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Predapramote V, Tantilertanant Y, Srisawasdi S. Evaluation of resin infiltration for inhibiting initial caries progression: An in vitro study using Micro-Computed Tomographic analysis. Saudi Dent J 2024; 36:745-750. [PMID: 38766302 PMCID: PMC11096623 DOI: 10.1016/j.sdentj.2024.03.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 03/01/2024] [Accepted: 03/04/2024] [Indexed: 05/22/2024] Open
Abstract
Objective To evaluate the changes in lesion depth and mineral density of resin infiltration-treated white spot lesions against a simulated oral environment using thermal and acidic challenges in vitro. Materials and methods Two enamel slabs were prepared from each buccal surface of permanent human premolars, for a total of 56 slabs. Artificial white spot lesions were induced. One specimen was treated with resin infiltration, while the other was used as an untreated control. A micro-CT was used to assess the lesion depth and mineral density of each specimen. Subsequently, all specimens were subjected to 10,000 cycles of thermocycling and pH cycling for 10 days before being re-evaluated using the micro-CT. Lesion depth and mineral density were examined and compared between before and after aging procedures within each group by the paired sample t-test. The independent samples t-test was utilized to compare lesion depth progression and percentage change of mineral density between groups. Results After aging, there was both a significant lesion depth progression and a mineral loss in the control and resin infiltration groups. Mean lesion depth progression was 132.88 ± 4.18 µm for the control group and 52.31 ± 4.16 µm for resin infiltration group. Percentage mineral density loss as a percentage for the control and resin infiltration groups were 16.1 ± 0.64 % and 8.83 ± 0.30 %, respectively. The resin infiltration group demonstrated a significantly lower mean lesion depth progression and percentage changes in mineral loss compared to the control group. Conclusions The lesion depth and mineral density changes in the resin infiltrated-treated group were lower than untreated white spot lesions after aging procedures using thermal and acidic challenges. Clinical significance Resin infiltration is a promising approach to inhibit the progression of white spot lesions related to the initial stage of dental caries.
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Affiliation(s)
- Vongnart Predapramote
- Department of Operative Dentistry, Faculty of Dentistry, Chulalongkorn University, Henri-Dunant Road, Pathumwan, Bangkok 10330, Thailand
| | - Yanee Tantilertanant
- Department of Operative Dentistry, Faculty of Dentistry, Chulalongkorn University, Henri-Dunant Road, Pathumwan, Bangkok 10330, Thailand
| | - Sirivimol Srisawasdi
- Department of Operative Dentistry, Faculty of Dentistry, Chulalongkorn University, Henri-Dunant Road, Pathumwan, Bangkok 10330, Thailand
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2
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Wu W, Oguz UM, Banga A, Zhao S, Thota AK, Gadamidi VK, Vasa CH, Harmouch KM, Naser A, Tieliwaerdi X, Chatzizisis YS. 3D reconstruction of coronary artery bifurcations from intravascular ultrasound and angiography. Sci Rep 2023; 13:13031. [PMID: 37563354 PMCID: PMC10415353 DOI: 10.1038/s41598-023-40257-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Accepted: 08/07/2023] [Indexed: 08/12/2023] Open
Abstract
Coronary bifurcation lesions represent a challenging anatomical subset, and the understanding of their 3D anatomy and plaque composition appears to play a key role in devising the optimal stenting strategy. This study proposes a new approach for the 3D reconstruction of coronary bifurcations and plaque materials by combining intravascular ultrasound (IVUS) and angiography. Three patient-specific silicone bifurcation models were 3D reconstructed and compared to micro-computed tomography (µCT) as the gold standard to test the accuracy and reproducibility of the proposed methodology. The clinical feasibility of the method was investigated in three diseased patient-specific bifurcations of varying anatomical complexity. The IVUS-based 3D reconstructed bifurcation models showed high agreement with the µCT reference models, with r2 values ranging from 0.88 to 0.99. The methodology successfully 3D reconstructed all the patient bifurcations, including plaque materials, in less than 60 min. Our proposed method is a simple, time-efficient, and user-friendly tool for accurate 3D reconstruction of coronary artery bifurcations. It can provide valuable information about bifurcation anatomy and plaque burden in the clinical setting, assisting in bifurcation stent planning and education.
