Prognosis for the impacted lower third molars: Panoramic reconstruction versus tomographic images

Moreira, Paulo Eliezer de Oliveira; Normando, David; Pinheiro, Lucas Rodrigues; Brandão, Gustavo Antônio Martins

doi:10.1016/j.oooo.2020.07.006

Cited by 5 publications

(4 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A previous study [18] reported no differences between panoramic and multiplanar CBCT images regarding the assessment of prognosis of third molars. However, there were significant differences in relation to the professional decision regarding the prognosis of these teeth, where OMFS have indicated more extractions than orthodontists.…”

Section: Discussionmentioning

confidence: 85%

The prediction of impacted versus spontaneously erupted mandibular third molars

2021

Self Cite

View full text Add to dashboard Cite

Background To evaluate the predictive capacity of orthodontists and oral maxillofacial surgeons (OMFSs) in anticipating the process of impaction or eruption of lower third molars (L3Ms) through the examination of serial panoramic radiographs. Methods Sixty-eight lower third molars (L3Ms) were analyzed in 34 orthodontically treated patients without extraction. Twenty-seven OMFSs and 27 orthodontists were randomized in order to analyze the radiographs. Initially, the evaluators issued the prognosis for the L3Ms in XR1, a posterior for the XR1 + XR2. Concordance of the diagnosis was examined using Kappa statistics, and the differences between the groups of evaluators were examined using the chi-square test at p<0.05. Results When examining XR1 in cases where the teeth erupted spontaneously, the prognostic accuracy rate for OMFSs and orthodontists was similar, 63 and 65.7%, respectively (p=0.19). When evaluating XR1 + XR2, the accuracy among orthodontists (60%) was similar to that reported for XR1 (p=0.19), while OMFSs presented a reduction in the accuracy (55.3%, p<0.0001). When the L3Ms remained impacted, accuracy in XR1 was lower than in spontaneously erupting L3Ms, although similar between OMFSs (50.1%) and orthodontists (49.1%). Furthermore, for impacted L3Ms, when examining XR1 + XR2, the OMFSs presented a significant higher accuracy (71.8%, p <0.0001). Conclusions Orthodontists and OMFSs seem unable to predict spontaneous eruption or impaction of the lower third molars from single or longitudinal x-rays. When adding a second longitudinal x-ray, orthodontists and more significantly OMFSs tend to indicate more extractions.

show abstract

Section: Discussionmentioning

confidence: 85%

The prediction of impacted versus spontaneously erupted mandibular third molars

2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…However, the ability of professionals to predict the eruption of these teeth using CT demonstrated that a three-dimensional image does not seem to change the prognosis established by specialists. 41 The most important finding of this study is the information that clinical decision to extract M3M can be precipitated and often misguided when based on twodimensional radiographic examinations. The results showed that even if the radiographs are taken longitudinally, the accuracy of prognosis is not increased.…”

Section: Discussionmentioning

confidence: 93%

The ability of orthodontists and maxillofacial surgeons in predicting spontaneous eruption of mandibular third molar using panoramic serial radiographs

Libdy

Rabello

Marques

et al. 2020

Dental Press J. Orthod.

Self Cite

View full text Add to dashboard Cite

Objective: To evaluate the skill of orthodontists and oral/maxillofacial surgeons (OMFS) in providing a prognosis of mandibular third molars spontaneously erupted, through follow-up panoramic analysis. Methods: 22 orthodontic patients treated without extraction, presenting spontaneously erupted mandibular third molars (n = 44) were analyzed through panoramic serial radiographs. The first panoramic radiograph was obtained just after orthodontic treatment (PR1), in patients aging from 13 to 19 years. A second panoramic radiograph (PR2), was obtained in average two years later. The radiographs were randomly analyzed by 54 specialists, 27 orthodontists and 27 OMFS, to obtain the opinion about the approach to be adopted to these teeth in PR1. Then, another opinion was collected by adding a serial radiograph (PR1+2). Results: The concordance of the answers was moderate for OMFS (Kappa 0.44; p< 0.0001) and significant for orthodontists (Kappa 0.39; p< 0.0001). In the analysis of the first radiograph (PR1) of the spontaneously erupted molars, OMFS indicated extraction in 44.5% of cases, while orthodontists indicated in 42%, with no difference between groups (p= 0.22). In PR1+2 analysis, orthodontists maintained the same level of extraction indication (45.6%, p= 0.08), while surgeons indicated more extractions (63.2%, p< 0.0001). Conclusions: Orthodontists and OMFS were not able to predict the eruption of the third molars that have erupted spontaneously. Both indicated extractions around half of the third molars. A follow-up analysis, including one more radiograph, did not improve the accuracy of prognosis among orthodontists and worsened for OMFS.

show abstract

“…Although CT scans offer detailed and accurate visualization of dental structures, the potential risks associated with radiation exposure should not be overlooked. On the contrary, the literature states that findings based on CT and OPTG radiographs do not show significant differences but would lead to divergent therapeutic approaches in clinical practice [ 61 ]. In addition to radiographic techniques, advancements in non-invasive imaging methods, such as magnetic resonance imaging (MRI), have shown potential in assessing dental and skeletal development [ 62 ].…”

Section: Discussionmentioning

confidence: 99%

Forensic Age Estimation: A Multifactorial Approach in a Retrospective Population Study

Bjelopavlovic,

Reder,

Fritzen

et al. 2023

Diagnostics

View full text Add to dashboard Cite

Objectives: The objective of this study was to evaluate the accuracy of forensic age estimation in a German population by combining clavicle and wisdom teeth assessments based on cone beam computed tomography (CT) data. The study aimed to determine the reliability of this approach in predicting biological age. Material and Methods: A total of 161 CT data sets from 120 males and 41 females with known exact ages were evaluated by three raters. The clavicle was assessed according to stages 1–5 (including substages 2a–c and 3a–c), and the Demirjian stage’s classification method was used for the wisdom teeth. Inter-class correlation (ICC) was calculated to assess the agreement among the three raters. Additionally, ordinary least square regressions were performed to predict chronological age using the clavicle or one of the four teeth. Finally, age prediction models using multiple indicators were developed. Results: The ICCs ranged from 0.82 for the clavicle to 0.86 and 0.88 for the wisdom teeth. Linear estimation tended to overestimate chronological age, especially in subjects over 18 years old. The clavicle showed the strongest overestimation. Combining age estimation from the clavicle with the upper and lower wisdom teeth improved the predictive power, resulting in a 14% and 15% increase in R² for the upper and lower wisdom teeth, respectively. Adding more than one tooth to the prediction did not improve the predictive power (all ΔR² < 1%). Conclusions: Age estimation using CT can be significantly improved by combining information from the analysis of wisdom teeth with age estimation based on the clavicle.

show abstract

Prognosis for the impacted lower third molars: Panoramic reconstruction versus tomographic images

Cited by 5 publications

References 21 publications

The prediction of impacted versus spontaneously erupted mandibular third molars

The prediction of impacted versus spontaneously erupted mandibular third molars

The ability of orthodontists and maxillofacial surgeons in predicting spontaneous eruption of mandibular third molar using panoramic serial radiographs

Forensic Age Estimation: A Multifactorial Approach in a Retrospective Population Study

Contact Info

Product

Resources

About