Evaluation and Comparision of Molar Incisor Hypomineralisation-Treatment Need: Index and Molar Hypomineralisation Severity Index in Patients with MIH

Objective: A wide variation in the prevalence of Molar Incisor Hypomineralisation (MIH) could be due to lack of standardized system for recording it. Hence, the need of the hour is to test the applicability of the MIH-TNI, which is developed by an international MIH working group for epidemiological screening procedure. Till date Molar Incisor Hypomineralisation-Treatment Need Index (MIH-TNI) has not been used in any study. On the other hand, Molar Hypomineralisation Severity Index (MHSI) was developed to address deficiencies in indices concerning hypomineralisation severity. So, the aim of this study was to evaluate and compare MIH-TNI and MHSI.

Methods: 20 patients of age group 6-12 year with MIH were included in the study. Visual inspection of teeth without drying them was done using sterilized instruments. MIH TNI and MHSI was used simultaneously to measure the defect of MIH and the scores was recorded separately in the examination chart.

Results: Data were compared and results were statistically analyzed. According to MHSI, brown colored defect was more common in mandibular molars whereas in maxillary molars it was cream and white colored discoloration. By using MIH-TNI, the extent of defect could also be analyzed. Maxillary molars and maxillary incisors were more commonly involved as compared to mandibular molars and mandibular incisors.

Conclusion: MIH-TNI being a simple-indices to use and reproduce, can play a significant role in maintaining the standardized criteria while recording MIH cases. Early diagnosis and prevention of MIH can thereby lead to prolonging the life of the affected teeth.