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Efficient CO 2 separation technologies are essential for mitigating climate change. Compared to traditional thermochemical methods, electrochemically mediated carbon capture using redox-tunable sorbents emerges as a promising alternative due to its versatility and energy efficiency. However, the undesirable linear free-energy relationship between redox potential and CO 2 binding affinity in existing chemistry makes it fundamentally challenging to optimise key sorbent properties independently via chemical modifications. Here, we demonstrate a design paradigm for electrochemically mediated carbon capture sorbents, which breaks the undesirable scaling relationship by leveraging intramolecular hydrogen bonding in isoindigo derivatives. The redox potentials of isoindigos can be anodically shifted by >350 mV to impart sorbents with high oxygen stability without compromising CO 2 binding, culminating in a system with minimised parasitic reactions. With the synthetic space presented, our effort provides a generalisable strategy to finetune interactions between redox-active organic molecules and CO 2 , addressing a longstanding challenge in developing effective carbon capture methods driven by non-conventional stimuli. Electrochemically-mediated carbon capture has good energy efficiency and potential in carbon dioxide separation, but optimisation of these systems is challenging. Here, the authors report the use of isoindigo derivatives to give fine-tuned interactions with CO 2 for carbon capture methods.

The electrochemical reduction of carbon dioxide (CO 2 ) to carbon monoxide (CO) is challenged by a selectivity decline at high current densities. Here we report a class of indigo-based molecular promoters with redox-active CO 2 binding sites to enhance the high-rate conversion of CO 2 to CO on silver (Ag) catalysts. Theoretical calculations and in situ spectroscopy analyses demonstrate that the synergistic effect at the interface of indigo-derived compounds and Ag nanoparticles could activate CO 2 molecules and accelerate the formation of key intermediates (*CO 2 – and *COOH) in the CO pathway. Indigo derivatives with electron-withdrawing groups further reduce the overpotential for CO production upon optimizing the interfacial CO 2 binding affinity. By integrating the molecular design of redox-active centres with the defect engineering of Ag structures, we achieve a Faradaic efficiency for CO exceeding 90% across a current density range of 0.10 − 1.20 A cm –2 . The Ag mass activity toward CO increases to 174 A mg –1 Ag . This work showcases that employing redox-active CO 2 sorbents as surface modification agents is a highly effective strategy to intensify the reactivity of electrochemical CO 2 reduction. It is challenging to maintain the CO selectivity under high current densities in CO 2 electro-reduction process. Here the authors report the synergistic interface between redox active CO 2 organic sorbents and defective Ag catalysts that can enable an ampere level CO 2 -to-CO conversion.

Mandibular advancement devices (MADs) remain a popular non-invasive treatment modality for the management of obstructive sleep apnea (OSA). However, the occlusal side effects from long-term therapy may result in poor patient compliance and patient drop-outs. Hence, knowledge of the possible side effects of these devices on occlusion is necessary. This article attempts to systematically review the evidence available in support of the possible long-term effects of mandibular advancement therapy on occlusion in adult sleep apnea patients. A detailed search was conducted for unpublished and published literature and their references in various electronic databases. A grey literature search was also performed. Studies until June 30, 2022, were selected. Randomized controlled trials, non-randomized trials, and cohort studies investigating the occlusal side effects of MADs for the treatment of snoring or OSA with a follow-up of at least four years were included. Study selection, data extraction, and risk of bias assessment were performed individually and in duplicate. The risk of bias was assessed by Cochrane tools for randomized and non-randomized studies. Fourteen studies were selected for the final qualitative analysis. The side effects reported were upper incisor retroclination, lower incisor proclination, decreased overjet and overbite, and change in the total occlusal contact area. The review concludes that long-term MAD therapy has statistically and clinically significant effects on occlusion.

