Gerald Michael Humphris

Obesity and dental caries in children:A systematic review and meta-analysis

OBJECTIVESnObesity and dental caries have become increasingly prevalent challenges to public health. Research results into the relationship between obesity and dental caries in children have been mixed and inconclusive. The aim of this review and meta-analysis was to provide evidence to quantify the relationship between obesity and dental caries in children using a systematic approach.nnnMETHODSnA systematic search for papers between 1980 and 2010 addressing childhood obesity and dental caries was conducted and a random effects model meta-analysis applied.nnnRESULTSnFourteen papers met the selection criteria. Overall, a significant relationship between childhood obesity and dental caries (effect size = 0.104, P = 0.049) was found. When analysed by dentition type (primary versus permanent), there was a nonsignificant association of obesity and dental caries in permanent and primary dentitions, yet on accounting only for standardized definitions for assessment of child obesity using body mass index, a strong significant relationship was evident in children with permanent dentitions. Moderating for study country of origin (newly industrialized versus industrialized) showed a significant relationship between obesity and dental caries in children from industrialized but not newly industrialized countries. Cofactors such as age and socioeconomic class were significant moderators.nnnCONCLUSIONSnFuture analysis should investigate these confounding variables, helping shape the future of obesity management programmes and oral health interventions, through determining common risk factors.

The modified dental anxiety scale: UK general public population norms in 2008 with further psychometrics and effects of age

BackgroundThe Modified Dental Anxiety Scale (MDAS) is a brief, self-complete questionnaire consisting of five questions and summed together to produce a total score ranging from 5 to 25. It has reasonable psychometric properties, low instrumental effects and can be integrated into everyday dental practice as a clinical aid and screen for dental anxiety. The objectives were to (i) produce confirmatory evidence of reliability and validity for the MDAS, (ii) provide up-to-date UK representative norms for the general public to enable clinicians to compare their patients scores, (iii) to determine the nature of the relationship between dental anxiety and age.MethodsTelephone survey of a representative quota sample of 1000 UK adults (>18 years of age) conducted between 7–21 April, 2008.ResultsAttrition of potential participants was high in the recruitment process, although bias was minimal. Estimated proportion of participants with high dental anxiety (cut-off score = 19) was 11.6%. Dental anxiety was four times greater in the youngest age group (18–39 yrs) compared to older participants (60+ yrs), controlling for sex, social class and self-reported dental visiting behaviour confirming previous developed-world reports.ConclusionThe scales psychometrics is supportive for the routine assessment of patient dental anxiety to compare against a number of major demographic groups categorised by age and sex. Dental anxiety was high in younger compared to older people.

From normal response to clinical problem : definition and clinical features of fear of cancer recurrence

PurposeResearch to date on fear of cancer recurrence (FCR) shows that moderate to high FCR affects 22–87xa0% of cancer survivors and is associated with higher psychological morbidity (Simard et al J Cancer Surviv 7:300–322, 2013). Despite growing research interest in FCR, the lack of consensus on its definition and characteristics when it reaches a clinical level has impeded knowledge transfer into patient services.MethodsIn order to address these gaps, expert researchers, policy makers, trainees, and patient advocates attended a 2-day colloquium at the University of Ottawa in August 2015. A Delphi method was used to identify the most relevant definition of FCR, and the attendees generated possible diagnostic characteristics of clinical FCR.ResultsAfter three rounds of discussion and voting, the attendees reached consensus on a new definition of FCR: “Fear, worry, or concern relating to the possibility that cancer will come back or progress.” Regarding clinical FCR, five possible characteristics were proposed: (1) high levels of preoccupation, worry, rumination, or intrusive thoughts; (2) maladaptive coping; (3) functional impairments; (4) excessive distress; and (5) difficulties making plans for the future.ConclusionsThe new proposed definition of FCR reflects the broad spectrum in which patients experience FCR. A consensual definition of FCR and the identification of the essential characteristics of clinical FCR are necessary to accurately and consistently measure FCR severity and to develop effective interventions to treat FCR. We hope this broad definition can encourage further research and the development of inclusive policies for all cancer patients and survivors who are struggling with this issue.

