Consequences of early extraction of compromised first permanent molar: a systematic review

Afnan M Saber, Doua H Altoukhi, Mariam F Horaib, Azza A El-Housseiny, Najlaa M Alamoudi, Heba J Sabbagh, Afnan M Saber, Doua H Altoukhi, Mariam F Horaib, Azza A El-Housseiny, Najlaa M Alamoudi, Heba J Sabbagh

Abstract

Background: The aim of this study was to systematically review the literature to determine the sequelae of early extraction of compromised first permanent molars (FPMs) with regard to the skeletal and dental development of 5- to 15-year-old children. Meta-analysis was conducted when applicable.

Methods: Our research protocol included a search strategy, inclusion/exclusion criteria, and a data extraction plan. The search engines used were PubMed, Scopus, and Science Direct. Study selection was performed independently by three reviewers. Articles published from 1960 to 2017 were reviewed based on inclusion and exclusion criteria. Meta-analysis was performed to compare space closure between upper and lower arches.

Results: Eleven studies fulfilled the inclusion criteria. The consequences were decrease in post extraction space, accelerated development and eruption of second permanents molars (SPMs) and third molars, a decrease in caries and/or fillings on the proximal surfaces of adjacent teeth, lingual tipping and retrusion of incisors, and counter clockwise rotation of the occlusal plane.

Conclusion: There were several consequences of early extraction of FPMs, which were related to skeletal and dental development. Our systematic review suggests that comprehensive evaluation of the compromised FPMs should be performed before planning an extraction. The ideal time for FPM extraction is when the SPM is at the early bifurcation stage in order to achieve complete closure of the extraction space by the SPM. Benefits should be weighed over the risks to decrease the risk of unfavorable outcomes as much as possible. However, due to the limited evidence on the outcomes and variables that influence them, high-quality prospective studies are needed.

Keywords: Children; Early extraction; Early loss; First permanent molar; Result or effect of extraction.

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The authors declare that they have no competing interests.

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Figures

Fig. 1
Fig. 1
Flow diagram of study selection process
Fig. 2
Fig. 2
Forest plot for meta-analysis of the comparison between post extraction space closure in the upper and lower arches

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