Motivational interviewing versus conventional caries prevention strategies in high-caries-risk children and families: a non-randomised trial.

Background This study compared the effectiveness of motivational interviewing (MI) and conventional caries prevention (CCP) for primary (caries increment) and secondary outcomes (caries intensity, gingival health, caregiver-reported oral health-related knowledge, behaviours and attitudes) over 12 months.Methods High-caries-risk children and caregivers received CCP or MI with comprehensive dental care. Fidelity was monitored using MI treatment integrity code 4.2.1. Caries increment, intensity and gingival health were measured at baseline, six and twelve months. Readiness Assessment of Parents Concerning Infant Dental Decay questionnaires recorded oral health-related knowledge, behaviours and attitudes.Results In total, 86 caregiver-child dyads (CCP = 51; MI = 35) were recruited. The mean difference (95% confidence interval [CI]) in caries increment (ΔdICDAS1-6mfs + DICDAS1-6MFS) was significantly higher with MI compared to CCP at six (MI 2.3 [1.2, 3.5] vs CCP 0.6 [0.1, 1.0]; p <0.001) and twelve (MI 4.3 [2.5, 6.0] vs CCP 1.2 [0.6, 1.8]; p <0.001) months. Multivariate analysis with CCP as reference group, odds ratio (95% CI) for new/progressed caries (Δdecayed, missing and filled surface score [permanent] + decayed, missing and filled surface score [primary] >0) at six and twelve months were 18.2 (4.0, 81.7); p <0.001 and 12.6 (3.3, 47.8); p <0.001, respectively. The MI group reported positive behaviours and attitudes.Conclusions CCP was more effective in reducing caries increment when behaviour change technique was incorporated into the preventative strategies as per current paediatric dentistry guidelines.

Fidelity of motivational interviewing with families in high-caries-risk children.

OBJECTIVES: Motivational interviewing (MI) is a promising behavioural intervention for prevention of dental caries in children. Few studies have reported on fidelity of MI delivered in dental settings. The aim of this paper is to explore the fidelity of implementing MI in a clinical dental practice setting, as part of an intervention study investigating caries-preventive effects of MI delivered to high-caries-risk children and their primary caregivers. METHODS: Three oral health therapy clinicians trained in MI (counsellors) provided MI to high-caries-risk children and their primary caregivers. All MI sessions (n = 34) were audio-recorded and analysed using the MI Treatment Integrity code 4.2.1. Qualitative analysis of counsellor self-reflections identified barriers to MI delivery. RESULTS: All counsellors were found to adhere to the MI process and demonstrated fair to good MI proficiency for global scores, with a mean (95% CI) of 3.3 (3.1-3.4) recorded for technical scores and 3.6 (3.5-3.8) for relational scores. The mean (95% CI) per cent complex reflections was 23% (19.4-27.1) and the mean reflection:question ratio was 0.7 (0.6-0.9). No significant differences were observed between counsellors for MI proficiency. Cultural barriers, environmental distractions, participant dental anxiety and counsellor tendency towards prescriptive advice-giving were identified by counsellors as hindrances to effective MI. CONCLUSIONS: Motivational interviewing is a skill which requires multifaceted training, practice and mentoring to meet accepted proficiency thresholds. Monitoring of MI using a validated tool is essential to ensure delivery as intended and accurately attribute outcomes to the intervention. Dental organizations intending to implement MI for caries prevention should be aware of the demands on time and resources required to deliver proficient MI and monitor fidelity.

Medical and dental characteristics of children with chromosome 22q11.2 deletion syndrome at the Royal Children's Hospital, Melbourne.

BACKGROUND: Chromosome 22q11.2 deletion syndrome (22q11.2DS) is a multifaceted syndrome with a variable phenotype. Few studies have described the associated dental characteristics and their relationship with medical co-morbidities; and no Australian data exist. AIM: To determine the clinical manifestations and correlations between oral and medical conditions in children with 22q11.2DS. DESIGN: A retrospective observational study. Children genetically diagnosed with 22q11.2DS at the Royal Children's Hospital Melbourne were selected; their medical and dental characteristics were collated and analysed. RESULTS: The study population (n = 57; mean age 11.5 years, range 2-27 years) experienced a range of medical conditions involving multiple medical systems; of whom 44 (77.2%) had caries experience, 7 (12.3%) developmentally missing teeth, and 31 (54.4%) developmental defects of enamel (DDE). Smaller proportions of primary teeth were affected by DDE in children with congenital heart disease (2.2% vs 9.7%; P = .02), and cardiac surgery (0.2% vs 9%; P = .001). Conversely, children with hypoparathyroidism (n = 2) had significantly higher proportions of primary teeth affected by DDE (27.5% vs 4%; P = .02). CONCLUSIONS: Significant associations existed between medical conditions (congenital heart disease, history of cardiac surgery, and hypoparathyroidism) and primary dentition DDE in children with 22q11.2 DS.

Odontoblast markers and dentine reactions in carious primary molars with and without hypomineralised enamel defects.

