Life course social mobility, race and tooth loss in adulthood: The role of dental health services.

OBJECTIVES: To evaluate the extent to which dental care factors in adulthood modify and, at the same time, mediate the association between race/ethnicity and social mobility from childhood to adulthood with two oral health outcomes in adults. METHODS: In 2012, 1222 individuals 20-59 years old participated in the second wave of the Epi-Floripa Study in Florianopolis, Brazil. Exposures included social mobility based on adulthood and childhood events, dental care in previous years, type of dental care coverage, reason for dental visits and race. The number of missing and decayed teeth were dichotomised as MT >0 and DT >0. RESULTS: The prevalence of missing and decayed teeth was 61.9% and 23.0%, respectively. Age-sex adjusted inequalities in decayed and missing teeth among Black and White individuals were 41.2 percentage points (pp) (95% CI: 3.9-78.7) and 53.1 pp (19.5:86.7), respectively. Inequalities between those persistently higher and lower in socioeconomic position were 42.6 pp (14.6-70.7) and 90.0 pp (62.1-100). The Relative Excess of Risk due to Interaction (RERI) was not statistically significant (p < 0.05). Oaxaca-Blinder decomposition analyses showed that dental care variables accounted for a small proportion of inequalities. CONCLUSIONS: This result implies that dental care is unlikely to significantly reduce or increase oral health inequalities in this particular population.

Oral impact of dental prosthesis use in different patterns of tooth loss.

STATEMENT OF PROBLEM: Tooth loss is a critical indicator of oral health and negatively impacts oral health-related quality of life (OHRQoL) depending on the number and location of the missing teeth. Reports of oral rehabilitation have been conflicting depending on the tooth loss pattern and prostheses provided. PURPOSE: The purpose of this population-based study was to evaluate the association between the use of different dental prostheses according to different tooth loss patterns and OHRQoL. MATERIAL AND METHODS: A representative sample of 22 843 individuals aged between 15 and 75 years was recruited in Brazil. The dependent variable was the OHRQoL as measured by the score on the oral impact on daily performance (OIDP), and the main predictor was the pattern of tooth loss and prosthesis use. Covariates included sex, age, income, education, missing teeth, dental pain, and dental visits. The zero-inflated negative binomial regression was applied with sampling weights. RESULTS: Participants with only anterior missing teeth had an OIDP mean ratio, MR) 1.49 times higher than those without tooth loss and not wearing a prosthesis (95% CI=1.12-1.98); those with a distal extension, with anterior tooth loss MR=1.68 (95%CI=1.17-2.43); and complete edentulism in one or both jaws MR=1.53 (95%CI=1.04-2.25). Participants wearing a removable partial denture (RPD) or a combination of an RPD and fixed prostheses with a few missing teeth reported worse OIDP (MR=3.57, 95% CI=2.11-6.04) than those with fixed prostheses only or without a prosthesis. Individuals with edentulism using complete dentures in both jaws had lower OIDP scores (MR=0.9, 95% CI=0.59-1.37) than those using or those who do not use other categories of prosthetic rehabilitation. CONCLUSIONS: Some types of prosthetic rehabilitation were not associated with better OHRQoL in individuals with tooth loss. The impact of prosthetic rehabilitation was associated with the pattern of tooth loss.

Research on racial/ethnic inequities in oral health over the past 80 years: The role of racism.

AIM: This study aims to (1) describe trends in explanations provided for racial/ethnic inequities in dental caries and periodontitis, and (2) explore the patterns of relatedness among explanations for these inequities. MATERIALS AND METHODS: Highly cited publications based on studies indexed in the Scopus database were retrieved and assessed for eligibility. Explanations for racial/ethnic inequities were classified into eight different, but interrelated domains. We assessed trends and examined the relations among explanations using multiple correspondence analysis. RESULTS: A total of 200 articles among the most cited publications were selected. The proportion of studies invoking racism as an explanation for racial inequities in oral health increased from 0% to 14.3%, from 1937 to 2020. The proportions of individual socio-economic factors increased from 52.0% to 82.9%, and dental care from 28.0% to 62.9%. The remaining explanations were stable: psychological/behavioural processes (62.5%), biological factors (49.5%), contextual/area-level effects (24.0%) and immigrant paradox (4.0%). Multiple correspondence analysis revealed a smaller axial distance between racism and the following categories: studies from Brazil, recent publications and Blacks/Hispanics/mixed-race groups. Publications about immigrants were axially closer to the high-income countries category. CONCLUSIONS: Our findings call on dental researchers to consider racism as a cause for existing racial/ethnic inequities in oral health.

