Universität zu Köln

Ritter, L., Elger, M. C., Rothamel, D., Fienitz, T., Zinser, M., Schwarz, F. and Zoeller, J. E. (2014). Accuracy of peri-implant bone evaluation using cone beam CT, digital intra-oral radiographs and histology. Dentomaxillofac. Radiol., 43 (6). LONDON: BRITISH INST RADIOLOGY. ISSN 1476-542X

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Abstract

Objectives: The present study assesses the accuracy of three-dimensional (3D) cone beam CT (CBCT) and intra-oral radiography (CR) in visualizing peri-implant bone compared with histology. Methods: 26 titanium dental implants were placed in dog jaws with chronic type vestibular defects. After a healing period of 2 and 8 weeks (n = 12 dogs) the animals were sacrificed. CBCT scans and CR of the specimen were recorded. Dissected blocks were prepared, and histomorphometric analysis was performed. Both modalities were measured twice by two observers and compared with histomorphometry regarding bone levels and thickness around implants as well as length and diameter of implants. Results: Measurements of CBCT correlated well with histomorphometry of the vestibular bone level, oral bone thickness and implant length (all p-values <0.05). Compared with histomorphometry, the mean differences between CBCT and histomorphometry were between 0.06 and 2.61mm. Mesial bone level (MBL) and distal bone level (DBL) were underestimated by both CR and CBCT. CR and histology measurements were only significantly correlated for implant length measurements. All intraclass correlations were highly significant. Conclusions: 3D CBCT provides usable information about bone in all dimensions around implants with varying accuracy. CR and CBCT perform similar in assessing MBL and DBL, but, within its limits, the CBCT can assess oral and buccal bone. Metallic artefacts limit the visualization quality of bone around implants and further research could elucidate the value of post-processing algorithms. When information about osseous perforation of implants is needed, CBCT may still provide clinically valuable information.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Ritter, L. UNSPECIFIED UNSPECIFIED UNSPECIFIED Elger, M. C. UNSPECIFIED UNSPECIFIED UNSPECIFIED Rothamel, D. UNSPECIFIED UNSPECIFIED UNSPECIFIED Fienitz, T. UNSPECIFIED UNSPECIFIED UNSPECIFIED Zinser, M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Schwarz, F. UNSPECIFIED UNSPECIFIED UNSPECIFIED Zoeller, J. E. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-435235
DOI:	10.1259/dmfr.20130088
Journal or Publication Title:	Dentomaxillofac. Radiol.
Volume:	43
Number:	6
Date:	2014
Publisher:	BRITISH INST RADIOLOGY
Place of Publication:	LONDON
ISSN:	1476-542X
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language COMPUTED-TOMOGRAPHY; IN-VITRO; PERIODONTAL DEFECTS; VOLUME TOMOGRAPHY; NATIVE PIG; DIAGNOSIS; IMAGES; REGENERATION; MANDIBLES; ARTIFACTS Multiple languages Dentistry, Oral Surgery & Medicine; Radiology, Nuclear Medicine & Medical Imaging Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/43523