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Abstract

Background We conducted a study to evaluate the risk of atrial fibrillation (AF) and atrial flutter (AFL) in periodontal disease (PD) patients. Methods Cohort studies that evaluate the risk of AF or AFL in PD patients were included. The risk was expressed in the pooled odd ratio (OR) with 95% confidence interval (CI). Results A total of four cohort studies were included. We found that patients with PD have a significantly higher risk of AF/AFL compared to those without PD with the pooled OR of 1.33 (95% CI 1.29–1.38; p = 0.357, I ² = 3.0%). Conclusions PD increases the risk of AF and AFL.
Journal of Arrhythmia. 2023;00:1–5.
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1www.journalofarrhythmia.org
1 |INTRODUCTION
Periodontal disease (PD) is a chronic inflammatory disease caused
by the accumulation of dental plaque that triggers an immune re-
sponse.1 Studies have found that individuals with PD are at a higher
risk of developing cardiovascular diseases (CVD). Recent evidence
suggested the possibility of an association between PD and atrial
fibrillation (AF).2 AF and atrial flutter (AFL) have a significant impact
on morbidity and mortality and can lead to various complications
such as stroke, systemic thromboembolism, dementia, heart failure,
and myocardial infarction. These complications not only affect the
quality of life but also increase healthcare costs.3 In this systematic
review and meta- analysis, we aim to evaluate the relationship be-
tween PD and AF/AFL.
2 |METHODS
A literature search was performed in the MEDLINE, EMBASE, and
SCOPUS, using the search terms “periodontal” and “atrial fibrilla-
tion,” “periodontitis” and “atrial fibrillation,” and “periodontal” and
“atrial flut ter”. Studies were included if they were human studies,
Received: 12 June 2023 
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Revised: 4 August 2023 
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Accepted: 20 Au gust 2023
DOI: 10.1002/joa3.12921
RAPID COMMUNICATION
Periodontal disease and risk of atrial fibrillation or atrial flutter:
A systematic review and meta- analysis
Natnicha Leelaviwat MD1| Jakrin Kewcharoen MD2| Kiddee Poomprakobsri MD3|
Angkawipa Trongtorsak MD4| Gaspar Del Rio- Pertuz MD5| Mahmoud Abdelnabi MD1|
Juthipong Benjanuwattra MD1| Leenhapong Navaravong MD6,7
This is an op en access ar ticle under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in
any medium, provided t he original work is properly cited, the use is non-commercial an d no modific ations or adaptations a re made.
© 2023 The Authors. Journal of Arrhythmia published by John Wiley & Sons Austr alia, Ltd on be half of Japanese Heart R hythm Soc iety.
1Depar tment of Internal Medici ne, Texas
Tech University Health Sciences Center,
Lubbock, Texas, USA
2Division of Cardiology, Loma Linda
University Healt h, Loma Linda, California,
USA
3Advanced Education Program in Im plant
Dentis try, Loma Linda University School
of Dentis try, Loma Lin da, Califo rnia, USA
4Department of Cardiovascular Medicine,
Virginia Commonwealth University,
Richmond, Virginia, USA
5Cardiovascular Division, University of
Minnesota, Minneapolis, Minnesota, USA
6Division of Cardiovascular Medicine,
University of Utah H ealth, Salt Lake City,
Utah, USA
7Intermountain Heart Institute— Utah
Valley, Provo, Ut ah, USA
Correspondence
Leenhapong Navaravong, Intermountain
Heart InstituteUtah Valley, 395 W
Cougar B lvd, Suite 50 3 Provo, UT 846 04,
USA.
Email: leenhapong.navaravong@imail.org
Abstract
Background: We conducted a study to evaluate the risk of atrial fibrillation (AF) and
atrial flutter (AFL) in periodontal disease (PD) patients.
Methods: Cohort studies that evaluate the risk of AF or AFL in PD patients were
included. The risk was expressed in the pooled odd ratio (OR) with 95% confidence
interval (CI).
Results: A total of four cohort studies were included. We found that patients with
PD have a significantly higher risk of AF/AFL compared to those without PD with the
pooled OR of 1.33 (95% CI 1.29– 1.38; p= 0.357, I2= 3.0%).
Conclusions: PD increases the risk of AF and AFL.
