TODENTJ-25-03-2019_TODENTJ-12-714 1553507508 Bentham Open doi@benthamopen.net Bentham Open The Open Dentistry Journal TODENTJ 1874-2106 09 28 2018 12 1 Archana Rai Avnish Singh Ipseeta Menon Jyoti Singh Vineet Rai Gunjan Singh Aswal Background: The aim of this school-based, cross-sectional survey was to investigate the prevalence and risk factors of permanent Molar Incisor Hypomineralization among 7-9 years old school children in Muradnagar. Methods: This cross-sectional study was performed among 7-9 years old school children in Muradnagar. Estimated sample size was 992 in this study. Multistage cluster sampling technique was used in this study in which schools were the clusters which were selected randomly. The study proforma was divided into 2 parts, first part comprised of demographic status, socio-economic status, questionnaires on risk factors of Molar Incisor Hypomineralisation such as prenatal, perinatal and postnal history upto 3 years, feeding pattern, fluoride and other pollutants exposure history, dental history, history of trauma to teeth/face, family history of enamel defects which was asked to the mothers and filled by one examiner in a face to face interview. The second part comprised of recording format of clinical variables assessed by investigator to be recorded by the recording clerk. Molar incisor hypomineralisation were recorded using Modified Developmental Defect of Enamel index developed by Clarkson J.J. and O’ Mullane D.M. in 1989 and dental caries by using Decayed Missing Filled Tooth index (World Health Organization Modification 1997) in which WHO probe was used for examination of dental caries as recommended by WHO in the Oral Health Surveys, Fourth edition; 1997 (Spanish version). Before 1997 modification dental explorer was used for the examination of dental caries. Chi square test, Pearson’s Correlation test, Logistic Regression Analysis and Unpaired t-test were used for analysing the data. Results: The overall prevalence rate of Molar incisor hypomineralisation was 21.4% in this study. Age, problems during pregnancy, normal delivery and childhood illness/ infections are the risk factors which have highest strength of association. Conclusion: In the present study Molar incisor hypomineralisation was found to affect 2 out of every 10 children examined which was higher than that observed in other studies on Indian children. 09 28 2018 714 722 TODENTJ-12-714 1 10.2174/crossmark_policy opendentistryjournal.com benthamopen.com true Peer Reviewed Single blind Checked with iThenticate 2018-4-30 2018-7-18 2018-9-7 2018-09-28 https://creativecommons.org/licenses/by/4.0/legalcode 10.2174/1745017901814010714 1553507508 https://opendentistryjournal.com/VOLUME/12/PAGE/714/ https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-714/TODENTJ-12-714.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-714/TODENTJ-12-714.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-714/TODENTJ-12-714.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-714/TODENTJ-12-714.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-714/TODENTJ-12-714.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-714/TODENTJ-12-714.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-714/TODENTJ-12-714.pdf https://opendentistryjournal.com/contents/volumes/V12/TODENTJ-12-714/TODENTJ-12-714.xml Eur. Arch. Paediatr. Dent. Alaluusua S. 11 53 2010 10.1007/BF03262713 Alaluusua S. Aetiology of molar-incisor hypomineralisation: A systematic review. Eur Arch Paediatr Dent 2010; 11 (2) : 53-8. Adv. Dent. Res. Clarkson J. 3 104 1989 10.1177/08959374890030020601 Clarkson J. Review of terminology, classifications, and indices of developmental defects of enamel. Adv Dent Res 1989; 3 (2) : 104-9. Int. J. Paediatr. Dent. Jälevik B. 10 278 2000 10.1046/j.1365-263x.2000.00210.x Jälevik B, Norén JG. Enamel hypomineralization of permanent first molars: A morphological study and survey of possible aetiological factors. Int J Paediatr Dent 2000; 10 (4) : 278-89. Smith BH. Advances in dental anthropology 1991; 143-68. Eur. J. Paediatr. Dent. Beentjes