The prevalence of dental anxiety across previous distressing experiences

AIMSnTo compare the prevalence of high dental anxiety across a variety of past distressing experiences with a previously reported Dutch sample.nnnMETHODnUniversity students from the UK (N=1024) completed an online survey containing; the Modified Dental Anxiety Scale, and the Level of Exposure-Dental Experiences Questionnaire (LOE-DEQ). Adjusted odds ratios (OR) were calculated to assess the association of self-reported distressing experiences and dental anxiety.nnnRESULTSnThe percentage of respondents with high dental anxiety (HDA) (total MDAS score≥19) was 11.2%. Significant prevalence of HDA across several distressing experiences was shown in both UK and Dutch samples notably: extreme helplessness during dental treatment, lack of understanding of the dentist and extreme embarrassment during dental treatment. There were little or no effects of non-dental trauma, with the exception of sexual abuse in the UK sample.nnnCONCLUSIONSnTrauma from various past experiences may be implicated in an increased risk of high dental anxiety.

Fear of recurrence following head and neck cancer in the outpatient clinic

Fear of recurrence (FOR) following head and neck cancer is one of the most frequent concerns of patients and is associated with psychological distress. The aims of this study were, first, to report the clinical characteristics of patients selected for FOR concerns on a patient concerns inventory (PCI) and, second, to compare the degree of FOR using a FOR questionnaire of those patients expressing FOR concerns on the PCI with those who did not. Two cohorts were used. The first comprised consecutive oncology patients attending clinics from August 2007 for 9xa0months (Nxa0=xa0123). These patients completed the PCI only. The second comprised patients attending the same clinic for over 4xa0months from October 2008 (Nxa0=xa068), and this group completed both the PCI and the FOR questionnaire. FOR was the most frequently selected issue on the PCI (42%). There were no obvious differences in selecting FOR by patient characteristics. Those who scored ‘a lot’ or ‘all the time’ for questions 1–6 in the FOR questionnaire and responses (on a 10-point scale) of 7–10 for question 7 were deemed as having ‘significant’ FOR. In those raising the issue of FOR on the PCI, 79% (15/19) had significant problems compared to 24% (12/49) if they did not. FOR is a common concern and because it is not possible to identify patients based on clinical parameters, it is important to screen for FOR to direct patients to appropriate support and intervention.

UK population norms for the modified dental anxiety scale with percentile calculator: adult dental health survey 2009 results.

BackgroundA recent UK population survey of oral health included questions to assess dental anxiety to provide mean and prevalence estimates of this important psychological construct.MethodsA two-stage cluster sample was used for the survey across England, Wales, and Northern Ireland. The survey took place between October-December 2009, and January-April 2010. All interviewers were trained on survey procedures. Within the 7,233 households sampled there were 13,509 adults who were asked to participate in the survey and 11,382 participated (84%).ResultsThe scale was reliable and showed some evidence of unidimensionality. Estimated proportion of participants with high dental anxiety (cut-off score = 19) was 11.6%. Percentiles and confidence intervals were presented and can be estimated for individual patients across various age ranges and gender using an on-line tool.ConclusionsThe largest reported data set on the MDAS from a representative UK sample was presented. The scale’s psychometrics is supportive for the routine assessment of patient dental anxiety to compare against a number of major demographic groups categorised by age and sex. Practitioners within the UK have a resource to estimate the rarity of a particular patient’s level of dental anxiety, with confidence intervals, when using the on-line percentile calculator.

