scholarly journals Comparative dimensional tomographic study of the mandibular condyle of individuals with transverse maxillary deficiency

2017 ◽  
Vol 15 (4) ◽  
pp. 242
Author(s):  
Andréa Guedes Barreto Gonçales ◽  
Victor Tieghi Neto ◽  
Eduardo Sanches Gonçales ◽  
Ana Lúcia Álvares Capelozza
Keyword(s):  
Computed Tomography ◽  
Statistical Analysis ◽  
Mandibular Condyle ◽  
Cone Beam ◽  
Maxillary Expansion ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion ◽  
Maxillary Deficiency ◽  
Posterior Anterior ◽  
Paired T Test

Transverse maxillary deficiency is characterized by posterior uni or bilateral crossbite, crowded and rotated teeth, as well as high palate. Its treatment in adult individuals is surgically assisted rapid palatal expansion. The aim of this study was to verify the occurrence of dimensional alterations in the mandibular condyles of patients with TMD submitted to surgically assisted maxillary expansion. Measurements of the mandibular condyles using the DISTANCE tool in cone beam computed tomography iCat software were performed. The values obtained were submitted to statistical analysis by the paired t-test and the results showed statistically significant dimensional reduction in the axial posterior-anterior lateral (-0.74mm), axial posterior-anterior lateral left (-0.90mm) and coronal medium right (-1.24mm) dimensions. The coronal inferior (1.13mm), coronal inferior left (1.78mm) and coronal superior-inferior right (0.76mm) measurements showed statistically significant dimensional increase. The results allowed us to conclude that dimensional alterations occurred in the mandibular condyles in individuals with maxillary transversal deficiency that underwent surgically assisted rapid palatal expansion (SAPE), which can be understood by remodeling, since they are characterized by dimensional increase or reduction, depending on the location where the measurement was performed.

scholarly journals Efficacy of Miniscrew-Assisted Rapid Palatal Expansion (MARPE) in late adolescents and adults: a systematic review and meta-analysis

2021 ◽  
Author(s):  
Aldin Kapetanović ◽  
Christina I Theodorou ◽  
Stefaan J Bergé ◽  
Jan G J H Schols ◽  
Tong Xi
Keyword(s):  
Systematic Review ◽  
Success Rate ◽  
Observational Studies ◽  
Risk Of Bias ◽  
Late Adolescents ◽  
Maxillary Expansion ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion ◽  
Adolescents And Adults ◽  
Maxillary Deficiency

Summary Background Miniscrew-Assisted Rapid Palatal Expansion (MARPE) is a non-surgical treatment for transverse maxillary deficiency. However, there is limited evidence concerning its efficacy. Objectives This systematic review aims to evaluate the efficacy of MARPE in late adolescents and adults by assessing success rate and skeletal and dental transverse maxillary expansion, as well as treatment duration, dental and periodontal side effects and soft tissue effects. Search methods Seven electronic databases were searched (MEDLINE, Embase, Cochrane Library, Web of Science, Scopus, ProQuest and ClinicalTrials.gov) without limitations in November 2020. Selection criteria Randomized and non-randomized clinical trials and observational studies on patients from the age of 16 onwards with transverse maxillary deficiency who were treated with MARPE and which included any of the predefined outcomes. Data collection and analysis Inclusion eligibility screening, data extraction and risk of bias assessment were performed independently in duplicate. When possible, exploratory meta-analyses of mean differences (MDs) with their 95% confidence intervals (CIs) were conducted, followed by the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) analysis of the evidence quality. Results Eight articles were included: two prospective and six retrospective observational studies. One study had a moderate risk of bias, whereas seven studies had a serious risk of bias. GRADE quality of evidence was very low. MARPE showed a high success rate (mean: 92.5%; 95%CI: 88.7%–96.3%), resulting in a significant skeletal width increase (MD: 2.33 mm; 95%CI: 1.63 mm–3.03 mm) and dental intermolar width increase (MD: 6.55 mm; 95%CI: 5.50 mm–7.59 mm). A significant increase in dental tipping, a decrease in mean buccal bone thickness and buccal alveolar height, as well as nasal soft tissue change was present (P < 0.05). The mean duration of expansion ranged from 20 to 126 days. Limitations One of the main drawbacks was the lack of high-quality prospective studies in the literature. Conclusions and implications MARPE is a treatment modality that is associated with a high success rate in skeletal and dental maxillary expansion. MARPE can induce dental and periodontal side effects and affect peri-oral soft tissues. Given the serious risk of bias of the included studies, careful data interpretation is necessary and future research of higher quality is strongly recommended. Registration PROSPERO (CRD42020176618). Funding No grants or any other support funding were received.

