Ectopic Eruption of Permanent First Molars
|ClinicalTrials.gov Identifier: NCT04282772|
Recruitment Status : Completed
First Posted : February 25, 2020
Last Update Posted : February 25, 2020
|Condition or disease||Intervention/treatment|
|Failure of Tooth Eruption Associated With Tooth Impaction||Diagnostic Test: Impacted Diagnostic Test: Self-corrected|
Assessment of Angulation The angles between the axes of the PSMs and the long axes of the PFMs were measured. The angle was measured using ImageJ application (1.50 n, National Institutes of Health, Bethesda, MD, USA). The long axes were formed by a line extending parallel to the center of the tooth in an occluso-cervical manner. The vertical angle was defined as (−) or (+) according to Sun et al.The angles between the occlusal lines of the PSMs and the PFMs were measured. The horizontal angle was defined as (−) or (+) according to Sun et al.
Assessment of PSM Root Resorption The distal root resorption level of the PSM was determined using Barberia-Leache et al.'s classification2 as follows; Grade I: mild—limited resorption of the cementum or with minimum dentin penetration Grade II: moderate—resorption of the dentin without pulp exposition Grade III: severe—resorption of the distal root leading to pulp exposure Grade IV: very severe—resorption that affects the mesial root of the PSM.
Assessment of PFM Mesialization Ratio The mesiodistal size of the PFM and the amount of mesialization were measured by the Image J application to evaluate the differences between reversible and irreversible ectopic eruption. The mesiodistal size was measured from the largest part of the crown, and the amount of mesialization was measured using the distance between the drawn tangent on the distal wall of the PSM and the mesial convexity of the PFM. Afterwards, the amount of mesialization was proportioned to the mesiodistal size of the PFM.
|Study Type :||Observational|
|Actual Enrollment :||84 participants|
|Official Title:||Ectopic Eruption of Permanent First Molars: A Retrospective Study|
|Actual Study Start Date :||January 1, 2019|
|Actual Primary Completion Date :||January 1, 2020|
|Actual Study Completion Date :||February 1, 2020|
The ectopic eruption of PFMs were classified in two ways: impacted and self-corrected.
Diagnostic Test: Impacted
Until an active treatment for the PFM is started or the early exfoliation of PSM occurs, the tooth remains in a self-locking position
Diagnostic Test: Self-corrected
The ectopic erupted permanent molar can disregard the self-locking position and continue in a normal direction, but the distal root of the PSM remains more or less a significant atypical resorption
- Determination of the ectopic eruption prevalence. [ Time Frame: 6 months ]Data were collected retrospectively from clinical notes and panoramic radiographs. Among the 11,924 radiographs, only the children who had at least one ectopically erupted PFM were included.
- Determination of the ectopic eruption related factors. [ Time Frame: 3 months ]The angulation of PFM, mesialization ratio of PFM, and degree of adjacent PSM tooth root resorption were assessed using ImageJ application.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04282772
|Eskişehir Osmangazi University|
|Eskişehir, Turkey, 26040|
|Principal Investigator:||Seçil Çalışkan||Eskişehir Osmangazi University|