Risk factors for external root resorption of maxillary second molars associated with third molars

Choi, Jin‐Woo

doi:10.5624/isd.20220401

Cited by 6 publications

(4 citation statements)

References 24 publications

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“…Due to the nature of the study, it is exceedingly challenging to avoid this bias. We discovered that at least one radiographically discernible lesion was connected to nearly half of the impacted mandibular third teeth that were examined [13][14][15]. This result disagrees with several other studies but is generally consistent with other others.…”

Section: Discussionsupporting

confidence: 47%

Impacted Mandibular Third Molars Associated Pathologies

Sahibzada¹,

Khan²,

Sardar³

et al. 2022

PJMHS

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Purpose: The purpose of this research was to identify the most common and severe types of pathologic diseases surrounding impacted mandibular third molars using radiographic imaging. Cases and procedures: An analysis of past patients who had impacted mandibular molars extracted at Oral & Maxillofacial Surgery of Cat D Hospital Gara Tajik Peshawar. Impacted mandibular third molar radiographic lesions, patient age and gender were used as the study's outcome measures. Caries, pericoronal radiolucent areas, periapical radiolucent areas, odontomes, and external resorption of the roots of adjacent mandibular second molars were also noted on radiographs of the impacted third molar. Histopathology confirmed the presence of bone marrow in all radiolucent regions. Results: There were 2,832 mandibular third molars that had been impacted and were studied from 1,397 individuals; 49.4 percent of the impacted teeth had associated radiographic abnormalities. Dental cavities were the most prevalent abnormality detected by panoramic radiography. Other examples of this type of radiolucency can be found at the periphery of the cortex and at the tip of the apex. Histological analysis confirmed that chronic periapical inflammation was the primary cause of most periapical radiolucent regions. Histological examination revealed that all radiolucent spots located around the corona were malignant cysts or tumours. Dentigerous cysts were the most common type of cyst, while ameloblastomas were the most common type of tumour. Conclusion: A large proportion of the patients with a third molar impaction in the mandible also had an underlying pathologic condition. Keywords: Mandibular, Radiolucent, Panoramic, Tumor

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Section: Discussionsupporting

confidence: 47%

Impacted Mandibular Third Molars Associated Pathologies

Sahibzada¹,

Khan²,

Sardar³

et al. 2022

PJMHS

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“…Signi cant efforts have been devoted to identifying the speci c type of M3 that may lead to ERR. Previous studies have primarily focused on potential risk factors for ERR, while it was possible to predict that M3 with these risk factors presented a higher likelihood of causing ERR [12,19], such predictions inherently involved multiple variables. However, in practical terms, due to the inability to ascertain the precise probability of M2-ERR, patients and dentists continue to have di culty in making decisions regarding whether M3 should be extracted based on existing risk factors.…”

Section: Discussionmentioning

confidence: 99%

“…Based on case reports and retrospective studies, numerous risk factors have been linked to ERR. These include sex, age, type of impaction, inclination of M3, and others [9][10][11][12]. Despite extensive exploration of numerous risk factors, further research is still necessary to determine if there are any other factors that may be correlated with ERR.…”

Section: Introductionmentioning

confidence: 99%

Investigation of risk factors for external root resorption of the second molars associated with impacted third molars and development of a prediction model：A multicenter cross- sectional study

