Excess hospital costs incurred by individuals with child abuse and neglect history in South Australia: A birth-cohort study.

Child abuse and neglect is a serious public health issue across the globe, with documented impacts on health, but the impact on hospital costs, at the population level, is unknown. We aimed to estimate the additional public hospital costs for emergency department visits and admitted patient hospitalizations, for persons with reported child protection concerns, from birth to 31 years and modelled to age 65. Using linked hospital data from 2003 to 2017 for a population birth-cohort of all individuals born in South Australia from 1986 to 2017, we estimated costs of public hospital care. Mean cost and cost differences (adjusted and unadjusted) in 2018 Australian dollars (AU$) were calculated for persons with child protection contact vs none, per person and at the population level. Persons with child protection contact had higher annualized mean hospital costs than those with no contact, with cost differentials increasing with age. Unadjusted differential cost per person was AU$338 (95% CI AU$204-AU$473) from birth to 12 years; increasing to AU$2242 (AU$2074-AU$2411) at ages 25 to 31 years, equating to an additional AU$124 (US$100) million for public hospital services from birth to 31 years, an 18% cost penalty (33% from 13 to 31 years). Modelled to age 65 years, excess costs were estimated at AU$415 (US$337, adjusted: AU$365 and US$296) million, a 27% cost impost. There is a considerable hospital cost penalty associated with persons with reported child protection concerns, especially from adolescence into adulthood, highlighting an opportunity for cost savings by preventive investment in effective early-in-life interventions.

Relation between anxiety disorders in adolescent mothers and dental fear in children.

BACKGROUND: Maternal anxiety disorders can cause adverse consequences in child's health, cognitive development, and behavior. AIM: To investigate the association of maternal anxiety disorders with the occurrence of dental fear in children aged 24-36 months. DESIGN: This cross-sectional study is part of a cohort of adolescent mothers and their children (n = 527) in the city of Pelotas, RS, Brazil. Anxiety disorders in mothers were assessed using Mini International Neuropsychiatric Interview (DSM-IV), whereas the Dental Anxiety Question was used to assess children's dental fear. Clinical oral examinations were performed on the cohort. Poisson regression analysis was used to determine the association of maternal anxiety disorders with maternal perception of dental fear in children (p < .05). RESULTS: The prevalence of dental fear in children was 21.7% (n = 114), and maternal age, agoraphobia, social phobia, and maternal caries experience (p < .05) were associated with the presence of dental fear. After adjusted analysis, children of mothers presenting with agoraphobia (Prevalence ratios [PR] = 1.52; 95% confidence interval [CI] = 1.00-2.32) and social phobia (PR = 1.69; 95% CI = 1.06-2.71) had higher prevalence of dental fear than children whose mothers did not have any of these conditions. CONCLUSIONS: In this population of young mothers, agoraphobia and social phobia were associated with children's dental fear. Detection of and treatment for maternal mental disorders may aid in the prevention of dental fear and its oral health-related consequences.

Temporomandibular dysfunction experience is associated with oral health-related quality of life: an Australian national study.

