Parental knowledge and attitudes towards dental radiography for children.
ABSTRACT BACKGROUND: Radiographs are an essential part of most clinical dental examinations and diagnoses. The aim of the study was to assess the knowledge and attitudes of parents towards dental radiographs for their children. METHODS: A 21-item questionnaire, covering parental level of radiation knowledge and socio-demographics was applied. Sliding scales were used to assess attitude towards dental radiographs. RESULTS: There were 1467 questionnaires distributed between five primary schools in the Perth (Western Australia) metropolitan area, with 309 surveys (21%) returned for collection. Most parents displayed a low level of knowledge, but had a positive attitude towards dental radiographs. Parents with children who have previously had dental radiographs perceived dental radiographs as 'good', 'useful' and 'pleasant'. A higher level of education and parents with children who have previously had radiographs were significantly associated with a higher level of knowledge about dental radiography. Parents who had higher scores on questions assessing radiation knowledge were more likely to perceive dental radiographs as 'safe' and 'beneficial'. CONCLUSIONS: Most parents have a positive attitude towards dental radiographs on their children. However, the majority of parents lack knowledge regarding dental radiography, especially regarding the risks involved.
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ABSTRACT: Oral healthcare in rural communities shares many of the dilemmas faced by medicine in providing services to large geographical areas with dispersed populations. This study examined the population data and service provision data relevant to the geographical distribution of oral health care in Western Australia (WA). Of the 1.7 million people resident in WA, 72% were resident in the five major urban centres with only 13% in rural and remote regions. Of the 320 postcode regions, 186 had a population of less than 2500, 31 had a population from 2500 to 5000, 42 from 5000 to 10,000, 37 from 10,000 to 20,000, and 24 had a population greater that 20,000. Almost 80% of postcode regions with a population less than 2500 are in non-urban regions. Of the total of 690 dentists who were analysed in this study, it was found that the vast majority (greater than 85%) worked in practices in postcode regions within metropolitan Perth or the major urban centres. A total of 43 postcode regions did not have a dental practice within their bounds. In order to address this disparity in service availability, strategies including the development of training for medical practitioners and auxiliaries, the use of modern technology, school-based programs and the development of interdisciplinary links should be implemented. These strategies would also facilitate the development of closer links between medical and dental practitioners and the development of skills within the medical fraternity that would facilitate improved oral health in rural and remote communities.Australian Journal of Rural Health 03/2000; 8(1):22-8. · 1.55 Impact Factor
Article: Are dental; radiographs safe?[show abstract] [hide abstract]
ABSTRACT: Dental patients are often aware that radiation has the potential to harm them but they do not usually understand how or why and what potential harmful effects may arise from dental radiographs. The potential for undesirable effects must be balanced against the benefits obtained from radiographs. Dentists should address the concerns of patients who question the need for radiographs and allow them to make an informed decision. Data are available that relate radiation exposure levels from medical and dental radiographs to normal background exposure levels and allow comparisons with everyday risks in life. Recognized radiation authorities publish guidelines to help dentists with their use of radiographs, although, due to the time lag associated with testing and the publication of results, some of the published data may not always be entirely relevant to currently used X-ray machines and techniques. Dentists also have professional obligations not only to limit the use of radiographs to potentially beneficial situations but also to take good quality diagnostic radiographs, to limit the doses used, to use good radiation safety measures and to use modern equipment to achieve the best possible films. Radiographs must then be properly developed and viewed under appropriate conditions to gain the maximum possible diagnostic information from each exposure.Australian Dental Journal 08/2000; 45(3):208 - 213. · 1.37 Impact Factor
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ABSTRACT: The aim of this article is to provide a general method to help explain radiation exposure to patients presenting for nuclear medicine procedures. The concept is to convert the effective dose from any nuclear medicine procedure to the equivalent time in months or years to obtain the same effective dose from background radiation. The effective dose of each common diagnostic nuclear medicine procedure was obtained from the literature and the corresponding background equivalent radiation time (BERT) was calculated assuming an average background radiation of 3 mSv/y. A table of the BERT has been compiled for common nuclear medicine procedures. The BERT table provides a simple approach to help physicians and technologists effectively communicate radiation exposure information and perhaps potential radiation risk.Journal of Nuclear Medicine Technology 10/2001; 29(3):156-8.