scholarly journals MODERN PERSPECTIVES ON RAPID PALATAL EXPANSION

2021 ◽  
Vol 9 (5) ◽  
pp. 497-500
Author(s):  
Kinnari Markana ◽  
Keyword(s):  
Transverse Dimension ◽  
Rapid Maxillary Expansion ◽  
Maxillary Expansion ◽  
Negative Effects ◽  
Palatal Expansion ◽  
Beneficial Effects ◽  
Rapid Palatal Expansion ◽  
Mini Implants ◽  
Maxillary Deficiency ◽  
Skeletal Expansion

Maxillary deficiency in the transverse dimension is a common problem in children. The conventional management of such malocclusion is with conventional rapid maxillary expansion. The beneficial effects of such an orthodontic therapy are explained in detail in the literature. But there are also negative effects of conventional rapid maxillary expansion. Thus, the improvements in the methods of expansion has led to discovery of miniscrew assisted rapid palatal expansion. The miniscrew assisted rapid palatal expansion are supported by mini implants and thus enable better skeletal expansion of maxilla. This article will discuss the favourable effects, negative effects, and clinical uses of conventional and miniscrew assisted rapid palatal expansion.

scholarly journals Comparison of the surgically assisted orthodontic rehabilitation techniques of patients with transversal maxillary defficiency

2020 ◽  
Vol 19 (5-6) ◽  
pp. 91-97
Author(s):  
Andrey V. Nikolaev ◽  
Sergey A. Popov ◽  
Elena A. Satygo ◽  
Mikhail A. Postnikov
Keyword(s):  
Computed Tomography ◽  
Tooth Crown ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion ◽  
Maximal Amount ◽  
Computed Tomography Scans ◽  
Treatment Onset ◽  
Maxillary Deficiency

The article considers comparison of the outcomes of surgically assisted rapid palatal expansion with the use of tooth-borne and bone-borne expansion appliances in patients with transversal maxillary deficiency. 76 computed tomography scans of 38 patients (24 with bone-borne anchorage, 14 with tooth-borne ones) were studied. Examination of the expansion was performed before the treatment onset and after the activation of the screw of the distraction apparatus. Expansion was evaluated in the areas of canines, premolars and first molars. The maximal amount of the vestibular tooth crown inclination was revealed in premolars with tooth-borne appliances. The use of bone-borne appliances allows to achieve the greatest effect of tooth body shift in a vestibular direction.

Expansão Maxilar Apoiada em Mini-implantes (MARPE) – guia prático para planejamento e instalação

2020 ◽  
Vol 13 (52) ◽  
pp. 10-24
Author(s):  
Luciana Quintanilha Pires Fernandes ◽  
Jonas Capelli Junior ◽  
José Augusto Mendes Miguel
Keyword(s):  
Cone Beam ◽  
Growth Spurt ◽  
Maxillary Expansion ◽  
Pubertal Growth Spurt ◽  
Palatal Expansion ◽  
Posterior Crossbite ◽  
Rapid Palatal Expansion ◽  
Pubertal Growth ◽  
Division 1 ◽  
The Right

Rapid maxillary expansion (RME) is an orthodontic treatment alternative that aims to increase the transverse direction of the maxilla by separating the median palatine suture (MPS). miniscrew-assisted rapid palatal expansion (MARPE) aims to enhance the orthopedic effects of RME through skeletal anchorage. Thus, the aim of this article is to provide a guide for MARPE planning in cone beam computed tomography (CBCT) and for installation of the expander device with this technique. In addition, a case report of a Caucasian male patient, 16 years and 3 months old with Class II malocclusion, division 1 right subdivision, posterior crossbite of the right side and atresic upper arch in the post-pubertal growth spurt phase will be presented. The patient was treated with MARPE for a period of 5 weeks, when overcorrection of crossbite, correction of maxillary atresia, opening of MPS and creation of a transient diastema between the upper incisors were achieved, evidencing the success of the MARPE technique in a post-pubertal growth spurt patient.

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