Three-dimensional microanalysis of tooth movement during the first 6 months of orthodontic double retention

Jedliński, Maciej; Tandecka, Katarzyna; Grocholewicz, Katarzyna; Janiszewska-Olszowska, Joanna

doi:10.1016/j.ajodo.2023.07.018

Cited by 1 publication

(2 citation statements)

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“…Furthermore, such complications can be prevented by double retention [4,16], which can be achieved through the "cage effect" of removable thermoformable splints [21]; however, increased cooperation from the patient is necessary in attending follow-up appointments and replacing the retainer if the plastic wears off.…”

Section: Discussionmentioning

confidence: 99%

“…In order to thoroughly assess possible changes in the positions of the teeth, two intraoral scans were made using an iTero Element Flex intraoral scanner (iTero, Temple, AZ, USA), first during the first appointment (T1) after the retainer had been removed, and the second on the first follow-up appointment, six weeks later (T2), and a third scan was performed three months later (T3). The intraoral scans' superimposition was conducted using the best-fit algorithm in an external software (GOM Inspect, Zeiss, Germany) according to the protocol described by Jedli ński et al [16]. Figure 6 presents the measurements of tooth movement performed in GOM Inspect 2021 of the differences between T1 and T2.…”

Section: Intraoral Scans and Superimpositionmentioning

confidence: 99%

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Inadvertent Tooth Movement from a Bonded Mandibular Lingual Retainer—A Case Report with a Follow-Up 3D Analysis of Tooth Movement and a Microscopic Evaluation of the Wire

Jedliński,

Tandecka,

Grocholewicz

et al. 2024

Applied Sciences

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Background: One of the rarest complications of fixed orthodontic retention is inadvertent tooth movement of the teeth bonded to the retainer. A 25-year-old patient presented at the orthodontist as she was preoccupied about the position of the lower teeth. The aim of this case report was to present a follow-up of anterior teeth alignment after fixed retainer removal and to analyze the structure of the removed fixed orthodontic retainer in a patient suffering from a twist effect. Materials and Methods: The retainer that caused inadvertent movement has been removed, and subsequent teeth displacement was assessed with scan superimposition. The retainer structure and diameter were analyzed with a laser confocal microscope. Results: The superimposition showed significant improvements in the position of the teeth. The sole removal of the activated retainer resulted in a partial self-correction of the twist effect. Under microscopic observation, changes in the dimensions of the wire were found but were too small to cause significant changes in tooth position. Conclusions: A fixed retainer should always be removed when a twist effect is diagnosed. The wire sections covered with composite are less likely to untwist. In the presented case, the changes in the dimensions of the round retainer wire could not have led to changes in the teeth’s positions.

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Section: Discussionmentioning

confidence: 99%

Section: Intraoral Scans and Superimpositionmentioning

confidence: 99%