scholarly journals Reliability and reproducibility of the method of assessment of midpalatal suture maturation: A tomographic study

2018 ◽  
Vol 89 (1) ◽  
pp. 71-77 ◽  
Author(s):  
Natália Maria Vieira Barbosa ◽  
Ana Cláudia de Castro ◽  
Ferreira Conti ◽  
Leopoldino Capelozza-Filho ◽  
Renata Rodrigues de Almeida-Pedrin ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam ◽  
Agreement Rate ◽  
Perfect Agreement ◽  
Midpalatal Suture ◽  
Significance Level ◽  
Individual Assessment ◽  
The Individual ◽  
Method Of Assessment ◽  
Examiner Agreement

ABSTRACT Objectives: To assess reliability and reproducibility of the individual assessment of midpalatal suture maturation in computed tomography among orthodontists and radiologists for potential diagnosis application. Materials and Methods: Sixty axial slices from cone-beam computed tomography and multi-slice CT scans of patients aged between 11 and 21 years old (33 females and 27 males) were selected. For the investigation of reliability and reproducibility of the method, two groups of examiners were established. The first group consisted of 11 orthodontists and the second consisted of 10 radiologists. Each group examined the images and performed individual assessment of the midpalatal suture maturation method twice within an interval of 21 days. During the first and second analyses, the sequence of images was randomized to reduce potential bias. Weighted Cohen's kappa was performed to assess inter- and intra-examiners' agreement. The percentage of perfect agreement and the number of stages apart for each disagreement were calculated. The significance level was P < .05. Results: The overall inter-examiner agreement was satisfactory in the first (kappaw: 0.37) and the second (kappaw: 0.34) analyses. Intra-examiner agreement outcomes were similar between orthodontists (kappaw: 0.44) and radiologists (kappaw: 0.41). The percentage of perfect agreement was 43.2%. Conclusions: The method for individual assessment of midpalatal suture maturation revealed potential reliability and reproducibility. However, the agreement rate observed in the present study was not high enough for a method designed for routine clinical applications.

scholarly journals Comparison of the Hounsfield Unit Values Obtained From Cone-Beam Computed Tomography (CBCT) and Multidetector Computed Tomography (MDCT) Images for Different Bone Densities

2021 ◽  
Vol 7 (2) ◽  
Author(s):  
Atefeh Khavid ◽  
Mojgan Sametzadeh ◽  
Mostafa Godiny ◽  
Mohammad Mehdi Moarrefpour
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Pearson Correlation ◽  
Hounsfield Unit ◽  
Cone Beam ◽  
Ct Scanner ◽  
Significance Level ◽  
Dental Practitioners ◽  
Significant Difference ◽  
The Mean

Background and objective: In recent years, cone-beam computed tomography (CBCT) has become a key diagnostic tool in dentistry. CBCT can provide 3D images of the maxillofacial area to help dental practitioners in diagnosis and treatment, especially implant placement and treatment of pathogenic lesions. This study aimed to compare the Hounsfield Unit (HU) values obtained from CBCT images for bones of different densities with the corresponding HU values from MDCT images. Materials and methods: cube-shaped bone blocks of identical size were cut from the middle section of the cow ribs and femur area such that they had a layer of cortical bone in their buccal, lingual, and top surfaces and trabecular bone in the middle. MDCT scans were performed using a Somatom Sensation Ct Scanner. After determining HU from the results of these scans, nine suitable specimens from different ranges of HU were chosen for comparison. HU of the CBCT images was computed by the dedicated software of the CBCT machine. Finally, HU values obtained from MDCT and CBCT were compared. Data analysis was performed using SPSS version 25 at the 0.05 significance level. Results: The results showed a statistically significant difference between the mean HU from MDCT images and the mean HU from CBCT images (P<0.05). For similar specimens, CBCT produced higher mean HU values than MDCT. The Pearson correlation test detected a significant direct relationship between the HU values of specimens in MDCT and CBCT (P<0.05). Conclusion: For the tools and software used in this study, there was no significant difference between the HU values obtained from MDCT and CBCT, but the mean HU obtained from CBCT was higher than that from MDCT.

scholarly journals Midpalatal suture maturation stage assessment in adolescents and young adults using cone-beam computed tomography

2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Ludy Marileidy Jimenez-Valdivia ◽  
Violeta Malpartida-Carrillo ◽  
Yalil Augusto Rodríguez-Cárdenas ◽  
Heraldo Luis Dias-Da Silveira ◽  
Luis Ernesto Arriola-Guillén
Keyword(s):  
Computed Tomography ◽  
Young Adults ◽  
Cone Beam Computed Tomography ◽  
Adolescents And Young Adults ◽  
Cone Beam ◽  
Maturation Stage ◽  
Maxillary Expansion ◽  
Cross Sectional ◽  
Midpalatal Suture ◽  
Maturation Stages

