scholarly journals The Relation between the Position of Maxilla and Rapid Maxillary Expansion Failure

2021 ◽  
Vol 7 (2) ◽  
pp. 49-54
Author(s):  
Fatih Celebi
Keyword(s):  
Multiple Logistic Regression Analysis ◽  
Vertical Direction ◽  
Late Adolescence ◽  
Rapid Maxillary Expansion ◽  
Growth Potential ◽  
Maturation Stage ◽  
Maxillary Expansion ◽  
Palatal Expansion ◽  
Anterior Position ◽  
Cervical Vertebral Maturation

Introduction: The palatal expansion may be a challenging treatment in late adolescents who has passed the peak of skeletal growth. The success rate of palatal expansion in these patients decreases due to decreased growth potential. Aim: It was aimed to determine any clinical/radiological indicator to be used as a predictor in the failure of rapid maxillary expansion (RME) in late adolescence. Materials and methods: The records of the patients who had undergone RME therapy between the years 2013-2019 were evaluated. The patients were allocated into two groups according to expansion success: successful (S-RME) and failed (F-RME) RME groups. Fifty systemically healthy patients in the cervical vertebral maturation stage 5/6 were enrolled (35 females, 15 males). Eleven patients were (10 females, one male) in the F-RME group, and 39 patients were (25 females, 14 males) in the S-RME group. Five cephalometric (related to maxillary position) and three clinical variables (age, gender, and CVMS) were evaluated. Variables were subjected to multiple logistic regression analysis for setting a prediction model and detecting predictors. Results: Patients with CVMS-6 had a 16.8-fold higher risk of palatal expansion failure than CVMS-5. 1 mm anterior position of PNS increased the risk of failure 2.9 times. 1 mm reduction in the distance between the PNS and cranial base in the vertical direction increased 60% the risk of RME failure. Conclusion: The CVM stage of the patient, along with the vertical and sagittal position of the PNS, were found to be the possible predictors of RME success in late adolescence.

RAPID PALATAL EXPANSION AND ITS FEATURES

ASJ. ◽  
2020 ◽  
Vol 2 (40) ◽  
pp. 20-22
Author(s):  
A.K. Al Dzhafari ◽  
S.A. Ulyanovskaya
Keyword(s):  
Rapid Maxillary Expansion ◽  
Maxillary Expansion ◽  
Maxillofacial Region ◽  
Posterior Teeth ◽  
Anatomical Features ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion ◽  
Congenital Deformities ◽  
Upper Jaw ◽  
Mid Palatal Suture

Rapid Maxillary expansion or palatal expansion as it is sometimes called, occupies unique niche in dentofacial therapy. Rapid Maxillary expansion (RME) is a skeletal type of expansion that involves the separation of the mid-palatal suture and movement of the maxillary shelves away from each other. RME effects the maxillary complex, palatal vaults, maxillary anterior and posterior teeth, adjacent periodontal structures to bring about an expansion in the maxillary arch. Morphogenesis and anatomical features of the upper jaw determine the choice of the method of rapid palatal expansion with narrowing of the upper dentition, as an effective method for eliminating congenital deformities of the maxillofacial region. The majority of dental transverse measurements changed significantly as a result of RME. The maturity of the maxillofacial structures determines the timing and degree of success of rapid palatal dilatation treatment.

scholarly journals Condylar Changes in Children with Posterior Crossbite after Maxillary Expansion: Tridimensional Evaluation

Children ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 38
Author(s):  
Rosamaria Fastuca ◽  
Helga Turiaco ◽  
Fausto Assandri ◽  
Piero A. Zecca ◽  
Luca Levrini ◽  
...  
Keyword(s):  
Rapid Maxillary Expansion ◽  
3D Analysis ◽  
Maxillary Expansion ◽  
3D Slicer ◽  
Palatal Expansion ◽  
Posterior Crossbite ◽  
Rapid Palatal Expansion ◽  
Before And After ◽  
Condylar Position ◽  
Caucasian Patients

(1) Background: To investigate condylar position in subjects with functional posterior crossbite comparing findings before and after rapid maxillary expansion (RME) treatment through 3D analysis; (2) Methods: Thirty-two Caucasian patients (14 males, mean age 8 y 8 m ± 1 y 2 m; 18 females mean age 8 y 2 m ± 1 y 4 m) with functional posterior crossbite (FPXB) diagnosis underwent rapid palatal expansion with a Haas appliance banded on second deciduous upper molars. Patients’ underwent CBCT scans before rapid palatal expansion (T0) and after 12 months (T1). The images were processed through 3D slicer software; (3) Results: The condylar position changes between T1 and T0 among the crossbite and non-crossbite sides were not statistically significant, except for the transversal axis. At T1, the condyles moved forward (y axis) and laterally (x axis), they also moved downward (z axis) but not significantly; (4) Conclusions: Condilar position in growing patients with functional posterior crossbite did not change significantly after rapid maxillary expansion.

