Age of onset of dental anxiety

Trajectories of dental anxiety in a birth cohort

OBJECTIVE

To examine predictors of dental anxiety trajectories in a longitudinal study of New Zealanders.

METHODS

Prospective study of a complete birth cohort born in 1972/73 in Dunedin, New Zealand, with dental anxiety scale (DAS) scores and dental utilization determined at ages 15, 18, 26 and 32 years. Personality traits were assessed at a superfactor and (more fine-grained) subscale level via the Multidimensional Personality Questionnaire at age 18 years. Group-based trajectory analysis was used to identify dental anxiety trajectories.

RESULTS

DAS scores from at least three assessments were available for 828 participants. Six dental anxiety trajectories were observed: stable nonanxious low (39.6%); stable nonanxious medium (37.9%); recovery (1.6%); adult-onset anxious (7.7%); stable anxious (7.2%) and adolescent-onset anxious (5.9%). Multivariate analysis showed that males and those with higher DMFS at age 15 years were more likely to be in the stable nonanxious low trajectory group. Membership of the stable nonanxious medium group was predicted by the dental caries experience at age 15 years. Participants who had lost one or more teeth between ages 26 and 32 years had almost twice the relative risk for membership of the adult-onset anxious group. Personality traits predicted group membership. Specifically, high scorers (via median split) on the 'stress reaction' subscale had over twice the risk of being in the stable anxious group; low scorers on the traditionalism subscale were more likely to be members of the recovery trajectory group; and high scorers on the 'social closeness' subscale had half the risk of being in the stable anxious group. Dental caries experience at age 5 years was also a predictor for the stable anxious group. Membership of the late-adolescent-onset anxious group was predicted by higher dental caries experience by age 15 years, but none of the other predictors was significant.

CONCLUSION

Six discrete trajectories of dental anxiety have been observed. Some trajectories (totalling more than 90% of the cohort) had clear associations with external influences, but others were more strongly associated with characteristics such as personality traits. A mix of both influences was observed with only the stable anxious dental anxiety trajectory.

Oral-health-related quality of life among children with and without dental fear

OBJECTIVES

This study aims to determine whether the oral-health-related quality of life (ORHQoL) and its dimensions differed among children with and without dental fear when different characteristics of fear were measured.

MATERIAL AND METHODS

The participants were 11- to 14-year-old Finnish child volunteers from the Oulu University Hospital cleft lip and/or palate (CLP) treatment register (n = 51) and schoolchildren (n = 82). Dental fear was measured with 'Treatment of dental decay' and 'Attending dentist' dimensions of the modified Children's Fear Survey Schedule-Dental Subscale and a single question. ORHQoL was measured with CPQ(11-14). Background variables were gender and the dental care experienced.

RESULTS

The response rates were 87% and 51% in the schoolchildren's and CLP groups, respectively. Those who were afraid of 'Treatment of dental decay' had higher mean CPQ(11-14 )total scores (33.2) and higher scores for social (8.8) and emotional well-being (9.0) than those who were not fearful (24.0, 6.2, and 5.8, respectively, P < 0.05), indicating poorer ORHQoL. Among those with experience of orthodontics, the association between dental fear and social and emotional well-being was weaker than among those with no experience of orthodontics.

CONCLUSION

Dental fear may have a negative effect on a child's ORHQoL, especially on social and emotional well-being. Positive minor treatment experiences might weaken this effect.

The clinically related predictors of dental fear in Taiwanese children

BACKGROUND

Dental fear has been singled out as one of the most troublesome problems facing paediatric dentistry today. Children with dental fear may avoid visiting dentists; therefore, their oral health protection is often compromised. However, the aetiology of dental fear is still not entirely understood.

OBJECTIVE

This study investigated the dental visiting habit, the previous dental experiences, the conditioning pathway, and the clinically related predictors of dental fear in children.

DESIGN

The dental history of 247 children (2-10 years old) was obtained when they came to a dental clinic for treatment. The level of dental fear in these children was assessed using the Children's Fear Survey Schedule-Dental Subscale (CFSS-DS). Observers rated the clinically anxious responses and uncooperative behaviour towards dental treatment in these children. Three stepwise regression analyses were performed to determine significant predictors of CFSS-DS score, clinically anxious responses, and uncooperative behaviour of children, respectively.

RESULTS

We found that the CFSS-DS score and clinical anxiety have different predictors, but age < or = 3.99 years old and cooperativeness in the first dental visit were important predictors for both the CFSS-DS score and the clinical anxiety. Furthermore, the other predictors of the CFSS-DS score were maternal dental fear, unbearable pain during the first dental visit, and visiting dentists in a regular dental clinic; the other predictors of clinical anxiety were first-born, regular dentist, and CFSS-DS score. Finally, the only significant predictor for uncooperative behaviour was clinical anxiety.

CONCLUSION

Children's dental fear and their anxious response during dental treatment were dynamic processes that consisted of many different factors. The direct conditioning of subjective experience of pain was more important than the objective pathway of child dental fear, and the indirect conditioning does not seem influential in this study sample.