Racial inequality in complete dental prosthesis delivered: can public services reduce inequities?

OBJECTIVES: To investigate the association between access and delivery of complete dental prosthesis according to the proportion of the black population in Brazilian municipalities and to oral health policies. MATERIALS AND METHODS: Ecological data from 2017 to 2021 relating to the delivery of complete dentures stratified by race was collected in all Brazilian cities. We calculated a racial inequality indicator by subtracting the percentage of the black population from the percentage of complete dental prostheses that were delivered to blacks in each municipality. Logistic and linear regression models were carried out. RESULTS: We found that 49.2% (2737) of municipalities delivered complete prostheses. The service was more frequently available in municipalities where black individuals made up 20-80% (odds ratio [OR] = 1.45, 95% confidence interval [CI] 1.15; 1.81), those with dental specialty centers (DSC) (OR = 3.04, 95%CI 2.50; 3.68), and those with more oral health teams (OHTs) (OR = 3.43, 95%CI 2.81; 4.18). Where dental prostheses were available, racial inequities favored the white population by 7.7 percentage points (p < 0.01). Increased inequality was observed in municipalities with more OHTs and/or a higher proportion of black individuals (>80%). CONCLUSIONS: Although municipalities with a DSC, and with more OHTs offer better access to complete dental prosthesis for blacks, racial inequality still impacts the delivery of the service. Primary and secondary healthcare services may even exacerbate this. CLINICAL RELEVANCE: Policymakers should monitor racial inequities in healthcare services. The currently unmet needs of black people are critical, especially in cities with more OHTs and/or increased proportions of black people.

A qualitative analysis of denture wearing experience affecting the quality of life of older adults.

OBJECTIVE: To explore how denture-related experiences affect older adults' quality of life using a qualitative assessment of the Oral Health Impact Profile for Edentulous individuals (OHIP-Edent). MATERIALS AND METHODS: Twenty elderly individuals were interviewed before and 3 months after delivering new complete dentures, using an open-ended interview guide based on the OHIP-Edent. Interviews were audio-recorded and transcribed. Data were open coded and thematically analyzed following a Grounded Theory approach. Findings were integrated and constantly compared to understand the interviewees' difficulties, beliefs, and perceptions. RESULTS: Three interconnected themes were developed: functional and psychosocial impairments, and coping strategies. Even when posed as an open-ended format, the wording of some OHIP-Edent items was confusing while others were not relevant to the respondents. New categories related to speaking, smiling, swallowing, emotional and functional coping emerged from the interviews. Interviewees adapted to chewing and swallowing difficulties through food avoidance, modification of food choice and preparation techniques, and changes in dietary behaviors. CONCLUSIONS: Denture wearing is a daily challenging experience that encompasses various functional and psychosocial aspects and sheds light on the need for addressing the coping strategies employed by patients, as the current OHIP-Edent items may not fully represent other deemed important aspects of the quality of life of individuals who wear dentures. CLINICAL RELEVANCE: Dentists must not solely rely on structured questionnaires to explore the impact of denture wearing and treatment outcomes. Clinicians can use a more holistic approach to comprehend older adults' experiences with dentures including advice about coping mechanisms, food preparation techniques, and meal planning.

Residual dentition, prosthesis type and oral health-related quality of life in Uruguayan adults.

OBJECTIVES: To investigate the association between different types of dental prostheses (and residual dentition) and oral health-related quality of life (OHRQoL). METHODS: A population-based study with a representative sample of adults and older adults in Uruguay (2010-2011). The dependent variable was the score on the oral impact on daily performance (OIDP), and the main predictor was the pattern of tooth loss and prosthesis use. Covariates included sex, age, socioeconomic status, education, missing teeth, pain and decayed teeth. Negative binomial regression was used. RESULTS: The sample comprised 762 participants. Those participants not wearing a prosthesis and with extensive tooth loss had a mean OIDP of 3.1 (95% CI = 1.6-6.2), while those wearing removable partial dentures (RPD) and having <12 missing teeth had a mean OIDP of 3.6 (95% CI = 1.3-10.0). Participants with a free-end saddle had the highest mean OIDP, at 4.9 (95% CI = 2.0-12.1). For participants with ≤12 missing teeth, any additional missing tooth was associated with an 11% higher OIDP score. Participants who wore RDPs reported fewer impacts on OHRQoL if they had extensive tooth loss or anterior tooth loss than those with a free-end saddle, or who had lost fewer teeth. CONCLUSIONS: The use of RPDs is associated with better OHRQoL. These findings may be valuable in clinical practice and prosthetic planning.

