Impact of oral diseases on 12- and 15-year-old children's quality of life: condition-specific oral health related quality of life analysis.

BACKGROUND: Oral diseases can affect children's quality of life. The aim of the present study was to assess the Condition-Specific (CS) impacts from oral diseases in 12- and 15-year-old Thai population using data from the two consecutive national oral health-related quality of life surveys. METHODS: The oral health-related quality of life surveys were conducted for this study as a part of 6th and 7th national oral health survey. The study sample of 1,066 12- and 815 15-year-olds from 6th national oral health survey; and 556 12- and 351 15-year-olds from 7th national oral health survey were from Bangkok and four regions of Thailand. Oral impacts were assessed by the Child-Oral Impacts on Daily Performances index for 12- and Oral Impacts on Daily Performances index for 15-year-olds. The overall impacts and CS impacts attributed to oral diseases were calculated. The detailed characteristics of the CS impacts were analyzed. Cochran's Q test and McNemar's test were used to determine the difference between the proportions of CS impacts of caries, gingival diseases, oral lesions, and malocclusion. RESULTS: CS impacts-caries were prevalent for both age, followed by gingival disease and oral lesions. CS impacts-caries were the highest in the intensity and extent for both age groups. CS impacts-caries were significantly higher than those of gingival diseases for eating, speaking, relaxing, emotional state, and studying. CS impacts-gingival disease was significantly higher than caries for cleaning in one survey. CONCLUSIONS: CS impacts-caries were the most prevalent and severe among adolescent. Gingival disease was infrequently related to severe impacts on daily performances.

Profiling ultra-processed foods in Thailand: sales trend, consumer expenditure and nutritional quality.

BACKGROUND: Ultra-processed foods (UPF) are associated with adverse health outcomes. This study aimed to analyse the national trends in retail sales, consumer expenditure and nutritional quality of UPFs in Thailand. METHODS: The study used data from the Euromonitor Passport database for analysis of retail sales and consumer expenditure, and from the Mintel Global New Products Database for nutritional analysis using the WHO Southeast Asian Region nutrient profile model. RESULTS: The study found the highest per capita sales volume and value of UPFs in 2021 were sauces, dressings & condiments (8.4 kg/capita) and carbonated soft drinks (27.1 L/capita), respectively. However, functional & flavoured water, ready-made meals and baked goods had the highest observed (2012-2021) and expected (2021-2026) sales growth. Supermarkets were responsible for most of the UPF sales since 2012, but convenience stores had larger growth in retail values. Growth in consumer expenditure per capita on UPFs from 2012 to 2020, ranged between 12.7% and 34%, and till 2026 is forecast to grow between 26% and 30%. More than half of UPFs exceeded at least one nutrient cutoff, 59.3% for total fats, 24.8% for saturated fats, 68.2% for total sugars and 94.3% for sodium. CONCLUSIONS: The findings suggest a need for regulatory and non-regulatory measures such as UPF taxation and marketing restrictions, and market incentives for producing non-UPFs. A system for regularly monitoring and evaluating healthiness (both nutritional and processing aspects) of food products, especially UPFs, is required.

Inequalities in dental service utilization among Thai adults from 2000 to 2017.

OBJECTIVES: The Universal Coverage Health Scheme (UCS) was implemented in Thailand in 2002 to increase access to health services among the Thai population. This study aimed to evaluate socioeconomic inequalities in dental service utilization (DU) before and after UCS implementation and to assess factors associated with DU among Thai adults. METHODS: This study is based on secondary data from four Thai national oral health surveys in 2000-2001, 2006-2007, 2012 and 2017. Whether an individual from a nationally representative sample of Thai adults aged 35-44 went to see the dentist during the past year was used to define DU. The slope index of inequality (SII) and relative index of inequality (RII) were used to assess and compare education and income-related inequalities in DU. Poisson regression was used to assess factors associated with DU. Income inequalities were not reported for the year 2001 (Income data not available). RESULTS: Although DU increased after UCS implementation, socioeconomic inequalities persisted. DU was concentrated among high-education and income groups. Absolute educational inequalities were 0.16 (95% CI: 0.09-0.22), 0.21 (95% CI: 0.10-0.32), 0.26 (95% CI: 0.14-0.38) and 0.25 (95% CI: 0.18-0.32) in 2001, 2007, 2012 and 2017, respectively. Absolute income inequalities were 0.15 (95% CI: 0.04-0.26), 0.07 (95% CI: -0.04-0.18) and 0.12 (95% CI: 0.05-0.19) in 2007, 2012 and 2017, respectively. Occupation, type of health insurance scheme, sex and oral health-related behaviour were associated with DU. CONCLUSION: UCS has improved accessibility to dental services, but UCS alone might not narrow the inequalities gap for Thai adults.

