BACKGROUND: This electronic survey-based study aimed to explore the variations in treatment decisions made by dentists from different specialties in Saudi Arabia when treating anterior and posterior permanent teeth afflicted by molar incisor hypomineralization (MIH) of varying severity. METHODS: A cohort of dental professionals, including general dentists, pediatric dentists, and restorative dentists/prosthodontists, participated in a validated electronic survey-based study between January and March 2023. The survey consisted of the following three sections: The first section collected demographic information from the participating dentists. The second part includes case scenarios and photographs of four clinical cases (two permanent first molars and two permanent incisors) diagnosed with MIH of varying degrees of severity. Following each case, the participants were asked to choose the treatment approach and final restorative material they preferred to manage the tooth in question. In the third part, participants were asked to select factors that influenced their treatment decisions. RESULTS: In total, 109 dentists responded to the questionnaire. For posterior permanent molars with both mild and severe MIH, general dentists and restorative dentists/prosthodontics preferred resin-based composite restoration. In contrast, pediatric dentists considered stainless steel crowns (SSCs) as the preferred modality. Resin infiltration was the most common treatment chosen for permanent anterior teeth with mild MIH. Resin-based composite restorations were predominantly chosen for severe cases. Tooth prognosis and dentist experience were among the top cited factors influencing the decision of preferred treatment in cases of permanent first molars diagnosed with MIH, and aesthetics was the most considered factor in cases of permanent incisors diagnosed with MIH. CONCLUSION: According to the survey, different dental specialties manage MIH cases differently depending on the severity and type of permanent tooth (anterior/posterior).