scholarly journals Cone beam computed tomography devices in the evaluation of buccal bone in anterior teeth

2019 ◽  
Vol 64 (2) ◽  
pp. 161-166
Author(s):  
LL Dantas ◽  
PP Ferreira ◽  
LSAF Oliveira ◽  
FS Neves ◽  
PSF Campos ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Anterior Teeth

scholarly journals Cone Beam Computed Tomography-based Evaluation of the Anterior Teeth Position Changes obtained by Passive Self-ligating Brackets

2016 ◽  
Vol 17 (8) ◽  
pp. 623-629 ◽  
Author(s):  
Ana CCF Conti ◽  
Fernando K Rhoden ◽  
Liliana Á Maltagliati ◽  
Renata R Almeida-Pedrin ◽  
Leopoldino C Filho ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Steel Wire ◽  
Cone Beam ◽  
Orthodontic Appliances ◽  
Average Increase ◽  
Anterior Teeth ◽  
Transverse Distance ◽  
Dental Crowding ◽  
Dental Casts

ABSTRACT Aim The objective of this study was to evaluate the anterior teeth position changes obtained by passive self-ligating brackets using cone beam computed tomography (CBCT). Materials and methods Twenty patients with a mean age of 16.5 years, class I malocclusion, constricted maxillary arch, and teeth crowding above 5 mm were enrolled in this study, and treated by passive orthodontic self-ligating brackets. A sequence of stainless steel thermoset wire was implemented with ending wire of 0.019” × 0.025”. The CBCT and dental casts were obtained prior to the installation of orthodontic appliances (T1), and 30 days after rectangular steel wire 0.019” × 0.025” installation (T2). The measurements in CBCT were performed with the Anatomage software, and the dental casts were evaluated with a digital caliper rule with an accuracy of 0.01 mm. Results The CBCT data demonstrated mean buccal inclination of the upper and lower central incisors ranging from 6.55° to 7.24° respectively. The upper and lower lateral incisors ranged from 4.90° to 8.72° respectively. The lower canines showed an average increase of 3.88° in the buccal inclination and 1.96 mm in the transverse intercuspal distance. The upper canines showed a negative inclination with mean average of −0.36°, and an average increase of 0.82 mm in the transverse distance, with negative correlation with the initial crowding. Conclusion Treatment with passive self-ligating brackets without obtaining spaces increases buccal inclination of the upper and lower incisors with no correlation with the amount of initial teeth crowding. The intercanine distance tends to a small increase showing different inclinations between the arches. Clinical significance When taking into account the selfligating brackets, the amount of initial dental crowding is not a limitation factor that could increase the buccal inclination of the anterior teeth. How to cite this article Rhoden FK, Maltagliati LÁ, de Castro Ferreira Conti AC, Almeida-Pedrin RR, Filho LC, de Almeida Cardoso M. Cone Beam Computed Tomography-based Evaluation of the Anterior Teeth Position Changes obtained by Passive Selfligating Brackets. J Contemp Dent Pract 2016;17(8):623-629.

scholarly journals A cone-beam computed tomography study of the root canal morphology of anterior teeth in a Turkish population

2014 ◽  
Vol 08 (03) ◽  
pp. 302-306 ◽  
Author(s):  
Mustafa Altunsoy ◽  
Evren Ok ◽  
Bilge Gulsum Nur ◽  
Osman Sami Aglarci ◽  
Enes Gungor ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Canal ◽  
Turkish Population ◽  
Cone Beam ◽  
Chi Square ◽  
Anterior Teeth ◽  
Population Type ◽  
Canal Morphology

