Examiner calibration in caries detection for populations and settings where in vivo calibration is not practical.

AIM: to compare two methods of in vitro examiner calibration in populations and settings where clinical (in vivo) calibration is not practical. METHODS: Study design was cross-sectional and fully-crossed. The units of analysis were 880 tooth surfaces, from ten children ages 3 to 4 years. The study had three data components: (1) Examiner training and calibration using the International Caries Detection and Assessment System (ICDAS) e-Learning programme (2) In vivo community-based visual examination and (3) Intra-oral digital photographs of the same tooth surfaces from the in vivo visual examination. Kappa and weighted kappa scores were used to study reliability estimates. Systematic differences in caries assessments were determined using the Stuart Maxwell test. Data were analysed using STATA 13.1 and SAS 9.2. RESULTS: Weighted kappa scores for the in vivo component ranged from 0.50 to 0.66 and from 0.64-0.74, for inter- and intraexaminer reliability, respectively. Caries lesions detected in vivo were also detected on photographs, albeit with more false positives when using photographs. For example, of 46 tooth surfaces assessed as being sound in the in vivo examination, 22 (48%) of these were assessed as having caries when photographs were used as the diagnostic method. CONCLUSIONS: From this research it appears that good quality photographs alone may be used for training and calibration among challenging populations or settings without adversely affecting data quality.

Child oral health in migrant families: A cross-sectional study of caries in 1-4 year old children from migrant backgrounds residing in Melbourne, Australia.

UNLABELLED: Early Childhood Caries (ECC) is the most common, preventable disease of childhood. It can affect children's health and wellbeing and children from migrant families may be at greater risk of developing ECC. OBJECTIVE: To describe ECC in children from migrant families, and explore possible influences. BASIC RESEARCH DESIGN: Cross-sectional analysis of caries data collected as baseline data for an oral health promotion study. PARTICIPANTS: The analysis sample included 630 1-4 year-old children clustered within 481 Iraqi, Lebanese and Pakistani families in Melbourne, Australia. METHOD: Child participants received a community-based visual dental examination. Parents completed a self-administered questionnaire on demographics, ethnicity, and oral health knowledge, behaviour and attitudes. MAIN OUTCOME MEASURE: Child caries experience. Bivariate associations between oral health behaviours and ethnicity were tested for significance using chi-square. Multivariate logistic regression analyses were performed to identify associations with ECC, adjusting for demographic variables and accounting for clustering by family. RESULTS: Overall, 34% of children in the sample experienced caries (both non-cavitated and cavitated). For all caries lesions, parent' length of residence in Australia, consumption of sweet drinks and parental education remained as independent predictors of child caries experience. Adding sugar to drinks was an additional risk factor for cavitation. Ethnicity was associated with some individual oral health behaviours suggesting cultural influences on health, however the relationship was not independent of other predictors. CONCLUSION: Culturally competent oral health promotion interventions should aim to support migrant families with young children, and focus on reducing sweet drink consumption.

Choosing foods for infants: a qualitative study of the factors that influence mothers.

BACKGROUND: Examining the experiences of parents making food choices for infants is important because ultimately this influences what infants eat. Infancy is a critical period when food preferences and eating behaviour begin to develop, shaping dietary patterns, growth and health outcomes. There is limited evidence regarding what or why foods are chosen for infants. OBJECTIVE: To describe the experiences of mothers making food choices for their infant children. METHODS: Semi-structured interviews with 32 Australian mothers of infants aged four to 15 months from a range of socioeconomic backgrounds. An inductive thematic analysis through a process of constant comparison was conducted on transcribed interviews. RESULTS: Mothers described many ideas and circumstances which influenced food choices they made for infants. Themes were developed which encapsulate how the wider environment and individual circumstances combine to result in the food choices made for infants. Beliefs, values, norms and knowledge were a central influence on choices. Cost, quality and availabilities of various foods were also key factors. Related to this, and combined with inherent factors such as perishability and infant acceptability, fresh fruits and vegetables were often singled out as an easy or difficult choice. Influences of time, parents' capacities, social connections and different information sources were clearly apparent. Finally infants' own preferences and how parents helped infants with learning to eat were also key influences on food choices. CONCLUSIONS: Choosing foods for infants is a complex social practice. An ecological framework depicting the multiple influences on what people eat and sociological theory on food choice regarding the role of 'social structure' and 'human agency' are both applicable to the process of choosing foods for infants. Equity issues may be key regarding the degree to which mothers can choose particular foods for infants (e.g. choosing foods which promote health).

