Three-dimensional assessment of impacted canines and root resorption using cone beam computed tomography

2012 ◽  
Vol 113 (2) ◽  
pp. 260-267 ◽  
Author(s):  
Snehlata Oberoi ◽  
Stephanie Knueppel
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Resorption ◽  
Three Dimensional ◽  
Cone Beam ◽  
Impacted Canines ◽  
Dimensional Assessment

scholarly journals The Relationship between Dental Follicle Width and Maxillary Impacted Canines’ Descriptive and Resorptive Features Using Cone-Beam Computed Tomography

2017 ◽  
Vol 2017 ◽  
pp. 1-5 ◽  
Author(s):  
İlhan Metin Dağsuyu ◽  
Rıdvan Okşayan ◽  
Fatih Kahraman ◽  
Mehmet Aydın ◽  
İbrahim Şevki Bayrakdar ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Root Resorption ◽  
Three Dimensional ◽  
Cone Beam ◽  
Dental Follicle ◽  
Impacted Canines ◽  
Impacted Canine ◽  
The Relationship ◽  
Maxillary Impacted Canine

Objectives. To assess the relationship between dental follicle width and maxillary impacted canines’ descriptive and resorptive features with three-dimensional (3D) cone-beam computed tomography (CBCT). Methods. The study comprised 102 patients with cone-beam computed tomography 3D images and a total of 140 impacted canines. The association between maxillary impacted canine dental follicle width and the variables of gender, impaction side (right and left), localization of impacted canine (buccal, central, and palatal), and resorption of the adjacent laterals was compared. Measurements were analyzed with Student’s t-test, Kruskal-Wallis test, and Mann–Whitney U statistical test. Results. According to gender, no statistically significant differences were found in the follicle size of the maxillary impacted canine between males and females (p>0.05). Widths of the follicles were determined for the right and left impaction sides, and no statistically significant relation was found (p>0.05). There were statistically significant differences between root resorption degrees of lateral incisors and maxillary impacted canine follicle width (p<0.05). Statistically significant higher follicle width values were present in degree 2 (mild) resorption than in degree 1 (no) and degree 3 (moderate) resorption samples (p<0.05). Conclusions. No significant correlation was found between follicle width and the variables of gender, impaction side, and localization of maxillary impacted canines. Our study could not confirm that increased dental follicle width of the maxillary impacted canines exhibited more resorption risk for the adjacent lateral incisors.

scholarly journals Morphometric evaluation of changes in the alveolar bone and roots of the maxillary anterior teeth before and after en masse retraction using cone-beam computed tomography

2012 ◽  
Vol 83 (2) ◽  
pp. 212-221 ◽  
Author(s):  
Hyo-Won Ahn ◽  
Sung Chul Moon ◽  
Seung-Hak Baek
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Alveolar Bone ◽  
Root Resorption ◽  
Three Dimensional ◽  
Cone Beam ◽  
Anterior Teeth ◽  
Labial Side ◽  
En Masse Retraction ◽  
Total P

ABSTRACT Objective: To evaluate the morphometric changes in the alveolar bone and roots of the maxillary anterior teeth (MXAT) after en masse retraction with maximum anchorage (EMR-MA). Materials and Methods: The samples consisted of 37 female adult patients who had Class I dentoalveolar protrusion (CI-DAP) and were treated by extraction of the first premolars and EMR-MA. Using three-dimensional cone-beam computed tomography taken before treatment and after space closure, the maxillary central incisors (MXCI, N  =  66), lateral incisors (MXLI, N  =  69), and canines (MXC, N  =  69) were superimposed using individual reference planes. After alveolar bone area (ABA), vertical bone level (VBL), root length (RL), root area (RA), and prevalence of dehiscence (PD) were measured at the cervical, middle, and apical levels, statistical analyses were performed. Results: On the palatal side, ABA significantly decreased in all levels of MXAT (P &lt; .001; middle of MXC, P &lt; .01). MXCI and MXLI exhibited a greater decrease in the ratio of change in palatal ABA than did MXC (cervical, P &lt; .01; middle and apical, P &lt; .05; total, P &lt; .001). Palatal/labial ABA ratios decreased in MXCI (cervical, middle, total, P &lt; .001; apical, P &lt; .05) and MXLI (cervical, P &lt; .001; apical, P &lt; .05). They showed greater amounts and ratios of change in VBL on the palatal side compared to the labial side (all P &lt; .001). The palatal side showed more PD in the cervical area than did the labial side (MXCI and MXLI, P &lt; .001; MXC, P &lt; .01). Significant root resorption occurred in MXAT (RL and RA, all P &lt; .001). Conclusions: During EMR-MA in cases with CI-DAP, ABA and VBL on the palatal side and RL and RA of MXCI and MXLI were significantly decreased.

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 Evaluating the Amount of Tooth Movement and Root Resorption during Canine Retraction with Friction versus Frictionless Mechanics Using Cone Beam Computed Tomography

2018 ◽  
Vol 6 (2) ◽  
pp. 384-388
Author(s):  
Mohamed Makhlouf ◽  
Amr Aboul–Ezz ◽  
Mona Salah Fayed ◽  
Hend Hafez
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
Tooth Movement ◽  
Root Resorption ◽  
Three Dimensional ◽  
Cone Beam ◽  
Lower Amount ◽  
Coil Spring ◽  
Canine Retraction ◽  
Retraction Force

BACKGROUND: The current study was carried out to compare the amount of tooth movement during canine retraction comparing two different retraction mechanics; friction mechanics represented by a NiTi closed coil spring versus frictionless mechanics represented by T - loop, and their effect on root resorption using Cone Beam Computed Tomography (CBCT).METHOD: Ten patients were selected in a split-mouth study design that had a malocclusion that necessitates the extraction of maxillary first premolars and retraction of maxillary canines. The right maxillary canines were retracted using T - loops fabricated from 0.017 X 0.025 TMA wires. The left maxillary canines received NiTi coil spring with 150 gm of retraction force. Pre retraction and post retraction Cone Beam Computed Tomography were taken to evaluate the amount of tooth movement and root resorption using three-dimensional planes.RESULTS: T - loop side showed statistically significant higher mean anteroposterior measurement than NiTi coil spring side, indicating a lower amount of canine movement pre and post a canine retraction. Concerning the root resorption, there was no statistically significant change in the mean measurements of canine root length post retraction.CONCLUSION: The NiTi coil spring side showed more distal movement more than the T-loop side. Both retraction mechanics with controlled retraction force, do not cause root resorption.

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