Current state and future prospects of research on fear of cancer recurrence

Despite a rapidly growing research interest in fear of cancer recurrence, lack of consensus on definition and measurement including clinical fear of cancer recurrence, sparse model development and testing, and limited available clinical interventions have impeded knowledge transfer into patient services. To move forward, a 2‐day colloquium was held in Ottawa, Canada in August 2015 to progress knowledge and identify future research directions. A comprehensive research program was proposed, including development of a clinical definition, an updated review of screening measures, and a review of existing interventions. A new special interest group was created with the International Psychosocial Oncology Society to facilitate the implementation of this research program and future international collaborations. Copyright

How head and neck consultants manage patients’ emotional distress during cancer follow-up consultations: a multilevel study

Head and neck cancer (HNC) patients suffer substantial emotional problems. This study aimed to explore how utterance-level variables (source, type and timing of emotional cues) and patient-level variables (e.g. age, gender and emotional well-being) relate to consultants’ responses (i.e. reducing or providing space) to patient expressions of emotional distress. Forty-three HNC outpatient follow-up consultations were audio recorded and coded, for patients’ expressions of emotional distress and consultants’ responses, using the Verona Coding Definitions of Emotional Sequence. Multilevel logistic regression modelled the probability of the occurrence of consultant-reduced space response as a function of patient distress cue expression, controlling for consultation and patient-related variables. An average of 3.5 cues/concerns (range 1–20) was identified per consultation where 84 out of 152 total cues/concerns were responded by reducing space. Cue type did not impact on response; likewise for the quality of patient emotional well-being. However, consultants were more likely to reduce space to cues elicited by patients, as opposed to those initiated by themselves. This reduced space response was more pronounced as the consultation continued. However, about 6xa0min into the consultation, this effect (i.e. tendency to block patients) started to weaken. Head and neck consultants’ responses to negative emotions depended on source and timing of patient emotional expressions. The findings are useful for training programme development to encourage consultants to be more flexible and open in the early stages of the consultation.

A phase II clinical trial of a dental health education program delivered by aboriginal health workers to prevent early childhood caries

BackgroundEarly Childhood Caries (ECC) is a widespread problem in Australian Aboriginal communities causing severe pain and sepsis. In addition dental services are difficult to access for many Aboriginal children and trying to obtain care can be stressful for the parents. The control of dental caries has been identified as a key indictor in the reduction of Indigenous disadvantage. Thus, there is a need for new approaches to prevent ECC, which reflect the cultural norms of Aboriginal communities.Methods/DesignThis is a Phase II single arm trial designed to gather information on the effectiveness of a dental health education program for Aboriginal children aged 6u2009months, followed over 2u2009years. The program will deliver advice from Aboriginal Health Workers on tooth brushing, diet and the use of fluoride toothpaste to Aboriginal families. Six waves of data collection will be conducted to enable estimates of change in parental knowledge and their views on the acceptability of the program. The Aboriginal Health Workers will also be interviewed to record their views on the acceptability and program feasibility. Clinical data on the child participants will be recorded when they are 30u2009months old and compared with a reference population of similar children when the study began. Latent variable modeling will be used to interpret the intervention effects on disease outcome.DiscussionThe research project will identify barriers to the implementation of a family centered Aboriginal oral health strategy, as well as the development of evidence to assist in the planning of a Phase III cluster randomized study.Trial registrationACTRN12612000712808

Why are people afraid of the dentist? Observations and explanations

Objective: The aim of this review was to explore the peer-reviewed literature to answer the question: ‘Why are people afraid of the dentist? Method: Relevant literature was identified by searching the following on-line databases: PubMed, PsycInfo, the Cochrane Library and Google Scholar. Publications were extracted if they explored the causes and consequences of dental fear, dental anxiety or dental phobia. Results: The research evidence suggests that the causes of dental fear, dental anxiety or dental phobia are related to exogenous factors such as direct learning from traumatic experiences, vicarious learning through significant others and the media, and endogenous factors such as inheritance and personality traits. Each individual aetiological factor is supported by the evidence provided. Conclusions: The evidence suggests that the aetiology of dental fear, anxiety or phobia is complex and multifactorial. The findings show that there are clear practical implications indicated by the existing research in this area: a better understanding of dental fear, anxiety and phobia may prevent treatment avoidance.