Abstract
BackgroundMolar incisor hypomineralization (MIH) is an alarming problem with considerable challenges in management. This study aimed to evaluate and compare the knowledge, perceptions, and clinical experiences of molar incisor hypomineralization (MIH) between general dental practitioners (GDPs) and paediatric dentists (PDs) in Hong Kong.MethodsA cross-sectional survey of 557 randomly selected GDPs (approximately 25% of all registered dentists) and all registered PDs (n = 31) were invited. They were asked to complete a 4-section questionnaire adapted and modified from a study by Gambetta-Tessini and co-workers on sociodemographic profiles, knowledge, experience, and perceptions regarding MIH. Data were analyzed with chi-square, Fisher’s exact, and multiple factor ANCOVA tests.ResultsThe overall response rate was 43.37% (255/588). Majority (74.1%) of the respondents encountered MIH in their practices. A significantly higher mean knowledge score (46.33 ± 7.1) was observed among PDs than GDPs (43.09 ± 7.0) (P < 0.01) and among PDs who are 40 years old or younger (P < 0.001). Differences in treatment of MIH were also observed between PDs and GDPs (P < 0.05). Paediatric dentists were more confident in diagnosing and treating MIH (P < 0.001). Most respondents (87.8%) expressed a need for continuing education on MIH.ConclusionContinuing education on MIH is needed to assure that the highest quality of evidence-based care is given to patients with MIH. Dissemination of latest best evidence on MIH, especially to GDPs, will assure that the condition is accurately diagnosed and well managed.
Highlights
Molar incisor hypomineralization (MIH) is an alarming problem with considerable challenges in management
Study sample Two groups of dental practitioners (general dental practitioners (GDPs) and paediatric dentists (PDs)) practising in Hong Kong were recruited for this cross-sectional survey
GDPs and PDs appearing in the registry of the Dental Council of Hong Kong (DCHK) retrieved on the 11th of November 2016 were included in the study population
Summary
Molar incisor hypomineralization (MIH) is an alarming problem with considerable challenges in management. Affected teeth often present an asymmetrical appearance, with one molar being severely affected while the contralateral tooth appears unaffected [2]. The clinical presentation of MIH can vary from white creamy, yellow-brown demarcated enamel opacities, to post-eruptive breakdown, resembling hypoplasia or atypical caries on the enamel of the affected teeth [2]. Hypomineralized permanent first molars are more susceptible to post-eruptive breakdown secondary to masticatory forces acting on the teeth coupled with the dietary challenges that are present in the oral cavity [10]. This causes enamel chipping and dentine exposure as well as early dental caries. The overall oral health of the individual [2] will be affected
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