scholarly journals Intraoral scanner featuring transillumination for proximal caries detection. An in vitro validation study on permanent posterior teeth.

2021 ◽  
pp. 103841
Author(s):  
Stavroula Michou ◽  
Christoph Vannahme ◽  
Azam Bakhshandeh ◽  
Kim R. Ekstrand ◽  
Ana R. Benetti
Keyword(s):  
Validation Study ◽  
Caries Detection ◽  
Intraoral Scanner ◽  
Posterior Teeth ◽  
Proximal Caries

Development of a Fluorescence-Based Caries Scoring System for an Intraoral Scanner: An in vitro Study

2020 ◽  
Vol 54 (4) ◽  
pp. 324-335
Author(s):  
Stavroula Michou ◽  
Ana Raquel Benetti ◽  
Christoph Vannahme ◽  
Pétur Gordon Hermannsson ◽  
Azam Bakhshandeh ◽  
...  
Keyword(s):  
Scoring System ◽  
State Of The Art ◽  
Assessment System ◽  
Detection Methods ◽  
Caries Detection ◽  
Fluorescence Signal ◽  
Radiographic Assessment ◽  
Intraoral Scanner ◽  
Posterior Teeth ◽  
Occlusal Surfaces

<b><i>Objectives:</i></b> To develop an automated fluorescence-based caries scoring system for an intraoral scanner and to<i></i>test the performance of the system compared to state-of-the-art methods. <b><i>Methods:</i></b> Seventy-three permanent posterior teeth were scanned with a three-dimensional (3D) intraoral scanner prototype which emitted light at 415 nm. An overlay representing the fluorescence signal from the tissue was mapped onto 3D models of the teeth. Multiple examination sites (<i>n</i> = 139) on the occlusal surfaces were chosen, and their red and green fluorescence signal components were extracted. These components were used to calculate 4 mathematical functions upon which a caries scoring system for the scanner prototype could be based. Visual-tactile (International Caries Detection and Assessment System, ICDAS), radiographic (ICDAS), and histological assessments were conducted on the same examination sites. <b><i>Results:</i></b> Most index tests showed significant correlation with histology. The strongest correlation was observed for the visual-tactile examination (<i>r</i><sub>s</sub> = 0.80) followed by the scanner supported by the caries classification function that quantifies the overall fluorescence compared to sound surfaces (<i>r</i><sub>s</sub> = 0.78). Additionally, this function resulted in the highest intra-examiner reliability (κ = 0.964), and the highest sum of sensitivity (SE) and specificity (SP) (sum SE-SP: 1.60–1.84) at the 2 histological levels where the comparison with visual-tactile assessment was possible (κ = 0.886, sum SE-SP = 1.57–1.81) and at the 3 out of 4 histological levels where the comparison with radiographic assessment was possible (κ = 0.911, sum SE-SP = 1.37–1.78); the only exception was for the lesions in the outer third of dentin, where the radiographic assessment showed the highest sum SE-SP (1.78). <b><i>Conclusion:</i></b> A fluorescence-based caries scoring system was developed for the intraoral scanner showing promising performance compared to state-of-the-art caries detection methods. The intraoral scanner accompanied by an automated caries scoring system may improve objective caries detection and increase the efficiency and effectiveness of oral examinations. Furthermore, this device has the potential to support reliable monitoring of early caries lesions.

Proximal caries lesion detection using the Canary Caries Detection System: an in vitro study

2015 ◽  
Vol 7 (4) ◽  
pp. 383-390 ◽  
Author(s):  
Janja Jan ◽  
Wan Zaripah Wan Bakar ◽  
Sapna M. Mathews ◽  
Linda O. Okoye ◽  
Benjamin R. Ehler ◽  
...  
Keyword(s):  
Detection System ◽  
In Vitro Study ◽  
Lesion Detection ◽  
Vitro Study ◽  
Caries Detection ◽  
Proximal Caries ◽  
Caries Lesion

scholarly journals In‐vitro validation of near‐infrared reflection for proximal caries detection

2019 ◽  
Vol 127 (6) ◽  
pp. 515-522 ◽  
Author(s):  
Alexander Lederer ◽  
Karl‐Heinz Kunzelmann ◽  
Katrin Heck ◽  
Reinhard Hickel ◽  
Friederike Litzenburger
Keyword(s):  
Near Infrared ◽  
Caries Detection ◽  
Proximal Caries ◽  
Infrared Reflection

In vitro assessment of cone beam local computed tomography for proximal caries detection