Factors affecting dental anxiety and beliefs in an Indian population

The purpose of this study was to describe the possible factors that may affect dental anxiety and beliefs and to validate and test the psychometric properties of the Modified Dental Anxiety Scale (MDAS) and a Modified Dental Beliefs Scale (MDBS) among the patients attending a university dental clinic in India. A cross-sectional study design was used. A total of 482 general dental patients attending a university dental clinic returned completed forms of the Indian translations of the MDAS and MDBS. General information about the age, sex, occupation and educational qualifications of the respondents as well as information about past dental experiences was also collected. All the statistical analysis was carried out by the spss (version 10) statistical software package. The Indian translations of the MDAS and the MDBS were found to be internally reliable with a Cronbach's alpha of 0.78 and 0.85, respectively. Validity was demonstrated by a statistically significant correlation between the MDAS and the MDBS scores with the correlation coefficient of 0.47. Age was also inversely related to dental anxiety. Anxiety scores were higher among the less educated patients. Those who had a prior unpleasant dental experience showed higher dental anxiety and more negative dental beliefs. The data obtained in this study provided strong evidence for the psychometric properties of the Indian version of the MDAS and the MDBS.

Pain behaviour and distress in children during two sequential dental visits: comparing a computerised anaesthesia delivery system and a traditional syringe

OBJECTIVE

To compare the pain and distress response of children receiving a local anesthesia injection using a computerised device (Wand) or a traditional syringe over two consecutive treatment sessions and to study whether the response to the two injection techniques was different for high or low dentally anxious children.

DESIGN

Randomised controlled trial.

SETTING

Secondary dental care practice specialised in treating children.

SUBJECTS AND METHODS

Children were selected and randomly allocated to the Wand or traditional injection condition. Parents completed the Dental Subscale of the Children's Fear Survey Schedule (CFSS-ds). Based on video recordings of the injections, for each 15 seconds, the occurrence of five pain related behaviours was registered and a score was given on the Venham distress scale. Children rated their pain after each injection.

INTERVENTION

Over two consecutive treatment sessions one group received two local anaesthesia injections with the traditional syringe and the other group received two injections with the Wand.

OUTCOME MEASURES

The mean number of pain related behaviours, the mean distress scores and the self-reported pain scores were compared. Based on the CFSS-ds subjects were split into highly and low dentally anxious children.

RESULTS

One hundred and forty-seven subjects participated in the study: aged 4-11 years, 71 girls. Based on the behaviour displayed during the local anaesthesia injection and the self-reported pain after the injection, no difference could be found between an injection with the traditional syringe or the Wand over the first or second treatment session. However, on the first treatment session, highly anxious children reported more pain (p = 0.001), displayed more pain related behaviour (p = 0.002) and more distress (p <0.001) than low anxious children in reaction to the local anaesthesia injection.

CONCLUSION

No clear difference in the response of referred children could be found between an injection with the Wand or the traditional syringe. Level of dental anxiety was found to be an important factor in the response of children to a local anaesthesia injection.

Some psychometric properties of the Chinese version of the Modified Dental Anxiety Scale with cross validation

Objective

To assess the factorial structure and construct validity for the Chinese version of the Modified Dental Anxiety Scale (MDAS).

Materials and methods

A cross-sectional survey was conducted in March 2006 from adults in the Beijing area. The questionnaire consisted of sections to assess for participants' demographic profile and dental attendance patterns, the Chinese MDAS and the anxiety items from the Hospital Anxiety and Depression Scale (HADS). The analysis was conducted in two stages using confirmatory factor analysis and structural equation modelling. Cross validation was tested with a North West of England comparison sample.

Results

783 questionnaires were successfully completed from Beijing, 468 from England. The Chinese MDAS consisted of two factors: anticipatory dental anxiety (ADA) and treatment dental anxiety (TDA). Internal consistency coefficients (tau non-equivalent) were 0.74 and 0.86 respectively. Measurement properties were virtually identical for male and female respondents. Relationships of the Chinese MDAS with gender, age and dental attendance supported predictions. Significant structural parameters between the two sub-scales (negative affectivity and autonomic anxiety) of the HADS anxiety items and the two newly identified factors of the MDAS were confirmed and duplicated in the comparison sample.

Conclusion

The Chinese version of the MDAS has good psychometric properties and has the ability to assess, briefly, overall dental anxiety and two correlated but distinct aspects.

What are people afraid of during dental treatment? Anxiety-provoking capacity of 67 stimuli characteristic of the dental setting

Relatively little is known about the anxiety-provoking capacity of the various objects and situations characteristic of the dental setting. The aims of the current study were to establish a hierarchy of anxiety-provoking capacities of a large set of dental stimuli and to determine the differences in relation to gender, age, ethnicity, and level of dental trait anxiety. An additional aim was to derive an estimate of the number of stimuli to be presented to anxious patients in order to obtain full coverage of their dental fears. A questionnaire describing 67 potentially anxiety-provoking stimuli was constructed and presented to 960 adults. The results indicated that invasive stimuli (e.g. surgical procedures) were rated as the most anxiety provoking and that non-invasive stimuli (e.g. the dentist as a person) were the least anxiety provoking. The fear-evoking capacity of the dental stimuli varied with gender, age, ethnicity, and level of dental trait anxiety, whereas the rank order of these stimuli appeared to be independent of these factors. Furthermore, it appeared that the top 25 most anxiety-provoking objects and situations found in the current study contained only eight (28%) stimuli, which had been taken into account in previous research. The present findings support the need for assessment procedures using a broad spectrum of potentially anxiety-provoking stimuli.

