scholarly journals In vivo detection of external apical root resorption induced by apical periodontitis using periapical radiography and cone-beam computed tomography

2021 ◽  
Author(s):  
Stephanie Diaz Huamán ◽  
Maya Fernanda Manfrin Arnez ◽  
Fernanda Maria Machado Pereira Cabral de Oliveira ◽  
Andiara De Rossi ◽  
Léa Assed Bezerra Silva ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Predictive Value ◽  
Root Resorption ◽  
Calculated Data ◽  
Cone Beam ◽  
Predictive Values ◽  
Apical Root Resorption ◽  
External Apical Root Resorption ◽  
Sensitivity Specificity

Abstract Objectives: To investigate sensitivity, specificity, predictive values and accuracy of periapical radiography (PR) and Cone beam computed tomography (CBCT) for detection of external apical root resorption (EARR).Materials and Methods: Dog’s teeth with experimentally induced root resorption underwent or not root canal treatment (n = 62 roots). True positives (TP), false positives (FP), true negatives (TN) and false negatives (FN) in PR and CBCT diagnoses were determined using histopathologic findings as gold standard. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV) and diagnostic accuracy (TP + TN) in the diagnosis of EARR were calculated. Data was compared using chi-squared test (⍺= 0.05).Results: We found that PR detected EARR in 35% of roots and CBCT, in 47%. EARR was microscopically diagnosed in 50% (p = 0.03 comparison between PR and microscopy; p = 0.67 comparison between CBCT and microscopy). Overall, CBCT produced more accurate diagnoses than PR (0.93 for CBCT versus 0.70 for PR; p = 0.008). Interestingly, when data was stratified into small and large resorptions, PR and CBCT allowed identification of large resorption in 100% of the cases and showed the same accuracy. However, for small resorptions, PR showed an accuracy of 0.83, whereas CBCT showed an accuracy of 0.96 (p = 0.003).Conclusions: We demonstrated that CBCT showed higher accuracy to detect EARR. These findings shed light on the use of CBCT for detection of initial root resorption.Clinical relevance: Early identification of resorption allows a prompt treatment and reduces the risk of dental structure loss.

scholarly journals Cone beam computed tomography study of apical root resorption induced by Herbst appliance

2015 ◽  
Vol 23 (5) ◽  
pp. 479-485 ◽  
Author(s):  
João Paulo SCHWARTZ ◽  
Taísa Boamorte RAVELI ◽  
Kélei Cristina de Mathias ALMEIDA ◽  
Humberto Osvaldo SCHWARTZ-FILHO ◽  
Dirceu Barnabé RAVELI
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Resorption ◽  
Cone Beam ◽  
Herbst Appliance ◽  
Apical Root Resorption

scholarly journals Volumetric cone-beam computed tomography evaluation and risk factor analysis of external apical root resorption with clear aligner therapy

2021 ◽  
Author(s):  
Wei Liu ◽  
Juhua Shao ◽  
Shufang Li ◽  
Maher Al-balaa ◽  
Lulu Xia ◽  
...  
Keyword(s):  
Risk Factors ◽  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Resorption ◽  
Cone Beam ◽  
Volume Loss ◽  
Root Volume ◽  
Tooth Type ◽  
External Apical Root Resorption ◽  
Clear Aligner

ABSTRACT Objectives To investigate the prevalence and severity of external apical root resorption (EARR) volumetrically with clear aligner therapy using cone-beam computed tomography (CBCT) as well as determine the possible risk factors and develop a prediction model for EARR. Materials and Methods In this retrospective study, 320 incisors from 40 Class II patients treated with aligners (Invisalign) were included in this study. CBCT images were obtained at pretreatment (T0) and posttreatment (T1). Root volume was calculated by three-dimensional reconstruction of CBCT images, and apical tooth movement was measured from superimposed CBCT images. Changes in root volume were compared using paired t-tests, and the relationship between root volume loss and potential risk factors was analyzed by multiple linear regression. Results All of the measured incisors showed root volume loss, with an average of 11.48 ± 6.70 mm3, and the prevalence of severe resorption was 0.625%. The prediction model for EARR included variables of posttreatment sagittal root position (SRP), extraction, tooth type, and apical intrusion and extrusion displacements, with an R2 of 0.51. Age, sex, duration, pretreatment SRP, attachment, advancement, and retraction movements were excluded from the model. Conclusions Most incisors showed mild to moderate resorption during aligner treatment; only a minimal percentage showed severe resorption. Posttreatment SRP (which showed the highest association with EARR), extraction, tooth type, and apical intrusion and extrusion displacements were risk factors for EARR.

