Three-dimensional evaluation of the root resorption of maxillary incisors after the orthodontic traction of bicortically impacted canines: case reports

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.

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

Oral Surgery Oral Medicine Oral Pathology and Oral Radiology ◽

10.1016/j.tripleo.2011.03.035 ◽

2012 ◽

Vol 113 (2) ◽

pp. 260-267 ◽

Cited By ~ 38

Author(s):

Snehlata Oberoi ◽

Stephanie Knueppel

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Root Resorption ◽

Three Dimensional ◽

Cone Beam ◽

Impacted Canines ◽

Dimensional Assessment

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A comparative study of the effect of the intrusion arch and straight wire mechanics on incisor root resorption: A randomized, controlled trial

The Angle Orthodontist ◽

10.2319/06417-424r ◽

2017 ◽

Vol 88 (1) ◽

pp. 20-26 ◽

Cited By ~ 11

Author(s):

Marcio Rodrigues de Almeida ◽

Aline Siqueira Butzke Marçal ◽

Thais Maria Freire Fernandes ◽

Juliana Brito Vasconcelos ◽

Renato Rodrigues de Almeida ◽

...

Keyword(s):

Root Resorption ◽

Controlled Trial ◽

Three Dimensional ◽

Deep Bite ◽

Significance Level ◽

External Apical Root Resorption ◽

Maxillary Incisors ◽

Group 2 ◽

Leveling And Alignment ◽

Group 1

ABSTRACT Objective: To analyze and compare external apical root resorption (EARR) of maxillary incisors treated by intrusion arch or continuous archwire mechanics. Materials and Methods: This cone-beam computed tomography (CBCT) study analyzed 28 deep bite patients in the permanent dentition who were randomly divided into two groups: Group 1, 12 patients with initial mean age of 15.1 ± 1.6 years and mean overbite of 4.6 ± 1.2 mm treated with the Connecticut intrusion arch (CIA) in the upper arch (Ortho Organizers, Carlsbad, Calif) for a mean period of 5.8 ± 1.27 months. Group 2, 16 patients with initial mean age of 22.1 ± 5.7 years and mean overbite of 4.1 ± 1.1 mm treated with conventional leveling and alignment using continuous archwire mechanics for 6.1 ± 0.81 months. The degree of EARR was detected in 112 maxillary incisors by using CBCT scans and a three-dimensional program (Dolphin 11.7, Dolphin Imaging & Management Solutions, Chatsworth, Calif). The CBCT scans were obtained before (T1) and 6 months after initiation of treatment (T2). Differences between and within groups were assessed by nonpaired and paired t-tests, respectively, with a 5% significance level. Results: Significant differences were found for both groups between T1 and T2 (P < .05) indicating that EARR occurred in both groups. However, there were no significant differences when EARR was compared between group 1 (−0.76 mm) and group 2 (−0.59 mm). Conclusions: The Connecticut intrusion arch did not lead to greater EARR of maxillary incisors when compared with conventional orthodontic mechanics.

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Root Resorption of Maxillary Incisors caused by Bilaterally Impacted Canines: An Evaluation by Cone-Beam Computed Tomography

World Journal of Dentistry ◽

10.5005/jp-journals-10015-1261 ◽

2014 ◽

Vol 5 (1) ◽

pp. 67-71

Author(s):

Mateus Rodrigues Tonetto ◽

Alvaro Henrique Borges ◽

Matheus Coelho Bandéca ◽

Luiz Evaristo Ricci Volpato ◽

Thais Marchini Oliveira ◽

...

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Root Resorption ◽

Treatment Plan ◽

Development Stage ◽

Cone Beam ◽

Impacted Canines ◽

Anterior Teeth ◽

Maxillary Incisors ◽

One Year

ABSTRACT When root resorption of incisors occurs due to impaction of maxillary canines, several factors interfere in the treatment plan, such as the location and severity of root resorption, canine position, lack of space and dental development stage. The case of severe root resorption of permanent maxillary incisors caused by bilaterally impacted permanent maxillary canines and its multidisciplinary therapeutic approach in a 12-year-old girl is presented. After clinical and imaging examination, a treatment plan was outlined including preservation of primary canines, extraction of the permanent maxillary right canine and permanent maxillary left lateral incisor followed by its replacement with the orthodontically tractioned permanent canine and esthetic restoration of the permanent maxillary anterior teeth. One year after treatment, the result was satisfactory and the remaining teeth were still asymptomatic. The risk of root resorption in children with impacted permanent maxillary canines should not be neglected thus reducing subsequent complications. How to cite this article de Campos Neves ATS, Volpato LER, Oliveira TM, Palma VC, Tonetto MR, Bandeca MC, Borges AH. Root Resorption of Maxillary Incisors caused by Bilaterally Impacted Canines: An Evaluation by Cone-Beam Computed Tomography. World J Dent 2014;5(1):67-71.

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Evaluation of impacted canines’ localization and adjacent lateral incisors’ root resorption with orthopantomography and cone-beam computed tomography

Oral Radiology ◽

10.1007/s11282-020-00482-7 ◽

2020 ◽

Author(s):

Sibel Akkuc ◽

Gulsum Duruk ◽

Sacide Duman

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

Root Resorption ◽

Cone Beam ◽

Impacted Canines

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Sirenomelia: two case reports

Journal of Medical Case Reports ◽

10.1186/s13256-021-02699-4 ◽

2021 ◽

Vol 15 (1) ◽

Author(s):

Asiyeh Shojaee ◽

Firooze Ronnasian ◽

Mahdiyeh Behnam ◽

Mansoor Salehi

Keyword(s):

Case Reports ◽

Three Dimensional ◽

First Trimester ◽

Mendelian Inheritance ◽

Lower Limbs ◽

Congenital Deformity ◽

White Family ◽

Her Family ◽

Caudal Regression ◽

History Of

AbstractBackgroundSirenomelia, also called mermaid syndrome, is a rare lethal multi-system congenital deformity with an incidence of one in 60,000–70,000 pregnancies. Sirenomelia is mainly characterized by the fusion of lower limbs and is widely associated with severe urogenital and gastrointestinal malformations. The presence of a single umbilical artery derived from the vitelline artery is the main anatomical feature distinguishing sirenomelia from caudal regression syndrome. First-trimester diagnosis of this disorder and induced abortion may be the safest medical option. In this report, two cases of sirenomelia that occurred in an white family will be discussed.Case presentationWe report two white cases of sirenomelia occurring in a 31-year-old multigravid pregnant woman. In the first pregnancy (18 weeks of gestation) abortion was performed, but in the third pregnancy (32 weeks) the stillborn baby was delivered by spontaneous vaginal birth. In the second and fourth pregnancies, however, she gave birth to normal babies. Three-dimensional ultrasound imaging showed fusion of the lower limbs. Neither she nor any member of her family had a history of diabetes. In terms of other risk factors, she had no history of exposure to teratogenic agents during her pregnancy. Also, her marriage was non-consanguineous.ConclusionThis report suggests the existence of a genetic background in this mother with a Mendelian inheritance pattern of 50% second-generation incidence in her offspring.

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