Choosing an effective food classification system for promoting healthy diets in Thailand: a comparative evaluation of three nutrient profiling-based food classification systems (government, WHO, and Healthier Choice Logo) and a food-processing-based food classification system (NOVA).

Introduction: This study aimed to assess the nutritional quality of food and beverage products in Thailand by comparing four different food classification systems: the nutrient profiling-based food classification systems by the Department of Health (DOH), the WHO South-East Asia Region (WHO SEA), the Healthier Choice Logo (HCL), and the food-processing-based food classification system, NOVA. Methods: This study used secondary data from the Mintel Global New Products Database (N = 17,414). Food subgroups were classified differently based on these four systems. The DOH classified food products into three groups: Group A-healthy pass or meeting standard, Group B-not meeting the standard, and Group C-far below standard. The WHO SEA classified food products into two groups: marketing prohibited products and marketing permitted products. The HCL classified food products into two groups: eligible products for the logo; and ineligible products for the logo. The NOVA classified food products into four groups: unprocessed or minimally processed foods (MP), processed culinary ingredients (PCI), processed foods (P), and ultra-processed foods (UPF). Descriptive statistics (percentage and frequency) were used for analysis. Agreement analysis was conducted using Cohen's kappa statistic between each pair of food classification systems. Results: Of the total sample that could be classified by any of the four classification systems (n = 10,486), the DOH, the WHO SEA and the HCL systems classified products as healthy (Group A, marketing permitted or eligible for HCL logo) at 10.4, 11.1, and 10.9%, respectively. Only 5.6% were classified as minimally processed foods using NOVA and 83.1% were ultra-processed foods (UPFs). Over 50% of products classified as healthy by the nutrient profiling systems were classified as UPF according to the NOVA system. Products that were eligible for the HCL had the highest proportion of UPF products (84.4%), followed by the Group A products (69.2%) and the WHO marketing-permitted products (65.0%). Conclusion: A hybrid food classification approach taking both nutrients and food processing into account is needed to comprehensively assess the nutritional quality of food and beverage products in Thailand.

Oral status is associated with chewing difficulty in Thai older adults: data from a National Oral Health Survey.

BACKGROUND: The number of older adults in Thailand is increasing. Better chewing ability is associated with healthy aging. Although numerous studies have demonstrated the relationship between social backgrounds, dental service utilization, oral status and chewing difficulty, there is no study in Thailand using national oral health data to identify the variables involved with chewing difficulty among Thai older adults. Therefore, the aim of this study was to determine the association between oral status, and chewing difficulty, adjusting for social backgrounds, and dental service utilization among Thai older adults. METHODS: This cross-sectional study used data from the eighth Thai National Oral Health Survey (TNOHS). A stratified multi-stage method was used for sample selection. The eighth TNOHS was conducted from June-August 2017. Data were collected using interviews and clinical oral examinations by trained interviewers and trained dentists, respectively. The bivariate analysis, chi-square test was used to explore the associations between social backgrounds, dental service utilization, oral status, and chewing difficulty. Dependent variables with p-values of < 0.2 for their association with independent variables in the bivariate analysis were entered into the multiple logistic regression models. RESULTS: This study found that older adults with at least 27 teeth (p < 0.05), or at least eight occlusal pairs (p < 0.05) or income exceeding 15,000 baht per month (p < 0.05) were more likely to have less chewing difficulty (p < 0.001), while the elderly who utilized dental services in the past 12 months were associated with more chewing difficulty than those who did not utilize dental services in the past 12 months (p < 0.001). CONCLUSIONS: We suggest that policymakers increase the number of preventive plans and set a goal for more than 20 remaining natural teeth and four posterior occlusal pairs in young and working aged people, especially in the low income group.

