SEITO - Stockholm Eastman Index of Treatment Outcome

To obtain high quality in orthodontics; it is important to evaluate the treatment. There are many indices for evaluation of treatment outcome however all of them compare treatment outcome with ideal occlusion. Therefore Stockholm Eastman Index of Treatment Outcome (SEITO) was invented. This index relates the treatment outcome to the treatment goal. SEITO is a morphological index based on criteria from the records including study casts, and/or intra oral photos.

The outcome of treatment is related to the treatment goal as stated in the records. Pre-treatment goals are divided into subgroups; overjet, vertical relation anterior/lateral), anterior cross bite, transverse relations, impacted teeth and space crowding/ spacing. Each subgroup is scored; the points are 0, 1, 3 or 5 depending on the severity of the malocclusion. The points for each subgroup are added to give a total sum of treatment goal points. Each post-treatment subgroup above is evaluated. If the treatment goal is fulfilled, the treatment outcome points are equal to the treatment goal points. If not - there is a reduction in the outcome points. Finally the outcome points are expressed as a percentage of the treatment goal points and form a measure of the success of treatment.

SEITO index is a simple and quick way to obtain a picture of the quality of treatment outcome, and the only orthodontic index that relates the treatment outcome to the treatment goal.