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Fig. 2 | BMC Oral Health

Fig. 2

From: Investigating the anatomical relationship between the maxillary molars and the sinus floor in a Chinese population using cone-beam computed tomography

Fig. 2

Different types of vertical relationships between the MSF and the root apices of the maxillary molars. a. Type I: the MSF is located above the connection between the buccal and palatal root apices, b. Type II: the MSF is located below the connection between the buccal and palatal root apices (without an apical protrusion over the MSF), c. Type III: an apical protrusion is observed over the MSF at the buccal root apex, d. Type IV: an apical protrusion is observed over the MSF at the palatal root apex, and e. Type V: apical protrusions are observed over the MSF at the buccal and palatal root apices

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BMC Oral Health

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