Retention period after treatment of posterior crossbite with maxillary expansion: a systematic review

ABSTRACT OBJECTIVE: The aim of this systematic review was to evaluate the duration of the retention period in growing patients undergoing maxillary expansion and its relation with posterior crossbite stability. METHODS: Search strategies were executed for electronic databases Cochrane Library, Web of Science, PubMed and Scopus, which were completed on January 15, 2016. The inclusion criteria included randomized, prospective or retrospective controlled trials in growing subjects with posterior crossbite; treated with maxillary expanders; retention phase after expansion; post-retention phase of at least 6 months. The exclusion criteria were anterior crossbite, craniofacial anomalies, surgery or another orthodontic intervention; case reports; author’s opinions articles, thesis, literature reviews and systematic reviews. The risk of bias of selected articles was assessed with Cochrane risk of bias tool for RCTs and Downs and Black checklist for non-RCTs. RESULTS: A total of 156 titles/abstracts was retrieved, 44 full-texts were examined, and 6 articles were selected and assessed for their methodological quality. The retention period after maxillary expansion ranged between 4 weeks and 16 months. Fixed (acrylic plate, Haas, Hyrax and quad-helix) or removable (Hawley and Hawley expander) appliances were used for retention. CONCLUSIONS: Six months of retention with either fixed or removable appliances seem to be enough to avoid relapse or to guarantee minimal changes in a short-term follow-up.

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Three-dimensional Evaluation of Dentoskeletal Changes after Posterior Cross-bite Correction by Quad-Helix or Removable Appliances

British Journal of Orthodontics ◽

10.1179/bjo.19.2.97 ◽

1992 ◽

Vol 19 (2) ◽

pp. 97-107 ◽

Cited By ~ 22

Author(s):

Bodil Boysen ◽

Kirsten La Cour ◽

Athanasios E. Athanasiou ◽

Poul E. Gjessing

Keyword(s):

Three Dimensional ◽

Maxillary Expansion ◽

Opposite Pattern ◽

Retention Period ◽

Lateral Cephalograms ◽

Removable Appliance ◽

Removable Appliances ◽

Quad Helix ◽

Molar Region

The aim of the study was to evaluate in a three-dimensional manner the dentoskeletàl changes after slow maxillary expansion. The sample consisted of 34 children with a unilateral, symmetrical posterior cross-bite. Half of the children were treated with a quad-helix and the rest with a removable appliance. Assessment of the changes was made with study casts, and frontal and lateral cephalograms, before treatment, at the end of the expansion, after a retention period of 3 months, and after a post-retention period of 3 months. The results showed that sufficient expansion of the dental arches took place in both groups. The expansion expressed in the molar region in the quad-helix group was mostly due to buccal translation of the teeth and in the removable appliance group due to buccal tipping. The quad-helix group showed somewhat greater basal expansion than the removable appliance group, though the basal expansion in both groups was rather small. A tendency towards an increase of the NL/ML angle characterized the removable appliance group, but the opposite pattern was present in the quad-helix group.

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

Dental Press Journal of Orthodontics ◽

10.1590/2177-6709.21.6.034-042.oar ◽

2016 ◽

Vol 21 (6) ◽

pp. 34-42 ◽

Cited By ~ 6

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.

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Ilioinguinal versus modified Stoppa approach for open reduction and internal fixation of displaced acetabular fractures: A Protocol for Systematic Review and Meta-Analysis

10.1101/2021.06.22.21259315 ◽

2021 ◽

Author(s):

Amit Srivastava ◽

Rajesh Kumar Rajnish ◽

Prasoon Kumar ◽

Rehan Ul Haq ◽

Ish Kumar Dhammi

Keyword(s):

