TY - JOUR
T1 - Three-dimensional evaluation of the root resorption of maxillary incisors after the orthodontic traction of bicortically impacted canines
T2 - case reports
AU - Arriola-Guillén, Luis Ernesto
AU - Rodríguez-Cárdenas, Yalil Augusto
AU - Ruíz-Mora, Gustavo Armando
AU - Aliaga-Del Castillo, Aron
AU - Schilling, Juan
AU - Dias-Da Silveira, Heraldo Luis
N1 - Publisher Copyright:
© 2019, The Author(s).
PY - 2019/12/1
Y1 - 2019/12/1
N2 - Background: The root resorption of the maxillary incisors after the orthodontic traction of impacted canines is a concern for clinicians. The aim of this case series report was to evaluate the root resorption of the maxillary incisors after traction until the occlusal plane of the bicortically impacted canines (placed between the two cortical bones in the middle of the alveolar process) located in a complex position using three-dimensional superimposition. This case series report describes the root resorption of the maxillary incisors after orthodontic traction with NiTi closed coil springs and a heavy anchorage appliance in three cases of bilateral impacted canines located in a complex position (bicortically) near to midline. Cone-beam computed tomographies (CBCTs) were obtained before and after traction. Root resorption in all root surfaces of the maxillary incisors was evaluated with color-coded maps using the ITK-SNAP and the 3D Slicer software to indicate loss of the root surface (in red) or gain of the surface (in blue) and was quantified in millimeters by the superimposition method. Results: The root changes mainly occurred in the apical third of the maxillary incisor root and did not exceed 2 mm. Conclusions: Root resorption of the maxillary incisors after the traction of bicortically impacted canines located in a complex position was observed mainly in the apex region, and the amount of root resorption was smaller than 2 mm in all root surfaces.
AB - Background: The root resorption of the maxillary incisors after the orthodontic traction of impacted canines is a concern for clinicians. The aim of this case series report was to evaluate the root resorption of the maxillary incisors after traction until the occlusal plane of the bicortically impacted canines (placed between the two cortical bones in the middle of the alveolar process) located in a complex position using three-dimensional superimposition. This case series report describes the root resorption of the maxillary incisors after orthodontic traction with NiTi closed coil springs and a heavy anchorage appliance in three cases of bilateral impacted canines located in a complex position (bicortically) near to midline. Cone-beam computed tomographies (CBCTs) were obtained before and after traction. Root resorption in all root surfaces of the maxillary incisors was evaluated with color-coded maps using the ITK-SNAP and the 3D Slicer software to indicate loss of the root surface (in red) or gain of the surface (in blue) and was quantified in millimeters by the superimposition method. Results: The root changes mainly occurred in the apical third of the maxillary incisor root and did not exceed 2 mm. Conclusions: Root resorption of the maxillary incisors after the traction of bicortically impacted canines located in a complex position was observed mainly in the apex region, and the amount of root resorption was smaller than 2 mm in all root surfaces.
KW - Canine tooth
KW - Cone-beam CT
KW - Root resorptions
UR - http://www.scopus.com/inward/record.url?scp=85063983676&partnerID=8YFLogxK
U2 - 10.1186/s40510-019-0267-z
DO - 10.1186/s40510-019-0267-z
M3 - Artículo
C2 - 30931492
AN - SCOPUS:85063983676
SN - 1723-7785
VL - 20
JO - Progress in Orthodontics
JF - Progress in Orthodontics
IS - 1
M1 - 13
ER -