 Early childhood and adolescence are prime years that people spend in school. These formative years give the school ample opportunities to impart certain aspects of lifestyle and healthcare to the student, in addition to academics. School health programs are vital in providing comprehensive education and healthcare services. The objectives of the study are to enlist the socio-demographic factors affecting the nutritional level between students who enrolled for the mid-day meal scheme and those who did not.  This is a cross-sectional questionnaire-based study, which was carried out between children who enrolled in the mid-day meal program and home-cooked meals for students from 3rd to 12th grade in Faridabad. The study was conducted by the Department of Public Health Dentistry, Faridabad, from January to June 2024.  It was determined that 162 (53.6%) males and 222 (74.9%) females were obese. 332 (55.3%) believed that social media had an impact on their dietary decisions, while 268 (44.7%) disagreed. When asked to rate how many healthy food alternatives were available at their school, 53 (8.8%) of them said it was great, 194 (32.3%) said it was good, 196 (32.7%) said it was fair, and 157 (26.2%) said it was poor. 236 (78.7%) parents of the mid-day meal group never had dietary supplemental education, which is why children have indigent nutritional status. The mean waist-to-hip ratio (WHR) was calculated as 0.92 ± 0.43 and 0.88 ± 0.69 with significant values of 0.00 (p≤0.05) in the home-cooked and mid-day meal-consuming groups respectively.  Students consuming home-cooked meals showed a better WHR for age than those consuming mid-day meals. Children of parents with high education levels have good nutritional status and are healthier as compared to children with parents who have low education levels. Thus, there is a dire need to include school health programs to provide healthy and nutritious food to children, in need.

Objective: The objective of this study is to evaluate the effect of chlorhexidine on the outcome of pit and fissure sealant (PFS) in permanent molars. Methods: A double-blind randomized controlled trial using split-mouth design was conducted for a period of 1 year. The clinical trial registry was done in the Indian Council of Medical Research, and the clinical trial number obtained was CTRI/2016/08/007222. The age group of participants involved in the trial was 7-14 years. Maxillary or mandibular permanent molar which satisfies the criteria for application of PFS was included in the trial. Based on the eligibility criteria and considering the unknown observer/instrumentation errors, the sample size is 33 for each group. Simple randomization of treatment allocation was carried out using computer-generated random number for treatment assignment of the right molar tooth. The left molar received the alternative treatment. The outcomes of PFS were evaluated by a lone proficient assessor by means of the mouth mirrors and probes following the US public health service criteria. Results: A 6-month evaluation for the PFS with and without chlorhexidine showed 77.27% and 89.39% retention, respectively. PFS without chlorhexidine suffered a greater loss of surface texture and marginal discoloration in comparison to PFS with chlorhexidine at 3-, 6-, and 12-month intervals, but it was statistically insignificant. Conclusion: The present study showed improvement in outcome of PFS when an additional step of chlorhexidine is added although the results were statistically nonsignificant.

Background: Ideal pulpectomy for primary dentition demands fast, simple procedures, with short treatment times and minimal appointments. Recently, exclusive pediatric rotary files are available for use in primary teeth. There is a paucity of literature on the clinical efficacy of pediatric rotary files. Hence, this study was planned to evaluate and compare pediatric rotary files and K-files. Aim: The aim of this study was to evaluate and compare instrumentation time, obturation time, and radiographic quality of obturation using rotary systems (Kedo-S; Pro-AF Baby GOLD files) and manual (K-files) technique in primary molar pulpectomies. Materials and Methods: Forty-five primary mandibular molars from 42 children aged 5-9 were selected. Single-visit pulpectomy was performed after dividing selected teeth into three equal groups: (i) K-files, (ii) Kedo-S files, (iii) Pro-AF Baby GOLD files. Instrumentation and obturation times were recorded during the procedure. Immediate postoperative radiographs were taken and evaluated later for obturation quality by two independent evaluators blinded to the instrumentation technique. The results were then statistically analyzed. Results: Kedo-S (Group II) files required the least instrumentation time followed by Pro-AF (Group III) and K-files (Group I). The superior quality of obturation in lesser time was achieved using Pro-AF files (Group III) followed by Kedo-S (Group II) and K-files (Group I). Conclusion: Pediatric rotary files are efficient alternatives to hand instrumentation and can be considered as the standard of care in pulpectomies of primary teeth.

