Rezidentu zinātniski pētnieciskie darbi

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Browsing Rezidentu zinātniski pētnieciskie darbi by Author "Ābeltiņš, Andris"

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    Trīsdimensiju sejas mīksto audu izmaiņas pēc ortognātiskās ķirurģijas
    (Rīga Stradiņš University, 2024) Jefimova, Irina; Ābeltiņš, Andris; Faculty of Residency; Rezidentūras studiju fakultāte
    Introduction: The introduction of the whole range of digital data acquisition devices and types of software in recent years, allows to analyze soft tissue changes after orthognathic surgery by using three-dimensional images, that overcome the disadvantages of two-dimensional analysis and obtain a more accurate image of facial soft tissues morphology. Superimposition of CBCT and 3D- photographic data allows to determine the soft-to-hard tissue ratio in different types of orthognathic surgery. This data can improve 3D surgical planning and provide more accurate soft tissue changes predictions. Aim: The aim of this study was to review the available scientific literature about 3D soft tissue changes after orthognathic surgery. As well as to evaluate the intra- and inter-operator reliability and reproducibility of soft tissue landmarks on three-dimensional stereophogrammetric images. Materials and methods: A search for the relevant studies was performed in the free access databases as well as in RSU subscribed e-databases – full text, English language, systematic reviews, meta-analysis, randomized controlled trials, retrospective and prospective studies. To evaluate the intra- and inter-operator reliability stereophotogrammetric images of patients with skeletal Class II and III malocclusion who underwent orthodontic treatment and orthognathic surgery were used. Stereophotogrammetric images were obtained using the 3dMD Face (3dMD TM Ltd, USA) system before surgery, 24 and 36 months after orthognathic surgery. The 21 anthropometric landmarks were digitally marked on 3D facial image in 3dMD Vultus. Intra- class correlation coefficient (ICC) with 95% confidence interval was used to assess intra- and inter-operator reliability. Results: The intraclass correlation coefficient 95% CI range was 0.947–1. That indicate excellent reliability. Inter-class correlation coefficient showed good inter-examiner agreement (ICC 95% CI range 0.990-1), indicating no statistically significant difference in the accuracy of landmark positions between both operators’ measurements obtained within 2-week interval. Conclusions: The analysis of research available on 3D soft tissue changes after orthognathic surgery revealed methodological differences between articles, small sample size, there are differences in surgical techniques used, magnitude of skeletal movement, patient ethnicity, age and sex. That means that available data should be interpreted with caution. Available studies that evaluate 3D soft tissue changes after orthognathic surgery have 6 to 12 months follow up periods. A long-term evaluation should be performed to study skeletal relapse and soft tissue stability after orthognathic surgery.