Ultrasound crack detection in a simulated human tooth

Culjat, Martin O.; Singh, Rahul; Brown, E. R.; Neurgaonkar, R. R.; Yoon, D C; White, Shane N.

doi:10.1259/dmfr/12901010

Cited by 70 publications

(65 citation statements)

References 8 publications

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“…Ultrasound has previously been investigated as a complement to dental radiography as a tool to detect caries, fractures, and debonded restorations. [1][2][3][4] However, progress in dental ultrasound has been limited by a number of factors. The high acoustic impedances of dental tissues result in surface losses that limit the use of commercially available medical transducers and acoustic scanning gels since these are not acoustically matched to teeth.…”

Section: Introductionmentioning

confidence: 99%

Tissue mimicking materials for dental ultrasound

Singh¹,

Culjat²,

Grundfest³

et al. 2008

The Journal of the Acoustical Society of America

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While acoustic tissue mimicking materials have been explored for a variety of soft and hard biological tissues, no dental hard tissue mimicking materials have been characterized. Tooth phantoms are necessary to better understand acoustic phenomenology within the tooth environment and to accelerate the advancement of dental ultrasound imaging systems. In this study, soda lime glass and dental composite were explored as surrogates for human enamel and dentin, respectively, in terms of compressional velocity, attenuation, and acoustic impedance. The results suggest that a tooth phantom consisting of glass and composite can effectively mimic the acoustic behavior of a natural human tooth.

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Section: Introductionmentioning

confidence: 99%

Tissue mimicking materials for dental ultrasound

Singh¹,

Culjat²,

Grundfest³

et al. 2008

The Journal of the Acoustical Society of America

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“…9 VRFs can generally be diagnosed only by observation of a fracture line with or without a surgical method. [10][11][12] It would be advantageous to find more efficient methods for diagnosing VRF pre-operatively to avoid the cost and effort of unnecessary apical root resections. 13 CBCT has become useful in various fields of dentistry, including endodontic surgery, and also in various endodontic diagnostic procedures, including the assessment of root fractures.…”

Section: Introductionmentioning

confidence: 99%

Differential diagnosis of vertical root fractures using reconstructed three-dimensional models of bone defects

Komatsu

Abe²,

Yoshioka³

et al. 2014

Dentomaxillofacial Radiology

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Objectives: The purpose of this study was to evaluate the accuracy of diagnosing vertical root fractures (VRFs) by comparing the volume of bone defects in VRFs with those in nonVRFs on reconstructed three-dimensional (3D) models (TDMs) using CBCT. Methods: 32 maxillary pre-molars and anterior teeth with radiolucent areas were evaluated on pre-operative CBCT images. Of the 32 teeth, 16 had a fractured root (VRF group) and 16 had a non-fractured root (non-VRF group). The radiolucent area of each tooth was traced in each dimension [mesiodistal, buccolingual and horizontal (the apicoincisal aspect)] by two observers, and 3D images were reconstructed with the Amira ® software (Visage Imaging Inc., Richmond, Australia). The volume, V, of the TDM was divided into the coronal side and the periapical side at the horizontal slice through the apical foramen, and v was defined as the volume of the coronal side. The values of v/V were calculated for all cases. The Mann-Whitney U test was used to compare values between the VRF group and the non-VRF group (p , 0.05). A receiver operating characteristic (ROC) curve was constructed to select the optimal cut-point. Results: There was a statistically significant difference in the value of v/V between the two groups (p , 0.05). With a cut-point derived from the ROC curve, and the sensitivity, specificity and accuracy of predicting the VRFs were 1.00, 0.75 and 0.88, respectively. Conclusions: Lesions resulting from VRFs can be distinguished from those of non-VRFs on 3D CBCT images with a high degree of accuracy, based on their different 3D shapes.

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“…Studies have shown that the bracket removal procedure is related with the EMCs increase and formation of new EMCs [9][10][11][12][13] . Various methods, such as transillumination, staining, ultrasound, or optical coherence tomography (OCT) have been described in the literature for EMCs detection [14][15][16][17] . Some of these techniques (e.g., transillumination and staining) can be applied directly intraorally for EMCs visual examination and diagnosis 14) .…”

Section: Introductionmentioning

confidence: 99%

“…There are several laboratory techniques (scanning electron microscopy (SEM), stereomicroscopy, confocal optical profilometry (COP), three dimensional (3D) scanning methods) that can be employed to measure volumetric enamel loss, actual depth of enamel removed, or perform spot or line measurements of EMCs parameters 1,11,[15][16][17][18][19][20][21] . The most often methods used and described in the literature, their advantages and disadvantages in terms of quantitative EMCs characteristics examination are presented in Table 1 15 -17,22-24) .…”

Section: Introductionmentioning

confidence: 99%

Enamel microcracks in terms of orthodontic treatment: A novel method for their detection and evaluation

Dumbryte¹,

Linkevičienė

Linkevičius

et al. 2017

Dental Materials Journal

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The study aimed at introducing current available techniques for enamel microcracks (EMCs) detection, and presenting a method for direct quantitative analysis of an individual EMC. Measurements of the detailed EMCs characteristics (location, length, and width) were taken from the reconstructed images of the buccal tooth surface (teeth extracted from two age groups of patients) employing a scanning electron microscopy (SEM) and our derived formulas before and after ceramic brackets removal. Measured parameters of EMCs for younger age group were 2.41 µm (width), 3.68 mm (length) before and 2.73 µm, 3.90 mm after debonding; for older -4.03 µm, 4.35 mm before and 4.80 µm, 4.37 mm after brackets removal. Following debonding EMCs increased for both groups, however the changes in width and length were statistically insignificant. Regardless of the age group, proposed method enabled precise detection of the same EMC before and after debonding, and quantitative examination of its characteristics.

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Ultrasound crack detection in a simulated human tooth

Abstract: A unique ultrasound dental crack detection system using a novel transducer; a novel coupling agent; and customized electronic and digital signal processing (DSP) algorithms has been validated in a simulated tooth.

Cited by 70 publications

References 8 publications

Tissue mimicking materials for dental ultrasound

Tissue mimicking materials for dental ultrasound

Differential diagnosis of vertical root fractures using reconstructed three-dimensional models of bone defects

Enamel microcracks in terms of orthodontic treatment: A novel method for their detection and evaluation

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