KEYWORDS
atrial fibrillation, atrial flutter, cardiovascular disease, periodontal disease
2 
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    LEEL AVIWAT et al.
cohort or case– control studies, and required to report the associa-
tion between AF or AFL and PD or report the incidence of AF or
AFL comparing patients who had PD and patients who did not have
PD. AF or AFL was identified from the diagnosis codes or death
certificates using the International Classification of Diseases, Ninth
Revisions, Clinical Modification (ICD- 9- CM) codes or by a standard
12- lead ECG. PD was defined differently among the four s tudies that
were included. It was defined by ICD- 9- CM code together with re-
ceiving antibiotic therapy or periodontal treatment in one study. An-
other study defined PD by diagnosis code and subgingival curettage
treatment code. Another study defined PD if meeting the World
Health Organization Community Periodontal Index greater than or
equal to code 3 of periodontitis diagnosis. The last study defined PD
according to the Periodontal Profile Class.
The risk of AF or AFL in PD was expressed in the pooled odd
ratio (OR) with 95% confidence interval (CI). All statistical analyses
in this meta- analysis were performed using STATA 14.2 software.
3 |RESULTS
Our search strategy yielded 344 results. A total of 4 cohort stud-
ies met the inclusion criteria.2 , 4 6 However, one study6 was further
excluded because of a small sample size resulting in a larger confi-
dence interval. A final of 3 studies2,4,5 including 1 358 568 patient s
(680 549 with PD and 677 974 without PD) were included in the
study. Figure 1 outlines our search methodology and selection pro-
cess; the baseline characteristics of the included studies are summa-
rized in Table 1. We found that the patients who had PD had a 33%
increased risk of having AF or AFL compared to patients who did
not have PD (pooled OR 1.33, 95% CI 1.29– 1.38; p= .357, I2= 3.0%)
(Figure 2).
4 |DISCUSSION
To our knowledge, this is the first systematic review and meta-
analysis to assess the risk of AF and AFL associated with PD. We
found that PD is associated with an increased 1.3- fold risk of AF
and AFL.
Several mechanisms have been proposed to explain the potential
link between PD and CVD with systemic inflammation being one of
the most important.7 Multiple studies demonstrated that patients
who have higher levels of c- reactive protein (CRP) have a greater risk
of acute myocardial infarction and cardiovascular events.8 Inflam-
mation is a key pathophysiologic factor of AF. Chronic inflammation
in the atrial leads to fibrosis and dilatation, which can disrupt the
normal electrical activity of the heart and increase risk of AF. This
process is referred to as atrial remodeling.9 The high incidence of AF
in a state of the inflammator y process such as postcardiac surgery
FIGURE 1 Prisma flow diagram
demonstrates search methodology and
selection process. For more information,
visit www.prism a- state ment.org.
Records idenfied
throughMEDLINE
databasesearching
(n=66)
ScreeningIncluded Eligibility Idenficaon
Addionalrecords
idenfiedthrough EMBASE
database searching
(n=172)
Records duplicate removed
(n =192)
Records screened
(n=152) Titlesand Abstractsreviewed
excluded:
n=103
Full-text arcles assessed
foreligibility
n=49
Full-text articles were excluded due to:
Does not evaluate our topic: 15
Does not compare patients with
periodontal disease and patients without
periodontal disease: 14
Does not evaluate atrial fibrillation as an
outcome: 4
Studies included in
qualitavesynthesis
n=16
Studies included in qualitave
synthesis(meta-analysis)
(n=4)
Addionalrecords idenfied
throughSCOPUSdatabase
searching
(n=106)
Small samplesize
excluded:
n=1
Studiesfinally includedin
qualitavesynthesis
(meta-analysis)
n=3
18832148, 0, Downloaded from https://onlinelibrary.wiley.com/doi/10.1002/joa3.12921, Wiley Online Library on [16/09/2023]. See the Terms and Conditions (https://onlinelibrary.wiley.com/terms-and-conditions) on Wiley Online Library for rules of use; OA articles are governed by the applicable Creative Commons License
   
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 3
LEELAVIWAT et al.
TABLE 1 Characteristics of studies in the meta- analysis that investigate the association between periodontal disease and atrial fibrillation/atrial flut ter.
