. Although our study comprised the largest sample size to date to assess genetic predisposition for chronic periodontitis, the authors found no significant association. This study emphasizes that for chronic periodontitis, large sample sizes will be necessary to find genetic associations, even when examining rare genetic variants. [ABSTRACT FROM AUTHOR]

Objective: To explore associations between diabetes etiology (type 1 diabetes mellitus [T1DM] vs. T2DM) and glycemic control in the prediction of 5-year periodontal status change.Research Design and Methods: The Study of Health in Pomerania (SHIP) is a population-based stratified sample of German men and women. Healthy participants and those determined to have T2DM arose from the SHIP cohort, and T1DM participants were recruited from diabetes clinics in the catchment area that gave rise to SHIP. Dentate participants (n = 2,626; 53% women; 20-81 years of age) were included. Diabetes was determined via physician diagnosis and/or HbA(1c) ≥6.5% (uncontrolled diabetes >7.0%). Examiners blinded to diabetes status performed random half-mouth periodontal examinations, assessing probing depth (PD) and attachment loss (AL) (four sites/tooth) at baseline and follow-up. Participants were categorized into six groups as follows: 1) diabetes free (n = 2,280), 2) incident T2DM (n = 79), 3) controlled T2DM (n = 80), 4) uncontrolled T2DM (n = 72), 5) controlled T1DM (n = 43), and 6) uncontrolled T1DM (n = 72). In multivariable regressions, mean PD change (ΔMPD), mean AL change (ΔMAL), or incident tooth-loss values were regressed across the aforementioned diabetes categories.Results: Mean (SD) ΔMPD and ΔMAL values among all participants were -0.08 ± 0.5 mm and 0.08 ± 1.03 mm, respectively, and 34% lost one or more teeth. Relative to diabetes-free participants, those with uncontrolled T2DM experienced greater ΔMPD ± SE (P < 0.05), whereas participants with either uncontrolled T1DM or uncontrolled T2DM realized greater ΔMAL (P < 0.05). Uncontrolled T1DM and T2DM were both associated with an increased risk of future tooth loss (P < 0.05).Conclusions: Diabetes control, but not etiology, was associated with future tooth loss and accelerated AL progression. [ABSTRACT FROM AUTHOR]

Objective: Infection may be a type 2 diabetes risk factor. Periodontal disease is a chronic infection. We hypothesized that periodontal disease was related to A1C progression in diabetes-free participants.Research Design and Methods: The Study of Health in Pomerania (SHIP) is a population-based cohort in Germany including 2,973 diabetes-free participants (53% women; aged 20-81 years). Participants were categorized into four groups according to increasing baseline periodontal disease levels (percentage of sites per mouth with attachment loss >or=5 mm, determined a priori); sample sizes for each respective category were 1,122, 488, 463, and 479 (241 participants were edentulous). Mean absolute changes (year 5 minus baseline) in A1C (DeltaA1C) were regressed across periodontal categories while adjusting for confounders (e.g., age, sex, smoking, obesity, physical activity, and family history).Results: Across baseline periodontal disease categories, DeltaA1C +/- SEM values were 0.023 +/- 0.02, 0.023 +/- 0.02, 0.065 +/- 0.03, and 0.106 +/- 0.03 (P(trend) = 0.02), yielding an approximate fivefold increase in the absolute difference in DeltaA1C when dentate participants in the highest versus lowest periodontal disease category were compared; these results were markedly stronger among participants with high-sensitivity C-reactive protein >or=1.0 mg/l (P(interaction) = 0.01). When individuals who had neither baseline periodontal disease nor deterioration in periodontal status at 5 years were compared with individuals with both poor baseline periodontal health and longitudinal periodontal deterioration, mean DeltaA1C values were 0.005 vs. 0.143% (P = 0.003).Conclusions: Periodontal disease was associated with 5-year A1C progression, which was similar to that observed for a 2-SD increase in either waist-to-hip ratio or age in this population. [ABSTRACT FROM AUTHOR]