Parental knowledge and attitudes towards dental
radiography for children
R Chiri,* S Awan,* S Archibald,* PV Abbott*
*School of Dentistry, The University of Western Australia, Perth.
Background: Radiographs are an essential part of most clinical dental examinations and diagnoses. The aim of the study
was to assess the knowledge and attitudes of parents towards dental radiographs for their children.
Methods: A 21-item questionnaire, covering parental level of radiation knowledge and socio-demographics was applied.
Sliding scales were used to assess attitude towards dental radiographs.
Results: There were 1467 questionnaires distributed between five primary schools in the Perth (Western Australia) metro-
politan area, with 309 surveys (21%) returned for collection. Most parents displayed a low level of knowledge, but had
a positive attitude towards dental radiographs. Parents with children who have previously had dental radiographs
perceived dental radiographs as ‘good’, ‘useful’ and ‘pleasant’. A higher level of education and parents with children
who have previously had radiographs were significantly associated with a higher level of knowledge about dental radiog-
raphy. Parents who had higher scores on questions assessing radiation knowledge were more likely to perceive dental
radiographs as ‘safe’ and ‘beneficial’.
Conclusions: Most parents have a positive attitude towards dental radiographs on their children. However, the majority
of parents lack knowledge regarding dental radiography, especially regarding the risks involved.
Keywords: Attitude, education, dental, knowledge, radiography.
Abbreviations and acronyms: ICRP = International Commission on Radiological Protection.
(Accepted for publication 1 August 2012.)
Dental radiographs play an important role in the
detection and management of oral diseases.1,2While
radiation exposure in the dental setting is relatively
low, it is one of the most frequently undertaken radio-
graphic procedures, and is often repeated several times
during childhood and adolescence.3
In today’s medico-legal minefield, informed consent
to undertake radiographs is an often overlooked issue
in dental treatment. It is unknown whether clinicians
are providing information about radiation safety and
if this information is understood and retained by the
public. When visiting the dentist, parents entrust the
dentist with the care of their children and therefore
they have the right to understand the often complex
risks and benefits of a procedure, including the taking
Radiographs often add critical information to the
clinical examination,4revealing developmental and
eruption problems4,5in addition to caries, pulp and
periapical pathoses.6Radiographic guidelines exist to
avoid unnecessary exposure, as well as to identify
individuals for whom radiographic examination will
However, the 2007 International
Commission on Radiological Protection (ICRP) guide-
lines suggest that the cancer risk associated with den-
previously estimated in the 1990 ICRP guidelines.6,7
In particular, several studies have alluded to an
increased risk of thyroid cancer, meningioma and sali-
vary tumours.8–11Furthermore, the cumulative nature
of radiation exposure over a patient’s lifetime and
increased radio-sensitivity of children6increases the
importance of explaining radiation risks to parents.
While several studies have either examined physi-
cians’ and other allied health professionals’ knowledge
and attitudes on radiation risks12,13
perception of CT and SPECT imaging,13–15there is no
information in the literature regarding the knowledge
and attitude that parents have regarding dental radi-
ography for their children. It is thus unknown
whether radiation fears are exaggerated, or whether
parents recognize and accept the associated risks.
© 2013 Australian Dental Association163
Australian Dental Journal 2013; 58: 163–169
Australian Dental Journal
The official journal of the Australian Dental Association
The purpose of this study was to assess the know-
ledge and attitudes of parents towards dental radio-
graphs for children and other associated factors.
