A novel method of objectively detecting tooth ankylosis using cone-beam computed tomography: A laboratory study

Martins, Luciano; Brasil, Danieli Moura; Freitas, Deborah Queiroz; Oliveira, Matheus Lima

doi:10.5624/isd.20220186

Cited by 4 publications

(1 citation statement)

References 19 publications

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“…Characterised by the fusion of root and bone, RRR manifests as a continuous radiographic image without distinct separation [ 30 ]. Computed tomography provides superior accuracy in detecting RRR [ 31 ], which benefits earlier identification compared with conventional X-ray imaging. In this animal study, micro-CT observations revealed a 33.3% occurrence of RRR in the occluded group, and a higher rate of 83.3% in the non-occluded group, showing an increased trend of RRR.…”

Section: Discussionmentioning

confidence: 99%

Physiological occlusal force attenuates replacement root resorption of replanted teeth: an experimental animal study

Ding,

Wang,

Liu

et al. 2024

BMC Oral Health

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Background Tooth avulsion represents the most severe form of dental trauma, necessitating tooth replantation as the primary treatment. However, the risk of replacement root resorption (RRR) poses a significant threat to tooth retention following replantation. This study preliminarily aimed to investigate the effect of physiological occlusal force on RRR after the replantation of avulsed teeth and to explore the potential underlying mechanisms. Methods Thirty-six 4-week-old male Sprague-Dawley rats underwent extraction and immediate replantation of their left maxillary molars. The rats were randomly divided into two major groups: the occluded (n = 18) group, where the opposite mandibular teeth were preserved; non-occluded (n = 18) group, where the opposite mandibular teeth were extracted. Within each major group, there were three subgroups corresponding to 7 days, 14 days, and 2 months, resulting in a total of six subgroups, (n = 6 per subgroup). The right maxillary first molars served as the normal control. Various periodontal characteristics were assessed using haematoxylin-eosin (H&E), tartrate-resistant acid phosphatase (TRAP) staining, and micro-computed tomography (micro-CT). Results Histological staining revealed that under occlusal force, the early stage (day 7) after tooth replantation mainly manifested as root surface resorption, especially in the non-occluded group, which gradually diminished over time. Cementum and periodontal ligament (PDL) repair was observed on day 14. Micro-CT analysis indicated a significant decrease in PDL width in the non-occluded group two months after replantation, consistent with the histological findings, signifying severe RRR in the non-occluded group. Conclusions This study provides preliminary evidence that physiological occlusal force may attenuate osteoclastogenesis during the early stage of tooth replantation, thereby reducing the occurrence of RRR and promoting periodontal healing.

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Section: Discussionmentioning

confidence: 99%

Physiological occlusal force attenuates replacement root resorption of replanted teeth: an experimental animal study

Ding,

Wang,

Liu

et al. 2024

BMC Oral Health

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Expression of artefacts from different orthodontic brackets and wires in cone beam computed tomography scans-an in vitro study

Troca,

Felizardo,

Gaêta-Araujo

2024

Clin Oral Invest

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Treatment options for impacted maxillary canines and occurrence of ankylotic and resorptive processes: a 20-year retrospective study

Cernochova,

Cernoch,

Klimo Kanovska

et al. 2024

BMC Oral Health

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Background This 20-year retrospective study aimed to evaluate the treatment methods used in patients with impacted maxillary permanent canines and to determine the occurrence of ankylotic and resorptive processes and their association with potential risk factors. Methods The cohort consisted of 351 consecutive Caucasian patients (120 males and 231 females, mean age 18.4 and 19.9 years, respectively) with 420 impacted maxillary permanent canines. CT and CBCT findings were subsequently confirmed during surgery. Statistical analyses were performed by the generalized linear models, Pearson x2 and Fisher exact tests using the statistical programs R and Statistica v. 14. Results A total of 273 (65.0%) impacted canines were aligned in the dental arch by orthodontic traction after surgical exposure, this treatment was predominant in patients under 20 years of age. Surgical extraction was performed in 115 (27.2%) impacted canines and was more common in older patients. Ankylotic changes were recorded in 61 (14.5%) impacted canines. The probability of ankylosis increased with age, particularly after the patient’s 20th year of life (p < 0.001). Patients were 1.2% likely to develop ankylosis at age 15 years, 4.3% at age 20 years, 14.1% at age 25 years, and 96.8% at age 45 years. Invasive cervical root resorption (ICRR) was found in 8 (1.9%) canines. In 4 canines (1.0%), root ankylosis in addition to ICRR was observed. In contrast to ankylosis, whose frequency of occurrence increased with age, the occurrence of ICRR resulting from PDL damage during surgery was more typical in younger patients. Canines in a high position above the root apices of the adjacent teeth, with a horizontal inclination of the longitudinal axis, with the crown located deep in the center of the alveolar bone and with labiopalatal position, should be considered critically impacted canines with a high risk to failure of orthodontic traction. Conclusion In conclusion, the treatment of impacted canines depends mainly on the age of the patient, and the position and inclination of the longitudinal axis of the impacted tooth. To select an adequate treatment method, we recommend CBCT examination, which allows a precise analysis of the position of impacted canines.

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A novel method of objectively detecting tooth ankylosis using cone-beam computed tomography: A laboratory study

Cited by 4 publications

References 19 publications

Physiological occlusal force attenuates replacement root resorption of replanted teeth: an experimental animal study

Physiological occlusal force attenuates replacement root resorption of replanted teeth: an experimental animal study

Expression of artefacts from different orthodontic brackets and wires in cone beam computed tomography scans-an in vitro study

Treatment options for impacted maxillary canines and occurrence of ankylotic and resorptive processes: a 20-year retrospective study

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