The prevalence of MIH in the permanent dentition of south Indian children was 8.9%. There is a need for a proper planned preventive and restorative program with regard to the increasing prevalence of MIH.

The prevalence of dental erosion was found to be low when compared to various studies done all over the world.

Background:Variations in the structure of teeth have always been a great curiosity to the dentist from the scientific and practical point of view.Aim:To evaluate the prevalence of a few aberrant morphological features namely, cusp of Carabelli in primary maxillary second molar and in permanent first molar, five cusp in primary maxillary second molar and permanent first molar, shoveling and double shoveling with respect to permanent maxillary central incisors, four cusped primary mandibular second molar and permanent first molar, six cusped primary mandibular second molar and permanent first molar and seven cusped primary mandibular second molar and permanent first molar in 6–10 year old children belonging to the East Bengaluru, a City in India.Design:A cross-sectional survey was conducted among 2111 children by two stage sampling method. Type III examination was performed. The findings were subjected to Chi-square test.Results:83.8% of the studied population had one or more of the variations checked for, as mentioned above. The variation most commonly seen was double shoveling (66.6%) followed by shoveling (65.7%). No significant results were observed in any trait with respect to gender.Conclusion:This study is the first of its kind, providing a baseline data of the prevalence of morphological details in the pediatric Indian population.

Background The contact areas in between primary teeth are broader, flatter, and located further cervically when compared with the contact areas of permanent molars. Aim We investigated the prevalence of interproximal contact area types of primary molars using CBCT images in children aged 3‐10 years. Our second objective was to correlate OXIS contact areas when observed with CBCT images and clinical photographs. Design A retrospective cross‐sectional study was performed with 367 CBCT images of children, aged 3‐10 years, obtained from Children's Dental Centre, South Korea. The type of contacts in between primary molars was scored at various levels, specifically, occlusal, middle, and cervical thirds, according to OXIS criteria. Following this, the same patient's records were checked for the presence of clinical photographs and scored according to the same criteria. Prevalence was stated as percentages along with numbers. Chi‐square test was applied to determine association of contact areas across genders and arches. The correlation between the two methods was done by Cohen's Kappa correlation test. Results The prevalence of the OXIS contacts obtained from CBCT images was as follows: I (79.7%), followed by X (10.0%), S (6.6%), and, finally, O (3.7%). The overall score of all the 1343 contact areas matched with the score observed at the occlusal third. All included contacts were of O (open) type at cervical third, and 1,231 contacts were of O (open) type at the middle third. Significant results were observed with respect to arches (P < .001). The correlation between the two methods was found to be 0.958. Conclusions The contact area observed at the occlusal level determined the overall type of contact based on OXIS criteria. Thus, reports in the literature concluded that contact areas are broad, flat, and extend further gingivally should be revised. The study also concluded almost perfect agreement between CBCT images and clinical photographs.

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