This survey shows that Finnish dentists are rather homogeneous in their treatment decisions when managing primary tooth caries or a severely affected MIH tooth, although some practices vary between general and specialised dentists. Moreover, the disparity in treatment practices between different areas of Finland is evident. The proportion of SSC as a material choice was low. Patient co-operation plays a big role in treatment decisions and may explain why GICs were the most popular choice for restoring extensive primary tooth caries. The emphasis should be on behavioural management as well as on the evidence-based treatment recommendations.

The study aimed to explore the variability between the treatment decisions dentists make for MIH-affected teeth.