pISSN 2234-7518
eISSN 2005-372X
eISSN 2005-372X
Exclusion criteria for the sample selection
| Incomplete root development of the anterior teeth |
| Root dilacerations (root deviation of 20 degrees or more20) |
| Malformed tooth (including peg lateralis) |
| Fracture of the crown |
| Attrition on the crown (more than score 2 in the tooth wear index21) |
| Restoration on the crown |
| Endodontic treatment of the root |
| Orofacial cleft and/or craniofacial syndrome |
| Moderate or severe crowding (more than score 4 in the irregularity index22) |
| Previous orthodontic treatment |
| Severe retroclined incisors for the Class II group (Angle Class II division 2) |
| Positive anterior overjet for the Class III group |