MATERIALS AND METHODS
Ethical approval of the project was granted by the
Human Research Ethics Committee of The University
of Western Australia.
The research project was a cross-sectional design
and involved the development of a questionnaire.
Eight primary schools in the Perth metropolitan area
were approached and five were willing to participate
on a voluntary basis. The schools were chosen
based on convenience. A total of 1467 question-
naires were distributed to parents with the regular
school newsletters. Parents were asked to return the
completed questionnaires to the school for collection
by members of the research team. Questionnaires
were sent with a cover letter outlining the aims of
the project and explaining that participation was
voluntary. A return of the questionnaire indicated
consent and all questionnaires were anonymous.
After collection of responses, an information bro-
chure was designed and distributed to the parents
highlighting the risks and benefits of dental radio-
The testing instrument was a 21-item questionnaire,
which assessed the parental level of knowledge and
attitude of dental radiography for children. Questions
were designed to elicit information about the depen-
dent variables (knowledge and attitude) and a series of
independent variables, as follows: (1) postcode; (2)
level of parental education; (3) regularity of the par-
ents’ and child’s dental visits; (4) whether the parent
accompanies the child to the dentist; (5) whether the
child attends the school dental service, private dentist or
both; (6) whether the child has previously had radio-
graphs taken; and (7) parental education by the dentist
regarding risks of and reasons for requiring dental
planned behaviour,16where a series of sliding scales
with bipolar adjectives were used. Markings along the
categorized into three equal groups, namely agree, dis-
agree and undecided.
was measuredusingAjzen’s theoryof
The sliding scales used were: (1) valuable–worthless
(measuring parents’ perception of usefulness); (2)
harmful–beneficial (measuring parents’ perception of
safety); (3) pleasant–unpleasant; and (4) bad–good.
An additional question of ‘do you believe the benefits
from dental radiographs outweigh the risks’ was also
The adjectives chosen cover the two separable com-
ponents that Ajzen discusses as being required to
accurately measure attitude. The first component is
instrumental in nature representing adjectives such as
valuable–worthless and harmful–beneficial. The sec-
ond component is experiential in nature and was
reflected in the pleasant–unpleasant scale. The bad–
good scale was also included as this tends to capture
the overall attitude well.17
Measuring level of radiation knowledge
respondents answered a series of statements correctly,
incorrectly or did not know. The statements were: (1)
the exposure from a dental X-ray is too small to put
my child at any significant risk or harm; (2) children
are at a higher risk of harm from X-rays than adults;
(3) exposure to radiation from the environment (e.g.
the sun) is higher than radiation from dental X-rays;
(4) exposure to radiation for other medical purposes
(e.g. chest X-ray) is higher than radiation from dental
X-rays; and (5) children wearing a lead apron when
dental X-rays are being taken will be totally protected
against possible radiation damage.
The ‘I do not know’ option was included to allow
participants to acknowledge that they were lacking
information and to prevent guessing of answers. An
overall radiation knowledge score was produced by
summing the total number of correct answers.
was measuredbyassessing whether
Questionnaire responses were analysed using the Sta-
(Chicago, IL, USA). The relationship between the
dependant variables (knowledge and attitude) and the
independent variables was calculated with cross tabs
and the Pearson’s chi-squared test. Postcodes were
used to estimate the socioeconomic status of respon-
dents by using the Australian Bureau of Statistics
Index of Relative Socioeconomic Advantage and
A total of 309 of the 1467 surveys (21%) were
returned during the collection period. Of the 309 par-
ticipants, 70 failed to complete all survey items. Given
164© 2013 Australian Dental Association
R Chiri et al.
the independent nature of the questions, analysis on
the remainder of the responses was still possible.
The highest level of education of the participants was
a bachelor degree (34%), followed by TAFE/appren-
ticeship (27%). The percentage of children attending
the dentist 1–2 times per year was 97% and only 6%
of parents did not accompany their child/ren to the
School Dental Service (SDS) (42%) or a private den-
tist (36%) and the remainder attended both. There
were 61% of parents who stated that their children
had received radiographs before. Table 1 summarizes
the demographic data.
