Browsing by Author "Sahinoglu, Zahire"

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    Dentofacial Effects of Skeletal Anchored Treatment Modalities For The Correction of Maxillary Retrognathia
    (2014) Sar, Cagla; Sahinoglu, Zahire; Ozcirpici, Ayca Arman; Uckan, Sina; https://orcid.org/0000-0003-4966-9779; https://orcid.org/0000-0002-9250-3689; 24373654
    Introduction: The aim of this clinical study was to investigate the skeletal, dentoalveolar, and soft-tissue effects of 2 skeletal anchorage rationales for Class III treatment compared with an untreated Class III control group. Methods: Fifty-one subjects who were in the prepubertal or pubertal growth period were included in the study. In group 1 (n = 17), facemasks were applied from miniplates placed in the lateral nasal walls of the maxilla, and intermaxillary Class III elastics were applied from symphyseal miniplates to a bonded appliance on the maxilla in group 2 (n = 17). These skeletal anchored groups were compared with an untreated control group (n = 17). Lateral cephalometric radiographs were obtained at the beginning and the end of the observation periods in all groups and analyzed according to the structural superimposition method. Differences between the groups were assessed with the Wilcoxon signed rank test or the paired-samples t test. Results: The treatment periods were 7.4 and 7.6 months in groups 1 and 2, respectively, and the untreated control group was observed for 7.5 months. The maxilla moved forward by 3.11 mm in group 1 and by 3.82 mm in group 2. The counterclockwise rotation of the maxilla was significantly less in group 1 compared with group 2 (P < 0.01). The mandible showed clockwise rotation and was positioned downward and backward in the treatment groups, and it was significantly greater in group 2 compared with group 1 (P < 0.01). Changes in the maxillary incisor measurements were negligible in group 1 compared with group 2. A significant amount of mandibular incisor retroclination was seen in group 1, and a significant proclination was seen in group 2. The maxillomandibular relationships and the soft-tissue profiles were improved remarkably in both treatment groups. Conclusions: The protocols of miniplates with facemasks and miniplates with Class III elastics offer valid alternatives to conventional methods in severe skeletal Class III patients. However, the 2 maxillary protraction protocols demonstrated significant skeletal and dentoalveolar effects. The miniplate with facemask protocol is preferred for patients with severe maxillary retrusion and a high-angle vertical pattern, whereas in patients with a decreased or normal vertical pattern and retroclined mandibular incisors, miniplates with Class III elastics can be the intraoral treatment option. Therefore, the exact indication of the procedure should be considered carefully.
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    Sagittal skeletal correction using symphyseal miniplate anchorage systems: Success rates and complications
    (2019) Cubuk, Secil; Kaya, Burcak; Sahinoglu, Zahire; Ates, Ufuk; Ozcirpici, Ayca Arman; Uckan, Sina; 30413832
    ObjectivesAim of this study is to evaluate success rates and complications related with symphyseal miniplate anchorage systems used for treatment of Class2 and Class3 deformities.MethodsAtotal of 58miniplates applied to 29growing patients were evaluated. The first group comprised 24symphyseal miniplates applied to 12patients and Forsus Fatigue Resistant Devices were attached to the head of the miniplates for mandibular advancement. The second group consisted of 34symphyseal miniplates applied to 17patients and intermaxillary elastics were applied between acrylic appliances placed on the maxillary dental arch and the symphyseal miniplates for maxillary protraction. Success rate and complications of the symphyseal plate-screw anchorage system were evaluated.ResultsThe overall success rate of symphseal miniplates was 87.9%. Six miniplates showed severe mobility and 2miniplates broke during orthodontic treatment. Infection, miniplate mobility and mucosal hypertrophy were statistically different between the two groups.ConclusionsSymphyseal miniplates were generally used as successful anchorage units in most patients. Infection, mobility, and mucosal hypertrophy occurred more frequently in Class2 deformity correction. However, the success rates regarding the two treatment modalities were comparable. ZusammenfassungZieleZiel der vorliegenden Studie ist es, Erfolgsraten und Komplikationen im Zusammenhang mit symphysealen Miniplattenverankerungssystemen zur Behandlung von Klasse-II- und -III-Anomalien zu bewerten.MethodenAusgewertet wurden insgesamt 58Miniplatten, die bei 29Patienten im Wachstum inseriert wurden. In der ersten Gruppe wurden 24symphyseale Miniplatten bei 12Patienten inseriert. Zur Korrektur der Unterkieferrucklage wurden Forsus-Apparaturen an den Miniplatten verankert. In der zweiten Gruppe wurden 34symphyseale Miniplatten bei 17Patienten inseriert. Zur Protraktion des Oberkiefers wurden intermaxillare Elastics verwendet, die zwischen Acrylgeraten im Oberkiefer und den symphysealen Miniplatten eingehangt wurden. Untersucht wurden Erfolgs- und Komplikationsraten des symphysealen Platten-Schrauben-Verankerungssystems.ErgebnisseDie Gesamterfolgsrate der symphsealen Miniplatten betrug 87,9%. Bei 6Miniplatten zeigte sich eine hohe Mobilitat, 2frakturierten wahrend der kieferorthopadischen Behandlung. Das Auftreten von Infektion, Miniplattenmobilitat und Schleimhauthypertrophie war zwischen den beiden Gruppen statistisch unterschiedlich.SchlussfolgerungenSymphyseale Miniplatten wurden in der Regel bei den meisten Patienten als erfolgreiche Verankerungseinheiten eingesetzt. Infektion, Mobilitat und Schleimhauthypertrophie traten haufiger bei Klasse-2-Korrekturen auf, die Ergebnisse beider Behandlungsmethoden unterschieden sich jedoch nur geringfugig.