Associations of the number of remaining natural teeth and oral health behaviors with subjective chewing problems based on the Thailand National Oral Health Survey 2017.

PURPOSE: Few studies have examined the association of oral health behaviors with chewing ability.This study aimed to investigate the associations between the number of remaining natural teeth and oral health behaviors with subjective chewing ability among older Thai adults. METHODS: Analysis was carried out using data from the 8th Thailand National Oral Health Survey. Subjective chewing problems were assessed using self-reported questionnaires, and the number of remaining teeth by oral examination. Poisson regression with sampling weights was used to calculate the prevalence ratios (PRs) and 95% confidence intervals (CIs) for having chewing problems. RESULTS: Of the 2,310 participants (mean age, 67.2 ± 4.5 years), 53.3% had chewing problems. After adjusting for all covariates, significantly higher PRs for having chewing problems were observed among the participants without interdental cleaning (PR, 1.32; 95% CI, 1.06-1.65), without night-time brushing (PR, 1.12; 95% CI, 1.01-1.25), who were edentulous (PR, 1.16; 95% CI, 1.02-1.31), had urgent dental treatment within the past 12 months (PR, 1.15; 95% CI, 1.06-1.24), and who brushed for <2 min (PR, 1.10; 95% CI, 1.02-1.20). CONCLUSION: The number of remaining natural teeth and oral health behaviors were significantly associated with subjective chewing problems.

Development and Validation of an Oral Health Literacy Measurement for Primary School Children in Thailand.

Background: Oral health promotion programs have been implemented in primary schools for many years in Thailand. Oral health literacy has been introduced as a health promotion outcome; however, no assessment tool has been developed for this age group. The objective of this study was to develop and validate the Test of Functional Health Literacy in Dentistry for Primary School Children (P-TOFHLiD). Materials and Methods. The P-TOFHLiD was developed by modifying contents and outlines using a previously validated tool for older adults, then verified by two experts for face validity. A cross-sectional study was conducted with samples collected from 118 grade-six students from two government schools in Chiang Mai Province, Thailand. The P-TOFHLiD and a previously validated word recognition test were administered, followed by oral examination to assess reliability, concurrent validity, convergent validity, and predictive validity and establish the cut-off score of the tool. The statistical analysis was performed using SPSS version 25. Results: The internal reliability of P-TOFHLiD was good (α = 0.808). The correlation coefficient between the P-TOFHLiD and grade point average was 0.478 (p value <0.001), which is the represented concurrent validity of the tool. Coefficients between P-TOFHLiD and a word recognition test was 0.422 (p-value <0.001) for convergent validity. P-TOFHLiD was significantly correlated with the number of missing teeth from tooth decay (p-value <0.05), but the correlation coefficient was poor (r = -0.100). The cut-off scores for adequate oral health literacy were set at ≥21 out of the total scores of 26. Conclusion: P-TOFHLiD presented good validity and reliability and was ready to use for oral health promotion program evaluation. However, the predictive validity of the P-TOFHLiD in predicting oral health status was questionable only.

Inequalities in Periodontal Disease According to Insurance Schemes in Thailand.

Few studies have considered the effects of insurance on periodontal disease. We aimed to investigate the association between insurance schemes and periodontal disease among adults, using Thailand's National Oral Health Survey (2017) data. A modified Community Periodontal Index was used to measure periodontal disease. Insurance schemes were categorized into the Universal Coverage Scheme (UCS), Civil Servant Medical Benefit Scheme (CSMBS), Social Security Scheme (SSS), and "others". Poisson regression was applied to estimate the prevalence ratios (PRs) of insurance schemes for periodontal disease, with adjustment for age, gender, residential location, education attainment, and income. The data of 4534 participants (mean age, 39.6 ± 2.9 years; 2194 men, 2340 women) were analyzed. The proportions of participants with gingivitis or periodontitis were 87.6% and 25.9%, respectively. In covariate adjusted models, lowest education (PRs, 1.03; 95% CI, 1.01-1.06) and UCS (PRs, 1.05; 95% CI, 1.02-1.08) yielded significantly higher PRs for gingivitis, whereas lowest education (PRs, 1.20; 95% CI, 1.05-1.37) and UCS (PRs, 1.17; 95% CI, 1.02-1.34) yielded substantially higher PRs for periodontitis. Insurance schemes may be social predictors of periodontal disease. For better oral health, reduced insurance inequalities are required to increase access to regular dental visits and utilization in Thailand.