Computerized anesthesia delivery system vs. traditional syringe: comparing pain and pain-related behavior in children

The aim of this study was to compare the behavioral reaction of children who receive local anesthesia with a traditional syringe with the behavioral reaction of children who receive local anesthesia with a computerized device (Wand) and to differentiate between the reactions of highly anxious children with those displaying low anxiety. One hundred and twenty-five children aged 4-11 yr were randomly allocated to receive local anesthesia with the Wand or a traditional injection. Parents completed the Dental Subscale of the Children's Fear Survey Schedule (CFSS-DS). Two independent observers scored videotapes of the anesthesia in 15-s intervals. The occurrence of muscle tension, crying, verbal protest, movement, and resistance was registered and a score was given on the Venham distress scale. The mean injection time with the Wand was four times as long as with the traditional syringe. During the first 15 s of the injection, low-anxious children receiving local anesthesia with the Wand displayed less muscle tension, less verbal protest and less movement than children receiving local anesthesia with the traditional syringe. Within the high-anxious group no differences were found. It was concluded that low-anxious children seem to benefit from the use of the Wand instead of the traditional syringe in receiving local anesthesia.

A national cross-sectional survey of dental anxiety in the French adult population

BACKGROUND

Dental anxiety is a public health problem but no epidemiological study has been undertaken in France to evaluate its prevalence. The aim of this study was to estimate the prevalence, severity and associations of dental anxiety in a sample of the French adult population.

METHODS

A convenience sample of 2725 adults (mean age = 47 years, SD16, minimum = 16, maximum = 101 years), representative of the French population with regard to age and urban distribution, completed a French version of the Corah Dental Anxiety scale (DAS) and a questionnaire relating to their dental appointments.

RESULTS

Moderate dental anxiety (14>or=DAS>or=13) was revealed for 172 persons (6.2%), while 195 (7.3%) had severe dental anxiety (DAS>or=15), giving an overall prevalence of dental anxiety of 13.5%. Prevalence was lower proportionally with age (P < 0.001) and was higher in French overseas territories and in the countryside (P < 0.01). Farmers and low skilled workers were significantly more anxious than executives and shopkeepers (P < 0.001). Anxiety was associated with avoidance of care (p < 0.001) and lack of regular dental appointments (p < 0.001).

CONCLUSION

Dental anxiety in France appears to concern a similar proportion of the population as in other industrialised European, Australasian or North American countries. Recommendations for prevention and management of dental anxiety are made with reference to dental education and health care services in France.

Dental anxiety among young Israeli male adults as related to treatment received during childhood

OBJECTIVES

To evaluate dental fear and anxiety among young male adults treated during childhood either by a certified pediatric dentist or a general dental practitioner.

METHODS

A structured questionnaire that included information regarding issues related to dental fear and anxiety (Intake Interview Questionnaire and the Dental Anxiety Scale) was completed by 497 young male army recruits (18 years old).

RESULTS

During childhood, 59 (11.9%) of the participants were treated on a regular basis by a certified pediatric dentist and 344 (69.2%) by a general dental practitioner. Sporadic care (not regular care) by general dental practitioners was given to 94 participants (18.9%). Average level of dental anxiety among participants treated by certified pediatric dentists was 7.9 compared to 8.2 (general dentists) and 8.7 (sporadic care by general dentists). There were no significant differences between the groups. However, significant differences were found in the prevalence of high dental anxiety between participants treated by a regular dentist in childhood and those treated sporadically (15.4% vs. 23.4%, respectively). Negative emotions were common. Environmental etiologic factors were infrequently reported.

CONCLUSIONS

The general level of dental anxiety among young Israeli males was normal. No relation was found between level of dental anxiety and the professional education of the treating dentist in childhood. Regular dental care in childhood has more effect on preventing the development of high dental anxiety than the professional education of the early caregiver.

Balancing efficacy and safety in the use of oral sedation in dental outpatients

BACKGROUND

Concerns about the safety of pediatric oral sedation and the incremental use of triazolam in adults prompted a workshop cosponsored by several professional organizations.

OVERVIEW

There is a strong need and demand for adult and pediatric sedation services. Using oral medication to achieve anxiolysis in adults appears to have a wide margin of safety. Mortality and serious morbidity, however, have been reported with oral conscious sedation, especially in young children. Most serious adverse events are related to potentially avoidable respiratory complications.

CONCLUSIONS

Clinical trials are needed to evaluate oral sedative drugs and combinations, as well as to develop discharge criteria with objective quantifiable measures of home readiness. Courses devoted to airway management should be developed for dentists who provide conscious sedation services. State regulation of enteral administration of sedatives to achieve conscious sedation is needed to ensure safety.

