Development of a Prediction Model for Short-Term Success of Functional Treatment of Class II Malocclusion

Elisabetta Cretella Lombardo, Lorenzo Franchi, Giorgio Gastaldi, Veronica Giuntini, Roberta Lione, Paola Cozza and Chiara Pavoni
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Elisabetta Cretella Lombardo: Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, Via Cracovia, 50, 00133 Roma, Italy
Lorenzo Franchi: Department of Surgery and Translational Medicine, University of Florence, Piazza di San Marco, 4, 50121 Florence, Italy
Giorgio Gastaldi: Dental School, Vita-Salute San Raffaele University, Via Olgettina Milano, 58, 20132 Milan, Italy
Veronica Giuntini: Department of Surgery and Translational Medicine, University of Florence, Piazza di San Marco, 4, 50121 Florence, Italy
Roberta Lione: Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, Via Cracovia, 50, 00133 Roma, Italy
Paola Cozza: Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, Via Cracovia, 50, 00133 Roma, Italy
Chiara Pavoni: Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, Via Cracovia, 50, 00133 Roma, Italy

IJERPH, 2020, vol. 17, issue 12, 1-7

Abstract: (1) Background: The nature of the changes that contribute to Class II correction with functional appliances is still controversial. A broad variation in treatment responses has been reported. The purpose of this study was to find cephalometric predictors for individual patient responsiveness to twin-block treatment in patients with Class II Division 1 malocclusion; (2) Methods: The study was performed on a sample of 39 pubertal patients (21 females, 18 males) treated with the twin block appliance. Lateral cephalograms were available at the start of the treatment (T1) and at the end of functional therapy (T2). The outcome variable was the T2–T1 change in the sagittal position of the soft tissue pogonion with respect to the vertical line perpendicular to the Frankfort plane and passing through point subnasale. The predictive variables were age, gender at T1, and all the cephalometric parameters measured T1. Forward stepwise linear regression with p value to enter 0.05 and p value to leave 0.10 was applied; (3) Results: The only significant predictive variable that was selected was the Co–Go–Me angle ( p = 0.000); (4) Conclusions: A greater advancement of the soft tissue chin on the profile is expected with smaller pretreatment values of Co–Go–Me angle.

Keywords: Class II malocclusion; functional appliances; cephalometric analysis (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:gam:jijerp:v:17:y:2020:i:12:p:4473-:d:374626

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