Abstract Background The aim of this study was to evaluate the midpalatal suture maturation stages in adolescents and young adults using cone-beam computed tomography (CBCT). Methods The sample comprised 200 CBCT scans of individuals aged 10 to 25 years old (95 males and 105 females) divided into three groups, adolescents (n = 48), post-adolescents (n = 52), and young adults (n = 100). The Planmeca ProMax 3D software was used for the midpalatal suture maturation stage evaluation according to Angieleri’s method, using cross-sectional axial slice. Two previously calibrated examiners analyzed the images and classified according to five different maturation stages. A, B, and C stages were considered with open midpalatal suture, and D and E were considered without open midpalatal suture. Association tests were performed using chi-square test also, and a binary logistic regression was evaluated (P < 0.05). Results The possibility to find open midpalatal suture in individuals of 10 to 15 years old was 70.8%, in subject aged 16 to 20 and 21 to 25 years old was 21.2% and 17%, respectively. Furthermore, this possibility in individuals older than 16 years was greater in males than in females. Conclusions The possibility to find open midpalatal suture in post-adolescents and young adults is greater than the orthodontists considered years ago. Furthermore, men are more likely to find midpalatal suture opening. These implications might be considered by the orthodontists when maxillary expansion is required. Besides, the ossification of the middle palatal suture is very variable, and therefore, the use of CBCT might be recommended to clarify this possibility.

scholarly journals Cone beam computed tomography evaluation of midpalatal suture maturation in adults

2017 ◽  
Vol 46 (12) ◽  
pp. 1557-1561 ◽  
Author(s):  
F. Angelieri ◽  
L. Franchi ◽  
L.H.S. Cevidanes ◽  
J.R. Gonçalves ◽  
M. Nieri ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Midpalatal Suture

scholarly journals Influence of intracanal post on apical periodontitis identified by cone-beam computed tomography

2009 ◽  
Vol 20 (5) ◽  
pp. 370-375 ◽  
Author(s):  
Carlos Estrela ◽  
Mike Reis Bueno ◽  
Olavo César Lyra Porto ◽  
Cleomar Donizeth Rodrigues ◽  
Jesus Djalma Pécora
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Apical Periodontitis ◽  
Cone Beam ◽  
Chi Square ◽  
Significance Level ◽  
Anterior Teeth ◽  
Kappa Value ◽  
Chi Square Test ◽  
Periapical Radiography

The determination of the success of endodontic treatment has been often discussed based on outcome obtained by periapical radiography. The aim of this study was to verify the influence of intracanal post on apical periodontitis detected by cone-beam computed tomography (CBCT). A consecutive sample of 1020 images (periapical radiographs and CBCT scans) taken from 619 patients (245 men; mean age, 50.1 years) between February 2008 and September 2009 were used in this study. Presence and intracanal post length (short, medium and long) were associated with apical periodontitis (AP). Chi-square test was used for statistical analyses. Significance level was set at p<0.01. The kappa value was used to assess examiner variability. From a total of 591 intracanal posts, AP was observed in 15.06%, 18.78% and 7.95% using periapical radiographs, into the different lengths, short, medium and long, respectively (p=0.466). Considering the same posts length it was verified AP in 24.20%, 26.40% and 11.84% observed by CBCT scans, respectively (p=0.154). From a total of 1,020 teeth used in this study, AP was detected in 397 (38.92%) by periapical radiography and in 614 (60.19%) by CBCT scans (p<0.001). The distribution of intracanal posts in different dental groups showed higher prevalence in maxillary anterior teeth (54.79%). Intracanal posts lengths did not influenced AP. AP was detected more frequently when CBCT method was used.

scholarly journals C-Shaped Canal System in Mandibular Second Molars Evaluated by Cone-Beam Computed Tomography in an Argentinean Subpopulation

2019 ◽  
pp. 17-23
Author(s):  
Chaintiou Piorno Romina ◽  
Consoli Lizzi Eugenia Pilar ◽  
Saiegh Jonathan ◽  
Vázquez Diego Jorge ◽  
Gualtieri Ariel Félix ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Canal System ◽  
Chi Square ◽  
Significance Level ◽  
Chi Square Test ◽  
Score Method ◽  
Radiographic Classification