Knowledge, experience and perceptions regarding Molar-Incisor Hypomineralisation (MIH) amongst Australian and Chilean public oral health care practitioners.

BACKGROUND: Molar-Incisor Hypomineralisation (MIH) is a prevalent developmental defect of tooth enamel associated with a high burden of disease. The present study aimed to survey Australian and Chilean oral health care practitioners (OHCPs) working in public dental facilities and to compare their knowledge, clinical experience and perceptions about MIH. Findings would give insights about how current knowledge has penetrated into OHCPs working into the public systems. METHODS: A mixed-mode survey regarding MIH was carried out amongst Australian and Chilean OHCPs from the public sector. The survey required responses to questions regarding sociodemographics, clinical experience, perceptions, clinical management and preferences for further training. The level of knowledge regarding MIH was determined by Delphi methods for consensus. Data analysis utilised Chi-square, linear and logistic regression models using SPSS Ver. 22.0. RESULTS: The majority of respondents had observed MIH in their patients (88.6 %) and the level of knowledge regarding MIH was high in Australian participants (p = 0.03). Australian respondents felt more confident when diagnosing (OR 8.80, 95 % CI 2.49-31.16) and treating MIH-affected children (OR 4.56, 95 % CI 2.16-9.76) compared to Chilean respondents. Oral health therapists reported higher levels of confidence than Australian general dental practitioners when providing treatment to children with MIH (OR 7.53; 95 % CI 1.95-29.07). CONCLUSIONS: Continuing to update clinical guidelines may help practitioners increase their understanding when diagnosing and treating MIH-affected children. Dissemination of information and awareness regarding MIH is necessary in public clinics, and in particular Chilean general dental practitioners should be alerted to these factors.

Evaluation of a capacity building clinical educational model for oral health clinicians treating very young children.

OBJECTIVE: There are significant levels of dental caries in Australian school-aged children, with children aged five years having a mean dmft of 1.3. It has also been identified that, in general, oral health clinicians lack confidence to treat very young children and this study aimed to increase capacity of public sector oral health clinicians to treat preschool children. BASIC RESEARCH DESIGN: An educational program was developed, implemented and evaluated for its capability to increase the confidence and knowledge of oral health clinicians and dental assistants in providing oral care for children aged 12 months to 5 years. RESULTS: In 2011 and 2012, the course was delivered to 36 clinicians (22 dentists, 12 dental therapists, and two oral health therapists) and showed increases in their confidence and knowledge for participants when providing dental procedures to preschool children. CONCLUSIONS: The educational program that was developed and implemented has met its objective of increasing the knowledge and confidence of practicing oral health clinicians and dental assistants in the management of preschool children. Strategies to further enhance the outcomes of this educational program have been proposed.

Applying Social Practice Theory to Explore Australian Preschool Children's Oral Health.

INTRODUCTION: Despite substantial research and provision of dental care, significant morbidity remains for children's oral health. Guided by social practice theory (SPT), this research moves away from the often-ineffective focus on changing individual behavior to rethinking the centrality of the social world in promoting or undermining oral health outcomes. We define social practice as a routinized relational activity linking and integrating certain elements (competence, materials, and meanings) into the performance of a practice that is reproduced across time and space. OBJECTIVE: To investigate oral health in preschool children in Perth, Western Australia, using social practice theory. METHODS: With no definitive methodology for investigating SPT, we chose focused ethnography as a problem-focused, context-specific approach using mainly interviews to investigate participants' experience caring for their children's oral health. The focus of analysis was the practice of oral health care, not individual behavior, where themes identified from participants' transcripts were organized into categories of elements and performance. RESULTS: Eleven parents, all of whom were married or partnered, were interviewed in 2021. Findings identified social practices relevant to oral health within parenting and family relations linked to routine daily activities, including shopping, consumption of food and beverages, and toothbrushing. Oral health literacy was reflected in integrating competence, materials, and meanings into performing oral health care, notably preferences for children to drink water over sugary beverages and information often being sourced from social media and mothers' groups rather than health providers. CONCLUSION: Focusing on social practices as the unit of analysis offers a more layered understanding of elements in young children's oral health care that can indicate where the problem may lie. Findings provide an opportunity to consider future research and policy directions in children's oral health. KNOWLEDGE TRANSFER STATEMENT: Examining social practices related to young children's oral health care identifies parents/carers' knowledge about, for example, toothbrushing, the resources required, and why toothbrushing is important. Analyzing these separate elements can reveal both enablers and barriers to oral health care. This provides researchers, clinicians and policymakers an opportunity to focus on not changing individual behavior but understanding how social context impacts parents/carers' capacity to make optimum decisions around young children's oral health.