BACKGROUND: There are very few studies of the association between temporomandibular dysfunction (TMD) and oral health-related quality of life (OHRQoL) in a representative sample from the Asia-Pacific region. Accordingly, we aimed to quantify the association of TMD with OHRQoL dimensions and overall measurement scores in a representative sample of Australian adults while accounting for a range of confounders, and statistically estimating whether TMD experience is meaningfully associated with OHRQoL. METHOD: Australia's National Survey of Adult Oral Health 2004-2006 data were used. The outcome variables were the Oral Health Impact Profile (OHIP-14) domains and overall scores while the main exposure was self-reported Diagnostic Criteria Question for TMD. The analysis accounted for confounders including oral health status obtained from the oral examination, demographics, socioeconomics, health behaviours and health including perceived stress subscales of the PSS-14. We conducted complex samples analysis while using Cohen's f2 effect size to estimate whether the association is meaningful. RESULTS: TMD prevalence was 9.9% (95% CI: 8.4-11.6%) among 4133 Australian adults. TMD experience was associated with impairments to the seven OHIP-14 OHRQoL domains (P < .05) with higher impairments observed in physical pain (B = 0.82, 95% CI: .45-1.20, P < .001), psychological discomfort (B = 0.68, 95% CI: .29-1.06, P = .001) and psychological disability (B = 0.52, 95% CI: .20-.84, P = .001) in adjusted multivariate analyses. The difference in the mean OHIP-14 scores for those reporting TMD (Mean = 13.1, 95% CI: 12.0-14.0) and those who did not (Mean = 6.6, 95% CI: 6.0-6.8) was significant (t = 7.51, P < .001). In an adjusted multivariable model for OHIP-14 scores, TMD experience was associated with higher OHIP-14 scores (B = 3.34, 95% CI: 1.94-4.75, P < .001) where the Cohen's f2 was .022. Further, perceived stress subscales: perceived distress and perceived control were associated with TMD experience and OHIP-14 scores (P < .05). CONCLUSION: Lower OHRQoL was observed in Australian adults who reported TMD experience but with small clinical importance which might support considering TMD in regular dental care. The higher impairments observed in physical pain, psychological discomfort and psychological disability domains of OHRQL can help clinicians and researchers focus their attention on these domains. The confounding effect exhibited by the perceived stress subscale might support their inclusion in future TMD and OHRQoL research.

Perceptions of the dental profession: a comparative analysis through scale development.

Dentistry is a science-based profession that has a close interaction with people and society. However, despite this close interaction, perceptions of the dental profession by both patients and dental professionals have received little research attention. The purpose of this study was to compare the perceptions of dentists, dental students, and patients toward the dental profession through the development and testing of the Dental Profession Perceptions Scale (DPPS). The DPPS contains a total of 17 items measured on a 5-point Likert response scale. The DPPS showed excellent internal reliability (Cronbach's α = 0.92) and test-retest reliability (r = 0.93). Explanatory and confirmatory factor analyses of the DPPS showed that dentists', dental students', and patients' perceptions of the dental profession could be grouped according to 'status', 'human', and 'scientific' factors. There were no statistically significant differences between participants' DPPS total or sub-scale scores according to dental group, gender, or income. The DPPS developed can be used in future studies as a psychometrically sound measuring tool. Further studies should examine the factors that may affect the perceptions of the dental profession in different societies and cultures.

Translation and validation of the Finnish version of index of dental anxiety and fear (IDAF-4C+) among dental students.

BACKGROUND: Dental fear accounts for 41% of the non-habitual dental attendance such as visiting only when in pain among adult Finns. Dentists should be able to recognize patients in risk for irregular attendance due to dental fear and measure their fear with valid and reliable instrument that capture the multidimensionality of dental fear. The study's aim was to translate the Index of Dental Anxiety and Fear (IDAF-4C+) into Finnish and test its reliability and validity. METHODS: The study population consisted of dental students in a Finnish university (n = 202). The IDAF-4C+ was back-and forward translated by experts as well as a native English translator, blinded to the original version. Reliability was assessed using Cronbach's alpha. Validity of the IDAF-4C+ was assessed against the Modified Dental Anxiety Scale (MDAS) using Spearman correlation coefficients and through the use of Exploratory factor analysis (EFA) and between genders using Mann-Whitney U tests. RESULTS: The reliability of the IDAF-4C+ was good, the Cronbach's alpha being 0.88. The IDAF-4C+ and MDAS and their subscales were correlated, with coefficients varying between 0.34 and 0.85. Correlations were stronger with the emotional and physiological components of the IDAF-4C+. EFA revealed one factor explaining 51.7% of the common variance (eigenvalue = 4.6). Women tended to have slightly higher mean scores than men (1.49 vs. 1.36, p = 0.247). CONCLUSIONS: The translation and localization of the Finnish version of the IDAF-4C+ can be considered as providing some evidence of the validity and reliability of the scale. It adds to previously used measures as it considers also the behavioral, cognitive and physiological dimension involved in dental fear.