First author/
year Country Study design
Patients (n)
Study population/inclusion criteria Exclusion criteria
Periodontal disease
diagnosis
Atrial fibrillation/atrial
flutter diagnosis
Periodontal
disease
Nonperiodontal
disease
Chen/2016 Taiwan A retrospective
cohort
393 745 393 745 Participants from The Taiwanese National
Health Insurance Research Database
(NHIRD) included patients with PD and
non- PD that were individually matched
with a 1:1 ratio based on gender and
individual age
Previous diagnoses of
AF or AFL
A diagnosis code
(ICD9- CM Codes
523.3– 5)
A diagnosis code
(ICD9- CM Codes
4 2 7 . 3 1 2 )
Hsu/2022 Taiwan A retrospective
cohort
282 560 282 560 Participants from The Taiwanese National
Health Insurance Research Database
(NHIRD) included patients with
periodontitis and nonperiodontitis that
were individually matched with a 1:1 ratio
based on age, urbanization level, income,
and index day
Prior stroke A diagnosis code 523.X
with subgingival
curettage treatment
code (91006– 91 0 08)
N/A
Sen/2021 United
States
A prospective
cohort
4289 1669 Par ticipant s from the Atherosclerosis Risk in
Communities (ARIC) Study
Prior AF, participants
with medical
contraindications
to a dental exam,
those with dental
implant s only, not
African American
or white (because
of limited sample
size of other races)
The periodontal
profile class (PPC);
periodontal health
(PPC- A), mild PD
(PPC- B and C),
moderate PD (PPC- D
and E), and severe PD
(PPCF and G)
A standard 12- lead ECG,
hospitalization, and
death certificates
using ICD- 9- CM
codes 427.31 or
42 7.3 2
18832148, 0, Downloaded from https://onlinelibrary.wiley.com/doi/10.1002/joa3.12921, Wiley Online Library on [16/09/2023]. See the Terms and Conditions (https://onlinelibrary.wiley.com/terms-and-conditions) on Wiley Online Library for rules of use; OA articles are governed by the applicable Creative Commons License
4 
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    LEEL AVIWAT et al.
also suggested the link between inflammation and AF.10 Studies have
reported an association between inflammator y markers, such as CRP
and interleukin- 6 (IL- 6), and AF.9 Furthermore, Im et al. found that AF
patients with periodontitis had a higher risk of major cardiac events
compared to those without periodontitis. The study also found that
patients with periodontitis had a higher prevalence of other arrhyth-
mias, including atrial premature beat, atrial tachycardia, and ventric-
ular tachycardia.6 Not only we found an elevation of inflammator y
markers in AF, but an elevation of CRP and IL- 6 is also seen in PD
as well,2 and there is a reduction of inflammatory markers including
CRP, IL- 6, and tumor necrosis factor- alpha after dental treatment.11
This may be a reasonable presumption based on the evidence avail-
able that decreasing systemic inflammation through dental treat-
ment could potentially lower the risk of developing AF and improve
prognosis in patients who have established AF diagnosis.
Not only inflammation, but platelet and coagulation cascade ac-
tivations also play a role in the development of AF and lead to con-
sequent AF thrombotic complications.9 The study in 76 AF patients
suggests that periodontitis is not only positively correlated with LAA
fibrosis but also with the presence of atrial thrombi, further high-
lighting the potential link between poor dental health and cardio-
vascular event.12
The current 2019 AHA/ACC/HRS guideline for the management
of patients with AF emphasizes addressing the risk factors as one
of the treatment approaches for AF.13 Weight reduction resulted in
a reduction in AF burden with the explanation that obesity is as-
sociated with a systemic proinflammatory state and diastolic dys-
function.14 Thus, reducing systemic inflammatory conditions by
promoting oral hygiene care could be another easy way to reduce
the risk of developing AF.
5 |CONCLUSIONS
Our study suggested that PD is associated with an increased risk
of AF/AFL. Thus, better oral health might be an easily modifiable
risk factor to reduce the risk of developing AF/AFL. However, more
research is needed to clarify the relationship to identify the most ef-
fective strategy for preventing and managing both conditions.
CONFLICT OF INTEREST STATEMENT
All the authors declare no conflict of interest.
ETHICS APPROVAL STATEMENT, PATIENT CONSENT
STATEMENT, AND CLINICAL TRIAL REGISTR ATION
Not applicable.