ABSTRACT Objective: The aim of this study was to determine the root and canal morphology of the maxillary and mandibular anterior teeth in a Turkish population by analyzing cone-beam computed tomography (CBCT) images. Materials and Methods: CBCT images of 417 females and 410 males with a mean age of ranging from 14 to 70 years were examined in this study. A total of 1453 maxillary central incisors, 1504 maxillary lateral incisors, 1523 maxillary canines, 1582 mandibular central incisors, 1603 mandibular lateral incisors, and 1604 mandibular canines were analyzed. The number of root canals and the canal configurations were investigated and then were classified according to Vertucci's classification. The data were analyzed with the Pearson Chi-square test. Results: The Type 1 canal configuration was most prevalent in the maxillary anterior teeth (96.8-99.7%). The Types 2, 3, 4, and 5 canal configurations were observed within the range of 0-1.3%, 0-0.8%, 0-0.7%, and 0-1.8%, respectively. In the mandibular anterior teeth, the Type 1 canal configuration was most prevalent (77-95%). The Types 2, 3, 4, and 5 canal configurations were observed within a range of 0.2-2.7%, 0.2-1.6%, 0.9-5.9%, and 1.8-14.4%, respectively. The prevalence of two canals was higher in males than in females both in the maxillary and mandibular anterior teeth (P < 0.05). Conclusions: Type 1 was the most prevalent canal configuration of maxillary and mandibular anterior teeth in the Turkish population. Type 5 was the most frequently observed canal configuration of the two canalled teeth. The incidence of root canal numbers and configurations differed with sex.

scholarly journals Cone Beam Computed Tomography Evaluation of the Diagnosis, Treatment Planning, and Long-Term Followup of Large Periapical Lesions Treated by Endodontic Surgery: Two Case Reports

2013 ◽  
Vol 2013 ◽  
pp. 1-12
Author(s):  
Vijay Shekhar ◽  
K. Shashikala
Keyword(s):  
Computed Tomography ◽  
Case Report ◽  
Treatment Planning ◽  
Cone Beam Computed Tomography ◽  
Cone Beam ◽  
Histopathological Diagnosis ◽  
Periapical Lesions ◽  
Endodontic Surgery ◽  
Anterior Teeth

The aim of this case report is to present two cases where cone beam computed tomography (CBCT) was used for the diagnosis, treatment planning, and followup of large periapical lesions in relation to maxillary anterior teeth treated by endodontic surgery. Periapical disease may be detected sooner using CBCT, and their true size, extent, nature, and position can be assessed. It allows clinician to select the most relevant views of the area of interest resulting in improved detection of periapical lesions. CBCT scan may provide a better, more accurate, and faster method to differentially diagnose a solid (granuloma) from a fluid-filled lesion or cavity (cyst). In the present case report, endodontic treatment was performed for both the cases followed by endodontic surgery. Biopsy was done to establish the confirmatory histopathological diagnosis of the periapical lesions. Long-term assessment of the periapical healing following surgery was done in all the three dimensions using CBCT and was found to be more accurate than IOPA radiography. It was concluded that CBCT was a useful modality in making the diagnosis and treatment plan and assessing the outcome of endodontic surgery for large periapical lesions.

Three-dimensional analysis of deciduous maxillary anterior teeth using cone-beam computed tomography

2011 ◽  
Vol 25 (2) ◽  
pp. 182-188 ◽  
Author(s):  
M.-S. Jung ◽  
S.-P. Lee ◽  
G.-T. Kim ◽  
S.-C. Choi ◽  
J.-H. Park ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Dimensional Analysis ◽  
Cone Beam Computed Tomography ◽  
Three Dimensional ◽  
Cone Beam ◽  
Anterior Teeth

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 Evaluation of Apical Root Morphology of Maxillary Incisors using Cone Beam Computed Tomography in Brazilian Subpopulation: A Cross-sectional Study

2021 ◽  
Author(s):  
Cristiane Martins Rodrigues Bernardes ◽  
Luiz Eduardo Gregoris Rabelo ◽  
Cyntia Rodrigues DE Araújo Estrela ◽  
Orlando Aguirre Guedes ◽  
Brunno Santos DE Freitas Silva ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Morphology ◽  
Cross Sectional Study ◽  
Cone Beam ◽  
P Value ◽  
Sectional Study ◽  
Cross Sectional ◽  
Anterior Teeth ◽  
Maxillary Incisors