Fit for Purpose? The Suitability of Oral Health Outcome Measures to Inform Policy.

KNOWLEDGE TRANSFER STATEMENT: Oral health research and program evaluation should consider alternative outcome measures for population oral health other than the DMFT index.

Oral health attitudes and behaviours of final-year dental students.

OBJECTIVES: The objectives of this study of final-year dental students in 10 classes (1997, 2001-2009) were to examine their self-reported oral health attitudes and behaviours and describe any trends in these attributes. PARTICIPANTS AND METHODS: Students were surveyed in final semester via an anonymous questionnaire (34 behaviour questions; eight attitude statements). Distributions, trends over time and attitude-behaviour associations were examined. RESULTS: Of 583 students, 459 responded (79%). All tooth-brushed with fluoride toothpaste; 80% brushed ≥2/day. Overall, 85% flossed; over time flossing behaviour increased significantly (P < 0.05), and those flossing 1-2/day increased (P < 0.005). Over time, significant decreases occurred in those taught toothbrushing (P < 0.001) and flossing (P < 0.05), and in use of mouth rinses (P < 0.05) and tooth cleansing sticks/picks (P < 0.001). Almost all (96%) had received a dental examination; 77% attended a dentist 1-3/year. Between-meal snacking was common (84%); 71% chewed gum. Although 18% had ever smoked, 5% currently smoked. Most strongly agreed they expected to keep most of their teeth for all their life (76%); their future needs for fillings would be minimal (61%); smoking could adversely affect their teeth or gums (85%); and regular dental attendance was important for their dental health (51%). Congruent attitudes and behaviours favouring oral health were widely held concerning dental attendance, flossing and smoking. CONCLUSIONS: Final-year dental students showed well established, favourable oral hygiene attitudes and behaviours, with evidence to suggest this knowledge was developed whilst in dental school. Despite many ceasing smoking, 5% still smoked. All dental students should receive training in motivational counselling and tobacco cessation to ensure this is included in patient care.

Cost-effectiveness analysis of silver diamine fluoride to divert dental general anaesthesia compared to standard care.

BACKGROUND: The aim is to perform a model-based cost-effectiveness analysis of a silver diamine fluoride (SDF) protocol intervention to divert dental general anaesthesia (DGA) among Victorian children aged 2-10 years. METHODS: Data inputs were based on an Australian single-cohort 2017/18 study. Intervention costs for standard care were derived from two subgroups of children: (1) children who received standard care without DGA, and (2) children who received standard care with DGA. Two scenarios were modelled due to limited post-follow-up data: (1) children receiving SDF had standard care without DGA (base-case scenario), and (2) children receiving SDF did not receive standard care without DGA (alternative scenario). A simple decision-tree model with probabilistic sensitivity analysis (PSA) estimated the incremental costs per diverted DGA. RESULTS: The probability of children requiring specialist referral and offered SDF, but the primary carer opted for DGA is 0.124 (SD 0.034), and the probability of children requiring DGA in standard care is 0.346 (SD 0.036). For both the base-case and alternative scenario, the incremental cost-effectiveness ratio outcome is dominant and their cost-effectiveness being either 74.8% or 100% respectively. CONCLUSIONS: The SDF protocol intervention is cost-effective dental caries management option for young children where referral for DGA is considered. © 2022 Australian Dental Association.

Understanding the building blocks of the paediatric dentistry curriculum for undergraduate students in an Australian University.