Comparison of the efficacy of different techniques to seal the alveolus during alveolar ridge preservation: Meta-regression and network meta-analysis.

AIM: To evaluate the efficacy of different techniques to seal the alveolus (flap advancement [FA], open healing with barrier [OHB], and open healing without barrier [OHNB]) during alveolar ridge preservation (ARP) in terms of horizontal ridge width resorption. MATERIALS AND METHODS: Randomized trials of at least 2 months duration comparing at least two techniques to seal the alveolus against each other or against spontaneous healing (SH) were eligible. Searches were conducted in MEDLINE via PubMed, EMBASE, Scopus, and Cochrane Central. Conventional meta-analysis, meta-regression, and network meta-analysis (NMA) were conducted, with clinical and tomographic ridge width changes as outcomes. Predictive intervals (95% PI) were reported. RESULTS: Twenty-two studies were included, accounting for 52 study arms. Meta-regression identified that the socket sealing technique and publication year explained the observed heterogeneity. NMA showed that FA and OHB led to significantly lower ridge resorption than SH, resulting in 1.18 mm (95% PI 0.21-2.13) and 1.10 mm (95% PI 0.49-1.69) wide alveolar ridges, respectively. No significant difference between OHNB and SH was found (0.46 mm, 95% PI -0.70 to 1.64). The treatment with the largest probability for ARP was FA (52.7%), followed by OHB (39.1%) and OHNB (8.2%). CONCLUSIONS: FA and OHB are efficacious techniques to seal the alveolus during ARP.

Structural validity of the Brazilian version of the Sense of Coherence scale (SOC-13) in oral health research: exploratory and confirmatory factor analysis.

BACKGROUND: The Sense of Coherence (SOC) construct has been used worldwide in oral health research, but rigorous factor analyses of the scale are scarce. We aim to test the dimensional structure of the Brazilian short version of the SOC scale with 13 items. METHODS: This study is a secondary analysis of four independent cross-sectional Brazilian studies on oral health, using the 13-items SOC scale. Sample 1 was conducted on 1760 mothers and 1771 adolescents. Sample 2 comprised 1100 adults. Sample 3 had 720 adults and older individuals. Sample 4 comprised 664 adolescent students. Confirmatory Factor Analysis (CFA) was conducted on sample 1 to compare two models: 3-factor versus 1-factor. Because they were refuted, Exploratory Factor Analysis was implemented in samples 2 and 3. Modified models were tested in sample 4 using CFA. All analyses were conducted with MPlus version 7.11. RESULTS: CFA of sample 1 resulted in an unacceptable fit (RMSEA = 0.12;CFI = 0.78; TLI = 0.73; and WRMR = 3.28) for 1-factor model and 3-factor (RMSEA = 0.10; CFI = 0.87; TLI = 0.84; and WRMR = 2.50). The EFA on samples 2 and 3 showed, respectively, two eigenvalues greater than 1 (4.11 and 1.56) and (4.32 and 1.42), but the scale items soc1, soc2 and soc3 formed an uninterpretable second factor. Another CFA, using sample 4, showed acceptable model fit after removing those three items and also soc11 (RMSEA = 0.05; CFI = 0.98; TLI = 0.99; and WRMR = 0.71). CONCLUSION: The results indicate that the SOC-13 scale needs further adjustments. The one-factor model with nine items showed a good statistical fit, but the implications of excluding items should be further investigated, considering the scale's content validity, cross-cultural adaptation and theoretical background.

Oral diseases: a global public health challenge.