Postcodes were used to gauge the socioeconomic sta-
tus of the respondents. Over 90% of respondents
were from higher socioeconomic backgrounds, falling
among the top four deciles of the Index of Relative
Socioeconomic Advantage and Disadvantage.18This
made analysis unreliable and hence the influence of
socioeconomic status was not further investigated.
Several elements of attitude were measured, namely
the perception of how good, pleasant, useful and safe
radiographs are. Responses recorded an overall posi-
tive opinion of dental radiographs with over 90% of
respondents agreeing that radiographs are ‘useful’ and
over half the parents perceiving dental radiographs as
‘good’ and ‘safe’ (Fig. 1).
The majority of respondents (44%) answered ‘I do
not know’ to knowledge based questions and 41%
responded correctly. Only a small proportion of
respondents (15%) answered incorrectly. The majority
of respondents were aware that exposure from a den-
tal radiograph was too small to put their child/ren at
any significant harm (58.6%), whereas most were not
aware that radiation exposure from the environment
is higher than radiation from dental radiographs
(75.6%) (Fig. 2).
Parental education by dentist regarding risks and
importance of dental radiographs
Of those respondents where parents accompanied
their child and radiographs had been taken, 63.6%
felt that the risks of dental radiographs were not
explained to them, but 90.3% said that the dentist
explained the reasons for taking dental radiographs.
Parents with children who have had previous dental
radiographs were more likely to perceive dental radio-
graphs as ‘useful’ (p = 0.026), ‘pleasant’ (p = 0.003)
and ‘good’ (p = 0.001). Parents with children who
visited the dentist regularly (every six months) were
also more likely to perceive that the benefits out-
weighed the risks (p = 0.025) (Table 2).
A higher level of parental radiographic knowledge
was associated with a higher level of formal education
and having children who have had previous dental
radiographs (p = 0.000, p = 0.028) (Table 3).
Parents with high levels of knowledge about radio-
graphs stated that they thought dental radiographs
were safe (p = 0.011) and beneficial (p = 0.000). Con-
versely, parents who answered the knowledge-based
questions incorrectly perceived radiographs as being
‘harmful’ (p = 0.002), ‘useless’ (p = 0.02) and ‘bad’
(p = 0.002) (Table 4). Interestingly,
admitted to lacking knowledge about radiographs (i.e.
answered ‘don’t know’) perceived them as safe (p =
0.003) and beneficial (p = 0.000) (Table 4).
Table 1. Demographic data
Highest level of education Regularity of dental visitsType of dentistAccompany
Every 6 months
Once a year
83 27.02 yearly or <
© 2013 Australian Dental Association165
Knowledge and attitudes towards dental radiography
Having the risks and reasons for dental radiographs
explained by the dentist positively influenced knowl-
edge (p = 0.005, p = 0.005), and encouraged parents
to view radiographs as beneficial (p = 0.007, p =
0.000). In addition, an explanation of the reasons for
dental radiographs was also statistically associated
Safe Useful PleasantGood
I believe dental X-rays on my child/ren are:
Fig. 1 Attitudes of parents towards dental radiographs on their child/ren.
exposure (e.g. chest X-ray)
is higher than radia?on
from dental X-rays
A lead apron will totally
protect children against
possible radia?on damage
Exposure from a dental
X-ray is too small to put
my child at any significant
Children are at a higher
risk of harm from X-rays
exposure (e.g. the sun) is
higher than radia?on from
Fig. 2 Responses to questions assessing radiation knowledge.
Table 2. Association between each component of attitude and associated factors using the Pearson’s chi-squared
Level of parental educationRegularity of dental
Type of dentist
(sds or pvt)
had X-rays before
*p ?0.05 indicates significance.