Introduction: The prevalence of Apical Root Resorption (ARR) after orthodontic treatment is high. It is associated with several factors, such as tooth group, type and duration of treatment, applied force and root morphology. Aim: To evaluate the apical root morphology of maxillary incisors in a Brazilian subpopulation using Cone Beam Computed Tomography (CBCT) images. Materials and Methods: In this retrospective and cross-sectional study, 400 maxillary incisors from 167 patients registered in the data base of Dental Radiology Clinics between January 2012 and April 2017 were analysed. The apical root configuration was verified by navigating 0.1 mm/0.1 mm, in the three planes, axial, coronal, and sagittal sections on CBCT images, from the root canal entrance to the apical foramen, as well as from the apical direction to the crown. The standard reference for apical root form corresponded to the long axis of the tooth. The root forms and their frequency were characterised according to the classification proposed by Levander and Malmgren (1988). The qualitative variables were analysed by the Chi-square test. The level of significance was p-value <0.05. Results: A total of 400 maxillary anterior teeth (central and lateral incisors; n=200 each) from 167 patients (101 women; mean age was 41.8±16.20 years) were analysed. The most common apical root form presented in the central incisors was the blunt root {99 (49.5%)}, followed by pipette-shaped root {69 (34.5%)}. The less frequent was the short root {13 (6.5%)} (p-value <0.001). In the lateral incisors, the highest frequency presented was lacerated root {111 (55.5%)}, followed by blunt root {47 (23.5%)}, and pipette- shaped root {37 (18.5%)} (p-value <0.001). Conclusion: Maxillary central incisors had a higher frequency of rhomboid (blunt) root morphology, while lateral incisors had a higher frequency of curved (lacerated) root form.

scholarly journals How well do integrated 3D models predict alveolar defects after treatment with clear aligners?

2021 ◽  
Author(s):  
Ting Jiang ◽  
Jian Kai Wang ◽  
Yang Yang Jiang ◽  
Zheng Hu ◽  
Guo Hua Tang
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Alveolar Bone ◽  
Pearson Correlation ◽  
Cone Beam ◽  
Molar Distalization ◽  
Predictive Values ◽  
Anterior Teeth ◽  
Mean Differences ◽  
Mandibular Incisors

ABSTRACT Objectives To evaluate the accuracy of integrated models (IMs) constructed by pretreatment cone-beam computed tomography (pre-CBCT) in diagnosing alveolar defects after treatment with clear aligners. Materials and Methods Pre-CBCT and posttreatment cone-beam computed tomography (CBCT) scans from 69 patients who completed nonextraction treatment with clear aligners were collected. The IMs comprised anterior teeth in predicted positions and alveolar bone from pre-CBCT scans. The accuracy of the IMs for identifying dehiscences or fenestrations was evaluated by comparing the means of the defect volumes, absolute mean differences, and Pearson correlation coefficients with those measured from post-CBCT scans. Defect prediction accuracy was assessed by sensitivity, specificity, positive predictive values, and negative predictive values. Factors possibly affecting changes in mandibular alveolar defects were analyzed using a mixed linear model. Results The IM measurements showed mean deviations of 2.82 ± 9.99 mm3 for fenestrations and 3.67 ± 9.93 mm3 for dehiscences. The absolute mean differences were 4.50 ± 9.35 mm3 for fenestrations and 5.17 ± 9.24 mm3 for dehiscences. The specificities of the IMs were higher than 0.8, whereas the sensitivities were both lower (fenestration = 0.41; dehiscence = 0.53). The positive predictive values were unacceptable (fenestration = 0.52; dehiscence = 0.62), and the overall reliability was low (&lt;0.80). Molar distalization and proclination were positively correlated with significant increases in alveolar defects at the mandibular incisors after treatment. Conclusions Alveolar defects after clear aligner treatment cannot be simulated accurately by IMs constructed from pre-CBCT. Caution should be taken in the treatment of crowding with proclination and molar distalization for the safety of alveolar bone at the mandibular incisors.

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