Introduction:To evaluate cone-beam computed tomography (CBCT) images in order to determine the presence of mandibular second molars with C-shaped canal system and classify them.Methods:3035 CBCT images fulfilling the selection criteria were observed. Once established the presence of C-shaped canal system, they were classified according to the anatomic and radiographic classification of Fan et al. Data description was made by frequencies and percentages rates, with a 95% confidence interval (IC95) according to score method. Comparisons were assessed by means of the Chi-square test with a significance level equal to 5%.Results:Of the 225 selected patients, 44 exhibited C-shaped canals (20%; IC95: 15% to 25%). 70% (IC95: 56% to 82%) of patients showed a bilateral C-shaped canal system pattern. Regarding to the axial plane -anatomic classification-, there was a significant association between the root third and the configuration (Chi-square=76.89; p<0.05): at the coronal third prevailed the C1 configuration (47%; IC95: 36% to 58%); at the middle third prevailed the C3d configuration (39%; IC95: 28% to 50%) and at the apical third, the C4 configuration (35%; IC95: 25% to 46%).

scholarly journals Prevalence and Configuration of C-shaped Canals in Lower Molars from a Chilean Subpopulation

2021 ◽  
Vol 24 (4) ◽  
Author(s):  
Fernando Peña Bengoa ◽  
Carlos Ibañez ◽  
Paula Ericles ◽  
Patricio Meléndez ◽  
Carolina Cáceres
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Dental Pulp ◽  
Demographic Characteristics ◽  
High Rate ◽  
Cone Beam ◽  
Significance Level ◽  
Dental Pulp Cavity ◽  
Cone Beam Tomography

Objective: To determine the prevalence of C-shaped canals in lower molars (first and second molars) in a Chilean subpopulation, and to identify root configuration and demographic characteristics using cone beam tomography. Materials and method: 912 molars (456 first and 456 second molars) resulting from the analysis of 228 mandibular CBCT scans (89 men and 139 women between 15 and 80 years old) were evaluated. Through panoramic reconstruction and axial tomographic sections, the root configuration was established, and the presence and type of C-shaped canal were classified, analyzing 5 levels along the root canal. Data were statistically analyzed with a 5% significance level. Results: Of the 912 molars analyzed, 69 were classified as C-shaped (7.57%), constituting 65.72% of those molars that presented fused roots. 100% of this configuration of canals was observed in lower second molars, presenting a higher prevalence in women (n = 49, 71.01%). 40.82% of the cases that presented a C-shaped configuration manifested bilaterally. The most frequent C-shaped canal configuration was C3 (n = 347, 66.10%), according to Melton's classification. Conclusion: The C-shaped canals in the studied population were observed entirely in lower second molars, showing a clear predilection for the female sex and a high rate of bilaterality.   Keywords  Anatomy; Cone beam computed tomography; Dental pulp cavity; Endodontics.

scholarly journals Genotoxicity and cytotoxicity of cone beam computed tomography in children

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Doua H. Altoukhi ◽  
Sumer Alaki ◽  
Eman El Ashiry ◽  
Osama Nassif ◽  
Dania Sabbahi
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Buccal Mucosa ◽  
Condensed Chromatin ◽  
Cone Beam ◽  
Rank Test ◽  
Healthy Children ◽  
Significance Level ◽  
Signed Rank ◽  
Signed Rank Test

Abstract Background Dental radiographs are essential tools for diagnosis. However, there are significant concerns about the dangerous effect of radiation especially on children. The aim of this study was to evaluate genotoxicity and cytotoxicity in the exfoliated cells of buccal mucosa of children subjected to Cone Beam Computed Tomography (CBCT). Methods The study included 18 healthy children aged (9–12 years) who were exposed to CBCT. All CBCT scans were performed with the i-CAT CBCT. Exfoliated buccal cells were scraped from the left and right cheek immediately before the exposure, after 10 ± 2 days, and after 1 month. Cells were stained using Feulgen/fast green stain and examined under light microscopy. Genotoxicity (Micronuclei) and cytotoxicity (condensed chromatin, karyorrhexis, pyknosis, and karyolysis) were scored. Statistical analysis was performed using the McNemar test, Wilcoxon Signed-Rank test, and Mann-Whitney U test at a significance level of p < 0.05. Results There were statistically significant differences in the mean percentages of micronuclei, condensed chromatin, karyorrhexis, pyknosis, and karyolysis before and 10 ± 2 days after the CBCT scan (p < 0.05). There were no statistically significant differences in the frequency of micronuclei, condensed chromatin, karyorrhexis, or pyknosis before and 1 month after the exposure (p > 0.05) except for karyolysis (p < 0.05). Conclusions CBCT may induce genotoxicity and cytotoxicity in buccal mucosa cells of children. Therefore, CBCT should not be prescribed unless necessary as it cannot be considered a risk-free procedure.

scholarly journals Role of Cone-Beam Computed Tomography in the Management of Periodontal Disease

