Failure rate of infra-zygomatic crest (IZC) bone screws in orthodontics: A Systematic review

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Review Article

Author Details : Hemwati Nandan*, Srinivas Gosla Reddy, Ashi Chug, Ashutosh Dixit, Pragjyoti Jha

Volume : 8, Issue : 2, Year : 2024

Article Page : 114-124

https://doi.org/10.18231/j.jco.2024.019

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Abstract

Objective: The aim of this review is to provide a precise estimation of infra-zygomatic crest (IZC) bone screw failure rate during orthodontic treatment.
Materials and Methods: Data were obtained using the Cochrane Central Register of Controlled Trails (central), PUBMED, EMBASE, google scholar, OVID, Wiley library till 1 January 2022. The titles and abstract of the electronic search were screened and evaluated by two observers according to the inclusion and exclusion criteria. This review was enrolled in PROSPERO (registration ID number CRD42020206610).
Search Method: There were 1725 records identified through electronic and 1 additional record identified through manual search. After 377 duplicate removal, 1349 studies were screened on the base of title and abstract the final sample included 9 studies that meet the primary inclusion criteria were selected. Each study was assessed using the evaluation method described in the Cochrane handbook for systematic reviews.
Result: All studier collectively included of the 1238 IZC miniscrews. Included studies ranged from 20 to 772 IZC miniscrews and the average number was approximate 137 IZC miniscrews per study. The diameter of inserted IZC miniscrews ranged from 1.2 to 2.3 mm and length ranged from 6 to 17 mm. The recorded failure rate ranged from 0% to 47.2%, and the average failure rate for IZC miniscrew was 9.45% (with 95% CI [58.91; 93.82]).
Conclusion: IZC miniscrew has low failure rate which suggest that IZC miniscrew are clinically reliable. Miniscrew are a stable anchorage for orthodontic tooth movement and zygomatic buttress of maxilla is suitable region for skeletal anchorage device placement.

Keywords: Failure rate, IZC miniscrew, infra­zygomatic crest, TAD, Anchorage devices, Systematic review

How to cite : Nandan H, Reddy S G, Chug A, Dixit A, Jha P, Failure rate of infra-zygomatic crest (IZC) bone screws in orthodontics: A Systematic review. J Contemp Orthod 2024;8(2):114-124

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