Background. This cross-sectional study investigated root caries prevalence among older adults in Miraj, India. Methods. Stratified cluster sampling was used; 891 (5%) of households were randomly selected in each of the nine wards in Miraj. Between January and June 2022, individuals aged >55 years from the selected households were invited to undergo oral examination. Root caries status was determined using the root caries index. Periodontal status was determined using the Community Periodontal Index. Sugar intake was determined using the sweet score. Data on the use of tobacco products and oral hygiene practices were collected using a self-administered questionnaire. Results. Of 1756 participants, 493 (28.1%) had root caries. The mean root caries index was 1.72±0.44, and the prevalence of recession with decay was 2.0%. The prevalences of periodontal pockets and loss of attachment were 10.5% and 92.6%, respectively. Caries was present in 82.0% of participants with a sugar score in the 'watch out zone' and 13.3% of participants with a'good'sugar score. Conclusions. 28.1% of older adults in Miraj had root caries. No root caries had fillings, which suggests low emphasis on oral health. Caries prevention measures should be implemented for older adults.

Chewing gum is a habit practiced regularly by a relatively high proportion of individuals in many countries including India, and its use has increased within the last decade. The aim of this study was to determine the effects of sugar-free and sugar chewing gums on plaque deposition. The study is a double blind clinical trial involving 16 healthy volunteers (divided into 2 groups) in a 4-day plaque regrowth model. On day one, subjects received professional prophylaxis, suspended oral hygiene measures, and commenced chewing their allocated product. Gum chewing was one piece chewed for 30 minutes 3 times a day. On day 5, subjects were scored for plaque with the help of Silness and Loe Index. Results show sugar-free group have a lesser mean plaque score of 0.98 as compare to sugar group (1.23), though this difference was not statistically significant. The sugar-free gums can be used as an adjunct to mechanical oral hygiene measures.

Evaluating the factors influence student perception, might allow programmatic changes designed to enhance students' psychosocial well-being and academic performance. The purpose of this study was to investigate perceived sources of stress on dental students and the role of parents in their career choice decisions. In a cross-sectional design, a modified dental environmental stress questionnaire was administered to all dental students. The responses to the questionnaire were based on a four-point Lickert scale, not stressful to severely stressful. Means and standard deviations were determined for stress scores of individuals for each item and were used to compare the classes, genders, and choices. Student's t, one way ANOVA, and Newman Keuls multiple comparison post hoc tests were used to analysed the data at the significant level of P ≤ 0.05. A total of 304 undergraduate students constituted the study population. Of the respondent, 60% were men and 40% were women. The final year students presented with higher stress scores. In gender comparison, men suffered more stress (62.9%) than women (60.1%). According to the career choice decision, students forced by parents had more perception of stress (69.0%) and the students staying in the hostel (62.7%) showed more perception of stress than day scholars (56.3%). The study indicates that the congenial environment needs to be created for dental education and the parents also need to be counselled against forcing their children to join an educational programme i.e. not of their choice.

The electrochemical reduction of carbon dioxide (CO ) to carbon monoxide (CO) is challenged by a selectivity decline at high current densities. Here we report a class of indigo-based molecular promoters with redox-active CO binding sites to enhance the high-rate conversion of CO to CO on silver (Ag) catalysts. Theoretical calculations and in situ spectroscopy analyses demonstrate that the synergistic effect at the interface of indigo-derived compounds and Ag nanoparticles could activate CO molecules and accelerate the formation of key intermediates (*CO and *COOH) in the CO pathway. Indigo derivatives with electron-withdrawing groups further reduce the overpotential for CO production upon optimizing the interfacial CO binding affinity. By integrating the molecular design of redox-active centres with the defect engineering of Ag structures, we achieve a Faradaic efficiency for CO exceeding 90% across a current density range of 0.10 - 1.20 A cm . The Ag mass activity toward CO increases to 174 A mg . This work showcases that employing redox-active CO sorbents as surface modification agents is a highly effective strategy to intensify the reactivity of electrochemical CO reduction.