2019 ◽  
Vol 7 (2) ◽  
pp. 57 ◽  
Author(s):  
V. Thomas Eshraghi ◽  
Kyle A. Malloy ◽  
Mehrnaz Tahmasbi
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Periodontal Diseases ◽  
Standard Of Care ◽  
Cone Beam ◽  
Additional Information ◽  
Technological Advances ◽  
Furcation Defects ◽  
The Individual

The goal of this paper was to review the current literature surrounding the use of cone beam computed tomography (CBCT) related to the diagnosis, prognostic determination, and treatment of periodontal diseases. A literature review was completed to identify peer-reviewed articles related to CBCT and periodontics. The results were filtered to pool only articles specific to CBCT and periodontal diagnosis, prognosis, and treatment/outcomes. The articles were reviewed and findings summarized. Author’s commentary on technological advances and additional potential uses of CBCT in the field of periodontics were included. There is evidence to suggest that CBCT imaging can be more accurate in diagnosing specific periodontal defects (intrabony and furcation defects), and therefore be helpful in the prognostic determination and treatment planning. However, at this time, CBCT cannot be recommended as the standard of care. It is up to the individual clinician to use one’s own judgment as to when the additional information provided by CBCT may be beneficial, while applying the As Low As Reasonably Achievable (ALARA) principle. With continued technological advances in CBCT imaging (higher resolution, reduced imaging artifacts, lower exposure, etc.) the author’s believe that CBCT usage will become more prominent in diagnosis and treatment of periodontal diseases.

Comparison of rotary NiTi reciprocating file systems using Cone Beam CT in root canal transportation

2021 ◽  
Vol 15 (6) ◽  
pp. 1206-1209
Author(s):  
N. Zahid ◽  
S. A. Khan ◽  
A. Saqib ◽  
A. Tariq
Keyword(s):  
Computed Tomography ◽  
Root Canal ◽  
Cone Beam Ct ◽  
File Systems ◽  
Cone Beam ◽  
Niti Wire ◽  
Significance Level ◽  
Single File ◽  
Canal Transportation ◽  
Tomography Method

Aim: T assess the root canal transportation caused by these rotary NiTi reciprocating file systems using 3D cone beam computed tomography Method: This experimental study was conducted on 60 samples of rotary NiTi reciprocating file systems using CBCT. The extent of canal transportation and the centering ratio was analyzed using independent sample t test. The significance level was set at 95%. Results: Mean apical canal transportation was lower in wave one Gold groups as compare to Reciproc (0.8724±0.04SD vs 0.9463±0.02SD, p=0.000). Mean apical canal transportation at 5 mm was lower in wave one gold group as compare to reciproc blue group (0.5610±0.02SD vs 0.7253±0.06SD, p=0.000). Mean apical canal transportation at 8mm was lower in wave one group as compare to reciproc blue (0.358±0.03SD vs 0.5766±0.10SD, p=0.000). Conclusion: Wave one Gold had high centering ability and lower canal transportation as compare to Reciproc Blue single file system. CBCT is an efficient method of understanding Canal transportation Keywords: CBCT, NiTi wire, Root canal transportation, Reciproc blue

scholarly journals Relationship between maxillary canine intra-alveolar position and maxillary incisor angulation: a cone beam computed tomography study

2011 ◽  
Vol 22 (2) ◽  
pp. 146-150 ◽  
Author(s):  
Carolina Baratieri ◽  
Ana Carolina Portes Canongia ◽  
Ana Maria Bolognese
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Sagittal Plane ◽  
Mixed Dentition ◽  
Cone Beam ◽  
Maxillary Incisor ◽  
Maxillary Canine ◽  
Significance Level ◽  
Maxillary Incisors ◽  
The Right

The aims of the present study were to evaluate the angulation and inclination of permanent maxillary incisors and to correlate the results to the intra-alveolar permanent maxillary canine position during mixed dentition, using cone beam computed tomography (CBCT). The subjects were 30 children aged 7 to 10 years in the inter-transitory period of mixed dentition (permanent incisors and first molars erupted; primary canines, first and second molars erupted; and permanent canines intraosseous). The CBCT scans were obtained and, using the Dolphin Imaging® software - version 11.0, 3D images were reconstructed and the measurements were performed. The angulation of the right and left lateral and central maxillary incisors was measured in relation to the sagittal plane and their inclination was measured in relation to the coronal plane. The intra-alveolar height of the right and left maxillary canines was measured from the cusp tip to the axial plane. Pearson's correlation at 5% significance level showed positive correlation between the canine height and the lateral incisor angulation. It was concluded that the intra-alveolar position of the maxillary canines has a direct influence on the angulation of maxillary incisors, especially the lateral incisors.

Sign in / Sign up

Export Citation Format

Share Document