PRACTICE IMPLICATIONS

Safety in outpatient sedation is of paramount concern, with enteral administration of benzodiazepines appearing safe but poorly documented in the office setting. Conscious sedation by the enteral route, including incremental triazolam, necessitates careful patient evaluation, monitoring, documentation, facilities, equipment and personnel as described in American Dental Association and American Academy of Pediatric Dentistry guidelines.

Dental and medical injections: prevalence of self-reported problems among 18-yr-old subjects in Norway

The aim of the present study was to evaluate the prevalence of self-reported problems (fear, pain, unpleasantness, fainting) of dental and medical injections, and the extent to which such problems may lead to avoidance of necessary treatment. The study included a representative sample (n = 1385) of 18-yr-old students attending high schools in the county of Hordaland, Norway. Data were collected by use of questionnaires completed in the classrooms. More problems were reported during dental than medical injections. About 17% and 15% of participants reported high fear during their last dental and medical injection, respectively. Fainting had been experienced by 2% during a dental injection and by 7% during a medical injection. Avoidance of treatment when an injection is needed was 6.7% for dental treatment and 5.2% for medical treatment. In multiple regression analyses, fear was the only explanatory factor for the avoidance of dental treatment. It is concluded that self-reported problems of injections are prevalent in this age group, particularly among girls, and that it may lead to the avoidance of necessary treatment in 5-7% of the adolescent population.

Short-term antidepressant treatment of comorbid dental anxiety in patients with panic disorder

OBJECTIVES

The aims of this study were to determine the frequency of dental anxiety (DA) and dental phobia (DP) in panic disorder, and to follow the changes in DA levels during antidepressant treatment of panic disorder.

METHODS

Fifty-three controls and 102 panic disorder patients were assessed using the Structured Clinical Interview (SCID), the Panic-Agoraphobia Scale (PAS), and the Corah Dental Anxiety Scale (DAS). Oral health status was defined by the number of decayed, missing, and filled teeth (DMFT) index. The patients were classified into three groups: (1) those without dental anxiety (WDA), (2) those with dental anxiety (DA), and (3) those with dental phobia (DP). All patients were treated with antidepressants for 3 months and the response rates were assessed.

RESULTS

At baseline, DAS was significantly higher in both the DA and the DP groups than in the control group. Ten (9.8%) of the panic disorder patients fulfilled the diagnostic criteria for DP; 31 (30.4%) had severe DA. In the control group, none of the patients was diagnosed as DP, whereas 7 (13.5%) had severe DA. Panic disorder and DA both responded to the antidepressant treatment, but DAS scores remained significantly higher in the DP group than in the DA group and the control group at the end of the third month.

CONCLUSIONS

Our data suggest that both DA and DP are more frequent in panic disorder than in healthy controls. Antidepressant treatment may have been helpful in decreasing DA levels in the DA group but not in the DP group.

Reliability and validity of the Modified Dental Anxiety Scale (MDAS) in a Turkish population

OBJECTIVES

Fear of dentistry is a common obstacle to obtaining dental care in Turkey. The aim of this study was to assess the reliability, validity and psychometric characteristics of the Turkish translation of the Modified Dental Anxiety Scale (MDAS) and compare it to the Dental Fear Survey (DFS) scores obtained in the same population.

METHODS

The Turkish translated version of the MDAS was administered to 115 dental patients; 21 subjects who suffered from dental phobia, requiring general anesthesia for dental procedures, and 94 who did not have dental anxiety, in addition to 442 subjects from the general population.

RESULTS

The Turkish translated version of the MDAS was internally consistent and reproducible. The patients with dentist phobia had the highest score. The Turkish MDAS correlated with the DFS (r = 0.80, P < 0.001). The MDAS scale correlated inversely (r = -0.14, P < 0.005) with level of education; however, it did not correlate with economic status. Women scored higher than men on the scale (mean = 12.3, SD = 5.2 vs. mean = 10.9, SD = 4.5, P < 0.005). At a cut-off point > or = 15, sensitivity was 0.80, specificity 0.74, positive predictive value 0.41 and negative predictive value 0.94.

CONCLUSION

Although the specificity values were low, the Turkish MDAS demonstrated acceptable sensitivity, positive and negative predictive values. Thus, high reliability and validity of the MDAS supports its cross-cultural validity and indicated that it may be a valuable tool in quantifying fear of dentistry among Turks.

Childhood dental history and adult dental attitudes and beliefs

OBJECTIVE

To examine associations between childhood dental visits and attitudes and beliefs about dental care, and oral health as measured during adulthood.

METHODS

The data were taken from the Florida Dental Care Study (FDCS), a prospective longitudinal study of oral health and dental care, among 683 adults 45 years of age and older who answered questions about early dental history at the 54-month follow-up interview.

RESULTS

Fifty-nine per cent (n = 400) reported having had a dental visit before 18 years of age. Of those with a childhood visit, 72% reported that the first dental visit was a negative experience. Having a childhood dental visit was associated with several positive attitudes and beliefs about dental care. In addition, having early experiences with a dentist was associated with preventive and restorative dental visits and several objective and subjective measures of oral health. Having a negative childhood experience was associated with only one of the adult dental attitude and beliefs subscales, and none of the oral health behaviours.

