scholarly journals Rapid maxillary expansion effects in Class II malocclusion: A systematic review

2015 ◽  
Vol 85 (6) ◽  
pp. 1070-1079 ◽  
Author(s):  
Murilo Fernando Neuppmann Feres ◽  
Hasnain Raza ◽  
Adel Alhadlaq ◽  
Tarek El-Bialy
Keyword(s):  
Systematic Review ◽  
Relevant Literature ◽  
Class Ii ◽  
Rapid Maxillary Expansion ◽  
Mixed Dentition ◽  
Qualitative Assessment ◽  
Cochrane Library ◽  
Control Group ◽  
Class Ii Malocclusion ◽  
Maxillary Expansion

ABSTRACT Objective:  To evaluate the effectiveness of rapid maxillary expansion (RME) on the sagittal dental or skeletal parameters of growing children with Class II malocclusion. Materials and Methods:  A systematic review intended to identify relevant literature was conducted. The search was performed on Medline, Embase, Cochrane Library, and Scopus databases. Reference lists of the included articles were also screened for relevant documents. The qualitative assessment was performed according to the Methodological Index for Non-Randomized Studies (MINORS) tool, and the resultant data were grouped and analyzed concerning dental and skeletal sagittal effects of RME. Results:  Of 25 screened studies, seven articles met eligibility criteria and were included. Study samples were observed during mixed dentition stage and characterized as having either Class II dental malocclusion or skeletal discrepancy. None of the included studies was a randomized clinical trial. Included controlled studies presented several inadequacies related to control group or lacked appropriate comparative statistical analysis. Besides being frequently based on deficient methodology, dental and skeletal sagittal effects of RME were either controversial or lacked clinical relevance. Conclusion:  The effect of RME on the sagittal dimension of Class II malocclusions has not been proved yet. Future randomized controlled clinical trials are still needed to definitely address this question.

scholarly journals Molar Changes with Cervical Headgear Alone or in Combination with Rapid Maxillary Expansion

2008 ◽  
Vol 78 (5) ◽  
pp. 847-851 ◽  
Author(s):  
Marcel Marchiori Farret ◽  
Eduardo Martinelli S. de Lima ◽  
Vanessa Pereira Araújo ◽  
Susana Maria Deon Rizzatto ◽  
Luciane Macedo de Menezes ◽  
...  
Keyword(s):  
Class Ii ◽  
Rapid Maxillary Expansion ◽  
Control Group ◽  
Maxillary Expansion ◽  
Lateral Cephalograms ◽  
Cervical Traction ◽  
Permanent Molars ◽  
Group 2 ◽  
First Permanent Molars ◽  
Group 1

Abstract Objective: To test the hypothesis that there is no difference in the distal movement of the maxillary first permanent molars when cervical headgear is used alone or in combination with rapid maxillary expansion. Materials and Methods: The sample was composed of 36 subjects (aged 9 to 13 years), treated in the Faculty of Dentistry, Pontifícia Universidade Cat;aaolica, Rio Grande do Sul, Brazil. The individuals were in good health and in their pubertal growth period. All had Class II division 1 malocclusion. The patients were divided into two groups: group 1 (22 subjects), Class II, with a normal transverse maxilla treated with cervical traction headgear (HG) 400 g 12 h/d, and group 2 (14 subjects), Class II maxillary transverse deficiency treated with rapid maxillary expansion plus cervical traction headgear (RME + HG). An additional group 3 (17 subjects) served as a control group and included individuals with the same characteristics. All subjects had two lateral cephalograms: initial (T1) and progress (T2), taken 6 months later. Differences between T1 and T2 were compared with the Student's t-test, and three groups were compared by the analysis of variance and Tukey multiple comparison test. Results: Results showed greater distal tipping and greater distal movement of the first permanent molars in group 1 (HG) than in group 2 (RME + HG), P < .05. No extrusion of first permanent molar occurred in either group (P > .05). Conclusion: The hypothesis was rejected. Cervical traction headgear alone produced greater distal movement effects in maxillary first permanent molars when compared with rapid maxillary expansion associated with cervical headgear.

scholarly journals THEEFFICIENCY OF ORTHODONTIC TREATMENT OF CLASSII MALOCCLUSION IN CHILDREN WITH β -THALASSEMIA MAJO

2021 ◽  
Vol 11 (1) ◽  
pp. 143-146
Author(s):  
Ramida Shadlinskaya ◽  
Zaur Novruzov
Keyword(s):  
Orthodontic Treatment ◽  
Thalassemia Major ◽  
Class Ii ◽  
Main Group ◽  
Mixed Dentition ◽  
Effective Length ◽  
Control Group ◽  
Class Ii Malocclusion ◽  
Twin Block ◽  
Pretreatment Assessment

