Igor Salmoria1, Evaldo Chaves de Souza1, Alvaro Furtado2, Cristina Maria Franzini1, William Custodio3. 1. Department of Orthodontics, University Center of the Hermínio Ometto Foundation-FHO, Avenida Dr Maximiliano Baruto, 500, Araras, SP, Zip Code 13607-339, Brazil. 2. Department of Orthodontics, Centro Universitário Unifacvest: Centro Universitario Unifacvest, Florianópolis, SC, Brazil. 3. Department of Orthodontics, University Center of the Hermínio Ometto Foundation-FHO, Avenida Dr Maximiliano Baruto, 500, Araras, SP, Zip Code 13607-339, Brazil. williamcustodio@fho.edu.br.
Abstract
OBJECTIVES: To evaluate and correlate the dentoskeletal changes of adult patients after miniscrew-assisted rapid palatal expander (MARPE) in the two final stages of midpalatal suture ossification. MATERIALS AND METHODS: This interventional pre-post clinical study consisted of 20 adults (24.9±1.8 years), with transverse maxillary atresia, divided into two subgroups (n=10) based on the ossification degree of the midpalatal suture: stage D, fusion completed in the palatine bone; and stage E, fusion anteriorly in the maxilla. Cone beam computed tomography (CBCT) in the pre- (T0) and post-treatment (T1) time intervals were used to evaluate the anterior and posterior sutural opening, activation of the expander screw, vestibular-lingual inclinations, and widths of first premolars and first molars. Maxillary interincisor diastema was measured on patients' plaster models in the same timepoints. The Wilcoxon-Mann-Whitney test, generalized linear models (GLM), and chi-square (χ2) test were employed. RESULTS: All variables significantly increased after MARPE therapy regardless of the ossification degree (P<0.05). Patients with stage D suture presented wider interincisal diastema and maxillary suture opening (on both regions, anterior and posterior) when compared with patients with stage E (P<0.05). Maxillary interincisor diastema was positively associated with anterior and posterior suture opening for all subjects (P<0.05). MARPE therapy was unsuccessful in six patients, mostly presented by individuals with E maturation stage of the midpalatal suture. CONCLUSIONS: After MARPE, a significant correction in the transverse defect of the maxillary basal bone was achieved for adults in the last two midpalatal suture maturation stages. CLINICAL RELEVANCE: Adult patients in stage D of maxillary suture ossification are more susceptible to dentoskeletal changes following MARPE therapy as compared to patients with stage E.
OBJECTIVES: To evaluate and correlate the dentoskeletal changes of adult patients after miniscrew-assisted rapid palatal expander (MARPE) in the two final stages of midpalatal suture ossification. MATERIALS AND METHODS: This interventional pre-post clinical study consisted of 20 adults (24.9±1.8 years), with transverse maxillary atresia, divided into two subgroups (n=10) based on the ossification degree of the midpalatal suture: stage D, fusion completed in the palatine bone; and stage E, fusion anteriorly in the maxilla. Cone beam computed tomography (CBCT) in the pre- (T0) and post-treatment (T1) time intervals were used to evaluate the anterior and posterior sutural opening, activation of the expander screw, vestibular-lingual inclinations, and widths of first premolars and first molars. Maxillary interincisor diastema was measured on patients' plaster models in the same timepoints. The Wilcoxon-Mann-Whitney test, generalized linear models (GLM), and chi-square (χ2) test were employed. RESULTS: All variables significantly increased after MARPE therapy regardless of the ossification degree (P<0.05). Patients with stage D suture presented wider interincisal diastema and maxillary suture opening (on both regions, anterior and posterior) when compared with patients with stage E (P<0.05). Maxillary interincisor diastema was positively associated with anterior and posterior suture opening for all subjects (P<0.05). MARPE therapy was unsuccessful in six patients, mostly presented by individuals with E maturation stage of the midpalatal suture. CONCLUSIONS: After MARPE, a significant correction in the transverse defect of the maxillary basal bone was achieved for adults in the last two midpalatal suture maturation stages. CLINICAL RELEVANCE: Adult patients in stage D of maxillary suture ossification are more susceptible to dentoskeletal changes following MARPE therapy as compared to patients with stage E.
Authors: Joo-Hee Chun; Amanda Cunha Regal de Castro; Sunmee Oh; Kyung-Ho Kim; Sung-Hwan Choi; Lincoln Issamu Nojima; Matilde da Cunha Gonçalves Nojima; Kee-Joon Lee Journal: BMC Oral Health Date: 2022-04-08 Impact factor: 2.757
Authors: Aldin Kapetanović; Bieke M M J Odrosslij; Frank Baan; Stefaan J Bergé; René R M Noverraz; Jan G J H Schols; Tong Xi Journal: Clin Oral Investig Date: 2022-06-22 Impact factor: 3.606