J Korean Assoc Oral Maxillofac Surg.  2011 Feb;37(1):43-48. 10.5125/jkaoms.2011.37.1.43.

An anatomical study on the mandibular medial surface by CBCT analysis for safer implant placement

• Lee JK
• Kim YG

• KMID: 2189805
• DOI: http://doi.org/10.5125/jkaoms.2011.37.1.43

Abstract

INTRODUCTION
This study examined the anatomical morphology of the medial surface of the posterior mandible using 3-dimensional cone-beam computed tomography (CT) images to reduce the number of complications related to dental implant placement.
MATERIALS AND METHODS
Fifty patients were enrolled in this study with an average age (+/-standard deviation) of 44.28 (+/-13.05). On the coronal views cone-beam CT of the first molars, the distance between the top of the canal and alveolar crest vertical distance (VD), the distance between the upper-most point of the canal and the point perpendicular to the lingual cortical margin of the mandible lingual distance (LD), the location of the starting point of VD for reducing from the vertical reference line (VD point), and the inclination of the mandibular medial surface (lingual inclination) were measured, and a statistical evaluation was performed using SPSS for Windows version 15.0.
RESULTS
The mean VD0 was 16.91+/-2.47 mm and VDx decreased with increasing x value. The mean LD was 5.27+/-1.36 mm. The VD began to decrease at the mean location of 6.12+/-0.96 mm from the vertical reference line. The mean lingual inclination was 1.52+/-0.72degrees.
CONCLUSION
These results will assist in the accurate placement of dental implants and the reduction of complications, particularly in the case of preoperative implant planning using only 2-dimensional imaging methods. (ex. panoramic radiography)

Keyword

Cone-beam computed tomography; Implant placement; Complications; Preoperative implant planning

MeSH Terms

Cone-Beam Computed Tomography
Dental Implants
Humans
Mandible
Molar
Dental Implants

Figure

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  Fig. 1. Digital torque meter used to measure the peak value of resistance to reverse torque rotation in N cm.

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  Fig. 2. Mean removal torque values (N cm) of implants 4 weeks after implantation.(TSV: Tapered Screw-Vent)

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  Fig. 3. Mean removal torque values (N cm) of implants 8 weeks after implantation.(TSV: Tapered Screw-Vent)

Reference

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