scholarly journals Assessment of the Stability of the Palatal Rugae in a 3D-3D Superimposition Technique Following Slow Maxillary Expansion (SME)

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Valentina Lanteri ◽  
Gianguido Cossellu ◽  
Marco Farronato ◽  
Alessandro Ugolini ◽  
Rosalia Leonardi ◽  
...  
Keyword(s):  
Maxillary Expansion ◽  
Palatal Rugae ◽  
The Stability ◽  
3D Superimposition

scholarly journals Nonsurgical miniscrew-assisted rapid maxillary expansion results in acceptable stability in young adults

2016 ◽  
Vol 86 (5) ◽  
pp. 713-720 ◽  
Author(s):  
Sung-Hwan Choi ◽  
Kyung-Keun Shi ◽  
Jung-Yul Cha ◽  
Young-Chel Park ◽  
Kee-Joon Lee
Keyword(s):  
Young Adults ◽  
Treatment Modality ◽  
Orthodontic Treatment ◽  
Rapid Maxillary Expansion ◽  
Maxillary Expansion ◽  
Initial Examination ◽  
The Stability ◽  
Maxillary Deficiency ◽  
Time Point

ABSTRACT Objective:  To evaluate the stability of nonsurgical miniscrew-assisted rapid maxillary expansion (MARME) in young adults with a transverse maxillary deficiency. Materials and Methods:  From a total of 69 adult patients who underwent MARME followed by orthodontic treatment with a straight-wire appliance, 20 patients (mean age, 20.9 ± 2.9 years) with follow-up records (mean, 30.2 ± 13.2 months) after debonding were selected. Posteroanterior cephalometric records and dental casts were obtained at the initial examination (T0), immediately after MARME removal (T1), immediately after debonding (T2), and at posttreatment follow-up (T3). Results:  Suture separation was observed in 86.96% of subjects (60/69). An increase in the maxillary width (J-J; 1.92 mm) accounted for 43.34% of the total expansion with regard to the intermolar width (IMW) increase (4.43 mm; P < .001) at T2. The amounts of J-J and IMW posttreatment changes were −0.07 mm (P > .05) and −0.42 mm (P  =  .01), respectively, during retention. The postexpansion change in middle alveolus width increased with age (P < .05). The postexpansion change of interpremolar width (IPMW) was positively correlated with the amount of IPMW expansion (P < .05) but not with IMW. The changes of the clinical crown heights in the maxillary canines, first premolars, and first molars were not significant at each time point. Conclusions:  Nonsurgical MARME can be a clinically acceptable and stable treatment modality for young adults with a transverse maxillary deficiency.

scholarly journals Clinical effect on the alveolar bone of maxillary molar after rapid maxillary expansion: a systematic review and meta-analysis

2021 ◽  
Author(s):  
Bowen Zhang ◽  
Mengqiao Wang ◽  
Fenglu Zhao ◽  
Zijie Zhang ◽  
Fulan Wei
Keyword(s):  
Systematic Review ◽  
Cortical Thickness ◽  
Alveolar Bone ◽  
Data Extraction ◽  
Meta Analysis ◽  
Rapid Maxillary Expansion ◽  
Cochrane Central Register ◽  
Maxillary Expansion ◽  
Manual Search ◽  
The Stability

Abstract Background This study assessed the effects of rapid maxillary expansion (RME) on alveolar bone cortical thickness and vertical bone level of maxillary first molar. Material and methods PubMed, Web of Science, Cochrane Central Register of Controlled Trials (CENTRAL), Scopus and a manual search in reference lists of the included studies were searched up to November 2020. The data extraction and risk of bias assessment were performed independently by two authors. Review Manager 5 was used for quantitative analysis. Results Eight studies were selected for the systematic review, and six studies were statistically selected in meta-analysis. The thickness of the distal buccal alveolar bone was significantly reduced of both left (MD 0.53;95% CI:0.15–0.90) and right (MD 0.61;95% CI:0.28–0.94) sides of the maxillary first molar after RME. The same was true for the left (MD 0.63;95% CI:0.28–0.98) and right (MD 0.63;95% CI:0.36–0.91) sides of the mesial buccal side. And the vertical distance between the cusp tip and the buccal alveolar crest increased significantly after RME (SMD − 0.92;95% CI: -1.20–0.64). However, the study of palatal cortical thickness of maxillary first molar needs more clinical trials because of its high heterogeneity (left: I2 = 92%; right: I2 = 86%). Conclusions According to current studies, RME can reduce the buccal cortical thickness of maxillary first molars and increase vertical bone loss. More research is needed to determine the stability of the results. However, it is advisable to evaluate the alveolar bone before treatment.