Translation and psychometric properties of the Swedish version of the Index of Dental Anxiety and Fear (IDAF-4C⁺).

Dental anxiety (DA) is a common condition, with significant medical, psychological, and social consequences. High-quality psychometric tools for the assessment of dental anxiety are necessary for clinical and research purposes. The aim of this study was to adapt the Index of Dental Anxiety and Fear (IDAF-4C(+) ) to the Swedish language and to explore the psychometric properties of the translated version. The study included a clinical sample (n = 414; 17-91 yr of age) and a non-clinical sample (n = 51; 19-47 yr of age). The scales used were the IDAF-4C(+) , the Single-Question Assessment of Dental Anxiety (SQDA), the Dental Fear Survey (DFS), and the Internal Health Locus of Control (IHLOC). The Swedish IDAF anxiety module showed a clear, one-dimensional structure, good internal consistency (Cronbach's alpha = 0.95), and adequate validity, as evidenced by strong correlations with the other DA measures (SQDA and DFS) and weak correlations with the IHLOC. In addition, the IDAF phobia module and the IDAF stimulus module were strongly correlated with the other DA measures. To conclude, the study shows promising findings for the reliability and validity of the Swedish translation of the IDAF-4C(+) , as a useful measure of dental anxiety in research and clinical practice.

Dental fear and expected effectiveness of destructive coping as predictors of children's uncooperative intentions in dental settings.

AIM: To explore the mechanisms by which some children select disruptive behaviours to cope with stressful dental events. In particular, the relationships between dental fear, expected effectiveness of destructive coping, and intentions of displaying uncooperative behaviours were analysed. DESIGN: Participants were 170 children who filled out a questionnaire survey. Descriptive statistics by gender and group age as well as comparisons of means were calculated. Spearman's rho correlation coefficients and binary logistic regression analysis were used to test hypotheses of the relationships among variables. RESULTS: Both dental fear and the expected effectiveness of destructive coping strategies were significantly associated with children's uncooperative intentions at the dentist. In addition, children who strongly endorsed the effectiveness of destructive coping strategies had a higher probability of uncooperative intentions as dental fear increased. In contrast, this relationship was not statistically significant among children who did not expect negative behaviours to be effective. CONCLUSIONS: Children's expectations about the effectiveness of destructive coping behaviours can help explain variations in the use of these strategies in stressful dental situations. Dental fear as well as children's inadequate expectancies about coping alternatives should be explored and targeted to prevent and modify uncooperative behaviour intentions at the dentist.

Water fluoridation and the association of sugar-sweetened beverage consumption and dental caries in Australian children.

OBJECTIVES: We examined demographic and socioeconomic differences in the consumption of sugar-sweetened beverages (SSBs), its association with dental caries in children, and whether exposure to water fluoridation modifies this association. METHODS: In a cross-sectional study, we used a stratified, clustered sampling design to obtain information on 16 508 children aged 5 to 16 years enrolled in Australian school dental services in 2002 to 2005. Dental staff assessed dental caries, and parents completed a questionnaire about their child's residential history, sources of drinking water, toothbrushing frequency, socioeconomic status (SES), and SSB consumption. RESULTS: Children who brushed their teeth less often and were older, male, of low SES, from rural or remote areas consumed significantly more SSBs. Caries was significantly associated with greater SSB consumption after controlling for potential confounders. Finally, greater exposure to fluoridated water significantly reduced the association between children's SSB consumption and dental caries. CONCLUSIONS: Consumption of SSBs should be considered a major risk factor for dental caries. However, increased exposure to fluoridated public water helped ameliorate the association between SSB consumption and dental decay. These results reconfirm the benefits of community water fluoridation for oral health.

Predicting dental avoidance among dentally fearful Australian adults.