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Affiliation(s)
- Wei Wu
- Center for Digital Cardiovascular Innovations, Division of Cardiovascular Medicine, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Usama M Oguz
- Center for Digital Cardiovascular Innovations, Division of Cardiovascular Medicine, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Akshat Banga
- Center for Digital Cardiovascular Innovations, Division of Cardiovascular Medicine, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Shijia Zhao
- Center for Digital Cardiovascular Innovations, Division of Cardiovascular Medicine, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Anjani Kumar Thota
- Center for Digital Cardiovascular Innovations, Division of Cardiovascular Medicine, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Vinay Kumar Gadamidi
- Center for Digital Cardiovascular Innovations, Division of Cardiovascular Medicine, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Charu Hasini Vasa
- Center for Digital Cardiovascular Innovations, Division of Cardiovascular Medicine, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Khaled M Harmouch
- Center for Digital Cardiovascular Innovations, Division of Cardiovascular Medicine, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Abdallah Naser
- Center for Digital Cardiovascular Innovations, Division of Cardiovascular Medicine, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Xiarepati Tieliwaerdi
- Center for Digital Cardiovascular Innovations, Division of Cardiovascular Medicine, Miller School of Medicine, University of Miami, Miami, FL, USA
| | - Yiannis S Chatzizisis
- Center for Digital Cardiovascular Innovations, Division of Cardiovascular Medicine, Miller School of Medicine, University of Miami, Miami, FL, USA.
- Division of Cardiovascular Medicine, Leonard M. Miller School of Medicine, University of Miami Health System, University of Miami, 1120 NW 14th Street, Suite 1124, Miami, FL, 33136, USA.
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3
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Yeslam HE, AlZahrani SJ. Time-dependent effect of intense capsule-coffee and bleaching on the color of resin-infiltrated enamel white spot lesions: an in vitro study. PeerJ 2022; 10:e14135. [PMID: 36221260 PMCID: PMC9548318 DOI: 10.7717/peerj.14135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 09/06/2022] [Indexed: 01/21/2023] Open
Abstract
Background and Objectives White spot lesions (WSLs) are a common problem that can be conservatively managed by resin infiltration. Consumption of dark beverages such as coffee causes staining of dental hard tissues, which can deteriorate the esthetic qualities of treated WSLs. The aims of this study were to investigate the effect of dark coffee heavy consumption on ICON® resin infiltrated WSLs and the influence of bleaching on them after staining. Methods Twenty surfaces from sound human extracted third molars were used in the study. Two square-shaped buccal and lingual window areas had artificially created WSLs (received buccal resin infiltration afterward). Using VITA Easyshade, the baseline ΔE was recorded. Espresso coffee was used to immerse all surfaces for 8 days. The color coordinates according to CIE LAB were recorded for all surfaces at 2, 4, 6, and 8 days of immersion, and ΔE was calculated at each timepoint. After 8 days, in-office bleaching was applied to all surfaces according to the manufacturer's instructions and the color. Coordinates and ΔE were recorded. For statistical analysis, an independent sample t-test was used to compare each group. A general linear mixed model (GLMM) repeated measure ANOVA was applied for statistical analysis of L*and changes due to staining over time. Results Analysis of time as a main effect on the L values of surfaces was statistically highly significant (p < 0.01). The interaction of time with surfaces under investigation and type of surface (test vs. control) as a main effect were non-significant (p = 0.47 and p = 0.35, respectively). Bleaching showed a significant difference in color lightness in both test and control surfaces compared to the mean L value at 8 days of staining (p < 0.01). Conclusion Capsule-coffee consumption gradually influences the esthetic of resin infiltration on treated teeth. However, bleaching materials might restore an esthetic shade.
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Affiliation(s)
- Hanin E. Yeslam
- Department of Restorative Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Saeed J. AlZahrani
- Department of Restorative Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
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4
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Le N, Lu J, Tang P, Chung KH, Subhash H, Kilpatrick-Liverman L, Wang RK. Intraoral optical coherence tomography and angiography combined with autofluorescence for dental assessment. BIOMEDICAL OPTICS EXPRESS 2022; 13:3629-3646. [PMID: 35781964 PMCID: PMC9208603 DOI: 10.1364/boe.460575] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 05/20/2022] [Accepted: 05/21/2022] [Indexed: 05/11/2023]
Abstract
There remains a clinical need for an accurate and non-invasive imaging tool for intraoral evaluation of dental conditions. Optical coherence tomography (OCT) is a potential candidate to meet this need, but the design of current OCT systems limits their utility in the intraoral examinations. The inclusion of light-induced autofluorescence (LIAF) can expedite the image collection process and provides a large field of view for viewing the condition of oral tissues. This study describes a novel LIAF-OCT system equipped with a handheld probe designed for intraoral examination of microstructural (via OCT) and microvascular information (via OCT angiography, OCTA). The handheld probe is optimized for use in clinical studies, maintaining the ability to detect and image changes in the condition of oral tissue (e.g., hard tissue damage, presence of dental restorations, plaque, and tooth stains). The real-time LIAF provides guidance for OCT imaging to achieve a field of view of approximately 6.9 mm × 7.8 mm, and a penetration depth of 1.5 mm to 3 mm depending on the scattering property of the target oral tissue. We demonstrate that the proposed system is successful in capturing reliable depth-resolved images from occlusal and palatal surfaces and offers added design features that can enhance its usability in clinical settings.