Oral diseases are among the most prevalent diseases globally and have serious health and economic burdens, greatly reducing quality of life for those affected. The most prevalent and consequential oral diseases globally are dental caries (tooth decay), periodontal disease, tooth loss, and cancers of the lips and oral cavity. In this first of two papers in a Series on oral health, we describe the scope of the global oral disease epidemic, its origins in terms of social and commercial determinants, and its costs in terms of population wellbeing and societal impact. Although oral diseases are largely preventable, they persist with high prevalence, reflecting widespread social and economic inequalities and inadequate funding for prevention and treatment, particularly in low-income and middle-income countries (LMICs). As with most non-communicable diseases (NCDs), oral conditions are chronic and strongly socially patterned. Children living in poverty, socially marginalised groups, and older people are the most affected by oral diseases, and have poor access to dental care. In many LMICs, oral diseases remain largely untreated because the treatment costs exceed available resources. The personal consequences of chronic untreated oral diseases are often severe and can include unremitting pain, sepsis, reduced quality of life, lost school days, disruption to family life, and decreased work productivity. The costs of treating oral diseases impose large economic burdens to families and health-care systems. Oral diseases are undoubtedly a global public health problem, with particular concern over their rising prevalence in many LMICs linked to wider social, economic, and commercial changes. By describing the extent and consequences of oral diseases, their social and commercial determinants, and their ongoing neglect in global health policy, we aim to highlight the urgent need to address oral diseases among other NCDs as a global health priority.

Ending the neglect of global oral health: time for radical action.

Oral diseases are a major global public health problem affecting over 3·5 billion people. However, dentistry has so far been unable to tackle this problem. A fundamentally different approach is now needed. In this second of two papers in a Series on oral health, we present a critique of dentistry, highlighting its key limitations and the urgent need for system reform. In high-income countries, the current treatment-dominated, increasingly high-technology, interventionist, and specialised approach is not tackling the underlying causes of disease and is not addressing inequalities in oral health. In low-income and middle-income countries (LMICs), the limitations of so-called westernised dentistry are at their most acute; dentistry is often unavailable, unaffordable, and inappropriate for the majority of these populations, but particularly the rural poor. Rather than being isolated and separated from the mainstream health-care system, dentistry needs to be more integrated, in particular with primary care services. The global drive for universal health coverage provides an ideal opportunity for this integration. Dental care systems should focus more on promoting and maintaining oral health and achieving greater oral health equity. Sugar, alcohol, and tobacco consumption, and their underlying social and commercial determinants, are common risk factors shared with a range of other non-communicable diseases (NCDs). Coherent and comprehensive regulation and legislation are needed to tackle these shared risk factors. In this Series paper, we focus on the need to reduce sugar consumption and describe how this can be achieved through the adoption of a range of upstream policies designed to combat the corporate strategies used by the global sugar industry to promote sugar consumption and profits. At present, the sugar industry is influencing dental research, oral health policy, and professional organisations through its well developed corporate strategies. The development of clearer and more transparent conflict of interest policies and procedures to limit and clarify the influence of the sugar industry on research, policy, and practice is needed. Combating the commercial determinants of oral diseases and other NCDs should be a major policy priority.

Motivational Interviewing in Preventing Early Childhood Caries in Primary Healthcare: A Community-based Randomized Cluster Trial.

OBJECTIVE: To assess the effectiveness of motivational interviewing in preventing early childhood caries compared with conventional oral health education. STUDY DESIGN: Twelve health care units in southern Brazil were randomly allocated in 2 groups of 6 and professionals in 1 group were trained in motivational interviewing. The mothers/children and external examiners were blinded to the intervention. The data were collected by calibrated examiners using questionnaires and a clinical examination based on modified International Caries Detection and Assessment System criteria. Of the 674 children born in the catchment area in the year 2013, 469 received the intervention (224 in the conventional oral health education group, 245 in the motivational interviewing group), and 320 were examined by the end of the study (145 in the conventional oral health education group, 175 in the motivational interviewing group), with mean age of 30 months. The final follow-up was 68%, after 3 years. RESULTS: Mean of decayed, missing, and filled surfaces at the end of the study period for the whole sample was 1.34 (95% CI 0.97-1.71). The caries rate per 100 surface-year in the conventional oral health education group was 1.74 (95% CI 1.14-2.34) and in the motivational interviewing group, it was 0.92 (95% CI 0.63-1.20). To correct for clustering effect and unbalanced factors, multilevel Poisson regression was fitted and the effect of motivational interviewing on the incidence rate ratio was 0.40 (95% CI 0.21-0.79). CONCLUSIONS: An intervention based on the principles of motivational interviewing style was more effective in reducing the number of surfaces affected by early childhood caries compared with conventional oral health education intervention. TRIAL REGISTRATION: ClinicalTrials.govNCT02578966, Brazilian Registry of Clinical Trials RBR-8fvwxq.