Dental fear is related to poorer oral health outcomes, and this might be explained by the less frequent dental visiting of many fearful people. The objectives of this study were to investigate differences between dentally fearful people who regularly attend the dentist and fearful people who infrequently visit the dentist. A random sample of 1,082 Australians ≥ 15 yr of age completed a mailed questionnaire (response rate = 71.6%), and 191 dentate, high-fear adults (≥ 18 yr of age) were selected for further analysis. Dental avoidance was recorded if a person was currently avoiding or delaying dental care and if he/she had not been to a dentist in the previous 2 yr. Among the selected dentally fearful adults, dental avoidance was predicted by smoking status, toothbrushing frequency, coping strategy use, perceptions of dental visits as uncontrollable and unpredictable, and by anxiety relating to numbness, not knowing what the dentist is going to do, and cost. In a multivariate logistic regression model, smoking, toothbrushing, coping, and anxiety about numbness and cost remained as statistically significant predictors, with the model accounting for 30% of the variance. While several variables were associated with dental avoidance among fearful adults, the nature and causal directions of these associations remain to be established.

Applying the Cognitive Vulnerability Model to the analysis of cognitive and family influences on children's dental fear.

Negative experiences, cognitions, and family variables are involved in the etiology of child dental fear, but previous research has frequently considered them separately. This study uses the Cognitive Vulnerability Model to explore the influence of negative dental experiences and family members on children's dental anxiety. The participants were 185 children who completed a questionnaire comprising measures of dental fear and cognitive vulnerability-related perceptions. Measures were obtained for 88 of the participants' fathers and for 97 of the participants' mothers. Cognitive vulnerability perceptions had the strongest association with children's dental fear (ß = 0.40), explaining 14-21% of the variance in dental fear scores beyond that explained by other variables. Furthermore, vulnerability perceptions mediated the relationship between negative dental experiences and dental fear. Children's dental fear and cognitive vulnerability perceptions were significantly associated with those of their fathers (r = 0.23 and r = 0.40, respectively) and mothers (r = 0.28 and r = 0.35, respectively). Moreover, fathers' (ß = 0.24) and mothers' (ß = 0.31) levels of cognitive vulnerability significantly predicted the children's levels of dental fear. The Cognitive Vulnerability Model offers a framework to understand child dental fear. Furthermore, this cognitive approach may help explain why some children develop dental fear problems after suffering a negative dental experience and how dental anxiety is passed on from parents to children.

Socioeconomic and psychosocial correlates of oral health.

BACKGROUND: It has been proposed that psychosocial variables are important determinants of oral health outcomes. In addition, the effect of socioeconomic factors in oral health has been argued to work through the shaping of psychosocial stressors and resources. This study therefore aimed to examine the role of psychosocial factors in oral health after controlling for selected socioeconomic and behavioural factors. METHODS: Logistic and generalised linear regression analyses were conducted on self-rated oral health, untreated decayed teeth and number of decayed, missing and filled teeth (DMFT) from dentate participants in a national survey of adult oral health (n = 5364) conducted in 2004-2006 in Australia. RESULTS: After controlling for all other variables, more frequent dental visiting and toothbrushing were associated with poorer self-rated oral health, more untreated decay and higher DMFT. Pervasive socioeconomic inequalities were demonstrated, with higher income, having a tertiary degree, higher self-perceived social standing and not being employed all significantly associated with oral health after controlling for the other variables. The only psychosocial variables related to self-rated oral health were the stressors perceived stress and perceived constraints. Psychosocial resources were not statistically associated with self-rated oral health and no psychosocial variables were significantly associated with either untreated decayed teeth or DMFT after controlling for the other variables. CONCLUSION: Although the role of behavioural and socioeconomic variables as determinants of oral health was supported, the role of psychosocial variables in oral health outcomes received mixed support.

Treatment experience, frequency of dental visits, and children's dental fear: a cognitive approach.