166© 2013 Australian Dental Association
R Chiri et al.
(p = 0.004) and ‘good’ (p = 0.001) (Table 5).
Regularity of dental visits by the parent, type of
dental service, and whether parent accompanied their
child/ren during the dental visit were found to have
no significant associations with attitude or knowledge
A key insight gained from this study is that while
knowledge about dental radiographs is low, parents
have a positive attitude towards radiographs. This
suggests that attitude is not primarily derived from
knowledge. Attitudes develop over time and are orga-
nized around three main types of beliefs:19(1) descrip-
tive beliefs – these are based on direct experiences and
are of most value; (2) inferential beliefs – beliefs based
on an inference process, whereby a belief is inferred
from other beliefs; (3) informational beliefs – these are
based on information derived
This study found that descriptive beliefs, based on
parents’ experiences with radiographs taken for their
children, may have shaped parental attitudes. Fishbein
and Ajzen found that the more positive a person’s
experience is, the more positive beliefs he or she will
Furthermore, as a person forms a belief
around something,an attitude
This study indicated that parents who participated
in the survey have had positive experiences when
radiographs have been taken, and these previous expe-
riences have impacted on the parental attitudes. For
example, parents with children who have had previ-
ous dental radiographs and parents who have the per-
ception that radiographs are ‘good’ and ‘useful’ were
significantly associated with each other. However, this
raises the question of how else does the dentist impact
on parental attitudes? One can infer that the discus-
sion the dentist has with the parents may have influ-
enced their attitude. This is supported by the results,
whereby parents who believed the importance of den-
tal radiographs were explained to them were signifi-
cantly associated with the perception that radiographs
were ‘useful’ and ‘good’ (p = 0.004, p = 0.001), and
they believed the benefits of the radiographs outweigh
the risks (p = 0.000). This implies that the dentist had
a large role to play in shaping parental attitudes.
While the majority of parents had the importance
of dental radiographs explained to them (90.3%), sig-
nificantly fewer parents reported that they had been
informed of the radiation risks (39.7%). This finding
is consistent with other studies, as both Ludwig and
Table 3. Association between knowledge and associated factors using the Pearson’s chi-squared test
Level of parental
Type of dentist
(school dental service
had X-rays before
*p ?0.05 indicates significance.
Table 4. Associations between knowledge and each
component of attitude using the Pearson’s chi-squared
SafeUseful PleasantGood Benefits
*p ?0.05 indicates significance.
Table 5. Association between knowledge and attitude with whether the dentist explains the risks and importance
(using the Pearson’s chi-squared test)
SafeUsefulPleasantGood BenefitsCorrectNot correct Don’t know
Dentist explains the risks of dental
radiographs for children
Dentist explains the importance of
dental radiographs for children
0.32 0.1040.104 0.160.007*0.005* 0.213 0.000*
0.2360.004* 0.480.001* 0.000*0.005*0.6670.002*
*p ?0.05 indicates significance.
© 2013 Australian Dental Association167
Knowledge and attitudes towards dental radiography
Turner13and Lee et al.20reported that most people
are uninformed about the hazards of radiation before
medical imaging. This may be due to either the lack
of an explanation or poor information retention and
it does not explicitly imply that the information on
radiography was not being provided. Reassuringly
explained to them also agreed that the benefits of the
radiographs outweigh the risks (p = 0.007).
There are several methods to effectively communi-
cate radiation risk and address parents’ concerns. One
such method is to compare radiation exposure from
radiographic procedures with the background equiva-
lent radiation time.21Given that natural background
radiation in Australia is 2 mSv annually, routine non-
digital bitewing radiographs give an effective dose of
0.002 mSv which is equivalent to 8.8 hours of radia-
tion exposure from nature.22,23Other approaches
include comparison with typical doses from air travel,
doses from other medical imaging procedures such as
a chest radiograph or by comparison with safety levels
prescribed for occupational exposures.24
The above methods provide a comparison only and
they do not reflect radiation risk per se. However,
these risks are theoretic; epidemiological research has
been unable to establish that there are effects of statis-
tical significance at doses below a few tens of millisie-
verts.23Dentists need to assure patients that they are
committed to obtaining excellent clinical results with
the lowest possible radiation risk, and that the poten-
tial benefits of modern medical imaging procedures
almost always far outweigh the associated risks.
