Association Between Sealant and Early Impairment of First Molars in 6-14-Year-Olds: A 9-Year Follow-Up Using South Korean Cohort Data.

Objectives: This study aimed to analyse the 2010-2018 cohort data of the National Health Insurance Service to examine the association between applying sealants in the first molars of children and their early dental impairment.

Methods: Based on the two-level mixed effect model (individual four teeth), the study participants were divided into two groups: those with sealants on all four first molars and those without sealants to determine the association between sealants and early impairment. We analysed teeth that had undergone extraction or canal filling to determine early impairment.

Association of periodontal disease treatment with mortality in patients with dementia: a population-based retrospective cohort study (2002-2018).

Dementia is one of the leading causes of death worldwide. In this study, we analyzed the association of periodontal treatment with the risk of death in patients with dementia. The analyzed data were obtained by linking the National Health Insurance Corporation claims data between 2002 and 2018 to the Statistics Korea death registry.

Disparity in access for people with disabilities to outpatient dental care services: a retrospective cohort study.

Background: People with disabilities face difficulties in oral health management and gaining access to dental care. The availability of a regular source of dental care (RSDC) is an important factor that influences the access to health services and care management. The purpose of this study was to determine the effect of the availability of RSDC on the number of annual dental visits and dental expenses per visit among people with disabilities.

The effects of orthodontic treatment on personal dental expenditures in South Korea: a follow-up study using Korean health panel survey.

Background: This study aimed to investigate the effects of orthodontic treatment on cumulative out-of-pocket (OOP) expenditures for up to 8 years and the factors contributing to changes in individual OOP dental expenses.

Methods: The data of adults aged ≥19 years, 218 with experience of orthodontic treatment (OT group) and 654 without experience of orthodontic treatment (non-OT group) were extracted from the Korea Health Panel Survey between 2009 and 2017 using the propensity score matching method. The total personal OOP expenditure for dental care incurred after orthodontic treatment in the OT group and that incurred in the matched non-OT group were calculated.

Travel Time for Dental Care Services Based on Patient Preference in South Korea.

This study analyzed patient preferences using travel time from residence to dental institution when selecting dental care services. We used data from the Korean Health Panel from 2008 to 2017 and analyzed each dental service episode. Since the distribution of travel time was skewed to the left, median travel time was analyzed.

Effects of tooth loss on functional impairment in elderly: A secondary data analysis of elderly cohort in the South Korea.

Introduction: This study aimed to assess the association of tooth loss with physical and cognitive impairments in the elderly aged over 65 years.

Methods: The Elderly Cohort database (2008-2013) of National Health Insurance Services in South Korea was used; 1485 individuals who underwent physical impairment evaluation and 1410 individuals who underwent cognitive impairment evaluation were analysed. The dependent variables were the standardized physical and cognitive function score.

Dental Expenditure by Household Income in Korea over the Period 2008-2017: A Review of the National Dental Insurance Reform.

Since 2009, the National Health Insurance in Korea (NHI) has been implementing a series of policies to expand the scope of dental benefits. This study reviewed the changes in co-payments and dental use patterns before (2008 to 2012) and after (2013 to 2017) the NHI's dental health insurance reform. The study used Korea Health Panel data of 7681 households (16,493 household members) from a 10-year period (2008-2017).

The association between oral health literacy and oral health behaviors in North Korean defectors: a cross-sectional study.

Background: The present study aimed to investigate the association between oral health literacy and oral health behaviors among North Korean defectors.

Methods: This study involved the collection of self-reported questionnaires from 123 North Korean defectors visited a dental clinic that offered complimentary services, to receive dental treatment in a metropolitan area of South Korea from December 2017 to April 2018. Oral health literacy was measured with the Test of Korean Functional Health Literacy in Dentistry (TOKFHLiD), which consists of 30 items concerning verbal oral health literacy and 42 items concerning functional oral health literacy (28 items for reading comprehension and 14 items for numeracy).

The association between Antonovsky's sense of coherence and job stress among dental hygienists in Korea.

Objective: High stress levels experienced by medical professionals are a well-established phenomenon in current literature. However, there are few studies focusing on stress experienced in the field of oral health or on the sense of coherence (SOC) that helps to actively respond to job stress. The purpose of this study was to analyse if there is an association between SOC and job stress among dental hygienists in Korea.

Spatial barriers and the bypassing of nearby dental clinics for dental services: a secondary data analysis in Korea.

Objective: This study aimed to calculate the distance patients travel to dental clinics, the rate of bypassing nearby dental clinics and the distance covered when bypassing nearby dental clinics, and explored factors associated with patients' spatial access to dental clinics.

Design: A secondary data analysis.

Setting: Korea Health Panel.

Implant survival and patient satisfaction in completely edentulous patients with immediate placement of implants: a retrospective study.

Background: This study evaluated full-arch rehabilitation of patients with immediately placed implants in terms of the cumulative implant survival rate, risk factors for implant failure, and patient satisfaction.

Methods: Time-to-event data of 52 completely edentulous jaws (370 implants) were collected using retrospective clinical chart review for the time period from 2008 to 2014. A conventional two stage approach for surgery was adopted to immediately placed implants in the maxilla, and immediate placement and immediate loading protocols for the mandible were followed.

The association between visual impairment and dental care utilization in the Korean elderly.

Introduction: Individuals with visual impairment cannot recognize early-stage oral diseases, thus fail to receive prompt treatment.

Aims: To evaluate the association between visual impairment and dental care utilization in patients aged ≥65 years.

Design: Retrospective analysis.