Reliability of Point M as landmark for analysis of sagittal relation of maxilla

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Original Article

Author Details : Anu Bharti*, Saugat Ray, Sanjeev Datana, Amrit Thapa

Volume : 7, Issue : 4, Year : 2023

Article Page : 318-321

https://doi.org/10.18231/j.jco.2023.054

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Abstract

Introduction: Most of the several cephalometric analyses used for the diagnosis of sagittal dysplasia, Point A is the most widely used indicator for ascertaining of maxillary position. By the virtue of difficulty in locating point A in many cases, alternative methods had been proposed for precise location of point A but there are only few studies on the reliability of these alternative points. Point M is one such indicator for evaluating the sagittal position of maxilla. The objective of this study is to measure and compare the reliability of point A and point M.
Materials and Methods: Lateral cephalogram of 50 subjects (11-20 years) were included in the study consisting of all types of skeletal malocclusions. Point A and point M were identified by two different group of orthodontists. Linear and angular measurements through both the points were analysed and compared between the observers using interclass correlation.
Results: Interclass correlation coefficient of linear and angular parameters of point M was found to be higher than point A.
Conclusion: Point M may be considered as more reliable alternative for point A in two dimensional cephalometric analysis.

Keywords: Point A, Point M, Lateral Cephalogram, Reliability.

How to cite : Bharti A, Ray S, Datana S, Thapa A, Reliability of Point M as landmark for analysis of sagittal relation of maxilla. J Contemp Orthod 2023;7(4):318-321

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