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Anatomic Study of Mandibular Posterior Teeth Using Cone-beam Computed Tomography for Endodontic Surgery.
J Endod 2018; 44(5):738-743JE

Abstract

INTRODUCTION

The present study aimed to anatomically assess mandibular posterior teeth using cone-beam computed tomographic (CBCT) imaging for endodontic surgery.

METHODS

A total of 170 CBCT scans were evaluated for anatomic variations of mandibular posterior teeth. All the scans were obtained using a Planmeca Promax CBCT unit (Planmeca, Helsinki, Finland) with exposure settings of 90 kVp, 12 mA, 12 seconds, and 0.3-mm resolution. All CBCT images were reconstructed by Romexis Viewer 3.8.2. software (Planmeca) on a 16-inch LCD monitor (22MP47HQ; LG, Seoul, South Korea), and axial, coronal and sagittal views were evaluated.

RESULTS

The thickest buccal cortical plate was observed over the distal root of second molars (12.30 mm) among the molar teeth and over the second premolar root (5.41 mm) among the premolar teeth. The thinnest buccal cortical plate was observed over both the first and second premolar roots (0.42 mm) and over the mesial root of the first molar (0.62 mm) tooth. A 20.38-mm section was removed for surgical access during buccal resection of the distal root of the left second molar, and the closest distance from the apex to the inferior alveolar canal was 0 mm.

CONCLUSIONS

Adequate knowledge of the anatomic dimensions of teeth and their surrounding structures is imperative for endodontic surgery. Information concerning the root thickness of mandibular posterior teeth at the site of root resection (apical 3 mm), buccal cortical plate thickness, and the distance from the apex of each tooth to the inferior alveolar canal and mental foramen can guide the surgeon before and during surgery.

Authors+Show Affiliations

Department of Oral and Maxillofacial Surgery, Urmia University of Medical Sciences, Urmia, Iran.Department of Oral and Maxillofacial Radiology, Urmia University of Medical Sciences, Urmia, Iran.School of Dentistry, Urmia University of Medical Sciences, Urmia, Iran. Electronic address: nedalotfi89@yahoo.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

29550011

Citation

Zahedi, Salahaddin, et al. "Anatomic Study of Mandibular Posterior Teeth Using Cone-beam Computed Tomography for Endodontic Surgery." Journal of Endodontics, vol. 44, no. 5, 2018, pp. 738-743.
Zahedi S, Mostafavi M, Lotfirikan N. Anatomic Study of Mandibular Posterior Teeth Using Cone-beam Computed Tomography for Endodontic Surgery. J Endod. 2018;44(5):738-743.
Zahedi, S., Mostafavi, M., & Lotfirikan, N. (2018). Anatomic Study of Mandibular Posterior Teeth Using Cone-beam Computed Tomography for Endodontic Surgery. Journal of Endodontics, 44(5), pp. 738-743. doi:10.1016/j.joen.2018.01.016.
Zahedi S, Mostafavi M, Lotfirikan N. Anatomic Study of Mandibular Posterior Teeth Using Cone-beam Computed Tomography for Endodontic Surgery. J Endod. 2018;44(5):738-743. PubMed PMID: 29550011.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Anatomic Study of Mandibular Posterior Teeth Using Cone-beam Computed Tomography for Endodontic Surgery. AU - Zahedi,Salahaddin, AU - Mostafavi,Maryam, AU - Lotfirikan,Neda, Y1 - 2018/03/15/ PY - 2017/06/18/received PY - 2018/01/19/revised PY - 2018/01/30/accepted PY - 2018/3/20/pubmed PY - 2018/11/21/medline PY - 2018/3/19/entrez KW - Cone-beam computed tomography KW - mandible KW - molar KW - premolar SP - 738 EP - 743 JF - Journal of endodontics JO - J Endod VL - 44 IS - 5 N2 - INTRODUCTION: The present study aimed to anatomically assess mandibular posterior teeth using cone-beam computed tomographic (CBCT) imaging for endodontic surgery. METHODS: A total of 170 CBCT scans were evaluated for anatomic variations of mandibular posterior teeth. All the scans were obtained using a Planmeca Promax CBCT unit (Planmeca, Helsinki, Finland) with exposure settings of 90 kVp, 12 mA, 12 seconds, and 0.3-mm resolution. All CBCT images were reconstructed by Romexis Viewer 3.8.2. software (Planmeca) on a 16-inch LCD monitor (22MP47HQ; LG, Seoul, South Korea), and axial, coronal and sagittal views were evaluated. RESULTS: The thickest buccal cortical plate was observed over the distal root of second molars (12.30 mm) among the molar teeth and over the second premolar root (5.41 mm) among the premolar teeth. The thinnest buccal cortical plate was observed over both the first and second premolar roots (0.42 mm) and over the mesial root of the first molar (0.62 mm) tooth. A 20.38-mm section was removed for surgical access during buccal resection of the distal root of the left second molar, and the closest distance from the apex to the inferior alveolar canal was 0 mm. CONCLUSIONS: Adequate knowledge of the anatomic dimensions of teeth and their surrounding structures is imperative for endodontic surgery. Information concerning the root thickness of mandibular posterior teeth at the site of root resection (apical 3 mm), buccal cortical plate thickness, and the distance from the apex of each tooth to the inferior alveolar canal and mental foramen can guide the surgeon before and during surgery. SN - 1878-3554 UR - https://www.unboundmedicine.com/medline/citation/29550011/Anatomic_Study_of_Mandibular_Posterior_Teeth_Using_Cone_beam_Computed_Tomography_for_Endodontic_Surgery_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0099-2399(18)30070-0 DB - PRIME DP - Unbound Medicine ER -