ORCID
Natnicha Leelaviwat https://orcid.org/0000-0001-7994-639X
Jakrin Kewcharoen https://orcid.org/0000-0003-0959-5576
Leenhapong Navaravong https://orcid.
org/0000-0001-7087-1707
TWITTER
Natnicha Leelaviwat NLeelaviwat
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How to cite this article: Leelaviwat N, Kewcharoen J,
Poomprakobsri K, Trongtorsak A, Del Rio- Pertuz G,
Abdelnabi M, et al. Periodontal disease and risk of atrial
fibrillation or atrial flutter: A systematic review and meta-
analysis. J Arrhythmia. 2023;00:1–5. ht t p s :// d oi .
org /10.100 2/joa3.12921
18832148, 0, Downloaded from https://onlinelibrary.wiley.com/doi/10.1002/joa3.12921, Wiley Online Library on [16/09/2023]. See the Terms and Conditions (https://onlinelibrary.wiley.com/terms-and-conditions) on Wiley Online Library for rules of use; OA articles are governed by the applicable Creative Commons License
... The risk of bias assessment indicated that 21 systematic reviews (87.5%) demonstrated low bias (high quality) [8-13, 15-19, 21-27, 29-31], 2 had medium bias [14,28], and 1 exhibited high bias (low quality) [20]. Key issues identified included the formulation of explicit research questions, critical appraisal, data extraction, and publication bias ( Fig. 2 and Supplementary Material 4). ...
... Key issues identified included the formulation of explicit research questions, critical appraisal, data extraction, and publication bias ( Fig. 2 and Supplementary Material 4). Two systematic reviews with meta analysis were published in the format of rapid communication and therefore lacked some information in the methods [14,20]. However, they were kept since they analyzed the influence of periodontitis on two cardiovascular conditions that were not identified in other reviews. ...
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Objective Periodontitis and various noncommunicable diseases (NCDs) have been proposed to have a bidirectional relationship. The purpose of this umbrella review is (1) to synthesize the evidence and (2) to grade the strength and certainty of the scientific evidence regarding the bidirectional association between periodontitis and NCDs. Data sources Electronic databases were systematically searched from January 2021 and July 2024; MEDLINE (via PubMed), Embase and SciELO. Data selection and extraction Potential epidemiologic systematic reviews with meta-analysis that studied the bidirectional association between periodontitis and NCDs were identified by two independent reviewers and filtered by title and abstract according to the selection criteria. The strength and the quality and certainty of the evidence was assessed according to the Grading of Recommendations, Assessment, Development and Evaluations (GRADE) guide. 561,554 potential results were identified. After removing duplicates and excluding records deemed ineligible by automated filters, 450 results were screened by title and abstract. This process led to 41 records being appraised in full-text. Of these, 17 were further excluded leaving a total of 24 systematic reviews that met the inclusion criteria. Data synthesis 24 systematic reviews with a total of 32 NCDs were appraised and consolidated. Risk of bias assessment indicated that 21 systematic reviews (87.5%) demonstrated low bias (high quality), 2 had medium bias, and 1 exhibited high bias (low quality). Key issues identified included the formulation of explicit research questions, critical appraisal, data extraction, and publication bias. The association between periodontitis and NCDs was strong in 1 systematic review, moderate in 8, weak in 10 and absent in 7 systematic reviews. The strength of the association between NCDs and periodontitis was moderate in 6 systematic reviews and weak in 3 systematic reviews. The size of the reported effect (odds ratio/risk ratio/hazard ratio) was broader with increasing strength. Although data supports the association between periodontitis and some NCDs, and to a lesser extent between some NCDs and periodontitis, the certainty of the evidence was classified as low to very low. Conclusions There is some data that, with varying degrees of association and low to very low certainty, provide evidence that periodontitis may be a potential risk factor for some NCDs and vice versa.
... Three SR [41,42,46] included reported that there was an association between PD and tooth loss, with AF/ AFL. One SR [41] meta-analyzed its results and found that the OR was 1.33 (CI: 1.29 to 1.38). ...
... Three SR [41,42,46] included reported that there was an association between PD and tooth loss, with AF/ AFL. One SR [41] meta-analyzed its results and found that the OR was 1.33 (CI: 1.29 to 1.38). Zhang et al. [42] and Leelapatana et al. [46] reported that there is an association between AF/AFL and PD. ...
