Dental arch changes comparison between expander with differential opening and fan-type expander: a randomized controlled trial

2020 ◽  
Author(s):  
Camila Massaro ◽  
Guilherme Janson ◽  
Felicia Miranda ◽  
Aron Aliaga-Del Castillo ◽  
Fernando Pugliese ◽  
...  
Keyword(s):  
Randomized Controlled Trial ◽  
Controlled Trial ◽  
Dental Arch ◽  
Maxillary Expansion ◽  
Nasal Bridge ◽  
Arch Width ◽  
Randomized Controlled ◽  
Permanent Molar ◽  
Maxillary Arch ◽  
Arch Shape

Summary Objectives To compare posterior crossbite correction frequency and dentoalveolar changes of the expander with differential opening (EDO) and the fan-type expander (FE). Trial design Two-arm parallel randomized controlled trial. Methods Forty-eight patients from 7 to 11 years of age were allocated into two groups. Twenty-four patients were treated with the EDO and 24 patients were treated with the FE. Block randomization was performed. The study was single blind. Digital dental models were acquired before treatment and 6 months after rapid maxillary expansion. The primary outcomes were crossbite correction rate and maxillary arch width changes. Secondary outcomes were interincisal diastema, arch perimeter, length, size and shape, and mandibular dental arch changes. Results The final sample comprised 24 patients (13 female and 11 male; mean initial age of 7.62 years) in the EDO group and 24 patients (14 female and 10 male; mean initial age of 7.83 years) in the FE group. The crossbites were corrected in 100 per cent of subjects from EDO group and in 75 per cent of patients in FE group. EDO showed greater increases in maxillary intermolar region (P < 0.001), while the FE demonstrated greater increases in the intercanine distance (P = 0.008). Increase in mandibular inter-first permanent molar distance was slightly greater in the EDO group (mean difference of 0.8 mm). Changes in arch length and perimeter were similar in both groups. Both expanders changed the maxillary arch shape. The post-treatment arch shape was larger in the anterior region for FE and in the posterior region in the EDO group. Harms Discomfort during activation was reported by 54 per cent of the participants. A temporary change in the nasal bridge was reported by one patient from FE group. Conclusions Maxillary arch width and shape changes were distinct between the EDO and the FE. Greater transversal increases of the anterior and posterior regions were observed for the FE and the EDO, respectively. A slightly greater mandibular spontaneous expansion was observed for the EDO only at the molar region. Trial registration NCT03705871.

scholarly journals Dental arch response to Haas-type rapid maxillary expansion anchored to deciduous vs permanent molars: A multicentric randomized controlled trial

2014 ◽  
Vol 85 (4) ◽  
pp. 570-576 ◽  
Author(s):  
Alessandro Ugolini ◽  
Carmen Cerruto ◽  
Luca Di Vece ◽  
Luis Huanca Ghislanzoni ◽  
Chiarella Sforza ◽  
...  
Keyword(s):  
Controlled Trial ◽  
Rapid Maxillary Expansion ◽  
Dental Arch ◽  
Maxillary Expansion ◽  
Posterior Crossbite ◽  
Permanent Molar ◽  
Permanent Molars ◽  
Deciduous Molars ◽  
First Permanent Molars ◽  
Intercanine Distance

ABSTRACT Objective:  To assess maxilla and mandibular arch widths' response to Haas-type rapid maxillary expansion (RME) anchored to deciduous vs permanent molars on children with unilateral posterior crossbite. Materials and Methods:  Seventy patients with unilateral posterior crossbite recruited at the Universities of Genova, Siena, and Insubria (Varese) were randomly located into GrE (RME on second deciduous molars) or Gr6 (RME on first permanent molars) and compared. Results:  Upper intermolar distance and permanent molar angulation increased significantly in Gr6 vs GrE at T1. Upper intercanine distance increased significantly in GrE vs Gr6 at T1 and T2. GrE showed significant increases for upper intermolar and upper intercanine widths. Gr6 showed statistically significant increases for upper intermolar widths, for upper and lower intercanine widths, and for increases of angulation of upper and lower permanent molars. Conclusions:  GrE showed reduced molar angulation increases at T1 and reduced molar angulation decreases at T2 when compared with Gr6. At T2, the net increase of the upper intercanine distance in GrE was still significant compared with Gr6, indicating a more stable expansion in the anterior area.

scholarly journals Cephalometric effects of Pushing Splints 3 compared with rapid maxillary expansion and facemask therapy in Class III malocclusion children: a randomized controlled trial

2020 ◽  
Author(s):  
Angela Galeotti ◽  
Stefano Martina ◽  
Valeria Viarani ◽  
Lorenzo Franchi ◽  
Roberto Rongo ◽  
...  
Keyword(s):  
Randomized Controlled Trial ◽  
Regression Analysis ◽  
Controlled Trial ◽  
Rapid Maxillary Expansion ◽  
P Value ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Expansion ◽  
Clinical Trial Registry ◽  
Randomized Controlled

