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Alsharari T, Felemban MF, Khattak O, Algahtani FS, Alzahrani A. Periodontal Disease in Saudi Arabia: A Systematic Review of Prevalence and Associated Risk Factors. Diagnostics (Basel) 2025; 15:812. [PMID: 40218162 PMCID: PMC11988613 DOI: 10.3390/diagnostics15070812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2025] [Revised: 03/15/2025] [Accepted: 03/18/2025] [Indexed: 04/14/2025] Open
Abstract
Background/Objectives: The oral health disorder periodontal disease is widespread around the world and has a public health dimension. This study aimed to perform a systematic review and an appraised analysis that looks at both the prevalence and diversity of risk factors associated with periodontal disease in Saudi Arabia. It places a particular focus on subgroup analyses and pooled prevalence estimates to identify certain populations that could be described as high risk. Methods: Several databases, including PubMed, Scopus, and Google Scholar, were used to conduct the present systematic review. The search was designed to identify relevant studies published from 1980 to 2023. Both quantitative and qualitative studies were included. Subgroup analyses and meta-analyses were performed using a random-effects model to calculate pooled prevalence rates. The studies were evaluated using three criteria that focused on bias. Finally, the authors created a narrative synthesis of the review findings for ease of understanding. Results: The pooled overall prevalence of periodontal disease was 46.2% (95% CI: 40.5-51.8), with high heterogeneity (I2 = 85%). Subgroup analyses identified obese adults as having the highest prevalence of this condition (71.3%), and individuals diagnosed with diabetes also displayed a significantly high prevalence (52.1%). Adolescents aged 15-19 years had an age-specific prevalence of 8.6%, which was significantly lower than that of the other age groups analyzed. Poor oral hygiene, tobacco use, diabetes, and obesity have been recognized as risk factors for periodontal disease. Conclusions: The substantial burden of periodontal disease in Saudi Arabia, especially among high-risk groups, such as obese and diabetic adults, cannot be overstated. Our public health initiatives need to focus on these high-risk individuals, who are likely to be both periodontally and systemically compromised, to provide lifestyle modification counseling and oral hygiene education for them, as well as to routinize their dental care in a way that minimizes the chances of becoming periodontally compromised.
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Affiliation(s)
- Thani Alsharari
- Department of Restorative Dental Science, Faculty of Dentistry, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Mohammed Fareed Felemban
- Department of Oral and Maxillofacial Surgery and Dagnostic Sciences, Faculty of Dentistry, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Osama Khattak
- Department of Restorative Dentistry, College of Dentistry, Jouf University, Sakaka 72311, Saudi Arabia
| | - Fahad Saeed Algahtani
- Department of Restorative Dental Science, Faculty of Dentistry, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
| | - Abdulrahman Alzahrani
- Department of Prosthodontics, Faculty of Dentistry, Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia;
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Alzahrani AAH. Periodontal Health among Individuals with Intellectual Disabilities Living in a Saudi Institutional Rehabilitation Centre. Healthcare (Basel) 2024; 12:891. [PMID: 38727448 PMCID: PMC11083931 DOI: 10.3390/healthcare12090891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2024] [Revised: 04/23/2024] [Accepted: 04/24/2024] [Indexed: 05/13/2024] Open
Abstract
The aim of this study was to explore periodontal health among intellectually disabled individuals living in an institutional rehabilitation centre in the Al-Baha Region of Saudi Arabia. A cross-sectional study was conducted from November 2023 to January 2024. Clinical oral examinations were carried out using the World Health Organization criteria for bleeding sites and the presence of periodontal pockets. Simplified oral hygiene and community periodontal indices were employed to evaluate participants' oral health. A total of 89 participants, comprising both males and females with intellectual disabilities, were included in this study. Gender, severity of intellectual disability, type of additional physical disability, tooth brushing habits and oral hygiene status were significantly associated with the presence of periodontal disease. Additionally, poor oral hygiene, not brushing teeth and periodontal pockets of 4-5 mm and 6 mm or more were significantly more prevalent among individuals with severe and moderate intellectual disabilities (p = 0.001, p = 0.001, p = 0.001 and p = 0.001, respectively). The prevalence of periodontal disease among the studied population was 54%. The odds of having periodontal disease were significantly higher in the severe intellectual disability group compared to the mild intellectual disability group (OR = 2.328, 95% CI = 1.430-3.631, p = 0.03). It was also found that intellectually disabled participants with additional physical disabilities suffered more from periodontal disease than those without additional physical disabilities (OR = 0.971, 95% CI = 0.235-4.023, p = 0.025). Overall, individuals with intellectual disabilities had a significant demand for periodontal care. This study highlighted the need for more organised preventive programmes for individuals with intellectual disabilities. Dentists should be vigilant about improving periodontal health, focus on preventive programmes and provide comprehensive dental care with an emphasis on periodic recall and monitoring.