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Affiliation(s)
- Nhan Le
- Department of Bioengineering,
University of Washington, Seattle, WA
98195, USA
- These authors contributed equally to this
work
| | - Jie Lu
- Department of Bioengineering,
University of Washington, Seattle, WA
98195, USA
- These authors contributed equally to this
work
| | - Peijun Tang
- Department of Bioengineering,
University of Washington, Seattle, WA
98195, USA
| | - Kwok-Hung Chung
- Department of Restorative Dentistry,
University of Washington, Seattle, WA
98195, USA
| | | | | | - Ruikang K. Wang
- Department of Bioengineering,
University of Washington, Seattle, WA
98195, USA
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5
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Kreher D, Park KJ, Schmalz G, Schulz-Kornas E, Haak R, Ziebolz D. Evaluation of quantitative light-induced fluorescence to assess lesion depth in cavitated and non-cavitated root caries lesions - An in vitro study. Photodiagnosis Photodyn Ther 2021; 37:102675. [PMID: 34906738 DOI: 10.1016/j.pdpdt.2021.102675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 11/21/2021] [Accepted: 12/06/2021] [Indexed: 12/28/2022]
Abstract
BACKGROUND This in vitro study aimed to assess carious lesions on root surfaces using quantitative light-induced fluorescence (QLF) and to compare the readings with axial lesion depth on µCT. METHODS The root surfaces of 107 extracted human teeth were included after visual-tactile inspection. For further analysis, the following parameters were assessed: clinical findings (non-cavitated: leathery or hard, cavitated), QLF- (QLF-D Biluminator 2+), and µCT-images (Bruker Skyscan 1172). The shape of the undamaged tooth surface of the cavitated lesions was virtually re-constructed during µCT analysis. Clinical surface texture,% fluorescence loss, and lesion depth (µCT) were determined. STATISTICAL ANALYSIS chi²-test, Spearman-Rho test, regression analysis. RESULTS ∆F was significantly lower in non-cavitated leathery (-50.37 ± 15.10) and cavitated (-61.23 ± 9.92) compared to non-cavitated surfaces with a hard texture (-17.04 ± 16.10, p < 0.01). For non-cavitated surfaces, a negative correlation was observed between ∆F and lesion depth in µCT images regardless of texture (-0.748, p < 0.01). Regression analysis revealed that ∆F predicted lesion depth in µCT for non-cavitated surfaces (β: 0.703, CI95: 0.67--0.43, p < 0.01). CONCLUSION The percentage of fluorescence loss (∆F) in QLF predicted lesion depth of non-cavitated demineralized root surfaces. Therefore, QLF can be recommended for estimating the lesion depth of carious root lesions and seems to expand the possibilities of follow-up and lesion monitoring, especially for non-cavitated surfaces.
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Affiliation(s)
- Deborah Kreher
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, Liebigstr. 12, Leipzig 04103, Germany
| | - Kyung-Jin Park
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, Liebigstr. 12, Leipzig 04103, Germany
| | - Gerhard Schmalz
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, Liebigstr. 12, Leipzig 04103, Germany
| | - Ellen Schulz-Kornas
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, Liebigstr. 12, Leipzig 04103, Germany
| | - Rainer Haak
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, Liebigstr. 12, Leipzig 04103, Germany
| | - Dirk Ziebolz
- Department of Cariology, Endodontology and Periodontology, University of Leipzig, Liebigstr. 12, Leipzig 04103, Germany.
