Association of Adiposity with Periodontitis and Metabolic Syndrome: From the Third National Health and Nutrition Examination Survey of United States.

This study explored the epidemiological role of central adiposity and body mass index (BMI) in terms of clinical attachment loss (CAL)/pocket depth (PD) and metabolic syndrome components. This study included data from the National Health and Nutrition Examination Survey III of America on 12,254 adults aged 20 years of age or older with a blood sample, anthropometric measurements, and a periodontal examination. Clinical periodontitis measurements, including CAL and PD, were classified into quintiles or quartiles and compared.

Validity of a combination of periodontal pathogens and salivary biomarkers as predictors of periodontitis.

Objective: Chronic periodontitis is caused by multiple risk factors. To predict chronic periodontitis in older people, we evaluated the association between a combination of major periodontal pathogens and salivary biomarkers and the presence of periodontitis.

Methods: Stimulated saliva samples were collected to analyze the prevalence of Porphyromonas gingivalis, Treponema denticola, Tannerella forsythia, and Prevotella intermedia, as well as four biomarkers: interleukin (IL)-1β, IL-6, tumor necrosis factor-α (TNF-α), and prostaglandin E2 (PGE2).

Influence of Chewing Ability on Elderly Adults' Cognitive Functioning: The Mediating Effects of the Ability to Perform Daily Life Activities and Nutritional Status.

Chewing ability is also related to activities of daily living (ADLs) and nutritional status; however, these associations have not been firmly established. We examined chewing ability as a predictor variable and explored its relationship with cognitive functioning as mediated by ADLs and nutritional status data were collected by face-to-face interviews. Patients were receiving home healthcare service in Mun-gyeong city, Gyung-buk, Korea.

Effect of Molar Occlusal Balance on Cognitive Function in the Elderly.

Background: Elderly people with dementia, who are increasing at a rate comparable to the rate at which theelderly population is growing, are becoming a serious social problem in Korea. Therefore, the purpose of this study was to investigate the association between molar occlusal balance and cognitive function among Koreans aged 65 years and older.

Methods: A total of 308 participants aged 65 years and older who attended a senior center were recruited for the study with their consent.

Estimation and change of edentulism among the Korean population: Korea National Health and Nutrition Examination Survey 2007-2018.

Objectives: To estimate the prevalence of edentulism according to the socio-demographic variables of Korean adults between 2007 and 2018 and to analyze the trends.

Methods: This study was conducted using raw data from the Korea National Health and Nutrition Examination Survey (KNHANES) from 2007 to 2018. Edentulism was defined as the absence of upper and lower teeth or the retained root of the missing teeth.

More Teeth and Posterior Balanced Occlusion Are a Key Determinant for Cognitive Function in the Elderly.

Age-related decline in cognitive function is a major challenge in geriatric healthcare. A possible explanation is that the tooth loss or low chewing ability is at cause of cognitive impairment or dementia. The study aimed to investigate the potential relationship between chewing ability and cognitive function in the elderly.

Association between mastication-related factors and the prevalence of dementia in Korean elderly women visiting senior centres.

Objective: The purpose of this study was to evaluate the mastication ability of elderly women by assessing the number of their remaining teeth, subjective mastication comfort, subjective chewing ability of five food items, relative occlusion balance and mastication performance involving in chewing gum.

Background: Korea has already entered an aged society, issues related to the elderly are also growing; for example, dementia is emerging as a social problem. In addition, oral health of the elderly is very important because it is directly related to nutrient intake.

Presence of Metabolic Syndrome Components Is Associated with Tooth Loss in Middle-Aged Adults.

Purpose: In general, the prevalence of metabolic syndrome (MS) and tooth loss increases with age. We investigated the relationship between the presence of MS, its elements, and tooth loss in middle-aged Korean adults.

Materials And Methods: This study included Korean adults between 30 and 64 years of age who resided in the capital area of Seoul.

In vivo and in vitro assessment of the bleaching effectiveness of a brush-off patch containing 3.0% hydrogen peroxide.

Objectives: To evaluate the efficacy of a brush-off patch containing 3.0% hydrogen peroxide, which is a new over-the-counter (OTC) product for tooth whitening, and determine the optimal protocol for use.

Materials And Methods: We performed an in vitro study using hydroxyapatite specimens and a clinical trial involving 140 volunteers.

Lead exposure may affect gingival health in children.

Background: Several studies have reported the harmful effects of lead poisoning. However, the relationship between lead exposure and oral health of children has not been well defined. The aim of this study was to investigate the relationship between blood lead level (BLL) and oral health status of children.

Relationship between the activities of daily living, oral health-related quality of life and dementia.

Aim: The aim of the present study was to investigate the association between the activities of daily living and the oral health-related quality of life and dementia in older adults.

Methods: Over a period of 18 months, we visited 12 elderly care facilities and recruited 375 participants, 345 of whom were selected to undergo oral health examinations and oral health-related surveys. Each investigation was carried out face-to-face by a professional worker.

Factors affecting use of word-of-mouth by dental patients.

Objectives: Word-of-mouth (WOM) refers to communication among consumers, which greatly influences the marketing strategies of dental clinics. This study aimed to explore factors that affect use of WOM by dental patients and to analyse their pathways.

