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Relationship between the Position of Impacted Third Molars and External Root Resorption of Adjacent Second Molars: A Retrospective CBCT Study.
- Source :
-
Medicina (Kaunas, Lithuania) [Medicina (Kaunas)] 2019 Jun 24; Vol. 55 (6). Date of Electronic Publication: 2019 Jun 24. - Publication Year :
- 2019
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Abstract
- Background and Objectives: Impacted third molars (ITM) are the most commonly-impacted teeth. There is a risk for ITM to cause a number of pathological conditions, and external root resorption (ERR) of adjacent teeth is one of the most prevalent. Retaining or prophylactic extraction of ITM is a polemic topic. External root resorption of adjacent teeth is one of possible indications for prophylactic removal of ITM. The aim of this study was to assess the relationship between external root resorption (ERR) on the distal aspect of second molars' roots and positional parameters of ITM. Methods : Cone beam computed tomography scans of 109 patients (41 males, 68 females; mean age 26.4 ± 7.9 years) with 254 ITM (131 in the maxilla and 123 in the mandible) were retrospectively analyzed. Positional parameters of ITM (mesio-distal position, angulation, impaction depth, and available eruption space) were evaluated. The presence, location, and depth of ERR of adjacent second molars were assessed. Results: Analysis showed a relationship between ITM impaction depth, mesial inclination angle, and the presence of ERR. Mesial inclination angle of more than 13.6° increased the odds of ERR occurrence by 5.439 (95% CI, 2.97-9.98). ITM presence at the level of ½ of roots of the adjacent second molar or more apically increased the odds of ERR occurrence by 2.218 (95% CI, 1.215-4.048). No significant correlation was detected between the occurrence of ERR and patient age, gender, or the available eruption space in the mandible. Depth of ERR did not depend on its location. Conclusions: Incidence of ERR in second molars is significantly associated with mesial inclination and a deep position of ITM.
- Subjects :
- Adolescent
Adult
Cone-Beam Computed Tomography methods
Female
Humans
Incidence
Male
Middle Aged
Molar, Third physiopathology
ROC Curve
Retrospective Studies
Root Resorption physiopathology
Tooth, Impacted physiopathology
Molar, Third injuries
Root Resorption etiology
Tooth, Impacted complications
Subjects
Details
- Language :
- English
- ISSN :
- 1648-9144
- Volume :
- 55
- Issue :
- 6
- Database :
- MEDLINE
- Journal :
- Medicina (Kaunas, Lithuania)
- Publication Type :
- Academic Journal
- Accession number :
- 31238599
- Full Text :
- https://doi.org/10.3390/medicina55060305