Aim: We assessed the prevalence and extent of periodontitis in Germany. Furthermore, region- and gender-specific differences in periodontal disease prevalence were evaluated. Material and Methods: The fourth German Dental Health Survey is a national cross-sectional survey conducted in 2005. Nine hundred and twenty-five adults (35-44 years) and 1040 seniors (65-74 years) were examined. The survey comprised social- and health-related interviews and dental examinations. Probing depth (PD) and clinical attachment loss (CAL) were assessed at three sites at 12 index teeth. Results: Prevalence of CAL3 mm was found in 95.0% in adults and 99.2% in seniors with 68.7% and 91.4% of teeth being affected, respectively. PD4 mm was prevalent in 76.9% and 87.7% in both age groups, respectively. According to the CDC definition considering mesiobuccal and distolingual sites, prevalence of periodontitis was 70.9% and 87.4% in both age cohorts, with one-fourth and one-half presenting severe forms, respectively. Periodontal prevalence was significantly higher in male subjects and East German subjects. Conclusions: Periodontitis was highly prevalent in German adults. To reduce periodontal burden, treatment of periodontal diseases and continuous maintenance should become an integral part in dental practice. Furthermore, health recommendations should be implemented at the community, professional, and individual level. [ABSTRACT FROM AUTHOR]

Staphylococcus aureus is one of the most common causes of hospital-acquired infections. At the same time, 25% of healthy persons are symptom-free S. aureus carriers, and they have an increased risk of developing nosocomial S. aureus septicemia. Paradoxically, their prognosis is much better than that of noncarriers. We compared the antibody profiles for carriers and noncarriers toward S. aureus superantigens. In carriers, we found high titers of neutralizing antibodies specific for those superantigens that are expressed by their colonizing strain. The results show that carriage status confers strain-specific humoral immunity, which may contribute to protection during S. aureus septicemia. Copyright © 2006 Infectious Diseases Society of America [ABSTRACT FROM AUTHOR]

OBJECTIVE: Oral leukoplakia is an oral lesion with a premalignant character. Besides smoking and alcohol, diabetes could be a risk factor. The aim is to search for such an association. RESEARCH DESIGN AND METHODS: Subjects with leukoplakia (N = 123) from the population-based Study of Health in Pomerania (SHIP) were matched 1:2 for age and sex with unaffected control subjects. Behavioral and lifestyle factors were assessed by a questionnaire. Lipoprotein concentrations, glycemia, and inflammation parameters were determined. RESULTS Subjects with oral leukoplakia showed higher levels of diabetes-related metabolites, a higher LDL/HDL cholesterol ratio (P = 0.004), and higher A1C (P = 0.002), and they were more frequently smokers (P < 0.001). Assessed by conditional logistic regression, the probability of leukoplakia increases with current smoking (odds ratio 2.20 [95% CI 1.16-4.17]) and higher levels of A1C (1.51 [95% CI 1.08-2.12]), revealing interaction between both factors (P = 0.012). CONCLUSIONS: Diabetes is associated with the risk of oral leukoplakia, which is exaggerated by smoking. The risk is positively correlated with A1C concentrations. [ABSTRACT FROM AUTHOR]

Background: We investigated the efficacy of two different cold atmospheric pressure jet plasma devices (CAP09 and CAPmed) and an air polishing device with glycine powder (AP) either applied as monotherapies or combined therapies (AP + CAP09; AP + CAPmed), in microbial biofilm removal from discs with anodised titanium surface., Methods: Discs covered with 7-day-old microbial biofilm were treated either with CAP09, CAPmed, AP, AP + CAP09 or AP + CAPmed and compared with negative and positive controls. Biofilm removal was assessed with flourescence and electron microscopy immediately after treatment and after 5 days of reincubation of the treated discs., Results: Treatment with CAP09 or CAPmed did not lead to an effective biofilm removal, whereas treatment with AP detached the complete biofilm, which however regrew to baseline magnitude after 5 days of reincubation. Both combination therapies (AP + CAP09 and AP + CAPmed) achieved a complete biofilm removal immediately after cleaning. However, biofilm regrew after 5 days on 50% of the discs treated with the combination therapy., Conclusion: AP treatment alone can remove gross biofilm immediately from anodised titanium surfaces. However, it did not impede regrowth after 5 days, because microorganisms were probably hidden in holes and troughs, from which they could regrow, and which were inaccessible to AP. The combination of AP and plasma treatment probably removed or inactivated microorganisms also from these hard to access spots. These results were independent of the choice of plasma device., (© 2024. The Author(s).)