scholarly journals Cone-Beam Computed Tomography to Assess Mandibular Invasion in Oral Squamous Cell Carcinoma

2018 ◽  
Vol 8 (2) ◽  
pp. 18-22
Author(s):  
Md Ariful Islam ◽  
Md Nasir Uddin ◽  
Md Shahjahan Ali ◽  
Md Mahfuz Hossain
Keyword(s):  
Computed Tomography ◽  
Squamous Cell Carcinoma ◽  
Oral Squamous Cell Carcinoma ◽  
Positive Predictive Value ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Cone Beam Computed Tomography ◽  
Predictive Value ◽  
Cone Beam ◽  
Sensitivity Specificity

Background: Oral squamous cell carcinoma which occurs closely to the mandible has a tendency to invade mandible. An accurate preoperative evaluation of mandibular invasion is important for optimum treatment planning. Aim of this study is to determine the accuracy of CBCT in detection of mandibular invasion in oral squamous cell carcinoma. Study design: In this prospective observational study 35 patients of histologically proven squamous cell carcinoma which was close proximity to the mandible were selected. The results of preoperative CBCT scan of mandible were compared with that of post operative histopathology of bone and thus sensitivity, specificity, negative predictive value, positive predictive value were calculated. Results: Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV) and accuracy of CBCT were 96%, 90.90%, 96%, 90.90%, 97.14% respectively (Chi squared with Yates correction equals 21.844 with 1 degrees of freedom, p value < o.oooo1). Conclusion: Cone beam computed tomography is a sensitive test and has an acceptable range of specificity. Update Dent. Coll. j: 2018; 8 (2): 18-22

scholarly journals Apical root resorption due to orthodontic treatment detected by cone beam computed tomography

2012 ◽  
Vol 83 (2) ◽  
pp. 196-203 ◽  
Author(s):  
Iury O. Castro ◽  
Ana H. G. Alencar ◽  
José Valladares-Neto ◽  
Carlos Estrela
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Orthodontic Treatment ◽  
Root Resorption ◽  
Three Dimensional ◽  
Cone Beam ◽  
Apical Root Resorption ◽  
Gender And Age ◽  
Before And After

ABSTRACT Objective: To determine the frequency of apical root resorption (ARR) due to orthodontic treatment using cone beam computed tomography (CBCT) in a sample of 1256 roots from 30 patients. Materials and Methods: All patients had Class I malocclusion with crowding. Of the 30 patients evaluated, 11 were boys and 19 were girls; their mean age was 13 years (11 to 16 years). Orthodontic treatment followed the nonextraction treatment. CBCT images were obtained before and after orthodontic treatment, and ARR was determined using Axial Guided Navigation of CBCT images. Results: All patients had ARR. No statistically significant association was found between resorption frequency, gender, and age. ARR was detected using CBCT in 46% of all roots that underwent orthodontic treatment. Conclusions: CBCT was effective for detecting in vivo even minimal degrees of ARR due to orthodontic treatment and allowed three-dimensional evaluation of dental roots and visualization of palatine roots of maxillary molars. The highest frequencies and the most significant ARR occurred in incisors and distal roots of first maxillary and mandibular molars.

scholarly journals Long-term evaluation of apical root resorption after orthodontic treatment using periapical radiography and cone beam computed tomography

2013 ◽  
Vol 18 (4) ◽  
pp. 104-112 ◽  
Author(s):  
Jairo Curado de Freitas ◽  
Olavo César Porto Lyra ◽  
Ana Helena Gonçalves de Alencar ◽  
Carlos Estrela
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Orthodontic Treatment ◽  
Root Resorption ◽  
Cone Beam ◽  
Posterior Teeth ◽  
Apical Root Resorption ◽  
Mandibular Molar ◽  
Periapical Radiography