The effect of statins on periodontal treatment-a systematic review with meta-analyses and meta-regression.

OBJECTIVE: This study aimed to systematically review clinical trials about the effect of statins as adjunct to mechanical periodontal therapy, on probing pocket depth, clinical attachment level, and intrabony defects, in comparison to mechanical periodontal therapy alone or in association with placebo. MATERIAL AND METHODS: Three databases were searched for controlled clinical trials that used any locally delivered or systemically statin as a sole adjunctive therapy to mechanical periodontal treatment. Weighted mean differences between baseline and 6 months after periodontal treatment for clinical attachment level (CAL), probing pocket depth (PPD), and intrabony defect (IBD) were calculated. A high heterogeneity was detected. Therefore, a meta-regression adjusted for type of statin and year of publication was performed. RESULTS: Fifteen studies were included in the systematic review, and ten studies were included in the meta-analysis. In the meta-regression, the adjunct use of simvastatin, rosuvastatin, and atorvastatin additionally reduced PPD in comparison to mechanical periodontal therapy and a placebo gel (2.90 ± 0.35, 3.90 ± 0.77, 3.06 ± 0.71 mm, respectively; p < 0.05). Regarding the resolution of IBD, simvastatin and rosuvastatin significantly improved in comparison to control group (0.89 ± 0.35 and 1.93 ± 0.77 mm, respectively; p < 0.05). No statistically significant difference was found between the statins for both PPD and IBD (p < 0.05). Regarding CAL gain, simvastatin provided a statistically significant improvement as compared to the control group (2.02 ± 0.79 mm; p = 0.043). CONCLUSIONS: The use of statins, used as sole adjuncts to mechanical periodontal treatment, improved the periodontal parameters. In the quantitative analyses, simvastatin was the only drug that showed additional benefits in all evaluated parameters. CLINICAL RELEVANCE: Statins promote significantly clinical periodontal improvements when administered in association with non-surgical scaling and root planning (SRP), when compared to SRP alone or in association with a placebo.

Citation Analysis and Trends in review articles in dentistry.

OBJECTIVE: This study aimed to describe the trends in dentistry article reviews as well as to compare citation patterns between systematic and narrative reviews. METHODS: A search strategy was developed, in Scopus database, in order to identify all narrative and systematic reviews published between 2000 and 2015. Original research studies, letters to the editor, editorials, book chapters, and case reports were excluded. From the list of studies available, 30 reviews per year were randomly chosen. The review type, year of publication, number of authors, country of the first author, open access, language, main topic of interest, journal's H index, number of references, and number of citations were extracted by 2 researchers. The number of citations was extracted from the Scopus database. Multivariable regression analysis was used in order to detect the association between citation rate and the independent variables. RESULTS: Overall, 118 and 362 systematic and narrative reviews were included in this study. Throughout the years, the number of systematic reviews has increased from 5.8% to 53.3%. However, the mean number of citations has significantly decreased, and this is affected by the review's year of publication. A trend for lower citation in systematic reviews (Relative risk [RR]: 0.79; 95% confidence interval: 0.75-0.84) has been demonstrated; however, the number of citations of narrative reviews has been increasing over the years (RR: 1.14; 95% confidence interval: 1.08-1.21). CONCLUSION: From 2000 to 2015, the number of systematic reviews increased substantially. On the other hand, a trend for lower citations of these studies has been observed that is affected over time.

Effects of attention deficit hyperactivity disorder signs and socio-economic status on sleep bruxism and tooth wear among schoolchildren: structural equation modelling approach.