Changes in Population-Level Consumption of Taxed and Non-Taxed Sugar-Sweetened Beverages (SSB) after Implementation of SSB Excise Tax in Thailand: A Prospective Cohort Study.

BACKGROUND: Thailand has implemented a sugar-sweetened beverage (SSB) excise tax since September 2017, but questions remain about changes in individual-level SSB consumption after tax implementation. This study aimed to analyze the change in taxed and non-taxed SSB consumption in the Thai population. METHOD: This cohort study was carried out in 2018 and 2019. A total of 5594 persons who participated in both years were included in the analysis. Descriptive and t-test analyses were carried out in order to identify the significance of the difference between taxed and non-taxed SSB consumption in 2018 and 2019. RESULTS: A lower mean ratio of average taxed SSBs consumed to average non-taxed SSBs consumed was found to be statistically significant (p = 0.001). That is, the decline in taxed SSB consumption is significantly greater than that of the non-taxed consumption. The greater reduction in taxed SSB consumption than the non-taxed SSB consumption was found to be significant among males, older persons, the lower-income population, and the unemployed. CONCLUSIONS: Overall, the current SSB tax has the capacity to successfully discourage consumption of SSBs with high sugar level. The decline in SSB consumption is, however, not found across all socioeconomic groups. Thresholds for SSB-tiered tax structure may have to be reviewed.

Impact of sugar-sweetened beverage tax on dental caries: a simulation analysis.

BACKGROUND: The tiered sugar-sweetened beverage (SSB) tax was implemented in Thailand to encourage industries to reduce sugar content in beverages, and consequently reduce sugar consumption in the population. The aim of the study is to explore the expected impact of the new SSB tax policy in Thailand, a middle-income country in Asia, and other alternative policies on oral health outcomes as measured by the prevalence and severity of dental caries among the Thai population. METHODS: A qualitative system dynamics model that captures the complex interrelationships among SSB tax, sugar consumption and dental caries, was elicited through participatory stakeholder engagement. Based on the qualitative model, a quantitative system dynamics model was developed to simulate the SSB tax policy and other alternative scenarios in order to evaluate their impact on dental caries among Thai adults from 2010 to 2040. RESULTS: Under the base-case scenario, the dental caries prevalence among the Thai population 15 years and older, is projected to increase from 61.3% in 2010 to 74.9% by 2040. Implementation of SSB tax policy is expected to decrease the prevalence of dental caries by only 1% by 2040, whereas the aggressive policy is projected to decrease prevalence of dental caries by 21% by 2040. CONCLUSIONS: In countries where a majority of the sugar consumed is from non-tax sugary food and beverages, especially Asian countries where street food culture is ubiquitous and contributes disproportionately to sugar intake, SSB tax alone is unlikely to have meaningful impact on oral health unless it is accompanied with a comprehensive public health policy that aims to reduce total sugar intake from non-SSB sources.

Condition-Specific Oral Health Impacts in Thai Children and Adolescents: Findings From the National Oral Health-Related Quality of Life Survey.

This study was a part of the 7th National Oral Health Survey of Thailand and aimed to assess overall and condition-specific oral health-related quality of life of 12 and 15 year olds. Oral impacts were assessed using the Child-Oral Impacts on Daily Performances Index for 12 year olds and the Oral Impacts on Daily Performances index for 15 year olds. Overall oral impacts and condition-specific oral impacts (CS-impacts) were calculated. Detailed characteristics of CS-impacts were analyzed. Seventy-five percent of 12 year olds and 70.1% of 15 year olds had one or more oral impacts. CS-impacts attributed to dental caries were 37.8% and 36.5% for 12 and 15 year olds, respectively, followed by CS-impacts attributed to periodontal diseases and oral lesions. Dental caries was the most important cause of oral impacts. The severe impacts on daily performances of 12 year olds were mainly caused by dental caries, while those of 15 year olds related to dental caries and oral lesions. The majority of Thai children and adolescents experienced oral impacts. CS-impacts attributed to dental caries were most prevalent and most severe.

