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Article: Volume 8 Number 2 Page 63 - April 2015

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  Orthodontic Update 30: 63-68

Orthodontics:  Failure of Eruption of Posterior Teeth

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Abstract: Failure of eruption of posterior teeth is rare but has significant clinical implications. There has been a recent re-classification of failure of eruption based on aetiology and presentation. Primary failure of eruption (PFE) affects all teeth distal to the affected tooth and can result in a significant posterior open bite. Mechanical failure of eruption (MFE) is due to ankylosis and the teeth distal to the affected tooth are not affected. Early diagnosis and differentiation between PFE and MFE is essential to ensure that the correct treatment is provided. Two cases are shown that demonstrate MFE.

Clinical relevance: This article reviews the aetiology for non-eruption and identifies the differences between PFE and MFE.

Author notes: Claire Dunbar, BDS, MJDF RCS(Eng), MSc, MOrth RCS(Ed), Senior Registrar, Dorset County Hospital, Dorchester and School of Oral and Dental Sciences, University of Bristol and David Slattery, BDS, FDS RCPS, MSc, MOrth, FDS(RCS), Consultant Orthodontist, Wexham Park Hospital, Slough, UK.

Objective: To enable the identification of failure of eruption of posterior teeth and recognize the differences between PFE and MFE.

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