Effects of Combined Bonded Maxillary Expansion and Face Mask on Dental Arch Length in Patients with Skeletal Class III Malocclusions

2017 ◽  
Vol 41 (1) ◽  
pp. 75-81 ◽  
Author(s):  
Fatma Deniz Uzuner ◽  
Duygu Öztürk ◽  
Selin Kale Varlık
Keyword(s):  
Face Mask ◽  
Mixed Dentition ◽  
Dental Arch ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Expansion ◽  
Skeletal Class ◽  
Palatal Rugae ◽  
Dental Arch Length ◽  
Orthodontic Models

Objective: To evaluate the effects of combined rapid maxillary expansion (RME) and face mask (FM) therapy during the mixed dentition period on the dental arch length in patients with skeletal Class III malocclusion. Study Design: We evaluated pre- and post-treatment orthodontic models of 52 patients (25 girls, 27 boys) aged 8–12 years with skeletal Class III malocclusion(ANB<0) accompanied by maxillary transverse deficiency and retrognatism treated by bonded RME-FM therapy for a mean duration of 8 months. Palatal rugae, the cusp tips of permanent first molars, deciduous molars/permanent premolars, deciduous canines and the incisal edges of permanent central incisors were marked on orthodontic models, which were then photocopied. Inter-molar, inter-premolar and inter-canine widths; the arch length; the arch depth and molar and incisor sagittal movements were measured on these photocopies. Statistical comparisons were made using paired t-tests. Results: Inter-molar, inter-premolar and inter-canine widths and the arch length showed significant increases after treatment, while the arch depth showed a significant decrease (p<0.001 for all). Conclusions: With the study limitations, our results suggest that combined RME-FM therapy increases the arch length in the mixed dentition of patients with skeletal Class III malocclusion.

scholarly journals Stability of Maxillary Expansion and Tongue Posture

2009 ◽  
Vol 79 (2) ◽  
pp. 214-220 ◽  
Author(s):  
M. Murat Ozbek ◽  
Ufuk T. Toygar Memikoglu ◽  
Ayse Tuba Altug-Atac ◽  
Alan A. Lowe
Keyword(s):  
Treatment Group ◽  
Hyoid Bone ◽  
Rapid Maxillary Expansion ◽  
Control Group ◽  
Maxillary Expansion ◽  
Adaptive Changes ◽  
Mandibular Plane ◽  
The Stability

Abstract Objective: To evaluate the adaptive changes and the stability in tongue posture following rapid maxillary expansion (RME) in patients without any signs or symptoms of respiratory disturbances. Materials and Methods: Growing subjects with maxillary constrictions and bilateral buccal crossbites were included in the treatment group (n = 20). A control group (n = 20) comprised subjects with normal dentoskeletal features. RME appliances were used in the treatment group, with an average active expansion of 15 ± 2 days. Cephalometric radiographs were traced and digitized to evaluate static tongue posture before RME and 6.75 ± 0.48 months after RME. Follow-up radiographic evaluations of 17 expansion cases were also performed after an average of 29.25 ± 1.85 months. Independent and paired t-tests were conducted to evaluate changes in tongue posture within and between groups. Results: Results revealed significant reductions of tongue-to-palate (P < .05) as well as hyoid bone-to-mandibular plane (P < .01) distances following RME. The new tongue posture was found to be stable during the follow-up period. Conclusions: A higher tongue posture can be obtained with RME in children with no reported respiratory disturbances. (Angle Orthod. 2009:79; )

The Skeletal and Dental Effects of Rapid Maxillary Expansion

1979 ◽  
Vol 6 (1) ◽  
pp. 25-29 ◽  
Author(s):  
S. Linder-Aronson ◽  
J. Lindgren
Keyword(s):  
Side Effects ◽  
Rapid Maxillary Expansion ◽  
Common Belief ◽  
Maxillary Expansion ◽  
Skeletal Changes ◽  
The Common ◽  
The Mean ◽  
The Stability