Systematic Review ◽

Internal Fixation ◽

Open Reduction ◽

English Language ◽

Case Reports ◽

Risk Of Bias ◽

Cochrane Library ◽

Acetabular Fractures ◽

Anatomical Reduction ◽

Stoppa Approach

Background: The fracture of the acetabulum is one of the most challenging fractures to manage and operate for orthopaedic surgeons, to get a good surgical outcome, anatomical reduction of fractures and reconstruction of the joint is of utmost importance. To achieve a good postoperative outcome an appropriate surgical approach is necessary to achieve an anatomical reduction of fractures and fewer complications. Objective: The current review aims to compare the outcomes of the ilioinguinal versus modified Stoppa approach for open reduction and internal fixation (ORIF) of displaced acetabular fractures by analyzing the evidence from the current literature. Methods: A systematic review of the literature will be conducted in accordance with the PRISMA guidelines. The primary searches will be conducted on the Medline (PubMed), Embase, Scopus, and Cochrane Library databases, using a pre-defined search strategy. The studies of any design in the English language will be included which compared the outcomes of the ilioinguinal and modified Stoppa approach for ORIF of displaced acetabular fractures and reported at least one outcome of interest. Studies that do not compare the outcomes of the ilioinguinal and modified Stoppa approach for the treatment of displaced acetabular fractures in adults (>18 years of age), case reports, conference abstracts, posters, book chapters, review articles, biomechanical studies, technical tips, cadaveric studies, and articles not in the English language will be excluded. Both qualitative and quantitative analyses will be done. Qualitative analysis will be done using appropriate tables and diagrams. Wherever feasible, quantitative analysis to be done with the appropriate software. The risk-of-bias assessment will be done using the MINORS tool for the non-randomized comparative studies, and The Cochrane Collaboration risk-of-bias tool will be used for randomized control trials.

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Early Orthodontic Treatments of Unilateral Posterior Crossbite: A Systematic Review

Journal of Clinical Medicine ◽

10.3390/jcm10010033 ◽

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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Effectiveness of Traditional Chinese Exercise for Symptoms of Knee Osteoarthritis: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph17217873 ◽

2020 ◽

Vol 17 (21) ◽

pp. 7873

Author(s):

Ruojin Li ◽

Hongwei Chen ◽

Jiahao Feng ◽

Ying Xiao ◽

Haoyang Zhang ◽

...

Keyword(s):

Systematic Review ◽

Knee Osteoarthritis ◽

Physical Function ◽

Case Reports ◽

Meta Analysis ◽

Risk Of Bias ◽

Cochrane Library ◽

Control Group ◽

Large Sample Size ◽

Statistical Heterogeneity

Background: Growing evidences have advocated the potential benefits of traditional Chinese exercise (TCE) on symptomatic improvement of knee osteoarthritis (KOA). However, most of them have been derived from cross-sectional studies or case reports; the effectiveness of TCE therapies has not been fully assessed with a randomized control trial (RCT). In order to evaluate the combined clinical effectiveness of TCE for KOA, we conducted a systematic review and meta-analysis on the existing RCTs on KOA. Methods: A systematic search was performed in four electronic databases: PubMed, Web of Science, Cochrane Library, and EMBASE from the time of their inception to February 2020. All eligible RCTs were included in which TCE was utilized for treating KOA as compared to a control group. Two reviewers independently extracted the data and evaluated the risk of bias following the Cochrane Risk of Bias Tool for RCT. The symptoms of KOA evaluated by the Western Ontario and McMaster Universities Arthritis Index (WOMAC) and the Knee Injury and Osteoarthritis Outcome Score (KOOS) were regarded as the primary outcomes in this study. Each outcome measure was pooled by a standardized mean difference (SMD) with 95% confidence intervals (CI). A meta-analysis was applied with a random or fixed effect model for the collected data to calculate the summary SMD with 95% CI based on different statistical heterogeneity. In addition, subgroup analyses were used to investigate heterogeneity and sensitivity analysis was carried out for the results of the meta-analysis. Egger’s test and the funnel plots were used to examine the potential bias in the RCTs. Results: A total of 14 RCTs involving 815 patients with KOA were included. Compared with a control group; the synthesized data of TCE showed a significant improvement in WOMAC/KOOS pain score (SMD = −0.61; 95% CI: −0.86 to −0.37; p < 0.001), stiffness score (SMD = −0.75; 95% CI: −1.09 to −0.41; p < 0.001), and physical function score (SMD = −0.67; 95% CI: −0.82 to −0.53; p < 0.001). Conclusions: Our meta-analysis suggested that TCE may be effective in alleviating pain; relieving stiffness and improving the physical function for patients with KOA. Yet; given the methodological limitations of included RCTs in this meta-analysis; more high-quality RCTs with large sample size and long-term intervention are required to further confirm the effectiveness and underlying mechanisms of TCE for treating KOA.