With regards to parental knowledge of radiography,
many parents were unsure of the answers (44%), with
a much lower percentage of respondents answering
questions incorrectly (16%). This suggests a lack of
provision of information rather than misinformation
about dental radiography. Ludwig and Turner found
similar findings and they concluded that while the
public understand the harmful effects from the sun,
knowledge on the effects of radiation from medical
testing is very limited.20Baumann et al.14and Larson
et al.25also found that with regards to CT scans,
knowledge of radiation exposure and risks was
Over half of the respondents (58.6%) knew that
‘exposure from a dental X-ray is too small to put their
child at any significant harm’. This is closely compara-
ble to Ludwig and Turner’s findings that 63% of
responders seldom or never worried about radiation
exposure when having imaging procedures,20
Busey’s et al. findings whereby 98% of respondents
were not worried about the radiation from a CT scan.15
The limitations of this study were primarily con-
cerned with the population sampling method and the
low response rate. As the schools were chosen for
convenience from the Perth metropolitan area, the
sample is not an accurate representation of the general
population. A reasonable proportion of the Western
Australian population reside in rural and remote
areas26and this population was not sampled. There
was also a skewed distribution of socioeconomic sta-
tus within the study due to the sampling method and
this made correlation of this variable unreliable. Fur-
thermore, over half the respondents were university
educated and approximately 60% had experience of
dental radiographs. This skewed demographic may
have affected the results and therefore the relatively
positive attitudes towards dental radiographs found in
this population may not extend to the general popula-
tion. The low response rate may have been improved
if direct communication was made with the parents
(e.g. an announcement made at an assembly) and fol-
low-up reminders had been placed in newsletters. It is
unknown how many children were giving their par-
ents the newsletter or how many parents read the
Furthermore, it would be useful for further research
to investigate parents’ sources of knowledge, or what
parents believe the risks are as these were not investi-
gated in this study. It is also unknown whether par-
ents are aware of the varying radiation exposure from
different types of images.
In conclusion, most parents had a positive attitude
towards dental radiographs although they had limited
knowledge about radiography. This study emphasizes
the importance of providing accurate and appropriate
information so patients and parents have a better
knowledge and understanding of dental radiographs.
It is imperative for dental health professionals to
understand their role in shaping positive attitudes
towards dental radiographs.
The authors acknowledge Drs Alana Ang, Anabel
Chan, Damini Chawla, Khaled Chiri and Millicent
Taylor for their input in fabricating the questionnaire
and collecting the data, and Dr Lara Andrews for her
contribution towards the introduction. We would also
like to acknowledge Dr Bernard Koong and Dr Peter
Readman for their valuable contributions towards
reviewing the appropriateness of the questionnaire,
and the Perth metropolitan primary schools that par-
ticipated in this study on a voluntary basis.
1. Abbott P. Are dental radiographs safe? Aust Dent J 2000;
2. Turpin D. British Orthodontic Society revises guidelines for clini-
cal radiography. Am J Orthod Dentofacial Orthop 2008;1:1–2.
168 © 2013 Australian Dental Association
R Chiri et al.
3. Looe HK, Pfaffenberger A, Chofor N, et al. Radiation exposure
to children in intraoral dental radiology. Radiat Prot Dosimetry
4. Espelid I, Mejare I, Weerheijm K. EAPD guidelines for use of
radiographs in children. Eur J Paediatr Dent 2003;1:40–48.
5. American Dental Association. Dental radiographs: a diagnostic
tool. J Am Dent Assoc 2006;137:1472.
