An overview of the alteration of orthodontic treatment results with a removable orthodontic appliance using Little’s Irregularity Index: preliminary study of the Dental Hospital Faculty of Dentistry, Universitas Indonesia, Integration Clinic Patients

Introduction
The complexity of malocclusions, such as anterior dental irregularity, is important in determining the outcome of treatment with a removable orthodontic appliance. Little’s Irregularity Index is used to assess alterations of anterior teeth.

Material and methods
This was a descriptive study done on 47 patients’ dental casts before and after treatment using a removable or-thodontic appliance, between 2013 and 2017. Measurements were made using Little’s Irregularity Index.

Results
Patients who presented most often for removable orthodontic appliance treatment had minimal and moderate ante-rior dental irregularity. After treatment completion, the condition of the patients’ anterior teeth was altered to hav-ing either no or minimal irregularities, and no further patients had severe irregularities.

Conclusions
The condition of patients’ maxillary and mandibular anterior teeth improved after under­going removable ortho-dontic appliance treatment provided by dental students at our dental hospital between 2013 and 2017. Thus, the treatment given can be considered appropriate and in accordance with removable ortho­dontic appliance indi-cations and functioning.