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Background Periodontal disease (PD) is an infectious and inflammatory condition that affects the tissues surrounding and supporting the teeth. It has been suggested that PD may be associated with cardiovascular disease (CVD), one of the leading causes of mortality worldwide. Our study aimed to investigate the association between PD and CVD through an umbrella review. Methods A comprehensive search was conducted until April 2024 across various electronic databases, including PubMed, Cochrane Library, Scopus, SciELO, Web of Science, Google Scholar, ProQuest Dissertations and Theses, and OpenGrey. Systematic reviews with or without meta-analysis were considered for inclusion, without any limitations on time or language, provided they examined primary studies linking PD with CVD. The AMSTAR-2 tool was employed to assess the quality and overall confidence of the included studies. Results After the initial search, a total of 516 articles were identified. Following the application of selection criteria, 41 articles remained for further consideration. All these studies indicated an association between PD and CVD, with odds ratios and risk ratios ranging from 1.22 to 4.42 and 1.14 to 2.88, respectively. Conclusions Systematic reviews with high overall confidence support the association between PD, tooth loss, and cardiovascular diseases. However, it is crucial to interpret these results with caution due to methodological limitations. The potential public health relevance justifies preventive and corrective oral health strategies. Additionally, the need for rigorous future research is highlighted to strengthen the evidence and guide effective public health strategies.
... Currently, several meta-analyses and systematic reviews have demonstrated a higher incidence of AF (Leelaviwat et al. 2023), cerebral ischemia, and stroke in subjects with periodontitis (Lafon et al. 2014;Leira et al. 2017;Sfyroeras et al. 2012;Janket et al. 2003). Indeed, periodontal pathogens are causative of oral and systemic inflammation, and periodontitis acts within the same chronic inflammatory model seen in AF and stroke (Liccardo et al. 2019). ...
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BACKGROUND Recent studies have indicated an association between periodontitis and atrial fibrillation (AF), although the underlying mechanisms remain unclear. Porphyromonas gingivalis is a causative agent of periodontal disease and is highly pathogenic. This study focused on P gingivalis and aimed to investigate the relationship among periodontitis, atrial translocation of P gingivalis , and atrial fibrosis and AF. METHODS An experiment was conducted using P gingivalis –infected C57BL/6J mice, in which P gingivalis was inoculated into the pulp of the molars. Immunohistochemistry was used to visualize the localization of P gingivalis , and loop-mediated isothermal amplification was employed to detect P gingivalis DNA in the left atrium. AF inducibility was examined by intracardiac stimulation. Moreover, left atrial appendage specimens were obtained from 68 patients with AF. A periodontal examination was conducted before the surgery, and the periodontal epithelial surface area and periodontal inflamed surface area, which are quantitative indices used to determine the clinical severity of periodontitis, were measured. The bacterial number of P gingivalis in human atrial tissue was analyzed via quantitative polymerase chain reaction. Atrial fibrosis was assessed using Azan-Mallory staining. RESULTS The translocation path of P gingivalis from the dental granuloma to the left atrium via the circulatory system was demonstrated by immunohistochemistry and loop-mediated isothermal amplification in P gingivalis –infected mice, which showed a higher degree of atrial fibrosis (21.9% versus 16.3%; P =0.0003) and a higher AF inducibility (30.0% versus 5.0%; P =0.04) than the control mice. Upregulation of GAL3 (galectin 3) and transforming growth factor-beta 1 in the left atrium was observed in P gingivalis –infected mice. Moreover, immunohistochemistry revealed that P gingivalis was also present in human atrial tissue. The number of P gingivalis in the human atrial tissue was positively correlated with periodontal epithelial surface area (ρ=0.35; P =0.004), periodontal inflamed surface area (ρ=0.52, P <0.0001), and the degree of atrial fibrosis (ρ=0.38; P =0.002). CONCLUSIONS P gingivalis translocation to the left atrium correlates with the clinical severity of periodontitis, which may exacerbate atrial fibrosis and AF. Atrial translocation of P gingivalis is a potential pathway explaining the causal relationship between periodontitis and AF.