Cognitive elements play a key role in dental anxiety. Nevertheless, relatively little is known about how dental treatments and frequency of visits to the dentist are related to dental fear and its cognitive antecedents. This study aimed to explore the relationships between dental visits, past treatment experiences, expectations on the aversiveness/probability of negative dental events, and dental fear in children. The participants were 147 children (60% female; mean age = 12.0 yr) who completed a questionnaire comprising measures of dental treatment-related experience (attendance, fillings, and extractions), perceived aversiveness and probability of dental events, and dental anxiety. Bivariate correlations and multiple linear regression analyses were used to analyze the data. A higher frequency of dental visits was associated with less dental fear and a decreased belief in the probability of negative events occurring during treatment. The type of treatments received was not directly linked to dental fear. However, having received fillings was significantly associated with the perceived probability of negative dental events, whereas extractions were positively associated with these expectations but negatively associated with the perceived aversiveness of possible dental events. Regular dental visits, as well as dental treatments, can influence, in different ways, cognitive elements associated with dental anxiety in children.

Assessing the relative efficacy of cognitive and non-cognitive factors as predictors of dental anxiety.

Although previous research has successfully tested the usefulness of cognitive and non-cognitive factors to predict dental anxiety, they have rarely been jointly analysed. This study therefore aimed to compare the relative predictive power of a set of cognitive and non-cognitive factors in accounting for dental anxiety scores. A sample of 167 Spanish undergraduate students (81.4% women; mean age 21.2 yr) completed a questionnaire comprising measures of dental anxiety, non-cognitive antecedents of dental anxiety (i.e. past aversive dental experiences, exposure to dentally fearful relatives, and trait-based negative mood), and cognitive variables (i.e. dental-related cognitive vulnerability, probability/aversiveness expectancies, and dental cognitions and beliefs). In multiple linear regression analyses, cognitions were found to significantly increase the proportion of variance accounted for in dental fear scores (ΔR(2) = 0.15, maximum ΔR(2) = 0.35). Cognitive factors were found to be the best individual predictors of dental fear (ß-values ranging from 0.23-0.66). Furthermore, scores for past aversive treatment experiences and negative mood were not significant predictors of scores for dental anxiety when cognitive variables were included in the models. The analysis of cognitive mechanisms involved in dental anxiety is revealed as a potentially important point in better understanding this problem.

Adaptation and psychometric properties of the Spanish version of the Index of Dental Anxiety and Fear (IDAF-4C+).

PURPOSE: The Index of Dental Anxiety and Fear (IDAF-4C+) constitutes a theory-grounded, reliable and valid instrument, which, due to its modular structure, allows different uses such as assessing dental anxiety levels, establishing preliminary dental phobia diagnoses and identifying feared stimuli. This study aimed to develop a Spanish version of the original IDAF-4C+ and evaluate its psychometric properties. MATERIALS AND METHODS: A sample of 231 Spanish undergraduate students (70.6% female; mean age 21.4 years) completed a questionnaire comprising the Spanish version of the IDAF-4C+ and other measures related to dental anxiety. The structure, reliability and validity of the adapted IDAF-4C+ were analysed. RESULTS: The adapted IDAF-4C fear module yielded a single-factor structure and demonstrated good internal consistency (Cronbach's alpha) and test-retest reliability. It shared a greater amount of variance with phobia diagnoses than the Modified Dental Anxiety Scale (MDAS) and a single-item measure of dental fear (SIDF). Moreover, the IDAF-4C was moderately to highly correlated with the MDAS and the SIDF measure, as well as with variables connected with dental anxiety such as negative dental thoughts, having had a negative dental experience and negative affect. The frequency of dental visits was also linked to IDAF-4C scores, and IDAF-stimulus items involving cognitive vulnerability, interpersonal and cost concerns were associated with dental attendance. CONCLUSION: The Spanish version of IDAF-4C+ presents similar psychometric properties to the original version which, considering the advantages of this instrument, qualifies the adapted one for its use in different research and applied contexts.

Child maltreatment and emergency department visits: a longitudinal birth cohort study from infancy to early adulthood.