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Affiliation(s)
- Abdullah Ali H Alzahrani
- Dental Health Department, Faculty of Applied Medical Sciences, Al-Baha University, Al-Baha 65731, Saudi Arabia
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Parveen S, Qahtani ASA, Halboub E, Hazzazi RAA, Madkhali IAH, Mughals AIH, Baeshen SAA, Moaidi AM, Al-Ak'hali MS. Periodontal-Systemic Disease: A Study on Medical Practitioners' Knowledge and Practice. Int Dent J 2023; 73:854-861. [PMID: 37330312 PMCID: PMC10658429 DOI: 10.1016/j.identj.2023.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Revised: 05/14/2023] [Accepted: 05/19/2023] [Indexed: 06/19/2023] Open
Abstract
OBJECTIVE Oral health is intricately linked with systemic health. However, the knowledge and practice levels of medical practitioners (MPs) about this concern are extremely variable. The current study, therefore, sought to assess the status of knowledge and practice of MPs concerning the link between periodontal disease and different systemic conditions as well as the efficacy of a webinar as an interventional tool in enhancing knowledge of MPs of Jazan Province of Saudi Arabia. METHODS This prospective interventional study involved 201 MPs. A 20-item questionnaire on evidence-based periodontal/systemic health associations was used. The participants answered the questionnaire before and 1 month after a webinar training that explained the mechanistic interrelation of periodontal and systemic health. McNemar test was performed for statistical analysis. RESULTS Out of the 201 MPs who responded to the pre-webinar survey, 176 attended the webinar and hence were included in the final analyses. Sixty-eight (38.64%) were female, and 104 (58.09%) were older than 35 years. About 90% of MPs reported not being trained on oral health. Pre-webinar, 96 (54.55%), 63 (35.80%), and 17 (9.66%) MPs rated their knowledge about the association of periodontal disease with systemic diseases as limited, moderate, and good, respectively. Post-webinar, these figures improved remarkably: 36 (20.45%), 88 (50.00%), and 52 (29.55%) MPs rated their knowledge as limited, moderate, and good, respectively. Around 64% of MPs had relatively good levels of knowledge about the positive influence of periodontal disease treatment on diabetic patients' blood glucose levels. CONCLUSIONS MPs revealed low levels of knowledge on the oral and systemic disease interrelationship. Conducting webinars on the oral-systemic health interrelationship seems to improve the overall knowledge and understanding of MPs.
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Affiliation(s)
- Sameena Parveen
- Department of Maxillofacial Surgery and Diagnostic Sciences, College of Dentistry, Jazan University, Jazan, Kingdom of Saudi Arabia.