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6
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Radiographic diagnosis of proximal caries is not affected by exposure protocols and presence of high-density material on systems with automatic exposure compensation. Oral Radiol 2021; 38:356-362. [PMID: 34529235 DOI: 10.1007/s11282-021-00565-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2021] [Accepted: 09/06/2021] [Indexed: 10/20/2022]
Abstract
OBJECTIVES To investigate the performance of radiographic systems with automatic exposure compensation (AEC) on the caries diagnosis in images acquired with different exposure parameters and in the presence of high-density material. Also, the image quality was assessed. METHODS Forty posterior teeth (80 proximal surfaces) were radiographed using a phosphor plate and a CMOS system. Images were acquired with different exposure times (0.06, 0.10 and 0.16 s) and kilovoltages (60 and 70kVp), in the absence and presence of high-density material in the X-rayed region (control and high-density groups). Five radiologists assessed the caries using a 5-point scale. Diagnostic values were compared using two-way ANOVA. RESULTS For both radiographic systems, there were no significant differences in the area under the ROC curve (0.60-0.73), sensitivity (0.79-0.87) and specificity (0.29-0.48) between the control and high-density groups, exposure times or kilovoltages (p > 0.05). For image quality, scores assigned to the control and high-density groups were similar in each exposure protocol in both systems. CONCLUSIONS The presence of high-density material, exposure time and kilovoltage did not affect the caries diagnosis in any of the systems tested. It is recommended to use protocols with lower doses to reduce the patient's exposure.
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7
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De Araujo Faria V, Azimbagirad M, Viani Arruda G, Fernandes Pavoni J, Cezar Felipe J, Dos Santos EMCMF, Murta Junior LO. Prediction of Radiation-Related Dental Caries Through PyRadiomics Features and Artificial Neural Network on Panoramic Radiography. J Digit Imaging 2021; 34:1237-1248. [PMID: 34254199 DOI: 10.1007/s10278-021-00487-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 11/19/2020] [Accepted: 06/22/2021] [Indexed: 12/24/2022] Open
Abstract
The prediction and detection of radiation-related caries (RRC) are crucial to manage the side effects of the head and the neck cancer (HNC) radiotherapy (RT). Despite the demands for the prediction of RRC, no study proposes and evaluates a prediction method. This study introduces a method based on artificial intelligence neural network to predict and detect either regular caries or RRC in HNC patients under RT using features extracted from panoramic radiograph. We selected fifteen HNC patients (13 men and 2 women) to analyze, retrospectively, their panoramic dental images, including 420 teeth. Two dentists manually labeled the teeth to separate healthy and teeth with either type caries. They also labeled the teeth by resistant and vulnerable, as predictive labels telling about RT aftermath caries. We extracted 105 statistical/morphological image features of the teeth using PyRadiomics. Then, we used an artificial neural network classifier (ANN), firstly, to select the best features (using maximum weights) and then label the teeth: in caries and non-caries while detecting RRC, and resistant and vulnerable while predicting RRC. To evaluate the method, we calculated the confusion matrix, receiver operating characteristic (ROC), and area under curve (AUC), as well as a comparison with recent methods. The proposed method showed a sensibility to detect RRC of 98.8% (AUC = 0.9869) and to predict RRC achieved 99.2% (AUC = 0.9886). The proposed method to predict and detect RRC using neural network and PyRadiomics features showed a reliable accuracy able to perform before starting RT to decrease the side effects on susceptible teeth.
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Affiliation(s)
- Vanessa De Araujo Faria
- Department of Radiology, Faculty of Medicine, University of São Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Mehran Azimbagirad
- Department of Medical Science and Health, University of Western Brittany, 12 Av Foch, IBRBS LATIM Lab, 29200, Brest, France.