Aims: Evaluation of the effectiveness of orthodontic treatment of Class II malocclusion with the Twin-block appliance in children withβ-thalassemia major. Methods: The study was conducted with 49 patients with Class II malocclusion aged 10-14 years. The control group included 23 healthy patients. The main group included 26 patients with β-thalassemia major. Patients had received orthodontic treatment with a Twin-block appliance. The duration of orthodontic treatment was 1.5–2 years. Results: In both groups, a statistically significant increase in the SNB angle was observed. Subsequently, the ANB angle was normalized. The effective length of the maxilla growing and mandibular length increasing was observed. Overjet distance is decreased due to favorable torque changes. Pretreatment assessment revealed that overbite was smaller in children with β-thalassemia major. As the effect of orthodontic treatment, statistically, significant changes were observed on both overjet and overbite distances (p <0.001). Conclusions: Orthodontic treatment of β-thalassemia major of patients with Twin-block appliance in mixed dentition stage is effective in improving inter arch relationships and the orofacial functions.

scholarly journals Mandibular dental arch short and long-term spontaneous dentoalveolar changes after slow or rapid maxillary expansion: a systematic review

2017 ◽  
Vol 22 (3) ◽  
pp. 55-63 ◽  
Author(s):  
Arthur César de Medeiros Alves ◽  
Olga Benário Vieira Maranhão ◽  
Guilherme Janson ◽  
Daniela Gamba Garib
Keyword(s):  
Systematic Review ◽  
Cochrane Library ◽  
Control Group ◽  
Dental Arch ◽  
Maxillary Expansion ◽  
Eligibility Criteria ◽  
Double Blind ◽  
Short And Long Term ◽  
Blind Search

ABSTRACT Objective: The aim of this systematic review was to analyze the short and long-term spontaneous dentoalveolar changes of the mandibular dental arch after slow (SME) or rapid (RME) maxillary expansion in the mixed and early permanent dentitions. Methods: An electronic search was performed in the following databases: PubMed/Medline, Cochrane Library, Scopus, Embase and Web of Science. Eligibility criteria for article selection included randomized controlled trials and prospective studies written in English, with no restriction of year of publication, involving patients who underwent SME or RME during the mixed or early permanent dentitions. A double-blind search of articles was performed by two reviewers. Initially, the title and the abstract of the studies were read, and their references were also hand-searched for possible missing studies. A methodological quality scoring scale was used to analyze the selected articles. Results: The search retrieved 373 articles, but only 6 were selected for review after application of the eligibility and exclusion criteria. Non-clinically significant spontaneous dentoalveolar changes of approximately 1mm were found in the mandibular dental arch in the short and long-term, after slow or rapid maxillary expansions. Furthermore, no significant differences were found between treated and control groups. Conclusions: There is enough evidence to conclude that negligible short and long-term spontaneous dentoalveolar changes tend to occur in the mandibular dental arch after SME or RME in the mixed and early permanent dentitions. More randomized studies with appropriate control group are required to better evaluate this issue.

scholarly journals Prediction of Class II improvement after rapid maxillary expansion in early mixed dentition

2017 ◽  
Vol 18 (1) ◽  
Author(s):  
Alberto Caprioglio ◽  
Chiara Bergamini ◽  
Lorenzo Franchi ◽  
Nicolò Vercellini ◽  
Piero Antonio Zecca ◽  
...  
Keyword(s):  
Class Ii ◽  
Rapid Maxillary Expansion ◽  
Mixed Dentition ◽  
Maxillary Expansion

scholarly journals Glenoid Fossa Position in Class II Malocclusion Associated with Mandibular Retrusion

2008 ◽  
Vol 78 (5) ◽  
pp. 808-812 ◽  
Author(s):  
Veronica Giuntini ◽  
Laura De Toffol ◽  
Lorenzo Franchi ◽  
Tiziano Baccetti
Keyword(s):  
Nonparametric Test ◽  
Class Ii ◽  
Mixed Dentition ◽  
Control Group ◽  
Diagnostic Feature ◽  
Class Ii Malocclusion ◽  
Glenoid Fossa ◽  
Female Age ◽  
Vertical Relationships ◽  
Mandibular Retrusion