BACKGROUND: Wnt/ß-Catenin signalling and DMP1 have key roles in tertiary dentinogenesis. AIM: To compare the relationship between remaining dentine thickness (RDT), tertiary dentine thickness (TDT), ß-catenin and dentine matrix protein 1 (DMP1) in carious second primary molar teeth with normal (SPM) and hypomineralised enamel (HSPM). DESIGN: Extracted carious SPM and HSPM were fixed, sectioned (5 µm) and stained with haematoxylin and eosin or with indirect immunofluorescence for ß-catenin and DMP1. Image analysis was performed to determine RDT, TDT, ß-catenin and DMP1 intensity in the odontoblast layer and dentine-pulp complex. RESULTS: Carious SPM (n = 11; mean RDT = 1536.1 µm) and HSPM (n = 12; mean RDT = 1179.9 µm) had mean TDT 248.6 µm and 518.1 µm, respectively (P = .02). There were no significant differences in intensity values in the odontoblast layer and dentine-pulp complex for ß-catenin and DMP1 for both groups. CONCLUSION: There was no observable variation in Wnt/ß-catenin and DMP1 expression between HSPM and SPM despite a statistically significant twofold increased TDT in HSPM compared with SPM that had similar RDT. Thus, the observed increased TDT in HSPM is more likely due to an earlier onset of repair processes rather than an amplified response to caries.

Final year dental students' self-assessed confidence in general dentistry.

BACKGROUND: Self-assessment is an important introspective skill that dental professionals will utilise throughout their professional career. Its value lies in its ability to help individuals identify areas of strengths and weakness, and subsequently seek further development of professional skills where needed. The aim of this study was to investigate the correlation between self-assessed confidence and the assessment grade of final year dental students based on the professional attributes and competencies of newly qualified dentists outlined by the Australian Dental Council (ADC). METHODS: Ethical approval was obtained prior to distribution of a questionnaire with 45 statements to final year dental students. The survey was created based on the learning outcomes of the ADC guidelines in the domains of "scientific and clinical knowledge" and "patient care." Participants indicated their level of self-assessed confidence by marking "X" on a visual analogue scale (VAS) from zero ("No Confidence") to 10 cm ("Very Confident"). The assessment grade was based on OSCE, viva voce, case report and written paper. RESULTS: A total of 58 (71.6%) dental students participated in the survey. The reported self-assessed confidence over two domains were under "patient care": clinical information gathering 8.92 ± 1.07 cm (range =3.94-10.0 cm: n = 58; 100%), clinical diagnosis and management planning 8.26 ± 1.34 cm (range =0.50-9.95 cm: n = 55; 94.8%), clinical treatment and evaluation, 6.07 ± 1.69 cm (range =0-10.00 cm: n = 55; 94.8%), and "scientific and clinical knowledge": 6.98 ± 1.58 cm (range =0-10.00 cm: n = 58; 100.0%). Within these categories, high confidence was reported for routine dental care (caries management and preventive care) whilst lower confidence was reported for the management of oral medicine and pathologies, dental emergencies, trauma, paediatric dentistry and prosthodontics. Correlation between the assessment grade and the overall score of self-assessed confidence is low positive (r = .225) and not statistically significant (n = 46; P = .132, Spearman'sρ). CONCLUSIONS: The final year dental students appear to have good overall self-assessed confidence in core areas of general dentistry. However, confidence seems to be over-estimated when compared with summative assessment.

Regenerative Endodontic Therapy in the Management of Nonvital Immature Permanent Teeth: A Systematic Review-Outcome Evaluation and Meta-analysis.

INTRODUCTION: Although the protocols in previously published studies appeared to be largely similar, there were inadequate evidence-based guidelines to support a single protocol. Using a meta-analysis, this systematic review aimed to summarize and quantitatively evaluate the outcomes for nonvital immature permanent teeth treated using the regenerative endodontic technique (RET) as well as critically appraise the level and quality of evidence of the existing publications. METHODS: Risk of bias assessment and level of evidence grading were performed on all included studies. Meta-analyses using a random effects model were performed to combine the results of randomized controlled trials. The pooled success rate for each exposure was estimated for each outcome (event rates with 95% confidence intervals). The outcomes of all included studies were summarized. RESULTS: Success rates for tooth survival and resolution of periapical pathosis were excellent; however, results for apical closure and continued root development were inconsistent. There are few well-reported randomized prospective clinical studies. Reporting of long-term outcomes and late-stage effects was sparse. No study evaluated health economic outcomes and improvements to patients' quality of life. CONCLUSIONS: Many knowledge gaps still exist within the studies published. Current published evidence is unable to provide definitive conclusions on the predictability of RET outcomes.

Pulpal status of human primary molars with coexisting caries and physiological root resorption.

AIM: This study sought to investigate the effect of caries, in association with physiological root resorption, on the pulpal status of human primary molars. DESIGN: Fifty-three mandibular primary molars were obtained from children requiring extractions under general anaesthesia. Following extraction, teeth were split longitudinally and placed in Zamboni's fixative. Teeth were categorised according to i) the depth of caries (less than or greater than halfway through dentine thickness) and ii) the degree of physiological root resorption (<33%, 34-66% or >67% of the root length). Ten-micrometre pulp sections were subject to indirect immunofluorescence using a combination of PGP 9.5 (a general neuronal marker), CD45 (a general neuronal marker), and Ulex europaeus agglutinin I (a marker of vascular endothelium). Image analysis was used to determine the percentage area of staining (PAS) for innervation and immune cells. RESULTS: Marked differences were seen between different samples, but there were no significant differences in mean PAS for PGP 9.5 or CD45 according to the degree of caries or extent of physiological root resorption (two-way anova, P > 0.05). CONCLUSION: Findings suggest that even if primary molars are undergoing exfoliation, they show comparable caries-induced changes to teeth without physiological root resorption, thus retaining potential for healing and repair.