2007 ◽  
Vol 104 (5) ◽  
pp. 699-704 ◽  
Author(s):  
Sajitha M. Kalathingal ◽  
André Mol ◽  
Donald A. Tyndall ◽  
Daniel J. Caplan ◽  
Chapel Hill
Keyword(s):  
Computed Tomography ◽  
Cone Beam ◽  
Caries Detection ◽  
Proximal Caries ◽  
In Vitro Assessment

scholarly journals Diagnostic validity of early proximal caries detection using near-infrared imaging technology on 3D range data of posterior teeth

2021 ◽  
Author(s):  
Friederike Litzenburger ◽  
Katrin Heck ◽  
Dalia Kaisarly ◽  
Karl-Heinz Kunzelmann
Keyword(s):  
Near Infrared ◽  
Caries Detection ◽  
Kappa Statistics ◽  
Range Data ◽  
Micro Computed Tomography ◽  
Human Teeth ◽  
Posterior Teeth ◽  
Proximal Caries ◽  
Initial Caries ◽  
3D Range Data

Abstract Objectives This in vitro study analysed potential of early proximal caries detection using 3D range data of teeth consisting of near-infrared reflection images at 850 nm (NIRR). Materials and methods Two hundred fifty healthy and carious permanent human teeth were arranged pairwise, examined with bitewing radiography (BWR) and NIRR and validated with micro-computed tomography. NIRR findings were evaluated from buccal, lingual and occlusal (trilateral) views according to yes/no decisions about presence of caries. Reliability assessments included kappa statistics and revealed high agreement for both methods. Statistical analysis included cross tabulation and calculation of sensitivity, specificity and AUC. Results Underestimation of caries was 24.8% for NIRR and 26.4% for BWR. Overestimation was 10.4% for occlusal NIRR and 0% for BWR. Trilateral NIRR had overall accuracy of 64.8%, overestimation of 15.6% and underestimation of 19.6%. NIRR and BWR showed high specificity and low sensitivity for proximal caries detection. Conclusions NIRR achieved diagnostic results comparable to BWR. Trilateral NIRR assessments overestimated presence of proximal caries, revealing stronger sensitivity for initial caries detection than BWR. Clinical relevance NIRR provided valid complement to BWR as diagnostic instrument. Investigation from multiple angles did not substantially improve proximal caries detection with NIRR.

scholarly journals Transillumination and HDR Imaging for Proximal Caries Detection

2018 ◽  
Vol 97 (7) ◽  
pp. 844-849 ◽  
Author(s):  
A. Lederer ◽  
K.H. Kunzelmann ◽  
R. Hickel ◽  
F. Litzenburger
Keyword(s):  
Near Infrared ◽  
Dynamic Range ◽  
Caries Detection ◽  
Micro Computed Tomography ◽  
Human Teeth ◽  
Rater Reliability ◽  
Proximal Caries ◽  
Dentin Caries ◽  
Demineralized Enamel

The purpose of this study was to develop an in vitro model for the validation of near-infrared transillumination (NIRT) for proximal caries detection, to enhance NIRT with high-dynamic-range imaging (HDRI), and to compare both methods, using micro-computed tomography (µCT) as a reference standard. Both proximal surfaces of 53 healthy or decayed permanent human teeth were examined using the Diagnocam (DC) (KaVo) and NIRT with HDRI (NIRT-HDRI). NIRT was combined with HDRI to improve the diagnostic performance by reducing under- and overexposed image areas. For NIRT-HDRI, an exposure series was captured and merged into a single HDR image. A classification was applied according to lesion depth. All surfaces were assessed twice by 2 trained examiners, and additionally with µCT for validation. The Kappa statistic was used to calculate inter-rater reliability and agreement between DC and NIRT-HDRI. Inter-rater reliability (weighted Kappa, wκ) showed very good agreement for the DC (0.90) and NIRT-HDRI (0.96). The overall agreement (wκ) was almost perfect (0.85). In the individual categories (0 to 4), the agreement (simple Kappa) ranged from almost perfect (category 4) to moderate (1 and 2) to substantial (categories 0 and 3). Sensitivity and specificity of sound surfaces, enamel, and dentin caries ranged from 0.57 to 0.99 and were similar for both methods in the different categories. NIRT-HDRI had a higher sensitivity for sound surfaces and enamel caries, as well as a higher specificity for dentin caries. Regarding the obtained images, HDRI allowed for the detection of caries within a greater range of luminance levels, resulting in a more detailed visualization of structures without under- or overexposure. However, HDRI this did not improve the diagnostics significantly. Distinguishing between a processed demineralized enamel and dentin lesions appears to be a problem specific to NIRT and cannot be balanced using HDRI.

