Evaluation of the Depth of the Curve of Spee, Overjet, and Overbite in Class I, Class II, and Class III Malocclusion Among Patients at University of North Sumatera Dental Hospital
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- curve of Spee, overjet, overbite, malocclusion
The curve of Spee is an important characteristic in the mandibular arch. An opti-mal occlusion must have a curve of Spee ranging from flat to mild. Therefore, an understanding of the curve of Spee is essential for both diagnosis and treatment planning in orthodontics. The aim of this study was to examine the difference in both the form and depth of the curve of Spee among class I, II, and III malocclu-sions and investigate the relationship between the depth of the curve of Spee with both overjet and overbite among patients at the University of North Sumatera Dental Hospital. A total of 100 dental study models with ages older than 15 years were enrolled and divided into 5 malocclusion groups: class I (n = 40), class II di-vision 1 (n = 32), class II division 2 (n = 10), class II subdivision (n = 7), and class III (n = 11). The depth of the curve of Spee, overjet, and overbite was measured on dental study models with a digital caliper. The depth of curve of Spee was tak-en as the mean measurement from both sides of the arch on dental study models. The correlation coefficient between the depth of the curve of Spee and other var-iables were also calculated. The results showed that a maximum mean depth of the curve of Spee of 4.65 ± 1.41 mm in the class II division 2 group and a mini-mum depth of 2.34 ± 0.96 mm in the class III group. A statistically significant correlation was also found between the depth of the curve of Spee with both overbite and overjet. In conclusion, the curve of Spee was found to be deepest in class II division 2 followed by class II division 1, class II subdivision, class I, and class III malocclusion.
- © 2018, the Authors. Published by Atlantis Press.
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Cite this article
TY - CONF AU - Nazruddin Nazruddin AU - Yan Yu Tan PY - 2018/05 DA - 2018/05 TI - Evaluation of the Depth of the Curve of Spee, Overjet, and Overbite in Class I, Class II, and Class III Malocclusion Among Patients at University of North Sumatera Dental Hospital BT - Proceedings of the 11th International Dentistry Scientific Meeting (IDSM 2017) PB - Atlantis Press SP - 205 EP - 210 SN - 2468-5739 UR - https://doi.org/10.2991/idsm-17.2018.27 DO - https://doi.org/10.2991/idsm-17.2018.27 ID - Nazruddin2018/05 ER -