Associations between perceived needs for dental treatment, oral health-related quality of life and oral diseases in school-aged Thai children.

OBJECTIVES: To assess perceived needs for dental treatment (PNDT), oral health-related quality of life (OHRQoL) and oral diseases in a Thai school-aged national representative sample. In addition, relationships between PNDT and various aspects of OHRQoL, different levels of oral diseases as well as sociodemographic characteristics were assessed. METHODS: Study sample was a subsample of Sixth Thailand National Oral Health Survey. Data were collected on 1063 12-year-olds and 811 15-year-olds through oral examinations, interviews on PNDT and OHRQoL, using Child-Oral Impacts on Daily Performances (Child-OIDP) or Oral Impacts on Daily Performances (OIDP) indices and questionnaires containing questions on sociodemographic information. RESULTS: Prevalence rates of PNDT were 60.4% in 12-year-olds and 67.6% in 15-year-olds. PNDT were highly associated with OHRQoL with significant odds ratios that increased incrementally by the intensity of oral impacts. Oral impacts on eating, emotional stability and smiling and those attributed specifically to dental caries, periodontal diseases, malocclusion and tooth discolouration were associated with PNDT. The chances of having PNDT increased by number of untreated decayed teeth. Periodontal disease was associated with PNDT only when occurring to a great extent. Boys and children in some regional rural areas were less likely than girls and those living in Bangkok to have PNDT. CONCLUSIONS: Perceived needs for dental treatment were common and highly associated with levels of oral impacts, specifically impacts on eating, emotional stability and smiling performances. PNDT were also related to number of untreated decayed teeth, a great extent of periodontal disease, sex and geographical region.

School absence due to toothache associated with sociodemographic factors, dental caries status, and oral health-related quality of life in 12- and 15-year-old Thai children.

OBJECTIVES: The objective of this study is to assess prevalence and extent of school absence due to toothache, dental caries, and Oral Health-Related Quality of Life (OHRQoL) in a subsample of the Thailand national oral health survey. In addition, associations of school absence as the outcome variable with explanatory behavioral and sociodemographic variables, dental caries, and OHRQoL were investigated. METHODS: Study sample was half of the Sixth Thailand National Oral Health Survey sample (1,063 12-year-old and 811 15-year-old children). Children were orally examined and interviewed about OHRQoL using the Child Oral Impacts on Daily Performances or the Oral Impacts on Daily Performances indices. Children completed a sociodemographic and behavioral questionnaire on school absence due to toothache in current semester. RESULTS: Over a 3-month period, 5.1 percent of 12- and 4.4 percent of 15-year-olds absented themselves from school due to toothache. The number of days absent in 12-year-olds was significantly higher than in 15-year-olds. For 12-year-olds, OHRQoL and toothache were significantly associated with school absence. Severe dental decay was the main dental factor related to school absence but not significantly associated with school absence in the adjusted analyses. Children in lower school grades and those who received dental treatment in current semester were more likely to miss school compared with their counterparts. CONCLUSIONS: About one in 20 of Thai school-aged children reported missing school due to toothache. School absence due to toothache was inversely associated with the current year of study and positively with recently receiving dental treatment and with OHRQoL and toothache in 12-year-olds.

Using associations between oral diseases and oral health-related quality of life in a nationally representative sample to propose oral health goals for 12-year-old children in Thailand.