BACKGROUND: The prevalence of both bruxism and attention deficit hyperactivity (ADHD) has increased in recent years. AIM: This study evaluated the direct and indirect effects of signs of ADHD, reported by parents/caregivers and teachers, with sleep bruxism. In addition, this study explores the effects of socio-economic status (SES) on sleep bruxism. DESIGN: This cross-sectional study was performed in Diamantina, Brazil, with 851 randomly selected schoolchildren aged 6-12 years. The schoolchildren were underwent an oral examination for the evaluation of bruxism. Moreover, parents/caregivers fill out a form for the assessment of sleep bruxism and sociodemographic factors. Parents/caregivers and teachers responded to the Swanson, Nolan and Pelham scale - version IV (SNAP-IV) for the assessment of ADHD signs. The structural equation modelling approach was used, and standardized coefficients to direct, indirect and total effects were calculated. RESULTS: ADHD signs had a significant moderate (SC = -0.19, P < 0.01) effect on sleep bruxism. SES had a significant indirect effect on bruxism via sucking habits. Moreover, SES had a significant direct (SC = -0.16, P = 0.01) and total effect on tooth wear (SC = -0.17, P < 0.01). CONCLUSION: This study concluded that signs of ADHD and SES have a complex direct and indirect effects on sleep bruxism among schoolchildren.

Oral health-related quality of life changes in patients with severe Class III malocclusion treated with the 2-jaw surgery-first approach.

INTRODUCTION: In this nonrandomized prospective study, we compared the effects of the surgery-first approach with conventional 2-jaw orthognathic surgery on skeletal Class III patients' oral health-related quality of life (OHRQoL), quality of the orthodontic outcome, and average treatment duration. METHODS: The sample consisted of 16 patients with severe skeletal Class III malocclusion, who needed 2-jaw orthognathic surgery: 8 were treated with the surgery-first approach, and 8 were treated with the traditional orthodontic-surgical approach. OHRQoL was assessed by using the Orthognathic Quality of Life Questionnaire (OQLQ) and the Oral Health Impact Profile-short version (OHIP-14). Malocclusion severity and esthetic self-perception were assessed with the Index of Orthodontic Treatment Need. Dental health status was determined using the Decayed, Missing and Filled Teeth Index. Tests were repeated at 7 times: baseline, 1 month after appliance placement, and 3 months, 6 months, 1 year, and 2 years after the beginning of the treatment; and for both groups, there was an also evaluation stage after the orthognathic surgery. RESULTS: After 2 years, the surgery-first group showed a significant decrease in malocclusion severity (P <0.001) and had significant reductions in OQLQ (P <0.001) and OHIP-14 scores (P <0.001). These changes began after the orthognathic surgery and were progressive throughout the evaluation periods. In the traditional orthodontic-surgical approach group, after 2 years of monitoring, all patients were still in the preoperative orthodontic preparation phase, and their malocclusion severity increased significantly, thereby resulting in a not statistically significant worsening of their OHRQoL (OHIP-14, P = 0.89; OQLQ, P = 0.11). CONCLUSIONS: OHRQoL improved significantly in a linear trend of progressive improvements in all severe Class III patients who had the surgery-first approach after the surgical procedure through 2 years of follow-up, as their malocclusion and esthetic self-perception also improved.

Impact of orthosurgical treatment phases on oral health-related quality of life.

INTRODUCTION: In this cross-sectional study, we investigated the impact of the orthosurgical treatment phases on the oral health-related and condition-specific quality of life (QoL) of patients with dentofacial deformities. METHODS: Two hundred fifty-four orthognathic patients were allocated into 4 groups according to treatment phase: initial (not yet treated), presurgical orthodontics, postsurgical orthodontics, and retention. Data were collected using the Oral Health Impact Profile to evaluate the oral health-related QoL, the Orthognathic QoL Questionnaire to analyze the condition-specific QoL, and the Index of Orthodontic Treatment Need to assess malocclusion severity and esthetic impairment. Specific malocclusion characteristics were also documented. RESULTS: A negative binomial regression analysis showed that the initial group had a more negative oral health-related QoL than did the postsurgical, presurgical, and retention groups (relative risks, 1, 0.79, 0.74 and 0.25, respectively). The initial group had a more negative condition-specific QoL than did the presurgical, postsurgical, and retention groups (relative risks, 1, 0.77, 0.38 and 0.15, respectively) regardless of age, income, or education; women reported greater negative impacts than men. Certain occlusal traits were related to higher Orthognathic QoL Questionnaire scores (P <0.01). CONCLUSIONS: Patients who completed their orthosurgical treatment had a significantly better oral health-related QoL and a more positive esthetic self-perception than did those undergoing treatment and those who were untreated. Crowding, crossbite, open bite, concave profile, edge-to-edge overjet, or Class III malocclusion negatively affected oral health-related QoL.

