AbstractBackgroundMolar–incisor hypomineralisation (MIH) is a frequently encountered dental condition in the clinical setting, and correct diagnosis can influence management outcomes.AimTo assess the knowledge of and attitudes towards the management of MIH amongst dentists in the Netherlands.DesignThe study was conducted as a cross‐sectional web survey. The questionnaire used included questions regarding respondent characteristics, awareness, knowledge and management of MIH and was distributed through the Royal Dutch Association for Dentistry (KNMT) to a random sample of 900 dentists. Variables were analysed using descriptive statistics, and differences between distinct groups of dentists were tested using the chi‐squared test.ResultsRespondents consisted of 76.6% general dental practitioners, 9.1% paediatric dentists and 14.3% differentiated (specialist) dentists, with a 25.6% overall response rate. The majority knew the term MIH and its clinical characteristics, and could distinguish MIH from other enamel defects. Regarding aetiological factors, 76.6% reported a genetic component. In an asymptomatic case, 47.3% reported non‐invasive treatments. In a mild symptomatic case, treatments from non‐invasive to invasive were reported (p < .05). In a severe symptomatic case, the majority reported invasive treatments. Two‐thirds of respondents were interested in further clinical training about MIH.ConclusionsMost respondents knew the term MIH and its clinical characteristics and would like further clinical training about MIH.