Dental Journal of Advance Studies

Avninder Kaur ¹, Reetu Singh ¹, Sudhir Mittal ², Sunila Sharma ¹, Aditi Bector ¹, Surabhi Awasthi ³

Affiliations
1 Department of Pediatric and Preventive Dentistry, Bhojia Dental College and Hospital, Baddi, H.P., IN
2 Department of Pediatric and Preventive Dentistry, Himachal Dental College, Sundernagar, H.P., IN
3 Department of Pediatric and Preventive Dentistry, Bhojia Dental College and Hospital, Baddi, H.P, IN

Abstract

Introduction: Aim: Materials and methods: Results: Conclusion: Key words: The determination of a tooth-size to arch length discrepancy in mixed dentition requires an accurate prediction of the mesiodistal width of the unerupted permanent teeth. The Moyers mixed dentition space analysis is the non-radiographic method for detecting tooth-size arch length discrepancies. Moyers analysis was developed for North American children. Anthropological studies reveal that tooth size varies among different races and ethnicities. Aim:The present study was aimed to determine the applicability of Moyers mixed dentition arch analysis in children of Baddi, Himachal Pradesh. Materials and methods: Dental study models of 120 children in age group of 13- 16 years, were analysed who presented with complete eruption of permanent mandibular incisors, maxillary and mandibular canines&premolars. All dentitions were required to be free of any signs of dental pathology or anomalies. Measurements of the mesiodistal dimensions of the mandibular and maxillary teeth were made using a digital caliper with a Vernier scale that was calibrated to the nearest 0.01mm. The values were then subjected to statistical analysis. All tooth groups showed highly significant differences (p<0.001) between mesiodistal widths in male and female subjects. Significant differences (p<0.05) were found between actual widths and the Moyers tables at almost all percentile levels, including the recommended 75%. Conclusion:The differences noted between predicted values from the Moyers tables and that of the present investigation might be the result of racial and ethnic diversity.

Keywords

Arch Length, Mixed Dentition, Moyers Analysis, Non-Radiographic Method,Tooth-Size.

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Sudhir Mittal ¹, Avninder Kaur ¹, Sunila Sharma ¹, Aditi Bector ¹, Reetu Singh ¹

Affiliations
1 Department of Paediatric and Preventive Dentistry, Bhojia Dental College and Hospital, Bhud, Baddi, Himachal Pradesh, IN

Abstract

In this paper, the current knowledge about Molar Incisor Hypomineralization (MIH) is presented. MIH is defined as hypomineralization of systemic origin of one to four permanent first molars frequently associated with affected incisors and these molars are related to major clinical problems in severe cases. The prevalence of MIH in the different studies ranges from 3.6-25 % and seems to differ in certain regions and birth cohorts. Several aetiological factors (for example, frequent childhood diseases) are mentioned as the cause of the defect. Children at risk should be monitored very carefully during the period of eruption of their first permanent molars. Treatment planning should consider the long-term prognosis of these teeth.

Keywords

MIH, First Permanent Molar, Hypomineralization.

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