CONCLUSIONS

Our data suggest that the socialisation associated with early dental visits may occur even though the experience may have been painful or frightening. Although this study design precluded direct inference about causation, these findings do support the utility of further investigations into possible causative linkages between childhood dental experiences and adult attitudinal and dental health outcomes.

A survey on the uses of acupuncture by a group of UK dentists

A small number of fully trained Chinese doctors practise Traditional Chinese Medicine (TCM) in western cities. Use of these services by British citizens is extremely limited, mostly due to lack of any knowledge on the effectiveness of acupuncture or exposure to complementary medicine in this country. Common situations where British patients seek the help of TCM are when medical therapy has failed; in relapsing chronic diseases like asthma, rheumatoid arthritis; and in pain management (mostly headache, migraine and back pain). Patients often appreciate that only limited interventions are available for treatment of these conditions in western medicine. At least one in 10 UK specialist physicians are actively involved in complementary and alternative medicine treatments.(1) A large number of westerners offer acupuncture therapy but lack basic medical training. It is likely that people are reluctant to use these services largely because of hygiene and safety reasons. Moreover, it has been demonstrated that the serious side effects reported are five times more frequent when treatments are provided by non-medically trained therapists compared with professionally registered health care providers.(2).

Attitudes to Conscious Sedation in Patients Attending an Emergency Dental Clinic

Introduction

Anxiety and fear in relation to dentistry are long-standing problems and the incidence of dental fear does not appear to be decreasing. It can result in poor dental health and wastage of clinical time. Conscious sedation is one method of allaying anxiety in dental patients and enables such patients to accept dental treatment.

Aims, Materials and Methods

A questionnaire survey was undertaken among patients attending an emergency dental clinic. Its aims were to assess the levels of dental anxiety in these subjects, the impact on their attendance for dental treatment, and their knowledge of and desire to have conscious sedation, should it be available.

Results

The results indicated that in the 72 patients who responded, levels of anxiety regarding dental treatment were high, with 49 (68%) claiming some nervousness or worse. Thirty-one (43%) cited fear/nervousness as a reason for delaying making a dental appointment. Twenty-seven (38%) were not aware of the existence of conscious sedation for dental treatment, of whom half reported that they were in the highly anxious group. Forty (56%) respondents said they would like to have sedation if it were available. Twenty-five (35%) claimed to have received sedation for dental treatment in the past.

Conclusion

It was concluded that the availability of dental sedation was currently not matching the needs and demands of several patients who took part in the survey. Increased availability of dental sedation could remove a barrier to dental care for many highly anxious dental patients.

Dental fear and oral health and family characteristics of Finnish children

OBJECTIVES

Our aim was to describe the occurrence of dental fear among Finnish children of different ages and to ascertain how oral health and family characteristics are associated with dental fear.

METHODS

The subject groups were aged 3, 6, 9, 12, and 15 years in two middle-sized cities, and the 1474 participants were distributed over fairly equal samples of each age. A questionnaire given to each child to be filled out at home enquired about social background, oral hygiene habits, diet, and dental fear. Oral health status was examined clinically and radiographically by two calibrated dentists. Multiple logistic regression analyses were performed for each age group in order to study the associations between dental fear and selected factors.

RESULTS

Dental fear was higher among 12- and 15-year-old children than among the younger ones. Pain, drilling, and local anesthesia were reported to be the most frightening aspects. Excluding the 12-year-olds, children whose family members reported dental fear were more likely to report dental fear than children whose family members did not report dental fear. Six- and 12-year-olds who had experienced caries were more likely to report dental fear than were caries-free children. Among 6-year-olds, father's education modified the effect of a child's caries experience on child dental fear. Frequent intake of sugary items and a limit on eating candies to only one day per week were associated with higher dental fear.

CONCLUSIONS

Fear of dental treatment is still fairly common among Finnish children, and the factors associated with it differ with the age of the child.

Path model of psychological antecedents to pain experience: experimental and clinical findings

OBJECTIVES

Two studies are described addressing how anxiety, fear of pain, and catastrophizing impact on pain experience.

METHODS

In study 1, 66 undergraduates (34 men, 32 women) completed measures of state and trait anxiety, fear of pain, and catastrophizing prior to participating in a cold pressor procedure. In study 2, 60 undergraduates (30 men, 30 women) completed the same measures and participated in dental hygiene treatment and rated the pain they experienced during a scaling procedure (removing deposits from the tooth surface).

RESULTS

In both studies, fear of pain and catastrophizing were significantly correlated with pain intensity ratings, and fear of pain and catastrophizing were correlated with each other. Trait anxiety was correlated with catastrophizing but not with fear of pain or pain. Path analyses revealed significant paths from trait anxiety to state anxiety, from trait anxiety to catastrophizing, and from catastrophizing to pain intensity ratings.

