Tuesday, August 8, 2017

Molar Incisor Hypomineralization of Eight- and 14-year-old Children: Prevalence, Severity, and Defect Characeristics


Resident’s Name:            Carol Caudill                                                                            Date: 8/9/2017
Article Title: Molar Incisor Hypomineralization of Eight- and 14-year-old Children: Prevalence, Severity, and Defect Characteristics
Author(s): Kevrekidou, et al
Journal: Pediatric Dentistry
Date: Sept/Oct 2015
Major Topic: Molar Incisor Hypomineralization (MIH)
Type of Article: Cross-sectional study
Main Purpose: To provide epidemiological data concerning the prevalence, severity, and tooth surface distribution of molar incisor hypomineralization in 8 and 14-year-old children from three Greek urban locations
Key Points: (2 lines Max): Main conclusion or the most interesting
Intro
·      Molar incisor hypomineralization: developmental phenomenon in which one to four permanent first molars (PFMs) and possibly incisors appear with demarcated opacities due to enamel hypomineralization
·      Affects 1-2 out of 10 children
·      Associated with increased caries risk, pain, and poor dental restorative outcomes
Methods
·      Third graders and eighth graders from three Greek cities: Thessaloniki, Ptolemaida, Ioannina
·      Clinical exam took place in the school
·      Mild cases: enamel opacities with no enamel breakdown
·      Severe: enamel opacities with break-down, caries, persistent/spontaneous hypersensitivity affecting functions, strong esthetic concerns
Results
·      2,335 children participated in the study, 21% diagnosed with molar incisor hypomineralization. Statistically lower prevalence in Ptolemaida (16%) compared to Ioannina (23%) and Thessaloniki (23%)
·      46% of children only had molar hypomineralization, 54% had both molars and incisors affected
·      Maxillary molars were affected more than mandibular molars. Maxillary central incisors were affected more than other incisors
·      Mild defects only found in 76% of MIH cases, at least one severe defect found in 24%
·      Severity was not related to gender or residence but was strongly associated with age: 13% of 8-year-old MIH cases were severe, 35% of 14-year-old MIH cases were severe
Discussion
·      Prevalence of 21% MIH in this study is similar to several other studies. However, other studies have also found numbers that range from 2% to 38%
·      Facial surfaces of teeth are the most commonly affected surfaces and occur least often on proximal surfaces (esthetically important surfaces are affected more)
Remarks:
1-
2-
Assessment of Article:  Level of Evidence/Comments: III, descriptive cross-sectional study

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