| | - Ahmed Shaher Al Qahtani
- Department of Maxillofacial Surgery and Diagnostic Sciences, College of Dentistry, Jazan University, Jazan, Kingdom of Saudi Arabia
| | - Esam Halboub
- Department of Maxillofacial Surgery and Diagnostic Sciences, College of Dentistry, Jazan University, Jazan, Kingdom of Saudi Arabia
| | | | | | | | | | | | - Mohammed Sultan Al-Ak'hali
- Department of Preventive Dentistry Division Periodontics, College of Dentistry, Jazan University, Jazan, Kingdom of Saudi Arabia
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Arslan ZB. Evaluation of the Relationship Between Oral Health and Body Mass Index. Eurasian J Med 2023; 55:259-262. [PMID: 37909201 PMCID: PMC10724796 DOI: 10.5152/eurasianjmed.2023.23272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 09/30/2023] [Indexed: 11/02/2023] Open
Abstract
OBJECTIVE The objectives of this study is to evaluate oral health comparatively in four different groups separated according to body mass index (BMI). MATERIALS AND METHODS A total of 352 patients who applied for different dental reasons were divided into groups according to BMI and examined radiologically. The incidence of oral health parameters (dental caries, alveolar bone loss, tooth loss, and periapical lesion) was evaluated. RESULTS While there was a significant difference between the groups in terms of caries, alveolar bone loss, and tooth loss (P < .05), there was no difference in the incidence of periapical lesions (P > .05). CONCLUSION Obese individuals have a higher prevalence of alveolar bone loss, caries, and tooth loss. These results show that an above-normal BMI is an important factor that can negatively affect oral health.
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Affiliation(s)
- Zeynep Betül Arslan
- Department of Dentomaxillofacial Radiology, Ankara Yıldırım Beyazıt University Faculty of Dentistry, Ankara, Türkiye
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Abbas Y, Elsaadany B, Ghallab N. Prevalence of different stages of periodontal diseases among a sample of young adult obese Egyptian patients: a hospital based Cross-sectional study over 1 year. BMC Oral Health 2023; 23:573. [PMID: 37582775 PMCID: PMC10428640 DOI: 10.1186/s12903-023-03278-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 08/02/2023] [Indexed: 08/17/2023] Open
Abstract
BACKGROUND This cross-sectional study aimed to determine the prevalence of different stages of periodontal diseases based on the recent classification in a sample of young adult obese Egyptian dental outpatients. METHODS This study included 314 patients seeking dental treatment at the Diagnostic Center of the Dental hospital, Faculty of Dentistry, Cairo University. Validated oral health questionnaire for adults regarding their age, gender, level of education and oral health routines as well as oral health impact profile questionnaire for chronic periodontitis (OHIP-CP) were filled by all patients. Obesity parameters were also assessed through person's weight in kilograms, height in centimeters and waist circumference to determine the obesity stage. Diagnosis was made based on measurements of clinical periodontal parameters including a full mouth plaque index (PI), bleeding on probing (BoP), pocket depth (PD), clinical attachment level (CAL) and gingival recession depth (RD). Radiographic examination was performed using periapical radiographs. Ordinal logistic regression analysis was used to determine significant predictors of periodontal diseases and discriminant analysis was performed to predict periodontal disease classification. RESULTS: The age range in the study sample was 19-39 years old. The prevalence of different stages of periodontal diseases was 100%. Gingivitis was the most prevalent periodontal disease (63.7%) followed by Periodontitis Stage III (22.6%) then Stage II (11.1%). Stage I showed the least prevalence (2.5%). An increase in BMI was statistically associated with an increase in PD, CAL, RD, PI and vice versa (P-value < 0.05). The total OHIP-CP was 15.99 ± 3.06 for all participants. CONCLUSIONS There was a statistically significant association between periodontal diseases and obesity in young adults, as well as a statistically significant direct correlation between BMI and periodontal parameters. Self-assessment of oral health and obesity were significant predictors of periodontal disease. CLINICAL TRIAL REGISTRATION ID NCT04618068.
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Affiliation(s)
- Yasmine Abbas
- Periodontology Department, Faculty of Dentistry, Egyptian Russian University, Badr City, Egypt
| | - Basma Elsaadany
- Oral Medicine & Periodontology, Faculty of Dentistry, Cairo University, Cairo, Egypt.
