Acta Scientific Dental Sciences (ASDS)(ISSN: 2581-4893)

Research Article Volume 6 Issue 2

Relationship of Maxillary Incisor Angulation with Upper Lip Strain

Pricillia Priska Sianita*

Department of Orthodontics Faculty of Dentistry Professor. DR. Moestopo University, South Jakarta, Indonesia

*Corresponding Author: Pricillia Priska Sianita, Department of Orthodontics Faculty of Dentistry Professor. DR. Moestopo University, South Jakarta, Indonesia.

Received: December 17, 2021; Published: January 06, 2022


Background: In orthodontic treatment, cephalometric analysis is always carried out to obtain information that can help diagnose cases and develop the best treatment plan that can produce a good dental arrangement, a charming smile and an attractive profile. One of the measurements taken is to determine the angulation of the maxillary incisors because in almost every orthodontic case, the maxillary incisors, which are located in the anterior region, are the main areas where tooth movement occurs. In addition, this change in maxillary incisor angulation is expected to affect the position of the upper lip which in turn will affect the patient's profile. However, the position of the upper lip is also affected by the thickness and tension of the soft tissues of the upper lip.

Objective: This study was conducted to determine the relationship between maxillary incisor angulation and upper lip strain.

Materials and methods: A total of 52 lateral cephalograms from deutero-Malay sub-race subjects with Angle class II division 1 malocclusion which has an overjet characteristic of greater than 6 mm resulting in a convex profile are the subjects in this study. The maxillary incisor angulation was measured through the angle formed by the intersection of the long axis of the maxillary incisor with the sella-nasion line (S-N), while the upper lip tension was determined by assessing the strain factor. The measurement data were analyzed statistically using a correlation test to see how the relationship between the two variables in this study was

Results: Maxillary incisor angulation was shown to have a significant relationship (p < 0.05) with upper lip strain and this relationship got stronger as the measurement results increased in the related variables.

Conclusion: Proclination or retroclination of maxillary incisors showed a significant relationship with upper lip strain. Increasing the value of each variable will further strengthen the relationship.

Keywords: Angulation of Maxillary Incisors; The Upper Lip Strain; Lateral Cephalogram; Orthodontic Treatment


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Citation: Pricillia Priska Sianita. “Relationship of Maxillary Incisor Angulation with Upper Lip Strain”. Acta Scientific Dental Sciences 6.2 (2022): 37-42.


Copyright: © 2022 K Pricillia Priska Sianita. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


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