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Intervention to the modifiable risk factors is important in the comprehensive management of atrial fibrillation(AF). Although periodontitis is highly prevalent and can be modified by dental intervention, it has not been recognized as a risk factor for AF. This study aimed to investigate the relationship between periodontitis and atrial fibrosis which is known as an AF substrate. Seventy-six patients with AF who underwent left atrial appendage(LAA)resection during surgery were included. LAA patients received a periodontal examination before the surgery in which periodontal inflamed surface area(PISA)was measured as a quantitative index of periodontitis. The degree of atrial fibrosis was histologically quantified using the LAA. We found that PISA was positively correlated with the degree of atrial fibrosis(R=0.46 ; P<0.0001). After adjusting for age, body mass index, AF duration, mitral valve regurgitation, and CHADS2(congestive heart failure, hypertension, age, diabetes, previous stroke/transient ischemic attack)score, PISA was independently associated with the degree of atrial fibrosis(β=0.016 ; P=0.0002). This study histologically revealed the association of periodontitis with atrial fibrosis in patients with AF. Periodontitis may worsen atrial fibrosis by eliciting systemic inflammation, which may be causative for AF occurrence and perpetuation. Further clinical and basic evidence will be required to confirm that periodontitis is a modifiable risk factor for AF, and the medical-dental cooperation in the comprehensive management of AF may be essential.
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Gingivitis and periodontitis are associated with a negative impact on Oral Health Related Quality of Life (OHRQoL), exerting a significant influence on aspects related to the patients' function and esthetics. Periodontitis has been associated with several systemic conditions, including adverse pregnancy outcomes, cardiovascular diseases, type 2 diabetes mellitus (DM), respiratory disorders, fatal pneumonia in hemodialysis patients, chronic renal disease and metabolic syndrome. The aim of this paper was to review the results of different periodontal treatments and their impacts on patients' OHRQoL and systemic health. Non-surgical and surgical periodontal treatments are predictable procedures in terms of controlling infection, reducing probing pocket depth and gaining clinical attachment. In addition, the treatment of periodontitis may significantly improve OHRQoL and promote a reduction in the levels of systemic markers of inflammation, including some cytokines associated with cardiovascular diseases. Studies have also suggested that periodontal treatment may improve glycemic control in patients with DM. Strategies and actions for preventing the onset and recurrence of periodontitis, and the challenges facing the field of periodontology in the XXI century are presented in this review.
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Objectives Relationship between atrial fibrillation (AF) and inflammation was shown in previous studies. However, there was limited data about the association between the periodontitis and AF in the long-term follow-up. The aim of this study was to evaluate the impact of periodontitis on long-term clinical outcomes in patients with AF. Methods The Kosin University echocardiography, ECG and periodontitis database were reviewed from 2013 to 2015 to identify patients with AF. Those patients were divided into two groups according to the presence of periodontitis and clinical events including any arrhythmic attack, thromboembolic and bleeding and death were collected during a median of 18 months. Results Among 227 patients with AF, 47 (20.7%) patients had periodontitis. Major adverse cardiac events (MACE) were significantly higher in patients with periodontitis compared with those without periodontitis (p<0.001). Arrhythmias including AF, atrial tachycardia, atrial premature beat, ventricular tachycardia and ventricular premature beat also occurred in 44 (93.6%) patients, which was higher significantly higher incidence in patients with periodontitis than in those without periodontitis (p<0.001). In univariate analysis, age, CHA2DS2-VASc, left atrial volume index (LAVi) and periodontitis were significantly associated with arrhythmic events and MACE including bleeding events, thromboembolic events, arrhythmic events and mortality. In multivariate analysis, LAVi (p=0.005) and periodontitis (p<0.001) were independent risk factors for arrhythmic events and periodontitis (p<0.001) for MACE at the long-term follow-up. Conclusions The periodontitis as representative of chronic inflammation was an independent predictor of arrhythmic events and MACE in patients with AF.
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Periodontal diseases comprise a wide range of inflammatory conditions that affect the supporting structures of the teeth (the gingiva, bone and periodontal ligament), which could lead to tooth loss and contribute to systemic inflammation. Chronic periodontitis predominantly affects adults, but aggressive periodontitis may occasionally occur in children. Periodontal disease initiation and propagation is through a dysbiosis of the commensal oral microbiota (dental plaque), which then interacts with the immune defences of the host, leading to inflammation and disease. This pathophysiological situation persists through bouts of activity and quiescence, until the affected tooth is extracted or the microbial biofilm is therapeutically removed and the inflammation subsides. The severity of the periodontal disease depends on environmental and host risk factors, both modifiable (for example, smoking) and non-modifiable (for example, genetic susceptibility). Prevention is achieved with daily self-performed oral hygiene and professional removal of the microbial biofilm on a quarterly or bi-Annual basis. New treatment modalities that are actively explored include antimicrobial therapy, host modulation therapy, laser therapy and tissue engineering for tissue repair and regeneration.
