The effectiveness of non-surgical maxillary expansion: a meta-analysis

Zhou, Yang; Long, Hu; Ye, Niansong; Xue, Junjie; Yang, Xin; Liao, Lina; Lai, Wenli

doi:10.1093/ejo/cjt044

Cited by 55 publications

(51 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The appliances studied were: Hyrax (bonded or banded), Haas (bonded or banded), Quad Helix (QH), Minne‐expander, bone‐anchored maxillary expander, Nitanium maxillary expander and expansion arch. The short‐term was mainly defined as immediately after treatment, while the definition of long‐term varied between a minimum of 6 months post‐retention and a maximum of 7 years post‐retention .…”

Section: Resultsmentioning

confidence: 99%

“…Dentoalveolar transversal effects of SME : Maxillary intermolar width. A significant increase was reported with the QH ( very low to moderate evidence), the Minne‐expander ( low evidence) and the Nitanium maxillary expander ( low evidence). One study , pointed out no significant difference when comparing the bonded with the banded Minne‐expander ( very low evidence).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Dental and skeletal effects of palatal expansion techniques: a systematic review of the current evidence from systematic reviews and meta‐analyses

Bucci

D’Antò

Rongo

et al. 2016

J of Oral Rehabilitation

View full text Add to dashboard Cite

The aim was to assess the quality and to summarise the findings of the Systematic Reviews (SRs) and Meta-Analyses (MAs) on the dental and skeletal effects of maxillary expansion. Electronic and manual searches have been independently conducted by two investigators, up to February 2015. SRs and MAs on the dentoalveolar and skeletal effects of fixed expanders were included. The methodological quality was assessed using the AMSTAR (A Measurement Tool to Assess Systematic Reviews). The design of the primary studies included in each SR/MA was assessed with the LRD (Level of Research Design scoring). The evidence for each outcome was rated applying a pre-determined scale. Twelve SRs/MAs were included. The AMSTAR scores ranged from 4 to 10. Two SRs/MAs included only RCTs. The current findings from SRs/MAs support with high evidence a significant increase in the short-term of maxillary dentoalveolar transversal dimensions after Rapid Maxillary Expansion (RME). The same effect is reported with moderate evidence after Slow Maxillary Expansion (SME). However, there is moderate evidence of a non-significant difference between the two expansion modalities concerning the short-term dentoalveolar effects. With both RME and SME, significant increase of skeletal transversal dimension in the short-term is reported, and the skeletal expansion is always smaller than the dentoalveolar. Even though dental relapse to some extent is present, long-term results of the dentoalveolar effects show an increase of the transversal dimension, supported by moderate evidence for RME and low evidence for SME. Skeletal long-term effects are reported only with RME, supported by very low evidence.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Dental and skeletal effects of palatal expansion techniques: a systematic review of the current evidence from systematic reviews and meta‐analyses

Bucci

D’Antò

Rongo

et al. 2016

J of Oral Rehabilitation

View full text Add to dashboard Cite

show abstract

“…- 27 However, none of these studies evaluated the spontaneous dentoalveolar changes of the mandibular dental arch during these follow-up periods.…”

Section: Discussionmentioning

confidence: 99%

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

Alves

Maranhão

Janson

et al. 2017

Dental Press J. Orthod.

View full text Add to dashboard Cite

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.

show abstract

“…1–5 Rapid palatal expansion (RPE), which typically uses a tooth-borne appliance with a center jackscrew, is a well-established and reliable technique to correct this problem for adolescent patients. 6–8 For adults however, nonsurgical RPE with a tooth-borne appliance can result in dentoalveolar tipping that may cause unfavorable periodontal effects due to the interdigitated midpalatal suture and decreased elasticity of bone found in adults. 9–11 Therefore, in adults, skeletal orthopedic expansion is necessary to prevent these issues and to correct transverse maxillary deficiency.…”

Section: Introductionmentioning

confidence: 99%

Effects of monocortical and bicortical mini-implant anchorage on bone-borne palatal expansion using finite element analysis

Lee

Moon

Hong

2017

American Journal of Orthodontics and Dentofacial Orthopedics

118

View full text Add to dashboard Cite

Introduction Bone-borne palatal expansion relies on mini-implant stability for successful orthopedic expansion. The large magnitude of applied force experienced by mini-implants during bone-borne expansion may lead to high failure rates. Use of bicortical mini-implant anchorage rather than monocortical anchorage may improve mini-implant stability. The aim of this study was to analyze and compare the effects of bicortical and monocortical anchorage on stress distribution and displacement during bone-borne palatal expansion using finite element analysis (FEA). Methods Two skull models were constructed to represent expansion prior to and after midpalatal suture opening. Three clinical situations with varying mini-implant insertion depths were studied in each skull model: monocortical, 1mm bicortical, and 2.5mm bicortical. FEA simulations were performed for each clinical situation in both skull models. Von Mises stress distribution and transverse displacement was evaluated for all models. Results Peri-implant stress was greater in the monocortical anchorage model compared to both bicortical anchorage models. In addition, transverse displacement was greater and more parallel in the coronal plane for both bicortical models compared to the monocortical model. Minimal differences were observed between the 1mm bicortical and 2.5mm bicortical models for both peri-implant stress and transverse displacement. Conclusions Bicortical mini-implant anchorage results in improved mini-implant stability, decreased mini-implant deformation and fracture, more parallel expansion in the coronal plane, and increased expansion during bone-borne palatal expansion. However, the depth of bicortical mini-implant anchorage was not significant.

show abstract

The effectiveness of non-surgical maxillary expansion: a meta-analysis

Cited by 55 publications

References 26 publications

Dental and skeletal effects of palatal expansion techniques: a systematic review of the current evidence from systematic reviews and meta‐analyses

Dental and skeletal effects of palatal expansion techniques: a systematic review of the current evidence from systematic reviews and meta‐analyses

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

Effects of monocortical and bicortical mini-implant anchorage on bone-borne palatal expansion using finite element analysis

Contact Info

Product

Resources

About