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Effectiveness of Nutritional Education for Obese Older Adults With Frailty: A Systematic Review and Meta-Analysis

Innovation in Aging ◽

10.1093/geroni/igaa057.1291 ◽

2020 ◽

Vol 4 (Supplement_1) ◽

pp. 401-401

Author(s):

Yue-Heng Yin ◽

Liu Yat Justina

Keyword(s):

Systematic Review ◽

Physical Function ◽

Meta Analysis ◽

Experimental Studies ◽

Well Being ◽

Risk Of Bias ◽

Cochrane Library ◽

Nutritional Education ◽

Hand Search ◽

Education Interventions

Abstract Obesity has been shown to intensify the decline of physical function and lead to frailty. Nutrition is an important method in managing obesity and frailty, while seldom reviews have ever explored the effects of nutritional education interventions. We conducted a systematic review (PROSPERO: CRD42019142403) to explore the effectiveness of nutritional education interventions in managing body composition and physio-psychosocial parameters related to frailty. Randomized controlled trials and quasi-experimental studies were searched in CINAHL, Cochrane Library, EMBASE, MEDLINE, PsycINFO, PubMed and Scopus from 2001 to 2019. Hand search for the reference lists of included papers was conducted as well. We assessed the quality of included studies by Cochrane risk of bias tool. Meta-analyses and narrative synthesis were used to analyse the data. Two studies with low risk of bias were screened from 180 articles, which involved 177 older people with an average age of 69.69±4.08 years old. The results showed that nutritional education was significantly effective in reducing body weight and fat mass than exercises, and it was beneficial to enhancing physical function and psychosocial well-being. But the effects of nutritional education in increasing muscle strength were not better than exercises. The combined effects of nutritional education and exercises were superior than either exercises or nutritional education interventions solely in preventing the loss of lean mass and bone marrow density, and in improving physical function. Due to limited numbers of relevant studies, the strong evidence of effectiveness of nutritional education interventions on reversing frailty is still lacking.

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Impact of Vibration on the Levels of Biomarkers: A Systematic Review

The Journal of Indian Orthodontic Society ◽

10.1177/03015742211019520 ◽

2021 ◽

pp. 030157422110195

Author(s):

Ashish Agrawal ◽

TM Chou

Keyword(s):