Kou,

Zhang,

et al. 2024

Preprint

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Objectives The aim of the present study was to investigate the risk factors for external root resorption (ERR) of the second molars (M2) associated with impacted third molars (M3) and to develop a prediction model for clinical assessing the risk of ERR based on the individual characteristics of M3. Materials and methods A total of 798 patients with 2156 impacted third molars were collected from three centers between December 1, 2018 and December 15, 2018. ERR was identified by cone beam computed tomography (CBCT)examinations. The effects of different risk factors on the presence/absence of ERR and its severity were analyzed using Chi-Square or Fisher test. Multivariate logistic regressive analysis with stepwise variable selection methods was performed to identify factors which were significant predictors for ERR and its severity. Subsequently, a prediction model was developed, and the model performance was validated internally and externally. Results The overall incidence of ERR of second molars was found to be 16.05%. Risk factors of ERR included age, position (upper or lower jaw), impact depth, impact type, contact position, M2 situation in opposing jaw and root number of M3. The prediction model was established using six factors including position, impact type, impact depth (including PG:A-B-C and PG:I-II-III),contact position and root number of M2. In terms of internal validation, the model achieved an AUC of 0.959 and a prediction accuracy of 0.896 (95% CI, 0.867, 0.921). The Kappa value was 0.572, with a sensitivity of 0.956 and a specificity of 0.571. Additionally, for external validation, the model demonstrated an AUC of 0.975 and a prediction accuracy of 0.910 (95% CI, 0.870–0.941). The Kappa value was calculated as 0.653, with a sensitivity of 0.941 and a specificity of 0.732. Conclusion A risk prediction model for ERR was established in the present study. Position (upper or lower jaw), impact type, impact depth, contact position and root number of M2 were identified as influencing variables which were significant predictors in the development of this predictive model. The prediction model showed great discrimination and calibration. Clinical relevance: This prediction model has the potential to aid dentists and patients in making clinical decisions regarding the necessity of M3 extraction.

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“…There is most available data from case reports about the root resorption of second molars as a complication of impacted third molars. 8,9,10 The published data have shown that the position and angulation of third molars affect symptoms and pathological eects associated with impacted third molar. 11,12 A relationship between the width of the peri-coronal space and the presence of an epithelial lining associated with an impacted tooth has been previously reported.…”

Section: Discussionmentioning

confidence: 99%

Inter-Rater Reliability Regarding the Radiolucencies Associated with the Second Molar Adjacent an Impacted Third Mandibular Molar

Qamar,

Ashraf,

Zahid

et al. 2023

J Gandhara Med Dent Sci

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OBJECTIVES To assess the inter-rater reliability regarding the radiolucencies associated with a second molar adjacent to an impacted third molar. METHODOLOGY A cross-sectional comparative study was conducted in the College of Dentistry, Sharif Medical and Dental College, Lahore, in which dentists from four different specialities, namely; Oral Pathology, Endodontics, Prosthodontics and Oral and Maxillofacial surgery, were included as raters. 21 Orthopantomograms were assigned to each rater for assessing radiolucencies associated with a second molar adjacent to an impacted third molar. RESULTSThe level of agreement regarding the radiolucencies associated with the second molar observed on the Orthopantomograms between rater 1 with rater 2 (κ=0.158., p=0.036) and rater 1 with rater 3 (κ=0.139, p=1.000) was very weak but was fair between rater1 and 4 (κ=0.271, p=0.200). CONCLUSION The only radiolucency that rater one observed was external root resorption. Rater 2 identified one case of radiolucency as dental caries and another as caries and periapical radiolucency that were identified by Rater 1 as external resorption; hence they had a weak agreement between Rater 1 and Rater 2 regarding the radiolucencies associated with second molars. Rater 3 identified radiolucencies owing to caries which were reported to be radiolucency due to external resorption by rater 1, and this agreement was weak. Most radiolucencies determined by rater 1 as external resorption were reported to be external resorption by rater 4, resulting in a fair agreement between rater 1 and 4.

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Risk factors for external root resorption of maxillary second molars associated with third molars

Cited by 6 publications

References 24 publications

Impacted Mandibular Third Molars Associated Pathologies

Impacted Mandibular Third Molars Associated Pathologies

Investigation of risk factors for external root resorption of the second molars associated with impacted third molars and development of a prediction model：A multicenter cross- sectional study

Inter-Rater Reliability Regarding the Radiolucencies Associated with the Second Molar Adjacent an Impacted Third Mandibular Molar

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