References

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Grover PS, Lorton L The incidence of unerupted permanent teeth and related clinical cases. Oral Surg Oral Med Oral Pathol. 1985; 59::420-425
Frank CA Treatment options for impacted teeth. J Am Dent Assoc. 2000; 131::623-632
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Case report: the importance of careful planning for orthodontic extractions

From Volume 10, Issue 2, April 2017 | Pages 70-71

Authors

Richard Leck

BDS, MFDS RCPSG

Senior House Officer in Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Surgery, James Cook University Hospital, Marton Road, Middlesbrough TS3 4BW, UK

Articles by Richard Leck

Ushmita Johar

BDS, MFDS RCSPG, LDS RCS

Trust Registrar in Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Surgery, James Cook University Hospital, Marton Road, Middlesbrough TS3 4BW, UK

Articles by Ushmita Johar

David Farr

FDS RCS, FRCS

Consultant in Oral and Maxillofacial Surgery, Department of Oral and Maxillofacial Surgery, James Cook University Hospital, Marton Road, Middlesbrough TS3 4BW, UK

Articles by David Farr

Abstract

This case describes the root resorption of a maxillary first molar due to an impacted maxillary second premolar tooth. The impacted second premolar tooth was surgically removed leaving a compromised first molar tooth.

CPD/Clinical Relevance: This case demonstrates the importance of thorough assessment of impacted teeth prior to planned orthodontic extraction. It shows that unerupted maxillary premolar teeth have the potential to damage the permanent molar teeth by resorbing the roots. It is especially important to consider this as a potential complication when extracting teeth for orthodontic purposes.

Article

Premolars are the third most likely tooth to be impacted after third molars and canines.1,2,3 Factors associated with tooth impaction are either local or systemic.4,5

This case describes the unusual phenomenon in which an upper right second premolar tooth resorbed the roots of an upper right first molar. There are many published articles describing the potential for impacted permanent canine teeth to resorb maxillary incisor teeth.6,7,8,9,10 Root resorption of a maxillary first molar by a second premolar tooth is, by comparison, relatively rare and few case reports exist.11,12,13,14,15,16 A general consensus exists that, provided the impacted premolar is either partly erupted, or unerupted but palpable, it is not likely to cause root resorption of an adjacent molar tooth.16

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