Correlations between two different methods to score bleeding and the relationship with plaque in systemically healthy young adults.

AIM: To evaluate the correlation between bleeding on marginal probing (BOMP) and bleeding on pocket probing (BOPP), and the correlation of both bleeding indices with plaque. MATERIALS AND METHODS: This cross-sectional study screened 336 participants, from which 268 were eligible for examination and analysis. Bleeding and plaque indices were assessed by single examiners, at six sites per tooth. RESULTS: The mean percentage of sites per individual with bleeding on marginal probing, bleeding on pocket probing and dental plaque were 19.9%, 51.2% and 32.2% respectively. In the quadrants where the margin was probed before the pocket, a 4.6 percentage points higher bleeding tendency with BOPP was observed (p < 0.05). At a site level, the correlation coefficients of plaque and bleeding on marginal probing and bleeding on pocket probing were 0.19 and 0.20 respectively. Both bleeding indices were also shown to be correlated (r = 0.89, fixed effect model). CONCLUSION: The prevalence of bleeding upon probing is influenced by the scoring method that is used for the diagnosis. Probing the bottom of the pocket results in significantly more bleeding than running a probe along the margin.

Assessing mediators between discrimination, health behaviours and physical health outcomes: a representative cross-sectional study.

PURPOSE: Discrimination is a social determinant of health; however, the pathways linking discrimination to ill-health are under-researched. This study investigated the mediators through which discrimination affects health behaviours and physical health outcomes, as well as assessed whether sex moderated these mechanisms. METHODS: Data from a representative survey (n = 1023) of undergraduate students enrolled in a Brazilian university in 2012 were used. Structural equation models were applied to assess the following mediation mechanisms--(1) discrimination influences self-rated health and body mass index via anxiety/depression; (2) discrimination affects behaviours (alcohol consumption, problem drinking, smoking, fruit/vegetable consumption, and physical activity) through discomfort associated with discriminatory experiences. The potential of sex to act as an effect-modifying variable was also explored in each of the postulated pathways. RESULTS: The effect of discrimination on self-rated poor health was totally (100.0%) mediated by anxiety/depression, while body mass index was not correlated with discrimination. Self-reported discrimination was associated with some behaviours via discomfort. Particularly, discomfort partially mediated the positive association between discrimination, leisure time physical activity (43.3%), and fruit/vegetable consumption (52.2%). Sex modified the association between discrimination, discomfort and physical activity in that such mechanism (more discrimination → more discomfort → more physical activity) was statistically significant in the entire sample and among females, but not among males. CONCLUSIONS: This is one of the first studies to demonstrate that discrimination is associated with physical health outcomes and behaviours via distinct pathways. Future investigations should further explicate the mediational pathways between discrimination and key health outcomes.

Elementary Schoolteachers' Knowledge and Decision-making Regarding Dental Trauma.

PURPOSE: To evaluate elementary schoolteachers' knowledge and decision making regarding dental trauma in Porto Alegre, Brazil. MATERIALS AND METHODS: A questionnaire-based survey was conducted among elementary schoolteachers (n=442). Questions encompassed sociodemographic characteristics and decision making regarding dental trauma. Data on the appropriate answer regarding what to do with a traumatised or avulsed tooth were analysed with multiple logistic regressions, adjusting for age, gender, work experience and previous training. RESULTS: The study population consisted largely of women (90%), was 40 to 49 years old (44.3%) and had more than 15 years of work experience (56.6%). Women (OR=2.68/p=0.041), teachers under 30 years old (OR=4.95/p=0.041), those with more than 15 years of work experience (OR=8.95/p<0.001) or those who had already received previous dental trauma instructions (OR=1.95/ p=0.119) were more likely to choose the appropriate answer for an avulsion situation. Teachers under 30 years old (OR=2.88/ p=0.279), those with more than 15 years of work experience (OR=4.55/p=0.001) or those who had received previous training (OR=3.39/p=0.009) presented higher probabilites of choosing the appropriate answer for a crown fracture event. CONCLUSION: Greater work experience or previous instructions on how to approach dental trauma in the school environment were found to be major factors in schoolteachers' decision making regarding dental trauma.