Quantitative evaluation of bone-related factors at the implant site by cone-beam computed tomography

Objective: This study sought to assess the frequency and severity of second molar external root resorption (ERR) due to the adjacent third molar and its correlation with the position of third molar and other related factors using cone-beam computed tomography (CBCT). Materials and Methods: This cross-sectional study evaluated 320 second molars and their adjacent impacted third molars on CBCT scans of patients over 16 years, retrieved from the archives of Azad University Radiology Department. Presence/absence of second molar ERR, its location and severity (if present), and position of adjacent third molar were determined on CBCT scans, and recorded in a checklist. Data were analyzed using a logistic regression model. Results: The frequency of second molar ERR was 33.4% in the mandible and 14% in the maxilla. The severity of ERR was significantly correlated with the involved jaw (P=0.001) but had no correlation with age, gender, or depth of impaction of adjacent third molar (P>0.05). The mesioangular and horizontal positions of impacted third molars had a significant correlation with the frequency of second molar ERR (P<0.006). Conclusion: According to the results of this study, ERR occurring in second molars adjacent to third molars is common, especially in the mandible. Mesially inclined third molars have a greater potential of being associated with ERR in second molars.

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Quantitative evaluation of masseter muscle volume in different growth patterns and its correlation with facial morphology: Cone beam computed tomography study

The Journal of Indian Orthodontic Society ◽

10.4103/0301-5742.179942 ◽

2016 ◽

Vol 50 (2) ◽

pp. 106-110 ◽

Cited By ~ 1

Author(s):

Mukesh Gupta ◽

P G Makhija

Keyword(s):

Computed Tomography ◽

Quantitative Evaluation ◽

Cone Beam Computed Tomography ◽

Masseter Muscle ◽

Growth Patterns ◽

Muscle Volume ◽

Cone Beam ◽

Facial Morphology

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Quantitative evaluation of maxillary interradicular bone with cone-beam computed tomography for bicortical placement of orthodontic mini-implants

American Journal of Orthodontics and Dentofacial Orthopedics ◽

10.1016/j.ajodo.2015.02.018 ◽

2015 ◽

Vol 147 (6) ◽

pp. 725-737 ◽

Cited By ~ 13

Author(s):

Lei Yang ◽

Feifei Li ◽

Meng Cao ◽

Hong Chen ◽

Xi Wang ◽

...

Keyword(s):

Computed Tomography ◽

Quantitative Evaluation ◽

Cone Beam Computed Tomography ◽

Cone Beam ◽

Mini Implants

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Diagnosis of cracked teeth using cone-beam computed tomography: Literature review and clinical experience

Dentomaxillofacial Radiology ◽

10.1259/dmfr.20200407 ◽

2020 ◽

pp. 20200407

Author(s):

Antian Gao ◽

Dantong Cao ◽

Zitong Lin

Keyword(s):

Computed Tomography ◽

Cone Beam Computed Tomography ◽

American Association ◽

Root Resorption ◽

Cone Beam ◽

Related Factors ◽

External Root Resorption ◽

Factors Influencing ◽

Root Fractures ◽

Clinic Practice

Cone-beam computed tomography (CBCT) has been widely used in diagnosis of vertical root fractures (VRFs) in recent years. According to the American Association of Endodontists (AAE) classification, there are five types of cracked teeth and VRF is one of them. Due to the variability and overlapping of the cracks and fractures, some narrow fractures on the roots of VRFs could not be detected by CBCT, and some wide cracks on the crown of cracked teeth could be detected by CBCT. In this review, we firstly discussed the value of CBCT in the diagnosis of the AAE five types of cracked teeth and presented CBCT manifestations of some typical cases. Secondly, we summarized the factors influencing the diagnosis of cracks/fractures using CBCT, namely, CBCT device-related factors, patient-related factors, and evaluator-related factors. The possible strategies to improve the diagnostic accuracy in the clinic practice are also discussed in this part. Finally, we compared the differences of root fractures with lateral canals and external root resorption on CBCT images.

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