Journal of the Korean Association of Oral and Maxillofacial Surgeons : eISSN 2234-5930 / pISSN 2234-7550

Fig. 4.

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Fig. 4. Four main shapes were observed in the coronal plane. A. Type 1: The anterior wall shows convexity towards the external auditory canal, the posterior wall is straight. B. Type 2: The anterior wall and posterior wall are straight, while the posterior wall is angled upwards at the canal entrance. C. Type 3: The anterior and posterior walls are straight. D. Type 4: While the anterior wall and posterior wall are straight, the anterior wall is angled upwards at the canal entrance.
J Korean Assoc Oral Maxillofac Surg 2022;48:149~154
https://doi.org/10.5125/jkaoms.2022.48.3.149
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