scholarly journals The Effect of Delayed Scanning of Photostimulable Phosphor Plates on Inter-proximal Caries Detection

2019 ◽  
pp. 1-7
Author(s):  
Ehsan Tavakoli ◽  
Jale Shafiei Sabet ◽  
Mahjube Entezarghaem ◽  
Fatemeh Nadaf ◽  
Elahe Shafiei Rad
Keyword(s):  
Diagnostic Accuracy ◽  
Observer Agreement ◽  
Caries Detection ◽  
Posterior Teeth ◽  
Proximal Caries ◽  
Significant Difference ◽  
Photostimulable Phosphor ◽  
Area Under Roc Curve ◽  
Phosphor Plates

Objectives: The aim of this study was to determine the effect of different scan delays and different kVps on the diagnostic accuracy of inter-proximal caries detection in photostimulable phosphor plates (PSPs). Materials and Methods: 45 non-cavitated extracted human posterior teeth were radiographed using the DIGORA® PSPs (Soredex Corporation, Helsinki, Finland). The plates were exposed at 60 kVp and 70 kVp were scanned immediately, 10 min, 30 min, 1h, 6 h, 24 h and 48 h after exposure. In between the exposure and the scan period, the plates were stored in light-tight boxes. The true presence of caries was determined by sectioning the teeth mesiodistally. The accuracy was expressed as the area under ROC curve (AZ). The AZs were compared using SPSS version17 software and repeated measurement test. Kappa was used to measure inter and intra observer agreement. Results: There was no significant difference between caries detection AZs of the images that were scanned immediately and within 30 min after exposure at 60 kVp and 70 kVp (P >0.05). The immediately scanned AZ at 60 kVp was significantly higher than the AZs with 6 h, 24 h and 48 h scan delays (P <0.05). the immediately scanned AZ at 70Kvp was significantly higher than the AZs of 1 h, 6 h, 24 h and 48 h (P <0.05). Conclusions: PSP scanning should not be delayed higher than 30 min in order to have an accurate proximal caries detection. Longer delays may cause loss of quality of images.

scholarly journals In vitro Comparison of Conventional Film and Direct Digital Radiography in Proximal Caries Detection

2013 ◽  
Vol 1 (2) ◽  
pp. 1-5 ◽  
Author(s):  
Seiedeh Tahereh Mohtavipour ◽  
Fatemeh Shahsavari ◽  
Alieh Sadat Javadzadeh Haghighat ◽  
Seiedeh Saeideh Mohtavipour ◽  
Milad Malekshoar ◽  
...  
Keyword(s):  
Digital Radiography ◽  
Caries Detection ◽  
Proximal Caries ◽  
Conventional Film ◽  
In Vitro Comparison

scholarly journals Diagnosis of Pit-and-fissure Caries Using Three-dimensional Scanned Images

2018 ◽  
Vol 43 (3) ◽  
pp. E152-E157 ◽  
Author(s):  
JK Mitchell ◽  
AR Furness ◽  
RJ Sword ◽  
SW Looney ◽  
WW Brackett ◽  
...  
Keyword(s):  
Intraclass Correlation ◽  
Three Dimensional ◽  
Correlation Coefficients ◽  
In Vitro Study ◽  
Assessment System ◽  
Caries Detection ◽  
Occlusal Caries ◽  
Posterior Teeth ◽  
Scanned Images

SUMMARYDiagnosis of the extent of pit-and-fissure caries has been subjective and thus difficult to teach and categorize for treatment planning. This in vitro study compares occlusal caries diagnosis of extracted posterior teeth (n=49) using three-dimensional (3D) scanned images vs visual examination, according to the International Caries Detection and Assessment System (ICDAS). The surfaces chosen for study represent all ICDAS classifications. Five experienced restorative faculty members examined scanned images for 60 seconds from a standardized series of views of each surface and scored them independently. One month later, the same teeth were examined visually by the same five raters with magnification and LED headlamps, with compressed air available. Intrarater and interrater agreement and validity were assessed using intraclass correlation coefficients (ICCs). The ICCs, ranging from 0.90 to 0.93, indicated excellent agreement between and within raters and between the raters and the gold standard ICDAS determination. This suggests that both photographs and 3D scans of pits and fissures are equally effective in diagnosing caries.

Sign in / Sign up

Export Citation Format

Share Document