PURPOSE: To investigate the attitude of final-year dental students towards their paediatric dentistry training and their confidence in treating child patients. METHODS: A 55-item questionnaire was distributed online and physically to the final-year BDSc (Hons) students at The University of  Queensland (Australia). The questionnaire consisted of four parts including theoretical knowledge, clinical observational experience, preclinical training and clinical training in paediatric dentistry. Self-reported confidence was recorded using five-point Likert scale questions ranging from 'not confident at all' to 'completely confident', which were allocated the numbers 1-5, respectively. Jamovi and GraphPad Prism were used for data analysis and creation of graphs. RESULTS: A total of 47 students completed the questionnaire giving a response rate of 77%. Approximately two-thirds of participants had previous experience working with children and 70% had observed a practitioner providing paediatric dental treatment. The students reported the lowest level of clinical confidence for pulp therapy (M = 2.32; SD = 1.08). The clinical confidence in dental trauma management was also reported to be low (M = 2.50; SD = 1.15). The clinical administration of local anaesthetic (LA) had the highest level of confidence (M = 3.95; SD = 1.03). The students reported that they were highly confident in the theoretical knowledge of behaviour guidance techniques (M = 3.64; SD = 0.97) and preclinical training involving examination, treatment planning and preventative procedures (M = 4.33, SD = 0.67). CONCLUSION: This study showed that students reported low levels of confidence in pulp therapies and trauma management in children as compared to other aspects of paediatric dentistry. Students indicated the need for more preclinical and clinical training sessions, as well as more opportunities to perform a wider variety of treatments on paediatric patients.

Specialist Networks Influence Clinician Willingness to Treat Individuals with Special Needs.

BACKGROUND: The South Australian Dental Service's Special Needs Network was established to support oral health professionals working within their statewide government-funded dental service to treat patients with special needs. This study aimed to investigate how a structured network relationship with specialists in special needs dentistry influenced the willingness of dentists to treat this group of patients. METHODS: Semi-structured interviews were used to explore the views of specialists and dentists involved in the South Australian Dental Service's Special Needs Network. Inductive thematic analysis identified emerging themes enabling completion of a SWOT (strengths, weaknesses, opportunities, threats) analysis. RESULTS: Dentists felt that a strength of the Network was a greater sense of collegiality, particularly for those working in rural areas. Although the inability to get immediate advice was seen as a weakness, dentists felt a more structured relationship with specialists improved communication pathways and resulted in more timely care. The aging workforce, systemic barriers in the public dental system, such as productivity pressures and infrastructure, and the lack of support from other health professionals were seen as ongoing barriers and threats. Regardless, dentists identified the use of telehealth and visiting specialists as future opportunities. Specialists felt that the Network was a valuable resource but were skeptical about its effectiveness, feeling that a limitation was the ability of dentists to recognize the complexity of cases. CONCLUSIONS: Ongoing support from and communication with specialists in special needs dentistry through a structured network improved the perceived ability and willingness of dentists to treat patients with special needs. KNOWLEDGE TRANSFER STATEMENT: This research suggests that providing support to dentists through a hub-and-spoke network that facilitates additional training, professional interaction, and improved communication with specialists in special needs dentistry may help overcome some of the current barriers to access to care experienced by individuals with special needs, particularly those associated with the willingness and capability of clinicians treat them.

Dental procedures in children with or without intellectual disability and autism spectrum disorder in a hospital setting.

BACKGROUND: This population-based cohort study investigated dental procedures in the hospital setting in Western Australian children with or without intellectual disability (ID) and/or autism spectrum disorder (ASD) aged up to 18 years. Considering previously reported disparities in dental disease between Indigenous and non-Indigenous Australian children, this study also investigated the effect of Indigenous status on dental procedures. METHODS: Data on Western Australian live births from 1983 to 2010 from the Midwives Notification System were linked to the Intellectual Disability Exploring Answers database and the Hospital Morbidity Data collection. Primary admissions for relevant dental diagnoses were identified, and treatment procedures for dental hospitalization were investigated. Descriptive statistics and Pearson's chi-squared test of independence were used for analysis. RESULTS: Overall, 76 065 episodes of dental hospitalization were recorded. Amongst children with ID and/or ASD, Indigenous children experienced more extractions and fewer restorations (68.7% and 16.2%) compared to non-Indigenous children (51.5% and 25.9%). After 6 years, extraction occurred less often in children with ID and/or ASD than in those without, where most surgical dental extractions were in the age group of 13-18 years. CONCLUSIONS: This study indicates a need for further improvements in access to dental services and the quality of care provided in hospitals for children with ID/ASD. There is also concern that more vulnerable Indigenous and all disadvantaged children are receiving an inadequate level of dental services resulting in more emergency dental hospitalization and invasive treatment.

Dental Restrictions to Clinical Practice during the COVID-19 Pandemic: An Australian Perspective.

KNOWLEDGE TRANSFER STATEMENT: The reportedly low COVID-19 transmission occurring in dental settings highlight achievements made by the dental profession. There are valid reasons to reconsider risk-based essential oral healthcare during the COVID-19 pandemic.

