When the Midline Diastema Is Not Characteristic of the "Ugly Duckling" Stage.
This case report presents the interceptive orthodontic treatment of a 9-year, 5-month-old boy with class I malocclusion, a 9.0-mm maxillary midline diastema, and deviation from the midline. The treatment goals were to decrease the magnitude of the diastema and to simulate the characteristics of the "ugly duckling" stage. Braces were placed on the first molars and the maxillary central incisors. The biomechanics of the anchors on the first molars elicited substantial mesial movement of the left central incisor to match the midline. A flat wire segment was bonded onto the palatal surface of the central incisors for retention.
Graduate Dentistry Program, Orthodontics, School of Health and Biosciences, Pontifícia Universidade Católica do Paraná, Rua Imaculada Conceição 1155, 80215-901 Curitiba, PR, Brazil.
Orlando Motohiro
OM
Tanaka
Undergraduation Dentistry Course, Pontificia Universidade Católica do Paraná, 80215-901 Curitiba, PR, Brazil.
Alessandro Yuske Kusano
AY
Morino
Graduate Dentistry Program, Orthodontics, Pontificia Universidade Católica do Paraná, 80215-901 Curitiba, PR, Brazil.
Oscar Fernando
OF
Machuca
Graduate Dentistry Program, Orthodontics, Pontificia Universidade Católica do Paraná, 80215-901 Curitiba, PR, Brazil.
Neblyssa Ágatha
NÁ
Schneider