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Title Diagnosing Immediate Mandibular Lateral Translation (IMLT) Seems to Have No Effect on the Success of Comprehensive Dental Care
Clinical Question In patients receiving comprehensive dental care, does the diagnosis and planning for immediate mandibular lateral translation, compared to no diagnosis, affect treatment outcome?
Clinical Bottom Line In the full mouth rehabilitation patient, there seems to be no scientific evidence that failing to account for IMLT will have a negative impact on patient care. Further, there is no scientific evidence that IMLT exists and nor how much its existence impacts treatment.
Best Evidence (you may view more info by clicking on the PubMed ID link)
PubMed ID Author / Year Patient Group Study type
(level of evidence)
#1) 26723093Taylor/2016914 human subjects, 23 studies Systematic review of randomized trials
Key resultsNo article in this systematic review reported on any specific harm or beneficial effects for patients or clinicians by integrating immediate mandibular lateral translation (IMLT), sometimes referred to as the Bennett movement or immediate side shift. However, the presence of IMLT does alter cuspal pathways and cusp heights in restored anatomy at least to some degree. Further, none of the reports acknowledged any adverse clinical outcomes such as the need for extensive occlusal adjustments or compromised esthetics. None of the reports identified any adverse treatment outcomes when IMLT was ignored, and none of the included studies identified any negative consequences of not using a fully adjustable articulator.
Evidence Search Immediate[All Fields] AND ("mandible"[MeSH Terms] OR "mandible"[All Fields] OR "mandibular"[All Fields]) AND lateral[All Fields] AND ("translations"[MeSH Terms] OR "translations"[All Fields] OR "translation"[All Fields] OR "protein biosynthesis"[MeSH Terms] OR ("protein"[All Fields] AND "biosynthesis"[All Fields]) OR "protein biosynthesis"[All Fields
Comments on
The Evidence
Validity: The article is a systematic review with 914 human subjects within 23 studies. All studies were observational/cross-sectional without experimental clinical control. A thorough search for the appropriate subject was performed and studies from 1951 to 2014 were investigated. Individual studies were screened for two parameters only, English language and humans. Perspective: There is a need for more study in this area. This systematic review demonstrates that there is little consistency regarding the definition and timing of IMLT and methods of measurement. The authors in this review report that there is no standardization between studies to confidently disprove the presence of IMLT, nor is there sufficient scientific evidence as to whether its presence affects treatment.
Applicability Gender and ethnicity were not indicated in any of the studies. There are inconsistencies in the method of recording and measurement of immediate mandibular lateral translation (IMLT) in the included studies. 23 studies met the search criteria with a total of 914 patients age range from 19 to 65 years; however, none of the studies had an experimental clinical control. Some studies described the voluntary IMLT, some examined induced IMLT, and yet others did not report on voluntary vs. induced. All studies failed to report any clinical implications of IMLT. Ultimately, the conclusion of this systematic review states that there is no evidence of harm or benefit to patient or clinician if IMLT is ignored.
Specialty/Discipline (General Dentistry) (Orthodontics) (Prosthodontics)
Keywords Immediate mandibular lateral translation, immediate side shift, Bennett movement, Bennett side shift
ID# 3122
Date of submission: 12/01/2016spacer
E-mail pouranfar@livemail.uthscsa.edu
Author Farzan Pouranfar, DMD
Co-author(s) e-mail
Faculty mentor/Co-author E. Matthew Lamb, DDS
Faculty mentor/Co-author e-mail Lambem@uthscsa.edu
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