OBJECTIVES: This study was carried out to assess the associations between oral diseases and specifically oral health-related quality of life (OHRQoL) in a nationally representative sample of 12-year-old children in Thailand in order to classify children according to their levels of risk for adverse OHRQoL and to apply findings to formulate proposals for oral health goals. METHODS: Oral examinations and OHRQoL interviews using the Child-Oral Impacts on Daily Performances (Child-OIDP) schedule were conducted in 1,100 children as part of the Thailand National Oral Health Survey. The severity of oral impacts was categorised according to their 'intensity'. Associations of oral diseases and condition-specific (CS) OHRQoL impacts were investigated. RESULTS: Oral impacts were prevalent. Most were of low intensity; these were excluded from the analysis used to develop goals. At the threshold of moderate/high intensity, CS impacts attributable to dental caries, edentulous areas, periodontal disease and discolouration were reported by 18.5%, 0.2%, 8.7% and 2.6% of participants, respectively. Missing teeth was significantly related to CS impacts. Condition-specific impacts were 1.6 times and three to four times more likely to affect children with one decayed tooth and two or more decayed teeth, respectively. Children with gingivitis or calculus in three or more sextants were twice as likely and children with calculus and gingivitis in three or more sextants were 3.5 times more likely to report CS impacts. Based on these findings, these recommendations are proposed: all 12-year-old children should have fewer than two untreated decayed teeth; 60% of 12-year-old children should not have periodontal disease in any form in more than two sextants, and the proportion of 12-year-old children with calculus with gingivitis in three or more sextants should not exceed 5%. CONCLUSIONS: Measures of oral health and goals for oral health in children should include measures of OHRQoL.

Setting oral health goals that include oral health-related quality of life measures: a study carried out among adolescents in Thailand.

The aim of this study was to assess the association between oral diseases and condition-specific oral health-related quality of life (CS-OHRQoL) as a basis for proposing OHRQoL-based goals for the population of 15-year-olds in Thailand. Oral examinations and OHRQoL interviews were conducted with 871 15-year-olds as part of the Sixth Thailand National Oral Health Survey. The severity of oral impacts was categorized using "intensity". Associations between oral diseases and CS-OHRQoL were analyzed using chi-square and logistic regression. Thirty-nine percent of 15-year-olds experienced moderate/higher levels oral impacts on quality of life. Compared to those individuals with no tooth decay, adolescents with one or four or more decaying teeth were three and seven times more likely to experience moderate/higher impacts, respectively. Adolescents with extensive gingivitis in 3 or more mouth sextants were twice as likely to experience moderate/higher CS-impacts. Based on these findings, it is proposed that goals should focus on untreated decaying teeth and extensive gingivitis. Oral health goals for 15-year-olds should include specific OHRQoL measures.

Setting oral health goals that include oral health-related quality of life measures: a study carried out among adolescents in Thailand / Incorporação da qualidade de vida relacionada à saúde bucal em metas de saúde bucal: estudo conduzido em adolescentes tailandeses

The aim of this study was to assess the association between oral diseases and condition-specific oral health-related quality of life (CS-OHRQoL) as a basis for proposing OHRQoL-based goals for the population of 15-year-olds in Thailand. Oral examinations and OHRQoL interviews were conducted with 871 15-year-olds as part of the Sixth Thailand National Oral Health Survey. The severity of oral impacts was categorized using "intensity". Associations between oral diseases and CS-OHRQoL were analyzed using chi-square and logistic regression. Thirty-nine percent of 15-year-olds experienced moderate/higher levels oral impacts on quality of life. Compared to those individuals with no tooth decay, adolescents with one or four or more decaying teeth were three and seven times more likely to experience moderate/higher impacts, respectively. Adolescents with extensive gingivitis in 3 or more mouth sextants were twice as likely to experience moderate/higher CS-impacts. Based on these findings, it is proposed that goals should focus on untreated decaying teeth and extensive gingivitis. Oral health goals for 15-year-olds should include specific OHRQoL measures.

O objetivo deste estudo foi avaliar a associação entre doença bucal e a condição específica de qualidade de vida associada à saúde bucal (CS-OHRQoL), como base para propor OHRQoL metas para adolescentes tailandeses. Exame clínico bucal e entrevista foram realizados em 871 adolescentes na faixa etária de 15 anos, como parte da 6ª Pesquisa Nacional Tailandesa de Saúde Bucal. A severidade do impacto bucal foi categorizada usando-se a "intensidade". A associação entre doença bucal e CS-OHRQoL foi investigada usando-se o teste qui-quadrado e regressão lógica. Trinta e nove por cento da amostra reportaram impactos bucais de grau moderado/elevado. A probabilidade de reportar um impacto bucal de grau moderado/elevado dos adolescentes com um dente cariado e aqueles com 4 ou mais foi 3 e 7 vezes maior, respectivamente, quando comparada à dos adolescentes sem dentes cariados. A presença de gengivite severa em 3 ou mais sextantes dobrou a probabilidade de ocorrência do CS-impacto de grau moderado/elevado. Metas de saúde bucal para adolescentes devem incluir instrumentos específicos de OHRQoL.