| | - Noha Ghallab
- Oral Medicine & Periodontology, Faculty of Dentistry, Cairo University, Cairo, Egypt
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Abu-Shawish G, Betsy J, Anil S. Is Obesity a Risk Factor for Periodontal Disease in Adults? A Systematic Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:12684. [PMID: 36231983 PMCID: PMC9566678 DOI: 10.3390/ijerph191912684] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 09/13/2022] [Accepted: 09/13/2022] [Indexed: 05/14/2023]
Abstract
There is inconclusive evidence about the link between the severity and prevalence of periodontitis in obese adults. Therefore, this systematic review aims to explore the possibility of significant evidence on the association between obesity and periodontitis and to determine the necessity to consider obesity as a risk factor for periodontitis. We followed the PRISMA protocol, and studies that met the eligibility criteria were included in this review. The risk of bias in individual studies was also evaluated. This review included 15 observational studies (9 cross-sectional studies, 2 case-control, and 4 cohort studies). The total study subjects from these studies were 6603 (males = 3432; females = 3171). Most studies showed a significant association between obesity and periodontitis. Among these studies, a few showed obese females to be at a higher risk, and one study found no association between obesity and periodontal disease at all. Based on the evidence obtained from this review, the body mass index (BMI) should be routinely assessed in patients to assess the risk for periodontal disease and to offer personalized management of periodontitis. Based on the findings of this review, we recommend the need to initiate awareness among clinicians and implement dental hygiene care prevention measures for obese patients.
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Affiliation(s)
- Ghadah Abu-Shawish
- Department of Dentistry, Oral Health Institute, Hamad Medical Corporation, Qatar University, Doha 3050, Qatar
| | - Joseph Betsy
- Department of Periodontics, Saveetha Dental College and Hospital, Saveetha Institute of Medical and Technical Sciences, Chennai 600077, India
| | - Sukumaran Anil
- Department of Dentistry, Oral Health Institute, Hamad Medical Corporation, Qatar University, Doha 3050, Qatar
- Pushpagiri Research Centre, Pushpagiri Institute of Medical Sciences and Research Centre Thiruvalla, Pathanamthitta 689101, India
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Alghamdi SA, Aljohar A, Almulhim B, Alassaf A, Bhardwaj SS, Thomas JT, Almalki A, Aljuaid AO, Mallineni SK. Correlation between BMI and Oral Health Status (DMFT, PI, mSBI, and Salivary 1,5-AG) among the Pediatric Population in Saudi Arabia: A Clinico-Biochemical Study. CHILDREN (BASEL, SWITZERLAND) 2022; 9:1017. [PMID: 35884001 PMCID: PMC9316969 DOI: 10.3390/children9071017] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 07/01/2022] [Accepted: 07/05/2022] [Indexed: 11/16/2022]
Abstract
The study aimed to investigate the association of varying body mass index (BMI) with oral health status among children aged 5−14 years and correlate the concentration of salivary levels of 1,5-AG with varying BMI, dental caries, and periodontal disease. This cross-sectional study was conducted on subjects aged 5 to 14 years. The children were recruited from the Pediatric Dental Clinic, College of Dentistry, Majmaah University, by convenient sampling method. Sociodemographic details and clinical parameters, including body mass index (BMI), DMFT/def (deciduous decayed tooth (d), deciduous extracted tooth (e), deciduous filled tooth (f), permanent tooth decayed (D), permanent missing tooth (M), and permanent filled tooth (F)), plaque index (PI), and modified sulcular bleeding index (mSBI), were evaluated. Salivary 1,5-anhydroglucitol (1,5-AG) was analyzed using an enzyme-linked immunosorbent assay (ELISA) for all the subjects. Statistical analyses performed using SPSS v. 27 (IBM Statistics, Chicago, IL, USA) and the Kruskal−Wallis and chi-square tests were used for comparisons. The Spearman rank correlation coefficient was used to examine the association between the study subjects’ independent variables, BMI, and caries activity. The mean def score, PI, and mSBI scores were higher in obese children. PI score, mSBI score, and salivary concentrations of 1,5-AG between the BMI categories were statistically significant (p < 0.001). The study emphasizes promoting preventive oral health regimes, health awareness campaigns, and nutritional educational programs among the pediatric population.