Perspectives of the public dental workforce on the dental management of people with special needs.

BACKGROUND: People with special health care needs continue to have difficulties accessing regular dental care partly due to oral health professionals feeling they lack the knowledge and experience to provide treatment to these individuals. METHODS: Qualitative interviews and focus groups provided an insight into the types and nature of supports that oral health professionals working in the Australian public dental system desired and felt may improve their willingness and/or ability to treat patients with special needs. RESULTS: Although participants did not identify one group of patients with special needs that were more difficult to treat, they did report a feeling of being unsupported. Clinicians felt that improved training and access to ongoing education in Special Needs Dentistry, opportunities for greater support from specialists or other health professionals, either through networking or other media such as telehealth, and fostering a more supportive clinical environment, particularly in relation to appointment lengths and productivity pressures, may improve their willingness and ability to treat patients with special needs. CONCLUSIONS: Additional support, in the form of greater interaction with specialists and reduced time and productivity pressures, may improve the willingness of oral health professionals in the public dental system to treat patients with special needs.

"Setting the scene in early childhood" - an MID approach for life.

This article presents a discussion paper for both consideration and implementation of Minimal Intervention Dentistry (MID) principles by the general dental practitioner. It argues that if these concepts can be adopted in early childhood by both the community and the profession, "Teeth for Life" can become a reality for all. Oral Health promoting behaviours can be nurtured and supported from infancy and developed into everyday living practice for a lifetime thereby maintaining an optimal quality of life. MID techniques have become more refined and supported by scientific research in the recent times and should be considered an essential clinical guideline for the future disease management.

The impact of MIH/HSPM on the carious lesion severity of schoolchildren from Talca, Chile.

OBJECTIVES: Decamarcated hypomineralised lesions of enamel include those developmental defects that are related to MIH, HSPM or any other demarcated opacities of systemic origin. The present study's aims are to determine MIH/HSPM prevalence, caries lesion severity and their association in a sample of 6-12-year-old schoolchildren from Talca, Chile. METHODS: The sample (N = 577) was derived from selected primary schools in urban Talca. A full dental examination was performed at the school by one calibrated examiner. Socio-demographic data and caries experience (DMFT/dmft/merged ICDAS II and PUFA/pufa) were measured in primary and permanent dentitions. MIH/HSPM was assessed using a modified EAPD protocol. Binary and multilevel binary regression analyses were calculated. RESULTS: The prevalence of MIH/HSPM or other demarcated hypomineralised lesions was 24.4%. MIH and HSPM was 15.8% and 5%, respectively. The presence of HSPM predicted MIH (OR 3.7; 95% CI 1.65-8.15) when corrected by demographic factors. Of the children examined, 35% had no teeth with a score greater than ICDASII Code 0 and 26% had one or more severe carious lesions (Code C). Toothwise multilevel binary regression analyses demonstrated that teeth with MIH/HSPM (OR 3.70) from low-SES children (OR 1.93) had higher odds for carious lesions compared with defect-free teeth from high-SES participants. CONCLUSIONS: MIH/HSPM lesions were associated with carious lesion occurrence and increased disease severity. The prevalence of MIH and HSPM was similar to other reports. Increased awareness of MIH/HSPM in schools and primary health settings may help to identify children at risk early.

Temporal development of the oral microbiome and prediction of early childhood caries.

Human microbiomes are predicted to assemble in a reproducible and ordered manner yet there is limited knowledge on the development of the complex bacterial communities that constitute the oral microbiome. The oral microbiome plays major roles in many oral diseases including early childhood caries (ECC), which afflicts up to 70% of children in some countries. Saliva contains oral bacteria that are indicative of the whole oral microbiome and may have the ability to reflect the dysbiosis in supragingival plaque communities that initiates the clinical manifestations of ECC. The aim of this study was to determine the assembly of the oral microbiome during the first four years of life and compare it with the clinical development of ECC. The oral microbiomes of 134 children enrolled in a birth cohort study were determined at six ages between two months and four years-of-age and their mother's oral microbiome was determined at a single time point. We identified and quantified 356 operational taxonomic units (OTUs) of bacteria in saliva by sequencing the V4 region of the bacterial 16S RNA genes. Bacterial alpha diversity increased from a mean of 31 OTUs in the saliva of infants at 1.9 months-of-age to 84 OTUs at 39 months-of-age. The oral microbiome showed a distinct shift in composition as the children matured. The microbiome data were compared with the clinical development of ECC in the cohort at 39, 48, and 60 months-of-age as determined by ICDAS-II assessment. Streptococcus mutans was the most discriminatory oral bacterial species between health and current disease, with an increased abundance in disease. Overall our study demonstrates an ordered temporal development of the oral microbiome, describes a limited core oral microbiome and indicates that saliva testing of infants may help predict ECC risk.