DISCUSSION

The findings suggest that although fear of pain and catastrophizing are related constructs, catastrophizing provides unique predictive ability for pain ratings, while fear of pain does not. Clinical and theoretical implications of these findings are discussed.

The relationship between anxiety and dental treatment experience in 5-year-old children

OBJECTIVES

To examine the relationship between dental anxiety, dental attendance and past treatment history in 5-year-old children after taking into account confounding influences.

METHODS

A cross sectional study of all 5-year-old children living in Ellesmere Port and Chester. All children were clinically examined and dmft and its components were recorded. A postal questionnaire was sent to parents of participating children to identify whether children attended the dentist on a regular asymptomatic basis or only when experiencing problems. Additionally parents were asked to judge whether they and their child were anxious about dental treatment. The socio-economic status of the family was measured using the Townsend Material Deprivation Index of the electoral ward in which they resided. The bivariate relationships between anxiety and reported attendance experience, past extraction and restoration history were using chi-square and t-tests. Multiple logistic regression analyses identify predictors for dental anxiety.

RESULTS

A total of 1,745 children received both a clinical examination and a questionnaire and 1,437 parents responded, a response rate of 82.3%. One in ten parents (10.8b) judged their child to be dentally anxious. Anxious children had significantly (p<0.001] more caries experience (dmft 2.58 vs 1.12). Multiple logistic regression analyses confirmed that anxious children were more likely to be irregular attenders (OR 3.33, 95% Cl 2.22, 5.00), have anxious parents (OR 1.60,95% Cl 1.09, 2.36), and to have undergone dental extraction in the past[OR 3.50, 95% CI 2.10, 5.85), after controlling for gender and socio-economic status. A past history of restoration was not a significant predictor of anxiety after controlling for other factors.

CONCLUSIONS

Dental anxiety is a fairly common condition in 5-year-old children in the North West of England. It is closely associated with asymptomatic, irregular attendance pattern, a history of extraction and having a dentally anxious parent. The cause and effect dynamics of these relationships need to be determined.

Are there differences in oral health and oral health behavior between individuals with high and low dental fear?

Epidemiological studies of the relationship between dental fear, use of dental services, and oral health in different age groups in a common population are scarce. Dental fear and its relationships are usually described in individuals with high dental fear only. The purposes of this study were to describe the prevalence of dental fear in the Norwegian adult population according to age, and to explore differences in oral health, oral hygiene, and visiting habits between individuals with high and low dental fear. For the present study, data from the Trøndelag-94 study were used. The prevalence of dental fear in our study population of adults in Trøndelag, Norway was 6.6%. There was a tendency for individuals with high dental fear to engage in avoidance behavior more frequently than the low dental fear group. Individuals with high dental fear had a statistically significantly higher number of decayed surfaces (DS), decayed teeth, (DT) and missing teeth (MT) but a statistically significantly lower number of filled surfaces (FS), filled teeth (FT), functional surfaces (FSS), and functional teeth (FST). There were no differences in DMFS and DMFT between the groups of high and low dental fear. Since one of the superior aims of the dental profession is to help a patient to achieve a high number of functional teeth throughout life, consequently detecting and treating dental fear should therefore be an important aspect of dental processionals' work.

The etiology of childhood dental fear: the role of dental and conditioning experiences

This study was aimed to examine the relative importance of invasive treatment experiences in the acquisition of dental fear in children. For this purpose, the complete dental history of 401 children (5-10 years) was studied. The level of dental fear in these children was assessed using the Dental Subscale of the Children's Fear Survey Schedule (CFSS-DS). Differences in treatment variables between fearful and low fearful children were analyzed, and regression analysis was performed to determine significant predictors of dental fear. A significant but weak relation with the number of extractions was found, while no relation with the number of fillings was found. The results have indicated that within the (direct) conditioning pathway, objective dental experiences seem to play a minor role in children's fear acquisition, and it was suggested that subjective dental experiences may play a more decisive role. In addition, clinical support for the latent inhibition theory was provided.

Trauma-related phenomena in anxious dental patients

OBJECTIVES

The main purpose of this descriptive study was to investigate whether dental anxiety is associated with the occurrence of trauma-related symptoms (i.e. recurrent memories and a tendency to avoid these memories) associated with earlier traumatic dental experiences.

METHODS

A sample of 37 consecutive anxious patients attending a dental fear clinic was assessed prior to dental treatment. The results were compared with those of a sample of 32 consecutive patients of a general dental practice, who served as a reference group.

RESULTS

The proportion of patients who indicated they had had a horrific dental experience at least once in their life did not significantly differ between the anxious group and the reference group. Conversely, significantly more patients (76%) in the anxious group reported suffering from memories of these events. They also showed a higher level of trauma-related symptomatology as indexed by the Impact of Event Scale (IES). About half of the anxious patients suffered from symptoms typically reported by patients with posttraumatic stress disorder (PTSD). Severity of dental anxiety showed a high correlation with both frequency of intrusions (r = 0.64, P < 0.001) and avoidance of the memories (r = 0.62, P < 0.001).