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Affiliation(s)
- Sara Ayid Alghamdi
- Department of Preventive Dental Sciences, College of Dentistry, Majmaah University, Al Majmaah 11952, Saudi Arabia; (B.A.); (A.A.); (S.S.B.); (J.T.T.); (A.A.)
| | - Aziza Aljohar
- Department of Pediatric Dentistry, King Faisal Hospital and Research Center, Riyadh 11564, Saudi Arabia;
| | - Basim Almulhim
- Department of Preventive Dental Sciences, College of Dentistry, Majmaah University, Al Majmaah 11952, Saudi Arabia; (B.A.); (A.A.); (S.S.B.); (J.T.T.); (A.A.)
| | - Abdullah Alassaf
- Department of Preventive Dental Sciences, College of Dentistry, Majmaah University, Al Majmaah 11952, Saudi Arabia; (B.A.); (A.A.); (S.S.B.); (J.T.T.); (A.A.)
| | - Smita Singh Bhardwaj
- Department of Preventive Dental Sciences, College of Dentistry, Majmaah University, Al Majmaah 11952, Saudi Arabia; (B.A.); (A.A.); (S.S.B.); (J.T.T.); (A.A.)
| | - Julie Toby Thomas
- Department of Preventive Dental Sciences, College of Dentistry, Majmaah University, Al Majmaah 11952, Saudi Arabia; (B.A.); (A.A.); (S.S.B.); (J.T.T.); (A.A.)
| | - Abdullah Almalki
- Department of Preventive Dental Sciences, College of Dentistry, Majmaah University, Al Majmaah 11952, Saudi Arabia; (B.A.); (A.A.); (S.S.B.); (J.T.T.); (A.A.)
| | | | - Sreekanth Kumar Mallineni
- Department of Preventive Dental Sciences, College of Dentistry, Majmaah University, Al Majmaah 11952, Saudi Arabia; (B.A.); (A.A.); (S.S.B.); (J.T.T.); (A.A.)
- Center for Transdisciplinary Research (CFTR), Saveetha Institute of Medical and Technical Sciences, Saveetha Dental College, Saveetha University, Chennai 600077, India
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Alzahrani AAH, Alharbi RA, Alzahrani MSA, Sindi MA, Shamlan G, Alzahrani FA, Albanghali MA, Sindi AAA. Association between periodontitis and vitamin D status: A case-control study. Saudi J Biol Sci 2021; 28:4016-4021. [PMID: 34220259 PMCID: PMC8241627 DOI: 10.1016/j.sjbs.2021.04.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/28/2021] [Accepted: 04/04/2021] [Indexed: 01/07/2023] Open
Abstract
Vitamin D deficiency and periodontitis are commonly prevalent among Saudi adults. However, the association between periodontitis and vitamin D status has not been well documented. This study aims to examine the association between periodontitis and vitamin D status among adults in the Albaha region of Saudi Arabia. A case-control study of 123 Saudi adults was conducted; 60 had severe or moderate periodontitis, and 63 were periodontally healthy. Data was collected by an online self-reported sociodemographic questionnaire. All participants then underwent a full periodontal examination. Blood samples were also provided to assess participants' vitamin D statuses through serum levels of 25-hydroxyvitamin D (25(OH)D). A total of 60 cases and 63 controls matched for BMI (30.2 ± 4.86 kg/m2), age (40.01 ± 7.73 years), and sex (46.3% and 53.7% male and female, respectively) participated in the study. Mean levels of 25(OH)D were significantly lower in periodontitis participants than in controls (25.03 ± 8.55 ng/ml, 29.19 ± 12.82 ng/ml, p = 0.037, respectively). Lower odds of periodontitis were detected per unit of 25(OH)D level (OR 0.964, 95% CI; 0.931-0.999, p = 0.043). In conclusion, periodontitis is significantly associated with deficient and insufficient levels of vitamin D among Saudi adults in the Albaha region. Future longitudinal research with a larger sample size may be suggested to confirm these results.