Systematic Review ◽

Web Of Science ◽

Tooth Movement ◽

Orthodontic Tooth Movement ◽

Cochrane Collaboration ◽

Risk Of Bias ◽

Cochrane Library ◽

Inclusion Criteria ◽

Electronic Search ◽

Proquest Dissertation

Introduction: The objective of this systematic review is to assess the effect of vibrational force on biomarkers for orthodontic tooth movement. Methods: An electronic search was conducted for relevant studies (up to December 31, 2020) on the following databases: Pubmed, Google scholar, Web of Science, Cochrane Library, Wiley Library, and ProQuest Dissertation Abstracts and Thesis database. Hand searching of selected orthodontic journals was also undertaken. The selected studies were assessed for the risk of bias in Cochrane collaboration risk of bias tool. The “traffic plot” and “weighted plot” risk of bias distribution are designed in the RoB 2 tool. The 2 authors extracted the data and analyzed it. Results: Six studies fulfilled the inclusion criteria. The risks of biases were high for 4, low and some concern for other 2 studies. The biomarkers, medium, device, frequency and duration of device, as well as other data were extracted. The outcomes of the studies were found to be heterogenous. Conclusion: One study showed highly statistically significant levels of IL-1 beta with <.001. Rate of tooth movement was correlated with levels of released biomarkers under the influence of vibrational force in 3 studies, but it was found to be significant only in 1 study. It was further observed that vibration does not have any significant reduction in pain and discomfort.

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Risk of colectomy after conservative treatment of diverticulitis of the left hemicolon complicated by abdominal or pelvic abscess: protocol of a systematic review and meta-analysis

BMJ Open ◽

10.1136/bmjopen-2020-042350 ◽

2020 ◽

Vol 10 (12) ◽

pp. e042350

Author(s):

Maximilian Sohn ◽

Ayman Agha ◽

Igors Iesalnieks ◽

Anna Tiefes ◽

Alfred Hochrein ◽

...

Keyword(s):

Systematic Review ◽

Emergency Surgery ◽

Case Reports ◽

Acute Diverticulitis ◽

Meta Analysis ◽

Case Series ◽

Pelvic Abscess ◽

Risk Of Bias ◽

Cochrane Central Register ◽

Review Manager

IntroductionAcute diverticulitis of the sigmoid colon is increasingly treated by a non-operative approach. The need for colectomy after recovery from a flare of acute diverticulitis of the left colon, complicated diverticular abscess is still controversial. The primary aim of this study is to assess the risk of interval emergency surgery by systematic review and meta-analysis.Methods and analysisThe systematic review and meta-analysis will be conducted in accordance to the Preferred Reporting Items for Systematic Review and Meta-Analysis Protocols statement. PubMed/MEDLINE, Cochrane Central Register of Controlled Trials and EMBASE will be screened for the predefined searching term: (Diverticulitis OR Diverticulum) AND (Abscess OR pelvic abscess OR pericolic abscess OR intraabdominal abscess) AND (surgery OR operation OR sigmoidectomy OR drainage OR percutaneous drainage OR conservative therapy OR watchful waiting). All studies published in an English or German-speaking peer-reviewed journal will be suitable for this analysis. Case reports, case series of less than five patients, studies without follow-up information, systematic and non-systematic reviews and meta-analyses will be excluded. Primary endpoint is the rate of interval emergency surgery. Using the Review Manager Software (Review Manager/RevMan, V.5.3, Copenhagen, The Nordic Cochrane Centre, The Cochrane Collaboration, 2012) meta-analysis will be pooled using the Mantel-Haenszel method for random effects. The Risk of Bias in Non-randomized Studies of Interventions tool will be used to assess methodological quality of non-randomised studies. Risk of bias in randomised studies will be assessed using the Cochrane developed RoB 2-tool.Ethics and disseminationAs no new data are being collected, ethical approval is exempt for this study. This systematic review is to provide a new insight on the need for surgical treatment after a first attack of acute diverticulitis, complicated by intra-abdominal or pelvic abscesses. The results of this study will be presented at national and international meetings and published in a peer-reviewed journal.PROSPERO registration numberCRD42020164813.

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Prevalence of retinopathy in prediabetes: protocol for a systematic review and meta-analysis

BMJ Open ◽

10.1136/bmjopen-2020-040997 ◽

2021 ◽

Vol 11 (1) ◽

pp. e040997

Author(s):

Varo Kirthi ◽

Paul Nderitu ◽

Uazman Alam ◽

Jennifer Evans ◽

Sarah Nevitt ◽

...

