Pattern of microimplant displacement during maxillary skeletal expander treatment:A cone-beam computed tomography study
- Author:
Ney PAREDES
1
;
Ausama GARGOUM
;
Ramon DOMINGUEZ-MOMPELL
;
Ozge COLAK
;
Joseph BUI
;
Tam DUONG
;
Maya GIANNETTI
;
Fernanda SILVA
;
Kendra BROOKS
;
Won MOON
Author Information
- Publication Type:Original Article
- From:The Korean Journal of Orthodontics 2023;53(5):289-297
- CountryRepublic of Korea
- Language:English
-
Abstract:
Objective:To analyze the microimplant (MI) displacement pattern on treatment with a maxillary skeletal expander (MSE) using cone-beam computed tomography (CBCT).
Methods:Thirty-nine participants (12 males and 27 females; mean age, 18.2 ± 4.2 years) were treated successfully with the MSE II appliance. Their pre- and post-expansion CBCT data were superimposed. The pre- and post-expansion anterior and posterior inter-MI angles, neck and apical inter-MI distance, plate angle, palatal bone thickness at the MI positions, and suture opening at the MI positions were measured and compared.
Results:The jackscrew plate was slightly bent in both anterior and posterior areas. There was no significant difference in the extent of suture opening between the anterior and posterior MIs (P > 0.05). The posterior MI to hemiplate line was greater than that anteriorly (P < 0.05). The apical distance between the posterior MIs was greater than that anteriorly (P < 0.05). The palatal thickness at the anterior MIs was significantly greater than that posteriorly (P > 0.01).
Conclusions:In the coronal plane, the angulation between the anterior MIs in relation to the jackscrew plate was greater than that between the posterior MIs owing to the differential palatal bone thickness.
