Accuracy of alveolar bone measurements from cone beam computed tomography acquired using varying settings

Cook, Valane; Timock, Adam M.; Crowe, Jennifer J.; Wang, Mansen; Covell, David A.

doi:10.1111/ocr.12072

Cited by 53 publications

(39 citation statements)

References 39 publications

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“…23 CBCT imaging can provide accurate and reliable measurements of buccal alveolar bone using either of two diverse acquisition settings, unless higher resolution imaging for other purposes is necessary. 24 Partial volume average property occurs when a specific voxel involves two structures of different densities, such as periodontal ligament and alveolar bone, for example. The density assigned to this voxel will be equivalent to the average density of the two tissues.…”

Section: Discussionmentioning

confidence: 99%

Precision, reproducibility, and accuracy of bone crest level measurements of CBCT cross sections using different resolutions

Menezes

Janson

Massaro

et al. 2015

The Angle Orthodontist

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Objective: To evaluate the precision, reproducibility, and accuracy of alveolar crest level measurements on CBCT images obtained with different voxel sizes. Materials and Methods: CBCT exams were made of 12 dried human mandibles with voxel dimensions of 0.2, 0.3, and 0.4 mm. Bone crest level was measured directly on the mandibles with a digital caliper and on CBCT images. Images were measured twice by two examiners. Intra-and interexaminer precision and reproducibility were assessed using paired and t-tests, respectively. Accuracy was evaluated using t-tests. Results: Precision and reproducibility of bone crest level tomographic measurements was good for all voxel sizes evaluated. The images with 0.2-mm voxel size showed a decreased number of intraexaminer errors. A high accuracy for measurements of bone crest level was observed for all CBCT definitions, except for the mandibular incisors using the 0.4-mm voxel size. Conclusions: Precision and reproducibility of alveolar bone level measurements were good for various voxel sizes. CBCT images demonstrated good accuracy for 0.2-mm and 0.3-mm voxel sizes. The mandibular incisor region needs better resolution than that provided by 0.4-mm voxel size for bone crest level measurements. (Angle Orthod. 2016;86:535-542.)

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Section: Discussionmentioning

confidence: 99%

Precision, reproducibility, and accuracy of bone crest level measurements of CBCT cross sections using different resolutions

Menezes

Janson

Massaro

et al. 2015

The Angle Orthodontist

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show abstract

“…In the search of literature, we found that most of the studies focusing on the measurement accuracy of periodontal bone loss/defect were in vitro studies. [7][8][9][15][16][17][18][19][20] Only one in vivo study was performed on the measurement accuracy of bone defects on the maxillary molar. 21 Although there are a few more in vivo studies with regard to periodontal bone height measurement using CBCT, two of which are case reports, 22,23 others compared different methods of measuring guided tissue regeneration-treated bone defects and furcation lesions.…”

Section: Discussionmentioning

confidence: 99%

A six-site method for the evaluation of periodontal bone loss in cone-beam CT images

Guo

et al. 2016

Dentomaxillofacial Radiology

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Objectives: In contrast to two-dimensional planar images, a measuring point is hardly repeatedly determined in a CBCT image when alveolar bone loss is assessed. Thus, the aim of the present study was to propose a six-site measuring method, which is closely related to anatomical structure, for the evaluation of alveolar bone loss in CBCT images. Methods: 150 measuring points in 11 molars and 14 premolars from 6 patients (2 males and 4 females) were included. CBCT images of the teeth were acquired prior to periodontal surgery. Four observers measured the distances between cemento-enamel junctions and the apical bases of the periodontal bone defect at the mesio-buccal, mid-buccal, disto-buccal, mesio-lingual/palatal, mid-lingual/palatal and disto-lingual/palatal sites in CBCT images. Direct measurements of the six sites were correspondingly obtained in the subsequent periodontal surgeries. Differences between the distances measured in the CBCT images and during the surgery were analysed. Interobserver and intraobserver variances were tested. Results: No statistically significant difference was found between the surgical and CBCT measurements (p 5 0.84). Diagnostic coincidence rates of four observers were 86.7%, 87.3%, 88.7% and 88.0%, respectively. The interobserver (p 5 0.95) and intraobserver (p 5 0.30) variances were not significant. Conclusions: The six-site measuring method validated in the present study may be a useful three-dimensional measuring method for the evaluation of periodontal disease.

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“…, Cook et al . ). The literature states that the use of a partial rotation (180°) can lead to 50–73% radiation dose reduction compared to a complete rotation (360°) (Cook et al .…”

Section: Discussionmentioning

confidence: 97%

Use of micro‐computed tomography for the assessment of periapical lesions in small rodents: a systematic review

et al. 2016

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This systematic review aimed to evaluate the literature on the acquisition-, reconstruction- and analysis parameters of micro-computed tomography (micro-CT) for the assessment of periapical lesions in rats and mice, and to illustrate the effect of variation in these parameters. The PubMed database was searched from 2000 to January 2015 (English-language publications) for reports on the use of micro-CT to evaluate periapical lesions in rats and mice. QUADAS criteria were used to rate the quality of the studies. To illustrate the effect of variations in acquisition-, reconstruction-, and analysis parameters on images of periapical lesions, micro-CT examination of two hemi-mandibles of mice, with periapical lesions around the first molar was undertaken. Twenty-one studies were identified, which analysed periapical lesions in rats or mice using micro-CT. According to the QUADAS, no study was classified as high-, seven were classified as moderate-, and 14 as low quality. The effect of variation in parameters was that voxel size may interfere with image sharpness, reconstruction may interfere with image sharpness and contrast, and inadequate plane orientation may alter the size of the periapical lesion. Nonpersonalized ROIs resulted in areas that were not part of the periapical lesion. Changing the limits of the threshold for bone-tissue visualization increased lesion size. There is no defined protocol for acquiring and analysing micro-CT images of periapical lesions in rats and mice. Furthermore, acquisition-, reconstruction- and analysis parameters are not adequately explained, which may compromise the scientific impact of the studies.

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Accuracy of alveolar bone measurements from cone beam computed tomography acquired using varying settings

Cited by 53 publications

References 39 publications

Precision, reproducibility, and accuracy of bone crest level measurements of CBCT cross sections using different resolutions

Precision, reproducibility, and accuracy of bone crest level measurements of CBCT cross sections using different resolutions

A six-site method for the evaluation of periodontal bone loss in cone-beam CT images

Use of micro‐computed tomography for the assessment of periapical lesions in small rodents: a systematic review

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