BACKGROUND: Child maltreatment (CM) is a serious global public health issue, with documented impacts on health. OBJECTIVE: To examine the association between different levels of CM concern, and Emergency Department (ED) visits from infancy to early adulthood. PARTICIPANTS AND SETTING: Individuals born in Adelaide, South Australia from January 1986 to June 2017 (N = 443,754). METHODS: Using linked administrative data, we examined frequency and adjusted rate ratios for all-cause and cause specific ED visits among individuals with varying levels of CM concern. RESULTS: Cumulative mean ED visits to age 14.5 years were higher for individuals with any CM concern, ranging from 10.2 to 14.8, compared with 6.4 in persons with no recorded CM concern. Adjusted rate ratios for ED visits varied from 1.26 (95% CI: 1.23-1.30) to 1.54 (1.48-1.60) in children (birth to 12 years), 1.98 (CI: 1.92-2.04) to 4.34 (CI: 4.09-4.60) in adolescence and 2.22 (CI: 2.14-3.48) to 3.48 (3.27-3.72) in young adults, increasing with severity of maltreatment concerns. ED visits coded as self-harm or poisoning, injuries, substance use or mental illness were particularly high, with incidence rate ratios mostly 3 to 15 times for mental health/substance related visits and 1.5 to 3.2 for other accidents or injury for individuals with any CM concern versus none. CONCLUSIONS: The high rate ratios for ED visits in children with CM concern, especially for self-harm, substance use and mental health during adolescence and adulthood highlights the enduring mental health needs of victims of child maltreatment, providing further impetus for prevention.

Exploring the associations between somatization and dental fear and dental visiting.

While somatization has been investigated as an important variable in relation to excessive health-service utilization, its role in relation to dental visiting and dental fear has received limited attention. It was hypothesized that an excessive focus on physical symptoms might lead somatizers to experience dental treatment as more traumatic, resulting in greater dental fear. The aims of this study were to determine whether somatization was associated with dental fear, reduced dental visiting, and symptomatic visiting. Questionnaire data were collected from 5,806 dentate Finnish adults, with somatization measured using 12 items from the Symptom Check List (SCL-90). Dental fear was measured using a single-item question and dental visiting was assessed by questions relating to time since last dental visit and the usual reason for dental visiting. Multinomial logistic regression analyses indicated that somatization has a statistically significant positive association with both dental fear and symptomatic dental visiting after controlling for age, gender, and education. However, the association between dental-visiting frequency and somatization was not statistically significant. The results were consistent with the hypothesized role of somatization in the development of dental fear. Further investigation of how somatization is related to dental fear and dental-service utilization appears warranted.

A clinician guide to patients afraid of dental injections and numbness.

