Imaging Sci Dent.  2018 Dec;48(4):269-275. 10.5624/isd.2018.48.4.269.

Comparing the precision of panoramic radiography and cone-beam computed tomography in avoiding anatomical structures critical to dental implant surgery: A retrospective study

• Özalp O
• TezeriÅŸener HA
• Kocabalkan B
• Büyükkaplan US
• Özarslan
• ÅžimÅŸek Kaya G
• Altay MA
• Sindel A

• KMID: 2450167
• DOI: http://doi.org/10.5624/isd.2018.48.4.269

Abstract

PURPOSE
The aim of this study was to evaluate the correlations between measurements made using panoramic radiography and cone-beam computed tomography (CBCT) based on certain anatomical landmarks of the jaws, with the goal of preventing complications due to inaccurate measurements in the pre-surgical planning phase of dental implant placement.
MATERIALS AND METHODS
A total of 56 individuals who underwent panoramic radiography and a CBCT evaluation before dental implant surgery were enrolled in the study. Measurements were performed to identify the shortest vertical distance between the alveolar crest and neighboring anatomical structures, including the maxillary sinus, nasal floor, mandibular canal, and foramen mentale. The differences between the measurements on panoramic radiography and CBCT images were statistically analyzed.
RESULTS
Statistically significant differences were observed between the measurements on panoramic radiography and CBCT for all anatomical structures (P < .05). The correlation coefficients (r) between the paired samples obtained from panoramic radiography and CBCT were closely correlated (P < .05), with r values varying from 0.921 and 0.979 for different anatomical regions.
CONCLUSION
The results of this study support the idea that panoramic radiography might provide sufficient information on bone height for preoperative implant planning in routine cases or when CBCT is unavailable. However, an additional CBCT evaluation might be helpful in cases where a safety margin cannot be respected due to insufficient bone height.

Keyword

Cone-Beam Computed Tomography; Dental Implants; Radiography, Panoramic

MeSH Terms

Cone-Beam Computed Tomography*
Dental Implants*
Jaw
Maxillary Sinus
Radiography, Panoramic*
Retrospective Studies*
Dental Implants

Figure

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  Fig. 1 Measurement of the shortest vertical distance between the alveolar crest and the bottom of the maxillary sinus on a panoramic image (A) and a cone-beam computed tomography image (B).

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  Fig. 2 Measurement of the shortest vertical distance between the alveolar crest and the bottom of the nasal floor on a panoramic image (A) and a cone-beam computed tomography image (B).

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  Fig. 3 Measurement of the shortest vertical distance between the alveolar crest and the top of the mandibular canal on a panoramic image (A) and a cone-beam computed tomography image (B).

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  Fig. 4 Measurement of the shortest vertical distance between the alveolar crest and the top of the foramen mentale on a panoramic image (A) and a cone-beam computed tomography image (B).

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