CONCLUSIONS

The results suggest that in anticipation of treatment dentally anxious individuals suffer from a high level of intrusive recollections of earlier dental experiences.

The use of restraint in the treatment of paediatric dental patients: old and new insights

OBJECTIVE

This article reviews aspects of the restraint strategies in paediatric dentistry that have been reviewed in recent years and point out those strategies that remain controversial as well as questionable.

METHODS

Studies that evaluated demographic and cultural factors that influence dentists' use of restraint, discussion of the rationale behind the use of restraint, the role of parents, informed consent, use of restraints at the undergraduate and at the postgraduate level, and some ethical questions were selected.

CONCLUSIONS

Practice location, caries prevalence, and the educational backgrounds of the dentist played a role in the selection of behavioural strategies. Use of these techniques varied depending on the age of the dentist and the dental school from which the dentist had graduated. Parents are one leg of the child/dentist/parent triangle and therefore have a role to play in the determination of treatment strategies. Dentists must select techniques that help to instill a positive dental attitude in the child by performing treatment effectively and efficiently. Dentists must inform parents of all aspects of the applied strategy and must have their approval.

Trauma-related sequelae in individuals with a high level of dental anxiety. Does this interfere with treatment outcome?

This study assessed trauma-related sequelae of 56 highly anxious patients attending a dental fear clinic. It was also examined whether such symptomatology interferes with anxiety reduction in response to a cognitive-behavioral treatment approach. About 34 patients (59%) indicated that they had experienced one or more aversive dental events that could explain the onset of their dental anxiety. There was no difference between the dental anxiety scores of patients who reported such a background and those who did not. Severity of trauma-related symptomatology was indexed by the Impact of Event Scale (IES). The mean IES score of patients with a traumatically induced dental fear was remarkably high (33.0; SD=19.7). Furthermore, there was a strong direct relationship between severity of trauma-related symptomatology and severity of dental anxiety (shared variance was 38%). Two patients (10%) met all DSM-IV diagnostic criteria for Posttraumatic Stress Disorder (PTSD) on the basis of the Self-Rating Scale for PTSD. However, no evidence was found to suggest that either a traumatic background, or level of trauma-related symptomatology, has a negative effect on treatment outcome.

Relationship between children's first dental visit and their dental anxiety in the Veneto Region of Italy

The aim of this study was to explore the association between negative experiences during children's first dental visit and any subsequent dental anxiety and related factors in three dental clinics in the Veneto Region of Italy. For this purpose, parents of 378 children filled out a questionnaire. Factors related to child dental anxiety (none-some/fairly much-very much) were explored by means of logistic regression analysis. The independent variables were: problems with tht first dental visit (no/yes), parental dental anxiety (none-some/fairly much-very much), number of previous visits (0-3/4 < or =) site visited (public/private) and age of the child (< 10 years/10 < or = years). Parental anxiety was associated with child's anxiety (OR = 2.3, 95% CI = 1.1-4.9). A problematic first visit was a strong predictor of dental anxiety. However, this effect was modified by the number of subsequent visits. Children with 4 or more visits after the first visit were less likely to be anxious after a problematic first visit (OR = 4.6, 95% CI = 1.5-14.1) than children with 3 visits or less after the first visit (OR = 19.8, 95% CI = 7.2-54.5). Thus, the negative effect of a problematic first visit may fade during subsequent dental visits.

Non-associative fear acquisition: a review of the evidence from retrospective and longitudinal research

It is axiomatic that the capacity to experience fear is adaptive, enabling rapid and energetic response to imminent threat or danger. Despite the generally accepted utility of functional fear, the nature of maladaptive fear remains controversial. There is still no consensus about how specific fears and phobias are acquired and modulated. Two major schools of thought are apparent: those suggesting dysfunctional fear arises largely as the result of associative-conditioning processes versus those who favour more biologically based etiological explanations. In this regard, the non-associative model of fear acquisition postulates the existence of a limited number of innate, evolutionary-relevant fears, while emphasising conditioning modes of onset for evolutionary-neutral fears. Recent retrospective and longitudinal studies have tested predictions from the non-associative model. In general, findings support non-associative hypotheses and are difficult to reconcile with neo-conditioning explanations of fear acquisition. These data suggest that four pathways to fear may provide the most parsimonious theory of fear etiology. The theoretical and practical implications of adding a fourth, non-associative path to Rachman's (Behav. Res. Ther. (1977) 15, 375-387) three 'associative' pathways are discussed. Unresolved issues requiring further investigation are considered.

Determinants of early- vs late-onset dental fear in a longitudinal-epidemiological study

A longitudinal investigation of risk factors for early- and late-onset dental fear was conducted. Early-onset dental fear was related to conditioning experiences (indexed via caries level and tooth loss), service use patterns, stress reactive personality and specific beliefs about health professionals. Late-onset dental fear was related to aversive conditioning experiences, irregular service use and an external locus of control. In contrast to recent findings for dental anxiety, personality factors were not strongly related to the onset of dental fear in young adulthood. The key role played by conditioning events in the development of both early- and late-onset dental fear was confirmed. Conditioning events appear to play a different role in the development of dental fear vs dental anxiety. This may reflect important, but largely ignored differences between these two closely-related constructs. Interventions for early-onset dental fear should aim to modify both the dental fear and the personality vulnerabilities that may contribute to the development of dental fear early in the life-course.