Summary Background Pushing Splints 3 (PS3) device was recently introduced for the treatment of Class III malocclusion in children. Objectives To assess the effect on the sagittal maxillary position (SNA, primary outcome) of PS3 therapy compared with rapid maxillary expansion and facemask therapy (RME/FM) and to compare skeletal and dento-alveolar effects in growing Class III patients. Trial design This trial was a single-centre randomized controlled trial with two groups randomly allocated in a 1:1 ratio of equal size by sealed-envelope randomization, conducted at the Dentistry Unit of Bambino Gesù Children’s Hospital, IRCCS (Rome, Italy). Methods A total of 48 patients with Class III malocclusion were included in the study and randomly allocated to the two groups: PS3 therapy and RME/FM therapy. Only the RME/FM group underwent palatal expansion, and both groups were instructed to wear the appliances 14 hours/day. Pre- (T0) and post-treatment (T1) cephalograms were taken. An independent sample t-test and regression analysis were used to analyse the data (P value <0.05). Researchers involved in statistics and tracings were blinded to the treatment allocation. Results A total of 42 patients (21 for each group) completed the study. The maxillary sagittal position improved similarly in both groups (SNA = 0.4°; P = 0.547). A statistically significant decrease of SNPg angle (−1.6°; P < 0.001) and increase of ANPg angle (1.4°; P = 0.018) were found in the RME/FM group compared with PS3 group. CoGoMe angle significantly decreased in RME/FM group compared with PS3 group (−1.7°; P = 0.042). The regression analysis showed an association between SN/MP angle at T0 and the differences between T1 and T0 of SNPg (B = 0.13; P = 0.005) and SN/MP (B = −0.19; P = 0.034). Only three patients (PS3 = 2; RME/FM = 1) had breakages of the devices. Limitations Results are limited to short-term effects. Conclusion RME/FM therapy and PS3 are both effective therapies for the early correction of Class III malocclusion. The PS3 controlled better mandibular divergency reducing the clockwise rotation in patients with higher mandibular inclination. Registration This study was not registered in a clinical trial registry.

scholarly journals Maxillary Dental Arch changes following the Leveling and Alignment Stage with Lingual and Labial Orthodontic Appliances: A Preliminary Report of a Randomized Controlled Trial

2014 ◽  
Vol 15 (5) ◽  
pp. 561-566 ◽  
Author(s):  
Mohammad Y Hajeer ◽  
Tarek Z Khattab ◽  
Hassan Farah ◽  
Rabab Al-Sabbagh
Keyword(s):  
Randomized Controlled Trial ◽  
Preliminary Report ◽  
Controlled Trial ◽  
Class I ◽  
Dental Arch ◽  
Orthodontic Appliances ◽  
Randomized Controlled ◽  
Fixed Orthodontic Appliances ◽  
The University ◽  
Leveling And Alignment

ABSTRACT Background No randomized controlled trial has tried to compare transverse dental arch changes between the lingual and labial orthodontic fixed appliances in the early stage of treatment. Objective To compare upper dental arch changes between lingual and labial fixed orthodontic appliances after leveling and alignment. Design, setting Parallel-groups randomized controlled trial on patients with class I moderate crowding teeth treated at the University of Al-Baath Dental School in Hamah, Syria. Participants About 102 patients with crowded teeth and class I malocclusion were evaluated and 58 patients fulfilled the inclusion criteria. Randomization was performed using computer generated tables; allocation was concealed using sequentially numbered opaque and sealed envelopes. About 52 participants were analyzed (mean age 21.5 ± 3.2 years). They were randomly distributed into two groups with 26 patients in each (1:1 allocation ratio). Intervention Lingual vs labial fixed orthodontic appliances were used. Main outcome measure Intercanine width, interpremolar width, intermolar width, and arch length were measured on study models before brackets’ placement (T1), at the end of leveling and alignment stage (T2). Results Statistically significant increase was detected in the intercanine width in the lingual group (1.99 mm, p < 0.001) and in the labial group (1.22 mm, p < 0.001). The interpremolar width had a significant decrease in the lingual group (–0.70 mm, p < 0.001), whereas there was a significant increase in this width in the labial group (1.73 mm, p < 0.001). A significant decrease in intermolar width was detected in the lingual group (–0.79 mm, p < 0.001) whereas a significant increase was observed in the labial group (0.81 mm, p < 0.001). The differences between the two groups were significant for all comparisons (p < 0.001). Conclusion The labial appliance produced a significant increase in all horizontal transverse arch dimensions, whereas in the lingual appliance group the intercanine width increased significantly in conjunction with a significant narrowing of posterior segments. Funding The University of Al-Baath Postgraduate Research Budget (UBDS-00786223-PG). How to cite this article Khattab TZ, Hajeer MY, Farah H, Al-Sabbagh R. Maxillary Dental Arch changes following the Leveling and Alignment Stage with Lingual and Labial Orthodontic Appliances: A Preliminary Report of a Randomized Controlled Trial. J Contemp Dent Pract 2014;15(5):561-566.

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