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Background: This study aimed to investigate the risk of stroke incidence in patients with periodontitis. Methods: Data on patients diagnosed with periodontitis were collected from Taiwan's National Health Insurance Research Database (NHIRD) and were matched (1:1) with patients without periodontitis between 2001 and 2010. A multivariable Cox survival model was used to predict stroke between patients with and without periodontitis, and the possibility of confounders. Hazard ratios (HRs) with 95 % confidence intervals (CIs) were used to explore the risk of stroke in the case and control groups. Diseases found during the follow-up period were analyzed to determine possible effects on the study. A total of 282,560 periodontitis and non-periodontitis patients were enrolled, with most subjects aged 40-59 years. Results: The overall cumulative incidence of stroke was 2.14 times higher in periodontitis than in non-periodontitis, and the highest HR was in the >80 years age group (HR=9.30; 95% CI, 7.06-12.26). The multivariate Cox model indicated that the adjusted HR (aHR) between the case and control was 2.03 (95% CI, 1.99-2.08), and a higher aHR was associated with hypertension. Atherosclerosis, atrial fibrillation, obesity, kidney disease, anxiety, and gout discovered during follow-up also showed a potential risk of stroke in patients with periodontitis. Conclusion: Therefore, this study suggests a high risk of stroke in patients with periodontitis.
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Background We recently described the association between periodontal disease (PD) and stroke risk. Purpose The purpose of this study was to test the association between PD, dental care utilization and incident AF, as well as AF as a mediator to PD- stroke association. Methods In dental Atherosclerosis Risk in Communities Study (ARIC), participants without prior AF underwent full-mouth periodontal measurements. PD was defined on an ordinal scale as healthy (referent), mild, moderate and severe. In ARIC main cohort, participants were classified as regular or episodic dental care users. These patients were followed for AF, over 17 years. Cox proportional hazards models adjusted for AF risk factors were used to study relationships between PD severity, dental care utilization and AF. Mediation analysis was used to test if AF mediated the PD- stroke association. Results In dental ARIC cohort, 5,958 were assessed without prior AF, 754 were found to have AF. Severe PD was associated with AF on both univariable (crude HR, 1.54; 95% CI, 1.26-1.87) and multivariable (adjusted HR, 1.31, 95% CI, 1.06-1.62) analyses. Mediation analysis suggested AF mediates the association between PD and stroke. In the main ARIC cohort, 9,666 participants without prior AF were assessed for dental care use, 1558 were found to have AF. Compared with episodic users, regular users had a lower risk for AF on univariable (crude HR, 0.82, 95% CI, 0.74–0.90) and multivariable (adjusted HR, 0.88, 95% CI, 0.78–0.99) analyses. Conclusions PD is associated with AF. The association may explain the PD-stroke risk. Regular users had a lower risk of incident AF compared with episodic users.
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Periodontal and cardiovascular disease are both major health issues. Poor oral health has long been associated with the development of systemic diseases, with the typical example being the risk of endocarditis posterior to dental procedures. Through the years, the association of periodontal disease with other non-infectious systemic diseases has been brought to attention. One of the most interesting associations is the one that exists with the development of cardiovascular disease. Many studies, including systematic reviews and meta-analyses, suggest an important association between periodontal disease and ischaemic heart disease, cerebrovascular disease, heart failure, atrial fibrillation and peripheral artery disease. Among the proposed mechanisms of this relationship, systemic inflammation appears to play a major role. Evidence suggests that periodontal inflammation triggers a systemic inflammatory state that, added to the damage mediated by antibodies that cross react between periodontal pathogens and components of the intimal wall, and the direct lesion of the intima by bacteria entering the circulation, promotes atheroma plaque development and progression. There are other studies that show a clear relationship between periodontal disease severity, elevations of inflammatory markers, and the presence of atherosclerosis. Here, we give a review of the available evidence supporting this association, and the possible mechanisms involved.
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