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Affiliation(s)
- Abdullah Ali H. Alzahrani
- Dental Health Department, Faculty of Applied Medical Sciences, Albaha University, Albaha, Saudi Arabia,Corresponding author at: Dental Health Department, Faculty of Applied Medical Sciences, Albaha University, P.O. Box 18, Albaha 65951, Saudi Arabia.
| | - Raed A. Alharbi
- Department of Laboratory Medicine, Faculty of Applied Medical Sciences, Albaha University, Albaha, Saudi Arabia
| | | | - Mohammed A. Sindi
- Department of Primary Health Care Administration, Public Health Directorate, 26522 Taif, Saudi Arabia
| | - Ghalia Shamlan
- Department of Food Science and Nutrition, College of Food and Agriculture Sciences, King Saud University, Riyadh 11362, Saudi Arabia
| | - Faisal A. Alzahrani
- Dental Health Specialist, Department of Medical Services General Administration, Public Security, The Saudi Ministry of Interior, Riyadh, Saudi Arabia
| | - Mohammad A. Albanghali
- Public Health Department, Faculty of Applied Medical Sciences, Albaha University, Albaha, Saudi Arabia
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Estimation of the Periodontal Inflamed Surface Area by Simple Oral Examination. J Clin Med 2021; 10:jcm10040723. [PMID: 33673121 PMCID: PMC7917734 DOI: 10.3390/jcm10040723] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 02/05/2021] [Accepted: 02/08/2021] [Indexed: 11/16/2022] Open
Abstract
The periodontal inflamed surface area (PISA) is a useful index for clinical and epidemiological assessments, since it can represent the inflammation status of patients in one contentious variable. However, calculation of the PISA is difficult, requiring six point probing depth measurements with or without bleeding on probing on 28 teeth, followed by data input in a calculation program. More simple methods are essential for screening periodontal disease or in epidemiological studies. In this study, we tried to establish a convenient partial examination method to estimate PISA. Cross-sectional data of 254 subjects who completed active periodontal therapy were analyzed. Teeth that represent the PISA value were selected by an item response theory approach. The maxillary second molar, first premolar, and lateral incisor and the mandibular second molar and lateral incisor were selected. The sum of the PISAs of these teeth was significantly correlated with the patient’s PISA (R2 = 0.938). More simply, the sum of the maximum values of probing pocket depth with bleeding for these teeth were also significantly correlated with the patient’s PISA (R2 = 0.6457). The simple model presented in this study may be useful to estimate PISA.
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Relationship of Porphyromonas gingivalis and Alzheimer's disease: a systematic review of pre-clinical studies. Clin Oral Investig 2021; 25:797-806. [PMID: 33469718 DOI: 10.1007/s00784-020-03764-w] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 12/21/2020] [Indexed: 12/13/2022]
Abstract
OBJECTIVES This study aimed to analyze the following PICO question: Are animals infected with Porphyromonas gingivalis (P. gingivalis) or bacterial lipopolysaccharide (Pg-LPS) more affected by neurodegeneration, similar to the pathogenesis generated by Alzheimer's disease (AD), compared with non-infected animals? METHODS Databases PubMed, Lilacs, SciELO, Science Direct, Scopus, Web of Science, and Cochrane were searched for pre-clinical in vivo studies in which mice were infected with P. gingivalis or received Pg-LPS, in order to assess the brain tissue and cognitive impairment. No limit for date or publication language was imposed and this study was registered at the International Prospective Register of Systematic Reviews (PROSPERO), with nine articles included. Syrcle's protocol was used to evaluate bias in the selected studies. RESULTS Nine articles were included. Infection by P. gingivalis or the administration of Pg-LPS increased the production of the inflammatory mediators, TNF-α (tumor necrosis factor-alpha), IL-6 (interleukin-6), and IL-1β (interleukin-1beta), augmented Aβ (amyloid beta) production, and activated the complement system, causing inflammation, brain tissue degeneration, and cognitive impairment, consistent with the damage in AD. CONCLUSIONS Infection by P. gingivalis and Pg-LPS administration appears to be in relation with the pathogenesis of AD by activating the complement cascade, increasing Aβ production and augmenting pro-inflammatory cytokine expression, causing age-dependent brain inflammation, neuroinflammation, and neurodegeneration. CLINICAL RELEVANCE Taking into account the importance of holistic treatment in the dental office, this study focuses on identifying highly prevalent oral diseases, such as periodontal disease, as risk factors for the aggravation of degenerative diseases in the elderly population.
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