OBJECTIVE: To evaluate the frequency of Apical Root Resorption (ARR) after orthodontic treatment at 52-288 months using periapical radiography (PR) and cone beam computed tomography (CBCT). METHODS: Radiographic images obtained from 58 patients, before (T1) and after orthodontic treatment (T2), and following 52-288 months of treatment were analyzed by three members of the Brazilian Board of Orthodontics. Apical structures were evaluated by PR images (T2 and T3), using Levander and Malmgren scores. The presence of ARR on CBCT images were detected only at T3. The Kolmogorov-Smirnov test was used for statistical analyses, and the level of significance was set at 5%. Kappa statistics determined interobserver agreement. RESULTS: The more frequent ARR were with scores 1 in T2 (51.6%) and T3 (53.1%), when evaluated by PR (p > 0.05). When compared the frequencies of ARR in T3 among PR and CBCT images, the differences were significant for maxillary and mandibular pre-molar groups, and for mandibular molar group (p > 0.05). The teeth with highest frequency of ARR presence using CBCT images were maxillary lateral incisors (94.5%) and mandibular central incisors (87.7%), while the premolars showed the lowest frequency. The CBCT images showed that the teeth involved in orthodontic treatment with extraction present higher ARR frequency (p < 0.05). CONCLUSION: PR showed more frequency of ARR in posterior teeth groups when compared with CBCT images. ARR did not change in long-term post treatment.

scholarly journals Comparison of Cone Beam Computed Tomography and Digital Radiography in Detecting Separated Endodontic Files and Strip Perforation

2020 ◽  
Vol 10 (23) ◽  
pp. 8726
Author(s):  
Mehrdad Abdinian ◽  
Saba Moshkforoush ◽  
Hamidreza Hemati ◽  
Parisa Soltani ◽  
Mansoure Moshkforoushan ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Digital Radiography ◽  
Cone Beam Computed Tomography ◽  
Predictive Value ◽  
Intraoperative Complications ◽  
Cone Beam ◽  
Control Group ◽  
Root Canals ◽  
Diagnostic Potential ◽  
Sensitivity Specificity

The separation of endodontic files and strip perforation are among procedural intraoperative complications which may ultimately lead to the failure of root canal treatment. The aim of the present study was to compare the diagnostic potential of cone beam computed tomography (CBCT) and digital periapical radiographs in detecting separated rotary files and strip perforation in filled canals. Fifty human mandibular molars were selected for this study. The teeth were randomly divided into two groups based on endodontic errors (i.e., file separation and strip perforation). In each group, 25 of 50 mesial canals were randomly chosen for simulating the errors, while the other 25 canals were considered as the control group. In group one, a simulation of the separation of rotary files was performed using ProTaper F2 files. Strip perforation of the root canals in group two was achieved by number 2 and 3 Gates Glidden drills in the coronal third of the root canals. Digital periapical radiographs in two different horizontal angles and high-resolution CBCT scans were obtained from the teeth mounted on a dry human mandible with simulated soft tissue covering. Three experienced observers who were unaware of the study groups evaluated the digital periapical and CBCT image sets in two separate readings. Intraobserver and interobserver agreements, as well as accuracy, sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV), were calculated and compared. Intraobserver and interobserver agreements ranged from poor to excellent and poor to good, respectively. The accuracy, sensitivity, specificity, PPV, and NPV for digital radiography in detecting separated files were 0.950, 0.813, 0.957, 0.929, and 0.880, respectively. The same values for CBCT were 0.747, 0.667, 0.900, 0.833, and 0.783, respectively. For the diagnosis of strip perforation, these values were 0.855, 0.800, 0.909, 0.889, and 0.833 for periapical radiography and 0.955, 1.000, 0.920, 0.926, and 1.000 for CBCT. In conclusion, CBCT was superior for diagnosing strip perforation of the filled root canals, while digital periapical radiographs performed better in the detection of separated rotary files.

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