| | - Gustavo Viani Arruda
- Department of Radiology, Faculty of Medicine, University of São Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Juliana Fernandes Pavoni
- Department of Physics, Faculty of Philosophy, Science and Languages, University of São Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Joaquim Cezar Felipe
- Department of Computing and Mathematics, Faculty of Philosophy, Science and Languages, University of São Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | | | - Luiz Otavio Murta Junior
- Department of Computing and Mathematics, Faculty of Philosophy, Science and Languages, University of São Paulo, Ribeirao Preto, Sao Paulo, Brazil
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8
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Braga AS, de Melo FPDSR, Saldanha LL, Dokkedal AL, Meissner T, Bemmann M, Schulz-Kornas E, Haak R, Abdelbary MMH, Conrads G, Magalhães AC, Esteves-Oliveira M. The Effect of Solutions Containing Extracts of Vochysia tucanorum Mart., Myrcia bellaCambess., Matricaria chamomilla L. and Malva sylvestris L. on Cariogenic Bacterial Species and Enamel Caries Development. Caries Res 2021; 55:193-204. [PMID: 34000728 DOI: 10.1159/000515234] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Accepted: 02/14/2021] [Indexed: 11/19/2022] Open
Abstract
This study evaluated the effect of experimental solutions containing plant extracts on bacterial species and enamel caries prevention. Microcosm biofilm was produced from human saliva mixed with McBain saliva (0.2% sucrose) on bovine enamel for 5 days (3 days under anaerobiosis and 2 days under aerobiosis) at 37°C. From the 2nd day, the following treatments were applied (1 × 60 s/day): Vochysia tucanorum (10 mg/mL); Myrcia bella (5 mg/mL); Matricaria chamomilla (80 mg/mL); Malva sylvestris, fluoride, and xylitol (Malvatricin Plus®); 0.12% chlorhexidine (CHX, PerioGard®); and PBS (negative control). The medium pH was measured. Quantitative polymerase chain reaction was performed for the detection of Streptococcus mutans and Lactobacillus spp. Enamel demineralization was measured by spectral-domain optical coherence tomography. The data were compared by means of the Kruskal-Wallis/Dunn, two-way ANOVA/Bonferroni, and ANOVA/Tukey tests (p < 0.05). The pH decreased after sucrose exposure; only CHX reestablished pH >5.5 by the last day. CHX also eliminated Lactobacillusspp., but the other treatments did not differ significantly from PBS. Malvatricin Plus® and CHX eliminated S. mutans, but the other treatments did not differ from PBS. Similar results were seen concerning the reduction of lesion depth and reflectivity. The experimental natural-extract solutions were ineffective against cariogenic bacteria and in preventing the development of enamel caries.
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Affiliation(s)
- Aline Silva Braga
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | | | - Luiz Leonardo Saldanha
- Department of Biological Sciences, School of Science, São Paulo State University (UNESP), Bauru, Brazil
| | - Anne Lígia Dokkedal
- Department of Biological Sciences, School of Science, São Paulo State University (UNESP), Bauru, Brazil
| | - Tobias Meissner
- Department of Cariology, Endodontology, and Periodontology, University of Leipzig, Leipzig, Germany
| | - Maximilian Bemmann
- Department of Cariology, Endodontology, and Periodontology, University of Leipzig, Leipzig, Germany
| | - Ellen Schulz-Kornas
- Department of Cariology, Endodontology, and Periodontology, University of Leipzig, Leipzig, Germany
| | - Rainer Haak
- Department of Cariology, Endodontology, and Periodontology, University of Leipzig, Leipzig, Germany
| | - Mohamed Mostafa Hefny Abdelbary
- Division of Oral Microbiology and Immunology, Department of Operative and Preventive Dentistry and Periodontology, RWTH Aachen University Hospital, Aachen, Germany
| | - Georg Conrads
- Division of Oral Microbiology and Immunology, Department of Operative and Preventive Dentistry and Periodontology, RWTH Aachen University Hospital, Aachen, Germany
| | - Ana Carolina Magalhães
- Department of Biological Sciences, Bauru School of Dentistry, University of São Paulo, Bauru, Brazil
| | - Marcella Esteves-Oliveira
- Department of Cariology, Endodontology, and Periodontology, University of Leipzig, Leipzig, Germany.,Department of Restorative, Preventive & Pediatric Dentistry, University of Bern, Bern, Switzerland
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9
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Spin-Neto R, Hauge Matzen L, Hermann L, Fuglsig JMDCES, Wenzel A. Head motion and perception of discomfort by young children during simulated CBCT examinations. Dentomaxillofac Radiol 2020; 50:20200445. [PMID: 33125282 DOI: 10.1259/dmfr.20200445] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVES To assess the frequency and characteristics (number, complexity, and distance) of head movements, and the perception of discomfort during simulated CBCT examinations in children, considering units with different patient positioning method and head immobilization device combinations. METHODS Forty children (20 boys/20 girls, age range 10-14 years) were video-recorded during simulated CBCT examinations. Children were randomly allocated to a sequence of five CBCT units: Newtom-5G, Orthophos-SL, Cranex-3Dx (patient standing/sitting), and X1. The child scored his/her discomfort perception (visual scale) and the preferred/ill-favored unit. Three observers scored the videos (20% in duplicate): child movement (yes/no), number (<3/≥3/continuous), complexity (uniplanar/multiplanar) and distance (<3 mm/≥3 mm). κ statistics provided intra-/interobserver reproducibility. Severe/extreme motion was defined based on movement characteristics. Chi-square tests assessed the frequency differences of severe/extreme motion among the units, age and operator. Logistic regression analyses with severe/extreme motion as outcome were performed. RESULTS The range of intra- and inter-observer reproducibility for movement observation was 0.78-0.89 and 0.61-0.64, respectively. Between 60% (Newtom-5G) and 100% (X1) of children moved during the examination. Severe/extreme motion was significantly related to unit and age. There was significantly less severe/extreme motion, when the child was in the supine position with a foam headrest as head support. The younger the child, the higher the risk for severe/extreme motion. The majority of the children preferred the unit with the supine position and a foam headrest. CONCLUSIONS The prevalence of severe and extreme motion was associated with the unit's patient positioning method and head immobilization devices combined, and child age.