Fears of dental injections remain a clinical problem often requiring cognitive behavioural psychology counselling and sedation in order to carry out needed dental treatment. This study, based on a national survey in Australia, compared patient concerns about numbness caused by local anaesthesia and fears of the injection itself. It also examined associations between dental fearfulness and avoidance associated with patient self-reported negative experiences and treatment need. Clinical advice on how to approach such patients is offered. Relatively high levels of dental anxiety and fear have been reported in several industrialised Western societies (McGrath & Bedi, 2004; Armfield, Spencer & Stewart, 2006; Lahti et al., 2007; Enkling, Marwinski Jöhren, 2006). In the U.K., almost one in three adults consider themselves to always be anxious about going to the dentist (Nuttall et al., 2001). Of concern is that this dental fear may be passed on to the children of anxious adults (Nuttall, Gilbert & Morris, 2008), leading to an inter-generational perpetuation of the problem. There is considerable evidence that dental fear is related to poorer oral health, reduced dental attendance and increased treatment stress for the attending dentist. There are many aspects of going to a dentist that might elicit feelings of apprehension, concern or anxiety in prospective patients (Liddell & Gosse, 1998; Oosterink, de Jongh & Aartman, 2008). One of the most commonly reported concerns relates to receiving injections. Indeed, fear of needles and the treatment of injection fear has been an important focus of a research in the U.K. (Boyle, Newton & Milgrom, 2010). Needle fear, in particular, is a major issue given that the delivery of local anaesthesia via injection is the central plank of pain relief techniques in dentistry (Malamed, 2009) and dentists as well as patients often avoid difficult injections as a consequence, resulting in poor pain control. A less well described anxiety of receiving dental treatment is fear of numbness associated with the dental injection (Morse & Cohen, 1983). Certainly, many dentists believe that their patients avoid local anaesthesia because of a wish to avoid the disturbing effects of numbness (Moore et al., 1998). Milgrom et al. (1997) found that fears about the numbness associated with receiving local anaesthesia significantly differentiated avoiders and non-avoiders of dental treatment. However, these concerns appeared to be much less common than those concerning the perceived pain of injections and fear of bodily injury resulting from the injection (Milgrom et al., 1997; Kaako et al., 1998). Consistent with these findings, whereas 43% of English patients asked to imagine undergoing future third molar surgery expressed concerns primarily about pain, only 6% of patients indicated concern about numbness as their worst fear (Earl, 1994). More recently, a study of Dutch people found that the feeling of numbness from the anaesthesia was rated as the 41st most feared dental stimulus out of a list of 67 possible stimuli, and that only 1.5% of the general population regarded numbness as extremely anxiety provoking (Oosterink, de Jongh & Aartman, 2008). However, it is important for a clinician to differentiate between those who dislike the sensation of temporary numbness versus those who may worry that it may never wear off. Such problem thinking can be an issue irrespective of whether a patient overcomes the fear of needles with sedation or not. A large number of patients dislike the sensation of numbness enough for manufacturers to respond with a partial antidote in alpha adrenergic receptor antagonist phentolamine mesylate (OraVerse Sanofi-Aventis, Hersh & Lindemeyer, 2010). Approval of this agent, which shortens the length of soft tissue anaesthesia after inferior alveolar block, is pending in the UK and other European countries. In other cases, dentists resort to using local anaesthetics without vasoconstrictors to shorten the period of anaesthesia (Fiset, Getz, Milgrom & Weinstein, 1989). While the association between dental fear and fear of injections has received considerable attention, the relationship between dental fear and numbness has received less attention. In particular, the nature of the associations between dental fear and avoidance and anxiety over numbness has not been studied. There has also been no research into whether or not concerns over numbness are independent of injection concerns. Finally, the association between fear of numbness and injections and dental avoidance and treatment needs has not been investigated. This study, based on survey work in Australia, aimed to compare patient concerns about numbness caused by receiving anaesthesia to that of anxiety over the receipt of needles and injections. Associations with dental fear and avoidance as well as negative experiences and treatment needs were also explored.

Educational strengths and functional resilience at the start of primary school following child maltreatment.

BACKGROUND AND OBJECTIVE: This study explored the associations between child maltreatment and functional resilience at school commencement, and investigated factors related to resilience separately for boys and girls. PARTICIPANTS AND SETTING: Children were part of a birth cohort of all children born in South Australia between 1986 and 2017 who had completed the Early Australian Development Census (AEDC) at about age 5-6 years when starting primary school (N = 65,083). METHODS: Multivariable logistic regression analysis was conducted with a subsample of 3414 high-risk children who had a maltreatment substantiation or investigation, with resilience defined as having well or highly developed strengths on the Multiple Strength Indicator of the AEDC. RESULTS: CPS involvement was strongly associated with poorer functioning at school commencement. Among high-risk children, 51.2% demonstrated resilience. Predictors of resilience in the multivariable model were being older, not having an emotional condition, and being read to at home. Risk factors were being male, living in rural or remote areas, having a physical or sensory disability, or having a learning disability. Boys who had been maltreated demonstrated few strengths and had less resilience than girls. Boys and girls who were read to regularly at home had more than three times the odds of showing resilience than children who were not read to at home. CONCLUSIONS: The early learning environment provides an ideal opportunity to identify and intervene to help those children who are struggling with school adjustment following familial maltreatment. Boys are likely to need additional help.

Estimated prevalence of dental fear in adults: A systematic review and meta-analysis.