Keyword(s):

Systematic Review ◽

Diabetic Retinopathy ◽

Data Extraction ◽

Meta Analysis ◽

International Diabetes Federation ◽

Current Data ◽

Risk Of Bias ◽

Fundus Photography ◽

Primary Data ◽

Cochrane Library

IntroductionThere is growing evidence of a higher than expected prevalence of retinopathy in prediabetes. This paper presents the protocol of a systematic review and meta-analysis of retinopathy in prediabetes. The aim of the review is to estimate the prevalence of retinopathy in prediabetes and to summarise the current data.Methods and analysisThis protocol is developed in accordance with the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols (PRISMA-P) guidelines. A comprehensive electronic bibliographic search will be conducted in MEDLINE, EMBASE, Web of Science, Cumulative Index to Nursing and Allied Health Literature (CINAHL), Google Scholar and the Cochrane Library. Eligible studies will report prevalence data for retinopathy on fundus photography in adults with prediabetes. No time restrictions will be placed on the date of publication. Screening for eligible studies and data extraction will be conducted by two reviewers independently, using predefined inclusion criteria and prepiloted data extraction forms. Disagreements between the reviewers will be resolved by discussion, and if required, a third (senior) reviewer will arbitrate.The primary outcome is the prevalence of any standard features of diabetic retinopathy (DR) on fundus photography, as per International Clinical Diabetic Retinopathy Severity Scale (ICDRSS) classification. Secondary outcomes are the prevalence of (1) any retinal microvascular abnormalities on fundus photography that are not standard features of DR as per ICDRSS classification and (2) any macular microvascular abnormalities on fundus photography, including but not limited to the presence of macular exudates, microaneurysms and haemorrhages. Risk of bias for included studies will be assessed using a validated risk of bias tool for prevalence studies. Pooled estimates for the prespecified outcomes of interest will be calculated using random effects meta-analytic techniques. Heterogeneity will be assessed using the I2 statistic.Ethics and disseminationEthical approval is not required as this is a protocol for a systematic review and no primary data are to be collected. Findings will be disseminated through peer-reviewed publications and presentations at national and international meetings including Diabetes UK, European Association for the Study of Diabetes, American Diabetes Association and International Diabetes Federation conferences.PROSPERO registration numberCRD42020184820.

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Effectiveness of Antalgic Therapies in Patients with Vertebral Bone Metastasis: A Protocol for a Systematic Review and Meta-Analysis

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18083991 ◽

2021 ◽

Vol 18 (8) ◽

pp. 3991

Author(s):

Antonio Jose Martin-Perez ◽

María Fernández-González ◽

Paula Postigo-Martin ◽

Marc Sampedro Pilegaard ◽

Carolina Fernández-Lao ◽

...

Keyword(s):

Systematic Review ◽

Bone Metastasis ◽

Data Extraction ◽

Meta Analysis ◽

Risk Of Bias ◽

Cochrane Library ◽

Pharmacological Intervention ◽

Vertebral Metastasis ◽

Randomized Controlled Clinical Trials

There is no systematic review that has identified existing studies evaluating the pharmacological and non-pharmacological intervention for pain management in patients with bone metastasis. To fill this gap in the literature, this systematic review with meta-analysis aims to evaluate the effectiveness of different antalgic therapies (pharmacological and non-pharmacological) in the improvement of pain of these patients. To this end, this protocol has been written according to the Preferred Reporting Items for Systematic review and Meta-Analysis Protocols (PRISMA-P) and registered in PROSPERO (CRD42020135762). A systematic search will be carried out in four international databases: Medline (Via PubMed), Web of Science, Cochrane Library and SCOPUS, to select the randomized controlled clinical trials. The Risk of Bias Tool developed by Cochrane will be used to assess the risk of bias and the quality of the identified studies. A narrative synthesis will be used to describe and compare the studies, and after the data extraction, random effects model and a subgroup analyses will be performed according to the type of intervention, if possible. This protocol aims to generate a systematic review that compiles and synthesizes the best and most recent evidence on the treatment of pain derived from vertebral metastasis.

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