A Morphometric Study of the Normal Human Ear in Husm Using Computer Based Measurement Technique

Abstract

RINGKASAN Kajian mengenai telinga manusia adalah penting untuk memberi pengetahuan tentang nilai purata parameter standard untuk telinga. Prostodontik boleh menggunakan nilai ini semasa menghasilkan telinga palsu bagi mendapatkan pandangan estetik yang menyenangkan untuk pesakit yang mempunyai masalah kecacatan telinga. Hasil kajian ini telah berjaya menyediakan data beberapa parameter standard untuk telinga kiri dan kanan bagi penduduk di Kelantan. Kajian morphometric telah dijalankan ke atas 68 sampel telinga normal untuk kedua-dua kiri dan kanan dengan 15 parameter diukur. Data telah diambil dari imbasan CT dan ditukar kepada imej 3 dimensi (3D) menggunakan kaedah pembangunan 'soft tissue'. Hasil kajian analisa morfometrik memberikan nilai purata dan sisihan piawai untuk panjang dan lebar telinga, panjang dan tinggi 'tragus', 'insertion length' telinga, panjang dan lebar 'lobular' dan 'conchal', 'protusion' pada aras 'superaurale' dan 'tragal' dan juga nilai sudut kecenderungan dan simetri telinga. ABSTRACT A study of the human auricle is important to give prior knowledge of average value for standard parameters of the ear. Prosthodontist uses this value when reconstructing the prosthetic ear in order to achieve a pleasant aesthetic glance of the patient with a problem of ear deformity. This study has successfully provided morphometric data of standard ear parameters of both the left and right ear for the Kelantan population. Morphometric study was conducted on 68 samples of normal left and right ears. 15 parameters were measured. Data was retrieved from Computed Tomography (CT) scans and converted to 3-dimensional (3D) digital images using soft tissue development. Results from this morphometric analysis provided the mean and standard deviation values for auricular length and width, length and height of tragus, insertion length of auricle, length and width of lobular and conchal, protusion at superaurale and tragal level as well as the inclination and symmetrical angle.

3D assessment of ear morphology

“…The angulation was found to be higher in females ( Table–10 ). Mohamed et al (2015) 20 calculated the angulation between the long axis of the ear and the bridge of the nose and the values are 23.64 ± 3.20 over the right side and 23.04 ± 3.84 over the left side.…”