Abstract Objective: To assess the position of the glenoid fossa in subjects with Class II malocclusion associated with mandibular retrusion and normal mandibular size in the mixed dentition. Materials and Methods: A sample of 30 subjects (16 male, 14 female), age 9 years ± 6 months, with skeletal and dental Class II malocclusion associated with mandibular retrusion, normal skeletal vertical relationships, and normal mandibular dimensions, was compared with a matched group of 37 subjects (18 male, 19 female) with skeletal and dental Class I relationships. The comparisons between the Class II group and the control group on the cephalometric measures for the assessment of glenoid fossa position were performed by means of a nonparametric test for independent samples (Mann-Whitney U-test, P &lt; .05). Results: Subjects with Class II malocclusion presented with a significantly more distal position of the glenoid fossa, when compared with the control group as measured by means of three parameters (GF-S on FH, GF-Ptm on FH, and GF-FMN). Conclusions: A posteriorly displaced glenoid fossa is a possible diagnostic feature of Class II malocclusion associated with mandibular retrusion. An effective cephalometric measurement to evaluate glenoid fossa position is the distance from the glenoid fossa to the frontomaxillonasal suture (GF-FMN).

scholarly journals Transverse effects on the nasomaxillary complex one year after rapid maxillary expansion as the only intervention: A controlled study

2014 ◽  
Vol 19 (5) ◽  
pp. 79-87 ◽  
Author(s):  
Carolina da Luz Baratieri ◽  
Maheus Alves Jr ◽  
Claudia Trindade Mattos ◽  
Geórgia Wain Thi Lau ◽  
Lincoln Issamu Nojima ◽  
...  
Keyword(s):  
Nasal Cavity ◽  
Treated Group ◽  
Rapid Maxillary Expansion ◽  
Mixed Dentition ◽  
Controlled Study ◽  
Control Group ◽  
Maxillary Expansion ◽  
Treatment Onset ◽  
One Year ◽  
Base Width

The aim of this study was to assess by means of cone-beam computed tomography (CBCT) scans the transverse effects on the nasomaxillary complex in patients submitted to rapid maxillary expansion (RME) using Haas expander in comparison to untreated individuals. This prospective controlled clinical study assessed 30 subjects (18 boys and 12 girls) with mixed dentition and during pubertal growth. The treated group was submitted to RME with Haas expander, retention for six months and a six-month follow-up after removal. The control group matched the treated group in terms of age and sex distribution. CBCT scans were taken at treatment onset and one year after the expander was activated. Maxillary first molars (U6) width, right and left U6 angulation, maxillary alveolar width, maxillary basal width, palatal alveolar width, palatal base width, right and left alveolar angulation, palatal area, nasal base width, nasal cavity width and inferior nasal cavity area on the posterior, middle and anterior coronal slices were measured with Dolphin Imaging Software(r) 11.5, except for the first two variables which were performed only on the posterior slice. All transverse dimensions increased significantly (P < 0.05) in the treated group in comparison to the control, except for alveolar angulation and inferior nasal cavity area (P > 0.05). Results suggest that increase of molar, maxillary, palatal and nasal transverse dimensions was stable in comparison to the control group one year after treatment with RME.

A Functional Appliance System for the Correction of Class II Relationships

1989 ◽  
Vol 16 (3) ◽  
pp. 169-176 ◽  
Author(s):  
M. J. Trenouth
Keyword(s):  
Case Report ◽  
Class Ii ◽  
Rapid Maxillary Expansion ◽  
Posterior Arch ◽  
Class Ii Malocclusion ◽  
Maxillary Expansion ◽  
Functional Appliance ◽  
Twin Block ◽  
Arch Width ◽  
Removable Appliance

A technique is described for the correction of Class II malocclusion involving a functional appliance and consisting of three phases. 1. Adjustment of posterior arch width and dental alignment, using semi-rapid maxillary expansion by means of an upper removable appliance, to co-ordinate the anticipated positions for the arches. 2. Correction of the Class II dental relationships using a modification of the twin-block functional appliance. 3. Retention, using an upper removable appliance with a very steep anterior bite plane. The technique is illustrated by a case report.

scholarly journals Effects of cervical headgear appliance: a systematic review

2015 ◽  
Vol 20 (4) ◽  
pp. 76-81 ◽  
Author(s):  
Fernanda Pinelli Henriques ◽  
Guilherme Janson ◽  
Jose Fernando Castanha Henriques ◽  
Daniela Cubas Pupulim
Keyword(s):  
Systematic Review ◽  
Web Of Science ◽  
Class Ii ◽  
Class Ii Malocclusion ◽  
Inclusion Criteria ◽  
Maxillary Expansion ◽  
High Quality ◽  
Maxillary Molars ◽  
Division 1 ◽  
Clear Description

