Regional Odontodysplasia with Generalised Enamel Defect

Regional odontodysplasia (ROD) is uncommon developmental anomaly, which tends to be localised and involves the ectodermal and mesodermal tooth components. A five-year-old female was referred to Department of Child Dental Health at the Leeds Dental Institute regarding malformed primary teeth. On examination 64, 74, and 72 had localised hypomineralized enamel defect. The crown of 55 was broken down with only the root remaining below the gingival level. 54 has a yellowish brown discolouration with rough irregular surface. The upper anterior teeth show mild enamel opacity. Radiographically, 55 and 54 had thin radioopaque contour, showing poor distinction between the enamel and dentine and the classic feature of a wide pulp chamber. 15, 16, and 17 were developmentally delayed and were displaying the characteristic “ghost appearance.” Comprehensive dental care was done under local anaesthesia and it included extraction of the primary molars affected by ROD, stainless steel crown on 64, and caries prevention program. Fifteen months following the initial assessment the patient’s oral condition remains stable and she is under regular follow-up at the department. Paediatric dentists should be aware of this anomaly as it involves both dentitions and usually requires multidisciplinary care

Knowledge and Awareness of Emergency Medical Physicians on the Management of Traumatic Dental Avulsion at Sultan Qaboos University Hospital

Objective: This study aimed to assess the level of knowledge regarding traumatic dental avulsion management among emergency physicians at Sultan Qaboos University Hospital (SQUH), Muscat, Oman. Methods: A cross-sectional survey-based observational study conducted among emergency physicians at SQUH from August 2021 to October 2021. Data were collected through a standardized and validated questionnaire. Fisher’s exact and Mann-Whitney U tests were used to analyze the data. Results: Eighteen completed questionnaire forms were received, yielding a response rate of 72%. The data revealed that 66.7% of participants had prior knowledge of avulsion management, and 50% had received education on dental trauma. However, 83% of participants did not feel comfortable replanting an avulsed tooth themselves. With regard knowledge level, 45% of the participating physicians demonstrated low knowledge, 22% had moderate knowledge, and 33% showed high knowledge. Thus, 94% of participants were interested in acquiring information about avulsion management. Conclusion: The level of knowledge was significantly associated with receiving dental education and higher clinical grade. As a result, it is crucial to include information about avulsion and its management in both medical undergraduate and post-graduate curricula. Keywords: Avulsion; Replantation Emergency; Knowledge; Dental Education; First Aid

The effect of ozone on progression or regression of artificial caries-like enamel lesions in vitro

Objective: This study investigated the effect of ozone on the progression or regression of artificial caries-like lesions on enamel following pH cycling conditions in vitro. Methods: A randomized, single blind, four legs design was used. 20 full thickness enamel slabs were allocated to each of the four groups which were: Fluoride free toothpaste (control); ozone alone; Reductant/Patient Kit alone and a combination of both ozone/Reductant/Patient Kit. Artificial lesions were created and subjected to the pH cycling regime for a 14 days period. Assessments were carried out before and after the pH cycling on the slabs using the microhardness testing and Quantitative Light-induced Fluorescence (QLF). Results: Statistical significant difference were found in the percentage change of enamel microhardness before and after pH cycling between ozone/Reductant/Patient Kit group and all the other three groups of the study, as well as between Reductant/Patient Kit group and control. There was a statistical significant difference in the change of size and severity of the lesion (ΔQ) between all the three regimes tested and the control with a trend favouring ozone/Reductant/Patient Kit group. Conclusions: In our model, it appeared that ozone treatment alone is not effective in protecting the enamel against demineralisation or promoting remineralisation, unless combined with the Reductant/Patient Kit, which contain high levels of fluoride

Effect of Slow-Release Fluoride Devices and Casein Phosphopeptide/Amorphous Calcium Phosphate Nanocomplexes on Enamel Remineralization in vitro

To investigate the remineralization effect of slow-release fluoride glass devices (SFGD), casein phosphopeptide/amorphous calcium phosphate nanocomplexes (CPP-ACP) and SFGD and CPP-ACP together on enamel pH cycling in vitro. Eighty bovine enamel slabs were allocated to each of 4 groups (20/group): SFGD; CPP-ACP; SFGD + CPP-ACP; control. Baseline surface microhardness (SMH; Knoop number) was measured for all slabs which were then subjected to a pH cycling regime for 10 days, and SMH was then remeasured. The pH cycling regime involved immersion 5 times daily (each for 5 min) in demineralization solution with the slabs immersed in artificial saliva between dipping. The treatment for the enamel slabs in the SFGD group involved exposure all the time to 2 SFGD devices per group during the cycling regime. In contrast, slabs in the CPP-ACP group were exposed to CPP-ACP slurry once daily for 30 min after the last demineralization challenge of the day. The slabs in the SFGD + CPP-ACP group received both treatments as the SFGD and CPP-ACP groups. The control group received no treatment during the cycling. There was a statistically significant difference in enamel SMH change among the groups (one-way ANOVA; p &lt; 0.0001). Enamel SMH values in the SFGD, CPP-ACP and SFGD + CPP-ACP groups were all significantly higher than in the control group (Bonferroni; p &lt; 0.0001). There was no significant difference in enamel SMH between the SFGD and CPP-ACP groups (p &gt; 0.05). The use of both SFGD + CPP-ACP showed a non-significant trend for improvement in enamel SMH in comparison to SFGD or CPP-ACP alone.</jats:p

Remineralizing potential of a 60-s in vitro

Background No published studies exist on the remineralizing potential of Tooth Mousse Plus® (TMP) when applied for less than 3 min. Aim: To evaluate (i) the remineralizing potential of TMP on artificial carious lesions, when applied thrice daily for 60 s, and (ii) the benefit of using a fluoridated dentifrice prior to TMP application. Design: Carious lesions, 120–200 μm deep, were produced by placing molars in demineralizing solution for 96 h, and sections 100–150 μm thick were then randomly assigned to four groups. Specimens were treated thrice daily with a non‐fluoridated (Group A), or 1000 ppm F dentifrice (Group B), or TMP (Group C), or a 1000 ppm F dentifrice followed by TMP application (Group D), and then subjected to a 10‐day pH cycling model. Lesion evaluation involved polarizing light microscopy and microradiography. Results: Post‐treatment maximum mineral content at the surface zone (Vmax) was significantly increased and lesion depth (LD) significantly decreased in Group C, while only the Vmax increased in Group D. Increase in LD was observed in Group B; however, no significant differences were noted in percentage LD changes between groups B, C, and D (P > 0.05). Conclusions: TMP applied for 60 s significantly remineralized the artificial carious lesions. No additional benefit was evident when TMP was preceded by treatment with 1000 ppm F dentifrice.No Full Tex