Relationships between oral diseases and impacts on Thai schoolchildren's quality of life: evidence from a Thai national oral health survey of 12- and 15-year-olds.

OBJECTIVES: To assess the associations between oral disease and oral health-related quality of life (OHRQoL) in a nationally representative sample of 12- and 15-year-old Thai populations. METHODS: The study was part of Thailand National Oral Health Survey. Data on oral diseases using WHO criteria and OHRQoL using the Child-Oral Impacts on Daily Performances (Child-OIDP) for 12-year-olds and Oral Impacts on Daily Performances (OIDP) indexes for 15-year-olds were collected from 1063 12-year-olds and 811 15-year-olds. The associations of oral diseases and OHRQoL and perceived dental need were investigated using logistic regression models. RESULTS: Of 81.7% of 12-year-olds and 83.2% of 15-year-olds had impacts on OHRQoL. For both age groups, gingivitis was the most common oral disease (79.3% in 12-year-olds, 81.5% in 15-year-olds). Oral impacts were significantly associated with high levels of untreated decay. Perceived dental needs were significantly associated with untreated decay and extensive gingivitis for both age groups, and with calculus for 12-year-olds. Having decayed teeth was statistically associated with impacts on relaxing, emotion and study for both age groups. Gingivitis and calculus were significantly associated with impacts on smiling, study and social contact in 12-year-olds, and with impacts on smiling in 15-year-olds. CONCLUSIONS: Gingivitis was the most common oral disease whereas dental caries affected children's quality of life most. Dental caries impacted on various daily life performances while gingivitis and calculus related to psychosocial aspects in 12-year-olds.

The impacts of gingivitis and calculus on Thai children's quality of life.

AIM: To assess associations of socio-demographic, behavioural and the extent of gingivitis and calculus with oral health-related quality of life (OHRQoL) in nationally representative samples of 12- and 15-year-old Thai children. MATERIAL AND METHODS: In the Thailand National Oral Health Survey, 1,063 twelve-year olds and 811 fifteen-year olds were clinically examined and interviewed for OHRQoL using the Child-OIDP and OIDP indices, respectively, and completed a behavioural questionnaire. We assessed associations of condition-specific impacts (CS-impacts) with gingivitis and calculus, adjusted for socio-demographic and behavioural factors. RESULTS: Gingivitis and calculus were highly prevalent: 79.3% in 12-year and 81.5% in 15-year olds. CS-impacts relating to calculus and/or gingivitis were reported by 26.0% of 12-year and 29.6% of 15-year olds. Except for calculus without gingivitis, calculus and/or gingivitis in any form was significantly related to any level of CS-impacts. At a moderate or higher level of CS-impacts, there were significant relationships with extensive calculus and/or gingivitis in 12-year olds and for extensive gingivitis and gingivitis without calculus in 15-year olds. CONCLUSIONS: Gingivitis was generally associated with any level of CS-impacts attributed to calculus and/or gingivitis. CS-impacts were related more to gingivitis than to calculus.

The extent and correlates of gingival recession in non-institutionalised Thai elderly.

The purpose of this study was to describe the extent and distribution of gingival recession in Thai elderly. As part of a longitudinal geriatric oral health study, 453 community-dwelling dentate subjects, 51-92 years of age, were examined at baseline in 1999. All remaining teeth were measured on four periodontal sites to assess the amount of gingival recession. The percentage of sites with recession increased with age from 49.6% in 51-59 years of age to 72.0% in 70+ years of age (P < 0.001). Males exhibited greater levels of recession than females (P < 0.001). Regression analysis for the percentage of buccal sites with recession showed that recession was associated with age, gender, cervical abrasion, and amount of calculus (R2 = 0.15, P < 0.001). However, the regression model for the percentage of all sites with recession did not find an association between recession and cervical abrasion. Hence, it appears that gingival recession on different locations may involve different processes.