Carious lesion severity and demarcated hypomineralized lesions of tooth enamel in schoolchildren from Melbourne, Australia.

BACKGROUND: Developmental hypomineralized lesions of enamel (DHL) may represent a significant caries-risk factor. The aim of this study was to determine the association between carious lesion severity and DHL in 6- to 12-year-old schoolchildren from Melbourne, Australia. METHODS: The sample was derived from randomly selected schools in inner Melbourne. A full dental examination was performed at the school. Socio-demographic data, caries experience (DMFT/dmft/ICDAS II) and the consequences of untreated carious lesions (PUFA/pufa) were measured. DHL, molar incisor hypomineralization (MIH) and hypomineralized second primary molar (HSPM) presence were assessed using the European Academy of Paediatric Dentistry (EAPD) criteria. RESULTS: Of the children examined (n = 327), 26.9% had DHL. The prevalence of MIH and HSPM was 14.7% and 8%, respectively. Almost 20% of children had severe carious lesions (ICDAS 5 & 6) in at least one permanent or primary tooth. Ordinal regression analyses indicated that DHL (OR = 2.17; 95% CI: 1.35-3.49) and being born overseas (OR = 2.59, 95% CI: 1.66-4.06) increased the likelihood of severe carious lesions. CONCLUSIONS: One of four children had DHL. DHL-affected children had an increased likelihood of presenting untreated severe carious lesions compared with DHL-free children.

Profile of the oral health among ambulant older Greek and Italian migrants living in Melbourne.

BACKGROUND: Over the last 50 years an increasing number of migrants have settled in Australia. These immigrants now constitute a large proportion of the Australian population, and some research suggests that they may be at high-risk for oral diseases. METHODS: This paper presents data on the oral health status of a convenience sample of 721 ambulant Greek- (n = 367) and Italian-born (n = 354) adults aged 55 years or older. The volunteer participants were recruited through ethnic social clubs located in Melbourne, Australia. RESULTS: The sample was largely a dentate one (83.6 per cent); with a mean DMFS score of 67.5 (s.d. 37.4). Dentate participants had 13 per cent of their restorative care unmet, and 57.3 per cent needed oral hygiene instruction plus removal of stain and hard deposits on their teeth. Almost 8 per cent required complex periodontal therapy and 30 per cent of those fully edentulous were in need of full dentures. CONCLUSIONS: Comparing these findings with existing data on oral health of older adults in Australia, the participants in this study appear to have lower DMFS scores and a higher prevalence of gingivitis, but less need for complex periodontal treatment. Inequalities were apparent in the proportion of unmet restorative and prosthetics needs.

A cross sectional and longitudinal study of endodontic and periapical status in an Australian population.

BACKGROUND: This study describes the cross sectional and longitudinal data of endodontic and periapical status of new patients presenting to a major dental hospital, and assesses the relationships between tooth-related variables with apical periodontitis. METHODS: The records of 695 patients were randomly selected and the orthopantomograms of these patients up to 31 October 2014 were reviewed by two endodontists. The periapical status of teeth was recorded using the periapical index. The presence and quality of root fillings and coronal restorations were recorded. Statistical analysis included Fleiss' kappa, Cohen's kappa and logistic regression set at P < 0.05. RESULTS: Of 695 patient records and 16 936 teeth examined, 138 (19.9%) patients or 284 (1.7%) teeth had root fillings and 179 (25.8%) patients or 325 (1.9%) teeth had apical periodontitis. Root fillings and coronal restorations were adequate in 34.6% and 69.4% teeth, respectively. A large proportion (47%) of teeth with apical periodontitis remained unchanged in subsequent orthopantomograms. CONCLUSIONS: There was lower prevalence of root filled teeth or apical periodontitis in the present study compared with international studies. The frequency of adequate root fillings must be considered unacceptably low. Teeth with apical periodontitis may remain quiescent in the absence of caries or restorative breakdown.