Treatment of Unilateral Cleft Lip and Palate Patient With Intraoral Tooth Tissue Borne Distractor and Facemask Therapy: A Case Report

2021 ◽  
pp. 105566562199336
Author(s):  
Akansha Bansal Agrawal ◽  
Harshavardhan Kidiyoor ◽  
Anand K. Patil Morth
Keyword(s):  
Case Report ◽  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Face Mask ◽  
Rapid Maxillary Expansion ◽  
Growth Potential ◽  
Maxillary Expansion ◽  
Long Term Stability ◽  
Tooth Tissue

This case report demonstrates the successful use of intraoral distractor/hygenic rapid expander (HYRAX) for rapid maxillary expansion in anteroposterior direction with an adjunctive use of face mask therapy for anterior orthopedic traction of maxillary complex in a cleft patient with concave profile. The patient was a 13-year-old girl who reported with a chief complaint of backwardly positioned upper jaw and a severely forward positioned lower jaw. Therefore, a treatment was chosen in which acrylic bonded rapid maxillary expansion was done with tooth tissue borne intraoral distractor/HYRAX having a different activation schedule along with Dr Henri Petit facemask to treat maxillary retrognathism. As a result, crossbite got corrected and attained a positive jet with no bone loss in cleft area over a period of 5 months which was followed by fixed mechanotherapy achieving a well settled occlusion in 1 year. After completion of expansion and fixed mechanotherapy, ANB became +1 post-treatment which was −4 pretreatment. The prognathic profile was markedly improved by expansion and taking advantage of the remaining growth potential, thus minimizing the chances of surgery later in life. This provided a viable alternative to orthognathic surgery with good long-term stability.

scholarly journals Long-Term Results of a Modified Removable Expansion Plate to Increase Arch Length: A Series of 10 Cases

2020 ◽  
Vol 54 (4) ◽  
pp. 374-381
Author(s):  
Alka M. Banker ◽  
Rahul P. Muchhadia ◽  
Bhagyashree B. Desai ◽  
Priyanka A. Shah
Keyword(s):  
Transverse Dimension ◽  
Rapid Maxillary Expansion ◽  
Permanent Dentition ◽  
Long Term Results ◽  
Maxillary Expansion ◽  
Fixed Appliance ◽  
Palatal Expansion ◽  
Fixed Appliances ◽  
Complexity Cost

Crowding, protrusion, and class II or end-on occlusion are malocclusions frequently associated with a narrow transverse dimension. The goal of expansion is to reduce the need for extractions in permanent dentition through elimination of arch length discrepancies as well as correction of bony base imbalances. Gaining arch length makes the subsequent fixed appliance treatment easier and shorter. Palatal expansion is usually achieved by using fixed rapid maxillary expansion, but because of the complexity, cost, and increased laboratory steps, this step is sometimes omitted. We have modified the design and screw activation protocol of the removable Schwarz plate in such a way that it gives efficient and stable expansion as well as arch perimeter gain with simpler mechanics. We present the long-term results of 10 such cases treated with this modified expander followed by fixed appliances.

scholarly journals Efeitos da expansão rápida de maxila na audição: revisão sistemática da literatura

2016 ◽  
Vol 21 (0) ◽  
Author(s):  
Claudine Devicari Bueno ◽  
Camila Zander Neves ◽  
Pricila Sleifer ◽  
José Renato Prietsch ◽  
Erissandra Gomes
Keyword(s):  
Hearing Loss ◽  
Rapid Maxillary Expansion ◽  
Maxillary Expansion ◽  
Palatal Expansion Technique ◽  
Palatal Expansion ◽  
Expansion Technique

RESUMO Objetivo Verificar os efeitos provocados pela expansão rápida de maxila na audição. Estratégia de pesquisa Conduziu-se uma busca no mês de janeiro de 2016, usando as palavras-chave “hearing loss”, “hearing”, “rapid maxillary expansion” e “palatal expansion technique” nas bases de dados MEDLINE, SciELO e Bibliografia Brasileira de Odontologia (BBO). Critérios de seleção Foram selecionados artigos em inglês, português e espanhol, publicados até janeiro de 2016, sem limitação de data inicial, cuja abordagem metodológica referisse os efeitos da expansão rápida de maxila na audição. Resultados A estratégia de busca resultou na seleção de oito artigos, classificados como ensaios clínicos. Os estudos constataram que a expansão rápida de maxila realizada em crianças e/ou adolescentes melhora os limiares de audibilidade e as medidas de imitância acústica. Conclusão A expansão rápida da maxila provocou melhora na audição, apesar da diversidade e das limitações metodológicas dos estudos analisados.