OBJECTIVES: To systematically review the literature about: 'What is the global estimated prevalence of dental fear in adults?'. DATA/SOURCES: Inclusion criteria were observational population-based studies reporting the prevalence or raw data of dental fear in adults (>18 years). Five electronic databases (Embase, PubMed, Scopus, Virtual Health Library and Web of Science) were searched without language restrictions up to March 2020. Two researchers independently performed the study selection, data extraction and quality assessment of the included studies. Risk of bias was performed using the Joanna Briggs Critical Appraisal Checklist for Prevalence and Incidence studies. The prevalence pooled estimates of dental fear were calculated using fixed- and random-effect models. Subgroup analyses were performed. STUDY SELECTION: The search strategy identified 4,486 studies. After removal of duplicates (1,722), title and abstract screening (2,764) and full-text reading (108), 31 publications were deemed eligible for this systematic review. Three studies presented low risk of bias and 28 studies presented high risk of bias. A total of 72,577 individuals 18 years of age or older composed the sample of this systematic review. The global estimated prevalence of dental fear and anxiety (DFA), high DFA and severe DFA in adults were 15.3 % (95 %CI 10.2-21.2), 12.4 % (95 %CI 9.5-15.6) and 3.3 % (95 %CI 0.9-7.1), respectively. Subgroup analyses showed a higher prevalence of DFA, high DFA and severe DFA among women and younger adults. The instruments used to measure dental fear also affected its prevalence. CONCLUSIONS: Dental fear and high dental fear are prevalent in adults worldwide, being more prevalent among women. CLINICAL SIGNIFICANCE: Evidence suggests fear negatively impacts dental care pattern, clinical and subjective oral health conditions. A better knowledge of the global prevalence and the factors associated with this problem will allow that prevention or even behavior modulation strategies of the fearful individual's in dental setting being carried out.

Intergenerational transmission of child maltreatment in South Australia, 1986-2017: a retrospective cohort study.

BACKGROUND: The extent of intergenerational transmission of child maltreatment is unclear due to methodological limitations in previous studies. In this study, we aimed to examine factors associated with intergenerational transmission of child maltreatment and quantify its extent in a population sample over a 30-year period in South Australia. METHODS: In this retrospective cohort study, we used linked administrative data from the South Australian Birth Registry to identify dyads of mothers and their children both born in South Australia between July 1, 1986, and June 30, 2017. Three child protection system (CPS) outcomes (any CPS involvement, substantiated maltreatment, and time spent in out-of-home care) were computed from data obtained from the South Australian Department for Child Protection. Multivariable Cox regression models were used to estimate hazard ratios (HRs) for child CPS outcomes according to their mother's CPS exposure. FINDINGS: 38 556 unique mother-child dyads were included. 458 (2·0%) of 23 437 children whose mothers had no CPS involvement in childhood had a substantiated report of maltreatment and 127 (0·5%) spent time in out-of-home care. By comparison, 970 (22·1%) of 4382 children whose mothers experienced substantiated maltreatment in childhood had substantiated maltreatment and 469 (10·7%) spent time in out-of-home care. After adjusting for potential confounders, children of mothers with any CPS involvement in childhood had an increased risk of CPS contact compared with children whose mothers had no CPS involvement; this risk was greatest for children of mothers who had both substantiated maltreatment and spent time in out-of-home care (HR 6·25 [95% CI 5·59-6·98] for any CPS involvement, 13·69 [10·08-16·92] for substantiated maltreatment, and 25·78 [18·23-36·45] for any time in out-of-home care). Risks of child CPS outcomes were substantially increased for children of mothers who had a first CPS notification under the age of 1 year or who had any CPS notification at age 13-17 years. INTERPRETATION: Children are at high risk of maltreatment if their mother experienced maltreatment as a child. Assisting survivors of childhood maltreatment, particularly female survivors, provides a crucial intervention opportunity to help prevent further child abuse and neglect. FUNDING: Australian National Health and Medical Research Council; Channel 7 Children's Research Foundation.