The investigation is a continued examination of the dental and skeletal changes accompanying rapid maxillary expansion on 23 patient. It also examines the stability of these changes 5 years post retention The results show that the final increase in width between the upper first molars recorded 5 years post retention Was 45 percent of that initially achieved by rapid maxillary expansion. The mean final increase in the inter canine width was only 23 percent of the expansion achieved initially. The results do not support the common belief that rapid maxillary expansion increases the overjet and reduces the overbite. No unfavourable skeletal and dental side effects of rapid maxillary expansion could be found.

scholarly journals Evaluation of Palatal Rugae Following Orthopedic Treatment Using Rapid Maxillary Expander and Facemask

2020 ◽  
Vol 47 (2) ◽  
pp. 167-175
Author(s):  
Sehee Park ◽  
Namki Choi ◽  
Seonmi Kim
Keyword(s):  
Pediatric Patients ◽  
Transverse Dimension ◽  
Reference Area ◽  
Maxillary Expansion ◽  
Hard Tissue ◽  
Orthopedic Treatment ◽  
Anatomical Changes ◽  
The Third ◽  
Palatal Rugae ◽  
Tissue Movement

The purpose of this study was to determine whether the palatal rugae could be used as an appropriate reference area for serial model superimposition following Rapid maxillary expansion(RME) and facemask treatment.<br/>A total of 52 pediatric patients who had undergone RME and facemask treatment were selected. Palate and palatal rugae in the pre- and post- treatment casts from the patients were measured.<br/>In spite of dentoalveolar changes occurred by RME and facemask, anteroposterior changes in palate and palatal rugae were not significant. Anatomical changes of palate and palatal rugae were mostly shown in the transverse dimension. The soft tissue of the palatal rugae stretches in adaptation to hard tissue movement. Among the evaluated landmarks, the medial point of the third palatal rugae seemed to be the most stable.<br/>The observed alterations in the palatal rugae demonstrated the potential of medial points of third palatal rugae as a reference point in model superimpositions to evaluate dental movement within the maxillary arch following RME and facemask treatment.

scholarly journals Immediate and late follow-up effects of class III early correction in cleft lip and palate patients treated with maxillary protraction

2020 ◽  
Vol 49 ◽  
Author(s):  
Carolina Mazon MIRANDA ◽  
Rodrigo Matos de SOUZA ◽  
Giovana Cherubini VENEZIAN ◽  
Cristina FRANZINI ◽  
William CUSTODIO
Keyword(s):  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Class Iii ◽  
Maxillary Expansion ◽  
Maxillary Protraction ◽  
Chi Squared ◽  
Skeletal Pattern ◽  
Pre Treatment ◽  
The Stability

Abstract Introduction There is no consensus about the immediate and latte follow-up effects of maxillary protraction in cleft lip and palate patients. Objective To evaluate the stability of Class III early treatment in cleft lip and palate patients through maxillary expansion and protraction. Material and method The sample consists in three lateral cephalometric radiographs of 28 patients (mean pre-treatment age of 6.7±1.8 years) who presented cleft lip and palate and were treated with maxillary expansion and Petit facial mask. The angular (SNA, SNB, ANB, SN.GoGn, FMA, Z Angle) and linear (overjet, Co-A, Co-Gn, Nperp-A, Nperp-Pg, AO-BO) cephalometric measures were evaluated through the Dolphin® software, in three moments: T0 (initial), T1 (after treatment), and T2 (follow-up). Data were submitted to the analysis of variance (ANOVA) and Tukey-Kramer test. The correlation between cephalometric measures and patient’s age was determined by Pearson’s chi-squared test. Result The SNA, ANB, and AO-BO measures increased considerably (p<0.05), and they did not present any differences compared to the initial ones after the follow-up time. The overjet measure increased (p<0.05) after treatment and, even with its decrease at the follow-up time, it was still higher than at the beginning (p<0.05). The Z angle showed improvement with treatment and remained stable at the follow-up time. Conclusion After treatment (maxillary expansion associated with protraction), there was a skeletal pattern improvement. During the follow-up period, those alterations decreased to a measure close to the beginning. There was an improvement in the dental pattern and facial profile that continued in the follow-up period.

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