Using psychological assessment and therapeutic strategies to enhance well-being

OBJECTIVE

To provide an overview of the psychological assessment; results from studies examining psychological issues among individuals with craniofacial anomalies (CFA) and other chronic conditions; resilience; and therapeutic strategies to enhance psychological well-being.

CONCLUSIONS

The literature on chronic conditions and findings from studies with people having CFA and their families demonstrate a range of effective adaptation patterns and strategies to enhance issues having an impact on quality of life.

Dental fear among a young adult Saudian population

AIMS

To assess the prevalence of dental fear and reasons for irregular dental attendance among young adult university students; to describe the gender distribution of the dentally anxious population according to the perceived origins or sources of fear; to identify the time of fear development and preference for anaesthesia or sedation before dental treatment.

METHOD

A questionnaire incorporating the Dental Fear Scale (DFS) with items related to sources of dental fear stimuli, together with the preference of anaesthesia or sedation before dental treatment and other characteristics. Approximately 500 questionnaires were distributed among Saudian undergraduate students.

RESULTS

368 questionnaires were completed and presented for statistical analysis. The sight and sensation of anaesthetic needles and the sight, sound and sensation of the drill were rated the most fear-eliciting stimuli. Also, females tended to be more anxious than males. Increased heart rate was the most common reported physiological response to fear resulting from dental treatment. The overall level of fear of dental work among the studied population was found to be about 39%.'Lack of time' and 'no need for treatment' were found to be the main reasons for irregular dental visits. Fear of pain and trauma were the major perceived sources of reported fear reactions and were developed mainly during childhood. About 63% of the subjects preferred to have local anaesthesia before dental treatment to prevent or ameliorate dental fear.

Dental anxiety in relation to mental health and personality factors. A longitudinal study of middle-aged and elderly women

Little is known about the longitudinal course of dental anxiety in relation to age, mental health and personality factors. In 1968 69 a representative sample of 778 women aged 38 to 54 yr took part in a psychiatric examination. Three hundred and ten were followed up in 1992-93. A phobia questionnaire, including assessment of dental fear, and the Eysenck Personality Inventory were distributed to the participants at both occasions. High dental fear was reported by 16.8% of the women at baseline and was associated with a higher number of other phobias, a higher level of neuroticism, more psychiatric impairment, more social disability due to phobic disorder, and a higher anxiety level. Among women who reported high dental fear in 1968 69 (n=36), 64% remitted and 36% remained fearful. Among women with low dental fear in 1968 69 (n = 274), 5% reported high dental fear in 1992-93. Chronicity was associated with higher neuroticism, lower extraversion, and more psychiatric impairment at base-line. Remission was associated with higher extraversion at baseline. Dental anxiety increased or decreased over time in concert with the number of other fears.

Further evidence for the reliability and validity of the Modified Dental Anxiety Scale

AIM

To gain further evidence of the psychometric properties of the Modified Dental Anxiety Scale.

SETTING

Dental admission clinics.

DESIGN

Consecutive sampling, cross-sectional survey.

PARTICIPANTS

Patients (n = 800) in four cities (Belfast, Northern Ireland; Helsinki, Finland; Jyväskylä, Finland and Dubai, UAE).

METHODS

Questionnaire booklet handed to patients, attending clinics, for completion following an invitation by the researcher to be included in the study.

MEASURES

Modified Dental Anxiety Scale (MDAS), together with further questions concerning dental attendance and nervousness about dental procedures.

RESULTS

Overall 9.3 per cent of patients indicated high dental anxiety. MDAS showed high levels of internal consistency, and good construct validity. The relationship of dental anxiety with age was similar to previous reports and showed lowered anxiety levels in older patients.

CONCLUSION

Data from three countries has supported the psychometric properties of this modified and brief dental anxiety scale.

Factors associated with dental anxiety among older people in Britain

OBJECTIVE

This paper reports on a study of dental anxiety among adults aged 60 years living independently in Britain.

DESIGN

A national cross-sectional study carried out with the assistance of the Office for National Statistics' Omnibus Surveys in 1999.

SETTING

Data was collected by face to face interviews with older people in their homes.

MEASUREMENTS

Data on dental anxiety were collected from 973 subjects by means of face to face interviews and was measured by the Dental Anxiety Scale (DAS) (Corah, 1969). In addition, data on dental service use and oral health status (self-reported) was collected.

RESULTS

The mean DAS score was 8.4 (sd 3.5), and 13% (129) of subjects were classified as dentally anxious (DAS > or = 13). DAS scores were associated with numerous socio-demographic factors (P < 0.01), self-reported oral health status (P < 0.01) and dental service (P < 0.01) factors. A series of regression analyses revealed that dental anxiety was a significant predictor of a number of behavioural and oral health outcomes.

CONCLUSION

One in eight older people in Britain are dentally anxious and this is associated with their use of services and oral health status (self-reported).