Methods: The participants were 520 outpatients from four private dental clinics.

Dental amalgam exposure can elevate urinary mercury concentrations in children.

Objectives: Owing to its cost-effectiveness and operative convenience, dental amalgam remains in use as a restorative material for tooth caries in children in many countries. The aim of this study was to evaluate the relationship between dental amalgam exposure and urinary mercury (U-Hg) concentrations in children.

Methods: In this longitudinal study, 463, 367 and 348 children, 8-11 years of age, were evaluated at baseline, and at the first and second follow-up visits, respectively.

Polycan suppresses osteoclast differentiation and titanium particle-induced osteolysis in mice.

Particle-induced osteolysis is a major issue, and it is most likely the result of enhanced osteoclast activation in the pathogenesis of various skeletal diseases. This study investigated whether the inhibitory effect that Polycan has on osteoclast differentiation can be used to treat osteolysis induced by titanium (Ti) particles. To this end, the effects of Polycan were examined in terms of the cytotoxicity, osteoclast differentiation, cytokine expression, and Ti-induced calvarial osteolysis.

Metabolic syndrome parameters in adolescents may be determinants for the future periodontal diseases.

Aim: The prevalence of metabolic syndrome (MetS) increases even in adolescents. The evidence that MetS is associated with the periodontal diseases in adolescents has been understudied. Therefore, our aim was to assess the association between MetS parameters and gingivitis in adolescents.

Burnout and its related factors in Korean dentists.

Objectives: Dentistry has been identified as one of the most stressful work environments. Knowledge of modifiable work-environment factors related to job stress could lead to a strategy and policy to provide a better work environment for dentists. The aims of this study were to examine the degree and distribution of burnout and to determine the factors associated with burnout subscale of Korean dentists.

Serum C-reactive protein and immunoglobulin G antibodies to periodontal pathogens may be effect modifiers of periodontitis and hyperglycemia.

Background: Serum C-reactive protein (CRP) is elevated in both periodontitis and type 2 diabetes mellitus through inflammation. Aggregatibacter actinomycetemcomitans and Porphyromonas gingivalis have been found in periodontal pockets in patients with diabetes. This study examines effect modification by examining the extent to which the associations between periodontitis and hyperglycemia were different by levels of serum CRP and periodontal pathogens.

The relationship between metabolic conditions and prevalence of periodontal disease in rural Korean elderly.

The aim of this study was to investigate the relationship between the duration and number of components of metabolic syndrome and periodontal disease among rural elderly in Korea over 60 years old. This longitudinal study consisted of 399 participants who underwent regular health examinations at Seongju-gun Public Health Center from 2000 to 2007. The components of metabolic syndrome (diabetes mellitus, hypertension, obesity, and hypercholesterolemia) were evaluated from clinical records of Seongju-gun Public Health Center, which were recorded from 2000 to 2007, and periodontal examination by Community Periodontal Index, recorded from 2006 to 2007.

Dental composite fillings and bisphenol A among children: a survey in South Korea.

Aims: Bisphenol A (BPA)-based dental composites have commonly been used to fill dental cavities or seal pits and fissures on teeth. However, epidemiological evidence with regard to the BPA exposure from dental composites among children has rarely been reported. This study investigated whether there is a relationship between the BPA concentration in urine and the presence of composite restorations and sealants among South Korean children.

The strength of age effect on tooth loss and periodontal condition in Korean elderly.

Aging is a well-known risk factor associated with oral diseases. The aim of this cross-sectional study was to compare tooth loss and periodontal health between the relatively young elderly (65-74 years) and the old elderly (≥ 75 years) and to investigate the strength of the age effect on oral health status in the Korean elderly. Study population 65 years of age or older were selected from the participants of the Korean National Oral Health Survey (2006) (n = 1193).

Association between periodontitis and impaired fasting glucose and diabetes.

Objective: Many studies have reported that periodontal disease is associated with diabetes, but its relation with impaired fasting glucose (IFG) has been understudied. This study investigated the relationship between chronic periodontitis, IFG, and diabetes in the U.S.

The effect of intensive oral hygiene care on gingivitis and periodontal destruction in type 2 diabetic patients.

Purpose: This study aimed to investigate the effects of oral hygiene care by oral professionals on periodontal health in type 2 diabetes mellitus patients.

Materials And Methods: Diabetic participants were recruited at a university hospital and matched at a 1:1 ratio by age and gender, and randomly allocated into intervention (40 people) and control groups (35 people). Tooth brushing instruction, oral health education, and supra-gingival scaling were implemented in all patients at baseline.

More missing teeth are associated with poorer general health in the rural Korean elderly.

The aim was to investigate the association between missing teeth and general health conditions in elderly Korean people. This cross-sectional study was conducted as a part of a health-screening program supported by the National Health Insurance Corporation of Korea in a local region of Sungju-gun, Gyeongsangbuk-do from 2000 to 2006. The participants were 3611 in number (1494 males and 2117 females) aged 60 years and over.

Morphological changes in Streptococcus mutans after chewing gum containing xylitol for twelve months.

Few studies have been conducted to evaluate the effect of xylitol on the virulence and morphology of Streptococcus mutans (S. mutans). This study was conducted to evaluate changes in the morphology and virulence of S.