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Dent Mater. 2018 Apr;34(4):619-628. doi: 10.1016/j.dental.2018.01.008. Epub 2018 Feb 1.

Application of radiopaque micro-particle fillers for 3-D imaging of periodontal pocket analogues using cone beam CT.

Author information

1
Department of Oral Biology, Augusta University, Augusta, GA, USA; Department of Periodontics, The Dental College of Georgia at Augusta University, Augusta, GA, USA. Electronic address: melashiry@augusta.edu.
2
Department of Oral Biology, Augusta University, Augusta, GA, USA; Department of Periodontics, The Dental College of Georgia at Augusta University, Augusta, GA, USA.
3
Department of Diagnostic Science, The Dental College of Georgia at Augusta University, Augusta, GA, USA.
4
Department of Prosthodontics, The Dental College of Georgia at Augusta University, Augusta, GA, USA.
5
Department of Biostatistics, Augusta University, Augusta, GA, USA.
6
Department of Periodontics, The Dental College of Georgia at Augusta University, Augusta, GA, USA.
7
School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, USA.
8
Department of General Dentistry, Augusta University, Augusta, GA, USA.
9
School of Materials Engineering, Purdue University, West Lafayette, IN, USA.

Abstract

BACKGROUND:

Periodontitis is an infectious/inflammatory disease most often diagnosed by deepening of the gingival sulcus, which leads to periodontal pockets (PPs) conventional manual periodontal probing does not provide detailed information on the three-dimensional (3-D) nature of PPs.

OBJECTIVES:

To determine whether accurate 3-D analyses of the depths and volumes of calibrated PP analogues (PPAs) can be obtained by conventional cone beam computed tomography (CBCT) coupled with novel radiopaque micro-particle fillers (described in the companion paper) injected into the PPAs.

METHODS:

Two PPA models were employed: (1) a human skull model with artificial gingiva applied to teeth with alveolar bone loss and calibrated PPAs, and (2) a pig jaw model with alveolar bone loss and surgically-induced PPAs The PPAs were filled with controlled amounts of radiopaque micro-particle filler using volumetric pipetting Inter-method and intra-method agreement tests were then used to compare the PPA depths and volumes obtained from CBCT images with values obtained by masked examiners using calibrated manual methods.

RESULTS:

Significant inter-method agreement (0.938-0.991) and intra-method agreement (0.94-0.99) were obtained when comparing analog manual data to digital CBCT measurements enabled by the radiopaque filler.

SIGNIFICANCE:

CBCT imaging with radiopaque micro-particle fillers is a plausible means of visualizing and digitally assessing the depths, volumes, and 3-D shapes of PPs This approach could transform the diagnosis and treatment planning of periodontal disease, with particular initial utility in complex cases Efforts to confirm the clinical practicality of these fillers are currently in progress.

PMID:
29395473
DOI:
10.1016/j.dental.2018.01.008
[Indexed for MEDLINE]

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