Association between tooth impaction and odontogenic lesions: A matched case-control study

Abstract

Background: Impacted tooth is common in dental practice. Dentists usually remove them if they are associated with any pathologic sign or symptom. The challenge is whether to extract the asymptomatic tooth or not. This study was conducted to determine the association between developmental odontogenic cysts and tumors and impacted and unerupted teeth, if left untreated. Methods: In this matched case-control study, 262 participants were recruited in case and control groups to evaluate the association between the presence of odontogenic cyst and tumors and unerupted and impacted teeth in patient records in the School of Dentistry, Shahid Beheshti University of Medical Sciences during 2000-2002. The controls referred to a dental radiology center for routine OPG. We also recorded the data on age, gender, the involved jaw, and type of lesion. All patients’ records were reviewed by the research director and an oral pathologist separately. The variables that were matched as confounders were age, gender, and the site of the involved jaw. Results: Results of conditional logistic regression analysis showed that the presence of odontogenic lesions was associated with impacted teeth (OR = 6.9), and not associated with the involved jaw and unerupted teeth. Conclusion: Impacted teeth could be considered as a potential risk factor for the presence of odontogenic lesions.

Pathologic conditions associated with impacted third molars: A retrospective study of panoramic radiographs in a Southern Brazilian population

“…Lower impacted 3Ms were found to be more likely to exhibit pathology than upper impacted teeth, a finding that supports previous studies. 23 37 40 In the maxilla, both the prevalence of impacted 3Ms (26.3%) and the occurrence of pathologic conditions (16.5%) were less frequent than in the mandible, for which the rates were 73.7% and 26.3%, respectively. As reported by Hounsome et al, 9 the prevalence of prophylactic extractions was considerably higher among upper 3Ms (79%) compared to lower 3Ms (22%).…”

“…Furthermore, those demographic variables have been the subject of investigation in previous studies. 10 12 32 40 …”

Impact of Immunohistochemical Expression of Collagen III and MMP-14 in Odontogenic Keratocyst

“…A study conducted in 2018 revealed that lesions associated with impaction, including dentigerous cyst, OKC, and ameloblastoma in the mandible, had different prevalences of (46.6%), (29.8%), and (9.2%), respectively, and most of the impaction located in the mandible 26 . In this study (41.7%) of OKCs were associated with the impacted tooth, and were located in the mandible and (79.2%) of all the lesions had a welldefined border.…”

Radiographic Assessment of Impacted Mandibular Third Molar- An Ex-vivo study

“…Although the decision to remove symptomatic third molars is a straightforward one, the prophylactic removal of asymptomatic third molars remains a controversial issue [15].…”