OBJECTIVE: Although much has been investigated about the effects of cervical headgear, there remains some controversy. Therefore, the objective of this systematic review is to disclose the actual effects of the cervical headgear appliance, based on articles of relevant quality.METHODS: A literature review was conducted using PubMed, Web of Science, Embase, Scopus and Cochrane databases. Inclusion criteria consisted of human studies written in English; published between 1970 and 2014; in which only the cervical headgear was used to correct Class II malocclusion; prospective or retrospective; with a clear description of cervical headgear effects; with a sample size of at least 15 individuals. No comparative studies, clinical cases or cases with dental extractions were included and the sample should be homogeneous.RESULTS: Initially, 267 articles were found. A total of 42 articles were selected by title and had their abstracts read. Finally, 12 articles were classified as with high quality and were used in this systematic review.CONCLUSIONS: The cervical headgear appliance proved efficient to correct Class II, Division 1 malocclusion. Its effects consisted in correction of the maxillomandibular relationship by restriction of maxillary anterior displacement; distalization and extrusion of maxillary molars; and slight maxillary expansion.

scholarly journals Is alternate rapid maxillary expansion and constriction an effective protocol in the treatment of Class III malocclusion? A systematic review

2016 ◽  
Vol 21 (6) ◽  
pp. 34-42 ◽  
Author(s):  
Matheus Melo Pithon ◽  
Nathalia de Lima Santos ◽  
Camila Rangel Barreto dos Santos ◽  
Felipe Carvalho Souza Baião ◽  
Murilo Costa Rangel Pinheiro ◽  
...  
Keyword(s):  
Systematic Review ◽  
Early Treatment ◽  
Rapid Maxillary Expansion ◽  
Risk Of Bias ◽  
Low Risk ◽  
In Vivo Studies ◽  
Cochrane Library ◽  
Class Iii ◽  
Class Iii Malocclusion ◽  
Maxillary Expansion

ABSTRACT Introduction: the treatment of Class III malocclusion in early age is one of the greatest challenges for orthodontists, and the establishment of more effective treatment method is a constant concern for these professionals. Thus, the objective of this systematic review is to verify the effectiveness of the therapy protocol for alternate rapid maxillary expansion and constriction (Alt-RAMEC) in the early treatment of Class III malocclusion. Methods: searches were performed in the following electronic databases: Cochrane Library, Medline (EBSCO and PubMed), SciELO, LILACS and Scopus. The following inclusion criteria were used: in vivo studies conducted with early intervention (patient in craniofacial development phase) with the use of the Alt-RAMEC protocol. Reviews, case reports, editorials, and studies with syndromic patients or under use of systemic drug were excluded. Duplicates were also excluded. The studies were assessed for methodological quality using the Cochrane tool for assessment of risk of bias, and classified as high or low risk of bias. Results: 53 articles were found. Duplicates exclusion was thus performed and 35 articles remained. After inclusion analysis, only 5 matched the criteria. Two articles were classified as low risk of bias and three as high risk of bias. It was observed that the Alt-RAMEC enable protraction in less time and with better results, promoting greater effectiveness in the protraction treatment of Class III malocclusion. Conclusions: Although there is positive evidence of the effectiveness of early treatment with the Alt-RAMEC protocol in patients with Class III malocclusion, further studies are needed to confirm its effectiveness using long-term methodology.

scholarly journals Early Orthodontic Treatments of Unilateral Posterior Crossbite: A Systematic Review

2020 ◽  
Vol 10 (1) ◽  
pp. 33
Author(s):  
Francesco Caroccia ◽  
Francesco Moscagiuri ◽  
Luigi Falconio ◽  
Felice Festa ◽  
Michele D’Attilio
Keyword(s):  
Systematic Review ◽  
Clinical Trials ◽  
Randomized Clinical Trials ◽  
Scientific Evidence ◽  
Treatment Strategies ◽  
Mixed Dentition ◽  
Control Group ◽  
Maxillary Expansion ◽  
Posterior Crossbite ◽  
Quad Helix

We aimed to report an update of the systematic review by Petrén et al. (2003). The objective was to evaluate how orthodontic treatments can affect unilateral posterior crossbite (UPXB) in primary and early mixed dentition. Several databases were consulted, and articles published between January 2002 and March 2020 were selected. This review examines the following studies: randomized clinical trials, prospective and retrospective studies with concurrent untreated or normal control groups, and clinical trials comparing at least two treatment strategies. Among the 1581 articles retrieved from the searches, 11 studies were included. Quad-helix (QH) and expansion plate (EP) appliances were compared in three studies. One study compared rapid maxillary expansion (RME) treatment anchored on primary dentition otherwise on permanent molars. One study compared RME and a modified RME with arms extended until deciduous canine and EP. Four studies evaluated the effects of expansion appliances compared with a control group. Compared with the previous review, the quality of the included studies is higher. However, heterogeneity of treatments, different strategies in measurements, lack of a similar follow-up length, and absence of a cost-effectiveness analysis preclude the possibility of providing reliable scientific evidence on the most effective UPXB treatment in primary and early mixed dentition.

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