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Erschienen in: Surgical and Radiologic Anatomy 1/2021

20.08.2020 | Original Article

Associations among palatal impaction of canine, sella turcica bridging, and ponticulus posticus (atlas arcuate foramen)

verfasst von: Sepideh Dadgar, Mona Alimohamadi, Nikoo Rajabi, Vahid Rakhshan, Farhad Sobouti

Erschienen in: Surgical and Radiologic Anatomy | Ausgabe 1/2021

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Abstract

Introduction

The palatal impaction of canine (PIC) can be predicted by some head and neck skeletal anomalies or variants. Since studies on this regard (especially vertebral anomalies) are scarce, this study was conducted.

Methods

This case–control study was done on 46 PIC orthodontic patients (34 females, 12 males) and 46 control orthodontic patients (36 females, 10 males). The diagnosis of PIC was done on lateral cephalographs and panoramic radiographs. On cephalographs, sella turcica bridging (occurrence and severity) and ponticulus posticus (occurrence and severity) were assessed. Associations between PIC, sella bridging, and ponticulus posticus were examined statistically (α = 0.05, β ≤ 0.2).

Results

Cases’ and controls’ mean ages were 17.7 ± 4.0 and 17.4 ± 3.5, respectively. Of the case subjects, 22, 22, and 2 had respectively types I (normal), II, and III of sella bridging, while these numbers were 34, 12, and 0 in controls (chi-square P = 0.023 for severity, 0.010 for occurrence). Ponticulus posticus was observed in 28 cases (7 completed) and 17 controls (6 completed, P = 0.022 for occurrence, 0.056 for severity). Sella bridging was not associated with ponticulus posticus (Spearman P = 0.150). According to binary logistic regression, sella bridging can increase the odds of palatal canine impaction for OR = 2.8 times, while ponticulus posticus for OR = 2.6. Age and sex did not affect sella bridging or ponticulus posticus.

Conclusions

Both sella bridging and ponticulus posticus can predict an increased rate of PIC for more than 2.5 times.
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Metadaten
Titel
Associations among palatal impaction of canine, sella turcica bridging, and ponticulus posticus (atlas arcuate foramen)
verfasst von
Sepideh Dadgar
Mona Alimohamadi
Nikoo Rajabi
Vahid Rakhshan
Farhad Sobouti
Publikationsdatum
20.08.2020
Verlag
Springer Paris
Erschienen in
Surgical and Radiologic Anatomy / Ausgabe 1/2021
Print ISSN: 0930-1038
Elektronische ISSN: 1279-8517
DOI
https://doi.org/10.1007/s00276-020-02548-x

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