6. Kim HI, Mupparapu M. Dental radiographic guidelines: a
review. Quintessence Int 2009;40:389–398.
7. Ludlow J, Davies-Ludlow L, White S. Patient risk related to
common dental radiographic examinations: the impact of 2007
International Commission on Radiological Protection recom-
mendations regarding dose calculation. J Am Dent Assoc
8. Memon A, Godward S, Williams D, Siddique I, Al-Saleh K.
Dental X-rays and the risk of thyroid cancer: a case-control
study. Acta Oncol 2010;49:447–453.
9. Claus EB, Calvocoressi L, Bondy ML, Schildkraut JM, Wiemels
JL, Wrensch M. Dental x-rays and risk of meningioma. Cancer
10. Preston-Martin S, Thomas DC, White SC, Cohen D. Prior
exposure to medical and dental X-rays related to tumors of the
parotid gland. J Natl Cancer Inst 1988;80:943–949.
11. Preston-Martin S, White SC. Brain and salivary gland tumors
related to prior dental radiography: implications for current
practice. J Am Dent Assoc 1990;120:151–158.
12. Rassin M, Granat P, Berger M, Silner D. Attitude and knowl-
edge of physicians and nurses about ionising radiation. J Radiol
13. Lee C, Haims A, Monico E, Brink J, Forman H. Diagnostic CT
scans: assessment of patient, physician, and radiologist aware-
ness of radiation dose and possible risks. Radiology 2004;231:
14. Baumann B, Chen E, Mills A, et al. Patient perceptions
of computed tomographic imaging and their understanding
of radiation risk and exposure. Ann Emerg Med 2011;58:
15. Busey J, Soine L, Yager J, Caldwell J, Shuman W. Patient
knowledge and perceptions about radiation from diagnostic
imaging. Radiological Society of North America 2011 Scientific
Assembly and Annual Meeting. 27 November – 2 December
2011. Chicago, Illinois, USA.
16. Ajzen I. The theory of planned behavior. Organ Behav Hum
Decis Process 1991;50:179–211.
17. Ajzen I. Constructing a TpB Questionnaire: conceptual and
methodological considerations. 2002 (revised 2006). URL:
Accessed April 2009.
18. Australian Bureau of Statistics. Census of Population and Hous-
ing. Australia. Canberra: Socio-Economic Indexes for Areas
19. Fishbein M, Ajzen I. Belief, attitude, intention, and behavior:
an introduction to theory and research. Reading: Addison-Wes-
20. Ludwig RL, Turner LW. Effective patient education in medical
imaging: public perceptions of radiation exposure. J Allied
approach. J Nucl Med Technol 2001;29:156–158.
W.Communicating radiation exposure:a simple
22. White S. Assessment of radiation risk from dental radiography.
Dentomaxillofac Radiol 1992;21:118–126.
23. Australian Radiation Protection and Nuclear Safety Agency.
Code of Practice and Safety Guide for Radiation Protection in
Dentistry. Australian Government, 2005.
24. Dauer LT, Thornton RH, Hay JL, Balter R, Williamson MJ,
Germain JS. Fears, feelings, and facts: interactively communi-
cating benefits and risks of medical radiation with patients.
AJR Am J Roentgenol 2011;196:756–761.
25. Larson DB, Rader SB, Forman HP, Fenton LZ. Informing par-
ents about CT radiation exposure in children: it’s ok to tell
them. AJR Am J Roentgenol 2007;189:271–275.
26. Steele L, Pacza T, Tennant M. Rural and remote oral health,
problems and models for improvement: a Western Australian
perspective. Aust J Rural Health 2000;8:22–28.
Address for correspondence:
Winthrop Professor Paul Abbott
School of Dentistry
The University of Western Australia
17 Monash Avenue
Nedlands WA 6009
© 2013 Australian Dental Association169
Knowledge and attitudes towards dental radiography