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Affiliation(s)
- Rubens Spin-Neto
- Oral Radiology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Louise Hauge Matzen
- Oral Radiology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | - Louise Hermann
- Oral Radiology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
| | | | - Ann Wenzel
- Oral Radiology, Department of Dentistry and Oral Health, Aarhus University, Aarhus, Denmark
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10
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Cox TC. Microcomputed tomography of craniofacial mineralized tissue: A practical user's guide to study planning and generating quality data. Bone 2020; 137:115408. [PMID: 32407962 DOI: 10.1016/j.bone.2020.115408] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 05/03/2020] [Indexed: 11/26/2022]
Abstract
Whether in a clinical setting or a research environment using model organisms, X-ray-based computed tomography (CT) in its different forms represents the gold standard technology for the non-invasive imaging and quantification of mineralized tissues. While there are many excellent reviews on computed tomography in bone imaging, most focus on the appendicular skeleton. However, the craniofacial skeleton and mineralized dentition, which are frequently imaged for a variety of reasons, can require special considerations to ensure the best quality data are acquired and interpreted correctly. In this review, I will specifically focus on micro-computed tomography (microCT) related to the study of the craniofacial skeleton from the onset of cranioskeletal development through to adulthood using the mouse as the primary reference organism. In so doing, I will cover the important considerations when planning imaging studies, explain critical parameters of both scanning, reconstruction and 3D rendering of data that can impact quantification of different mineralized craniofacial tissues, and options for enabling accurate visualization of tomographic data.
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Affiliation(s)
- Timothy C Cox
- Departments of Oral & Craniofacial Sciences, School of Dentistry, and Pediatrics, School of Medicine, University of Missouri-Kansas City, Kansas City, MO 64108, USA.
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11
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Fontenele RC, Nejaim Y, Farias Gomes A, Gaêta-Araujo H, Haiter-Neto F, Freitas DQ. Does the addition of a lead foil to digital radiographic receptors influence image contrast and approximal caries lesions diagnosis? Dentomaxillofac Radiol 2020; 49:20190384. [DOI: 10.1259/dmfr.20190384] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Objectives: To access the influence of the addition of a lead foil to intraoral digital radiographic receptors on image contrast and approximal caries lesions diagnosis. Methods: 40 posterior teeth were distributed in silicone phantoms composed of two premolars, two molars and a non-test canine. Radiographic images of the phantoms were obtained with and without the incorporation of a lead foil, using the Digora Optime and Digora Toto systems. Four observers scored the images for the presence of caries lesions, using a 5-point scale. Images of an aluminum step wedge were acquired with and without the incorporation of a lead foil. Gray values and standard deviation of gray values were calculated in different thickness of the step wedge and, then, contrast variation was calculated. Results: Presence of a lead foil did not influence caries lesions diagnostic values, regardless of the type of digital system (p > 0.05). In general, the objective analysis was not influenced by the presence of a lead foil in any of the tested systems (p > 0.05). However, Digora Toto images showed greater gray values, lower standard deviation of gray values and lower contrast variation, regardless of the presence of the lead foil (p < 0.05). Conclusions: The addition of a lead foil to intraoral digital receptors did not influence image contrast nor caries lesions diagnosis.
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Affiliation(s)
| | - Yuri Nejaim
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil
| | - Amanda Farias Gomes
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil
| | - Hugo Gaêta-Araujo
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil
| | - Francisco Haiter-Neto
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil
| | - Deborah Queiroz Freitas
- Department of Oral Diagnosis, Piracicaba Dental School, State University of Campinas, Piracicaba, SP, Brazil
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