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 Effects of rapid maxillary expansion on nasal cavity dimensions and airway resistance

2015 ◽  
Vol 2 ◽  
pp. 31-39
Author(s):  
Maria E. Tapia ◽  
Ursula Brethauer ◽  
Patricio Ulloa ◽  
Andrea Carcamo ◽  
Felipe Culaciati
Keyword(s):  
Ct Scan ◽  
Nasal Cavity ◽  
Rapid Maxillary Expansion ◽  
Maxillary Expansion ◽  
Bite Block ◽  
Oral Breathing ◽  
Palatal Expansion ◽  
Before And After ◽  
The Right ◽  
Active Anterior Rhinomanometry

Background: Rapid maxillary expansion is a common treatment for posterior cross-bites that has also shown to improve nasal breathing.Methods: Thirteen oral breather patients with posterior cross-bite were studied. Treatment consisted in rapid maxillary expansion with a fully bonded appliance including a bite-block and a hyrax expansion screw. Before and after treatment, CT scans and active anterior rhinomanometry were performed to each patient. Data was analyzed with the non-parametric Wilcoxon statistical test and correlation between palatal expansion and increase of airflow in each patient was assessed.Results: The CT scan showed that transversal dimensions were significantly increased (P<0.001) in most areas after treatment, considering the right and left side separately. Rhinomanometry also showed statistical differences (P<0.001) in all parameters studied when compared before and after treatment. Positive correlation was observed between palatal expansion and increase of airflow.Conclusions: All patients improved oral breathing habit clinically and there is also statistical evidence that the nasal cavity increased its transversal dimensions, measured by CT scan and that patients increased their airflow through the nasal cavity, measured by rhinomanometry.

scholarly journals Safety and Effects of the Rapid Maxillary Expander on Temporomandibular Joint in Subjects Affected by Juvenile Idiopathic Arthritis: A Retrospective Study

Children ◽  
2021 ◽  
Vol 8 (1) ◽  
pp. 33
Author(s):  
Andrea Abate ◽  
Davide Cavagnetto ◽  
Francesca Maria Emilia Rusconi ◽  
Paolo Cressoni ◽  
Luca Esposito
Keyword(s):  
Juvenile Idiopathic Arthritis ◽  
Nasal Cavity ◽  
Rapid Maxillary Expansion ◽  
T Test ◽  
Maxillary Expansion ◽  
Retrospective Case ◽  
Linear Measurements ◽  
Palatal Expansion ◽  
Mandibular Hypoplasia ◽  
Before And After

Background: In Juvenile Idiopathic Arthritis (JIA) temporo-mandibular joints are often affected causing skeletal and dental malocclusions. The most frequent condition is mandibular hypoplasia, that may be associated with maxillary hypoplasia. The aim of this retrospective case control study is to investigate the effects and the safety of rapid maxillary expansion (RME) in growing patients affected by JIA. It was evaluated whether RME could be performed without complications on TMJs of JIA patients using DC/TMD protocol, and naso-maxillary transversal parameters were compared with the ones obtained on healthy patients. Methods: Twenty-five patients affected by JIA that ceased to manifest TMJ (Temporo-Mandibular Joint) symptoms in the previous year were treated with RME to solve the maxillary transverse hypoplasia. Postero-anterior cephalometric tracings were collected before and after treatment; linear measurements were obtained to study maxillary and nasal cavity modifications. Data were compared to those of a similar group of twenty-five healthy patients. Paired t-test and Independent t-test were used to evaluate changes before and after treatment in each group and to perform a comparison between the groups. Results: All patients demonstrated a statistically significant increase in nasal cavity width, maxillary width and upper and lower intermolar width. No patients presented a worsening of their TMJs condition. Intragroup comparisons revealed significant changes of cephalometric measurements, but no difference was found when comparing JIA and healthy patients. Conclusions: Growing patients with JIA that ceased to show signs of active TMJ involvement for at least one year could be safely treated with RME, expecting similar benefits to those of healthy patients. Dentists and rheumatologists should be informed of safety and potential benefits of palatal expansion in JIA patients in order to improve the outcome of orthodontic treatment and reduce the indication for more invasive procedures (i.e., Surgical Assisted Rapid Maxillary Expansion).

scholarly journals Modified Hyrax for Microimplant-Assisted Rapid Palatal Expansion

2022 ◽  
pp. 030157422110562
Author(s):  
Harshikkumar Parekh ◽  
Rahul Trivedi ◽  
Falguni Mehta ◽  
Renuka Patel ◽  
Niyanta Joshi
Keyword(s):  
Surgical Procedure ◽  
Three Dimensional ◽  
Rapid Maxillary Expansion ◽  
Maxillary Expansion ◽  
Palatal Expansion ◽  
Rapid Palatal Expansion ◽  
Temporary Anchorage Device

Temporary anchorage device-assisted rapid maxillary expansion has widened the horizon to treat adults having maxillary transverse deficiency without any surgical procedure. Three-dimensional custom modifications have also been developed, but they can be expensive. A modification of Hyrax screw with the use of lingual sheaths is suggested for microimplant-assisted rapid palatal expansion, which can be an easy to fabricate in-office and economical option.

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