V.E.V.M. 1 123 2000 Beentjes VEVM, Weerheijm KL, Groen HJ. A match-control study into the aetiology of hypomineralised first permanent molars. Eur J Paediatr Dent 2000; 1 : 123. Eur. J. Paediatr. Dent. Jalevik B. 1 128 2000 Jalevik B, Klingberg G, Noren JG, Barregard L. Epidemiological study of idiopathic enamel hypomineralisation in permanent first molars. Eur J Paediatr Dent 2000; 1 : 128. Eur. J. Paediatr. Dent. Leppaniemi A. 1 128 2000 Leppaniemi A, Lukinmaa L, Alaluusua S. Nonfluoride hy-pomineralisation in permanent first molars. Eur J Paediatr Dent 2000; 1 : 128. Eur. J. Paediatr. Dent. Weerheijm K.L. 1 129 2000 Weerheijm KL, Groen HJ, Beentjes VEVM. Prevalence in 11- year-old Dutch children of cheese molars. Eur J Paediatr Dent 2000; 1 : 129. Eur. J. Paediatr. Dent. Weerheijm K.L. 4 114 2003 Weerheijm KL. Molar incisor hypomineralisation (MIH). Eur J Paediatr Dent 2003; 4 (3) : 114-20. Int. J. Paediatr. Dent. Fagrell T.G. 18 333 2008 10.1111/j.1365-263X.2007.00908.x Fagrell TG, Lingström P, Olsson S, Steiniger F, Norén JG. Bacterial invasion of dentinal tubules beneath apparently intact but hypomineralized enamel in molar teeth with molar incisor hypomineralization. Int J Paediatr Dent 2008; 18 (5) : 333-40. Eur. Arch. Paediatr. Dent. Chawla N. 9 191 2008 10.1007/BF03262635 Chawla N, Messer LB, Silva M. Clinical studies on molar-incisor-hypomineralisation part 2: Development of a severity index. Eur Arch Paediatr Dent 2008; 9 (4) : 191-9. Acta Odontol. Scand. Jälevik B. 59 255 2001 10.1080/000163501750541093 Jälevik B, Klingberg G, Barregård L, Norén JG. The prevalence of demarcated opacities in permanent first molars in a group of Swedish children. Acta Odontol Scand 2001; 59 (5) : 255-60. Acta Odontol. Scand. Soviero V. 67 170 2009 10.1080/00016350902758607 Soviero V, Haubek D, Trindade C, Da Matta T, Poulsen S. Prevalence and distribution of demarcated opacities and their sequelae in permanent 1st molars and incisors in 7 to 13-year-old Brazilian children. Acta Odontol Scand 2009; 67 (3) : 170-5. J. Dent. Res. Clarkson J. 68 445 1989 10.1177/00220345890680030201 Clarkson J, O’Mullane D, Modified DDE. A modified DDE Index for use in epidemiological studies of enamel defects. J Dent Res 1989; 68 (3) : 445-50. Oral health surveys: Basic methods 4th ed. 1997. Oral Health Surveys: Basic methods 3rd ed. 1987. Int. J. Paediatr. Dent. Ghanim A. 21 413 2011 10.1111/j.1365-263X.2011.01143.x Ghanim A, Morgan M, Mariño R, Bailey D, Manton D. Molar-incisor hypomineralisation: Prevalence and defect characteristics in Iraqi children. Int J Paediatr Dent 2011; 21 (6) : 413-21. Aust. Dent. J. Arrow P. 53 250 2008 10.1111/j.1834-7819.2008.00057.x Arrow P. Prevalence of developmental enamel defects of the first permanent molars among school children in Western Australia. Aust Dent J 2008; 53 (3) : 250-9. Int J clin cases Investigat Anjum R. 6 140 2015 Anjum R, Sudhan ZA. Prevalence of Molar incisor Hypomineralisation (MIH) in a group of children coming to Indira Gandhi Govt. Dental College, Jammu. Int J clin cases Investigat 2015; 6 (4) : 140-5. Iran. J. Pediatr. Ahmadi R. 22 245 2012 Ahmadi R, Ramazani N, Nourinasab R. Molar incisor hypomineralization: A study of prevalence and etiology in a group of Iranian children. Iran J Pediatr 2012; 22 (2) : 245-51. Eur. Arch. Paediatr. Dent. Zawaideh F.I. 12 31 2011 10.1007/BF03262776 Zawaideh FI, Al-Jundi SH, Al-Jaljoli MH. Molar incisor hypomineralisation: Prevalence in Jordanian children and clinical characteristics. Eur Arch Paediatr Dent 2011; 12 (1) : 31-6. Kathmandu Univ Med J (KUMJ) Shrestha R. 12 38 2014 Shrestha R, Upadhaya S, Bajracharya M. Prevalence of molar incisor hypomineralisation among school children in Kavre. Kathmandu Univ Med J (KUMJ) 2014; 12 (45) : 38-42. Med. Oral Patol. Oral Cir. Bucal Robles M.J. 18 e187 2013 10.4317/medoral.18580 Robles MJ, Ruiz M, Bravo-Perez M, González E, Peñalver MA. Prevalence of enamel defects in primary and permanent teeth in a group of School children from Granada (Spain). Med Oral Patol Oral Cir Bucal 2013; 18 (2) : e187-93.