scholarly journals Apical Root Resorption: A Prospective Radiographic Study of Maxillary Incisors

2011 ◽  
Vol 05 (03) ◽  
pp. 318-323 ◽  
Author(s):  
Ilken Kocadereli ◽  
Turkan Nadire Yesil ◽  
Pınar Sahin Veske ◽  
Serdar Uysal
Keyword(s):  
Image Analysis ◽  
Treatment Duration ◽  
Orthodontic Treatment ◽  
Root Resorption ◽  
Radiographic Study ◽  
Flatbed Scanner ◽  
Time Intervals ◽  
Evaluation Period ◽  
Apical Root Resorption ◽  
Maxillary Incisors

ABSTRACTObjectives: The aim of this study was to determine the prevalence of apical root resorption in maxillary incisors during the initial stages of active orthodontic treatment and to test the hypothesis that root resorption increases with the progress of the treatment. Methods: The study sample consisted of 80 teeth of 20 patients (14 female, 6 male) with a mean age of 14.9±2.8 years. Root resorption was determined with standardized digitized periapical radiographs. All the periapical radiographs were obtained at the beginning of orthodontic treatment (T0) and 3 months (T1), 6 months (T2) and 9 months (T3) after the beginning of the treatment by a paralleling device. They were digitalized as 600 dpi with a flatbed scanner and analyzed by software for image analysis at 400x magnification utilizing a personal computer. Results: All of the 4 maxillary incisors had an increasing amount of resorption during the 9-month period. The amount of root resorption between the time intervals was statistically significant (P<.05). Conclusions: Root resorption of maxillary incisors can be detected in the early stages of orthodontic treatment and appears to be related to treatment duration. According to 9-month evaluation period, apical root resorption is of limited clinical significance for the average orthodontic patient. (Eur J Dent 2011;5:318-323)

scholarly journals The correlation between external apical root resorption and electric pulp test responses: a prospective clinical trial

2021 ◽  
Vol 26 (3) ◽  
Author(s):  
Farnaz YOUNESSIAN ◽  
Mohammad BEHNAZ ◽  
Mohammadreza BADIEE ◽  
Kazem DALAIE ◽  
Arezou SARIKHANI ◽  
...  
Keyword(s):  
Root Length ◽  
Orthodontic Treatment ◽  
Root Resorption ◽  
Pearson Correlation ◽  
Multiple Linear Regression Model ◽  
Time Intervals ◽  
Apical Root Resorption ◽  
Anterior Teeth ◽  
External Apical Root Resorption

ABSTRACT Objective: The current study investigated the correlation between pulpal sensitivity to the electric pulp tester (EPT) and external apical root resorption (EARR) in four types of maxillary anterior teeth of fixed orthodontic treatment patients. Methods: In this prospective cohort study, 232 anterior teeth of 58 patients (mean age 18.96 ± 6.13 years) treated with fixed orthodontic treatment were examined. The EPT readings were recorded at twelve time points immediately before archwire insertion. Root resorption of four maxillary incisors were measured by means of parallel periapical radiographs at three time intervals (six months interval from the start) through design-to-purpose software to optimize data collection. A multiple linear regression model and Pearson correlation coefficient were used to assess the association of EPT values and observed EARR (p< 0.05). Results: The highest level of EPT measurement was recorded at initial visit, and then there was a decreasing trend in EPT level during treatment for the next six and twelve months. There was another increasing trend after six months till the finishing time of the treatment. There was a significant correlation between changes in root length and time of recording the root length (p< 0.001). There was significant positive correlation between changes in EPT level and amount of observed root resorption (p< 0.001). Conclusion: The relative decrease in electric pulp test level could be a diagnostic sign of root resorption during orthodontic treatment. Further studies with longer follow up are needed to confirm the current results.

Outcome of orthodontic treatment in subjects with periodontal disease. Part III: a CBCT study of external apical root resorption

2019 ◽  
Vol 41 (6) ◽  
pp. 575-582 ◽  
Author(s):  
Eglė Zasčiurinskienė ◽  
Henrik Lund ◽  
Rune Lindsten ◽  
Henrik Jansson ◽  
Krister Bjerklin
Keyword(s):  
Periodontal Disease ◽  
Inclination Angle ◽  
Orthodontic Treatment ◽  
Root Resorption ◽  
Control Group ◽  
Central Incisor ◽  
Maxillary Central Incisor ◽  
Apical Root Resorption ◽  
External Apical Root Resorption ◽  
Maxillary Incisors

Summary Background No evidence is present on the risk for external apical root resorption (EARR) during orthodontic treatment (OT) of adult patients with periodontal disease. Aim To examine EARR after OT in subjects with periodontal disease and to analyse how intrusion and change in inclination of the most proclined maxillary incisors influence EARR. Methods The study included 50 patients with periodontal disease. Sub-gingival debridement by ultrasonic instrumentation supplemented with hand instruments was performed by experienced dental hygienist after baseline examination for all patients. For the control group, final periodontal treatment (PT) was performed before orthodontic tooth movement. For the test group patients, final PT was performed after levelling and alignment phases were finished, before the active space closure with elastic chain and/or inter-arch elastic traction for sagittal correction was started. OT was performed with a straight-wire appliance. Micro-implants or implants were used for posterior anchorage. Cone beam computed tomography examinations were performed before and after OT. EARR of all single-rooted teeth were measured. EARR of the most proclined maxillary incisor was related to intrusion and change in inclination angle. Results EARR after OT was observed in median 80.7 per cent (interquartile range 22.02) of single-rooted teeth [mean 1.2 (standard deviation 0.44) mm]. In 82.3 per cent of teeth, EARR was 2 mm or less. Severe EARR was found in 8 per cent of patients and five maxillary incisors (less than 1 per cent of all teeth). The amount of intrusion and change in inclination angle of the most proclined maxillary central incisor influenced the extent of EARR. Mean EARR was significantly higher when OT lasted more than 18 months (P = 0.02). Conclusions OT in conjunction with PT in periodontal patients resulted in EARR in 81 per cent of all single-rooted teeth. Intrusion and change in inclination angle of the most proclined maxillary central incisor influenced the extent of EARR, as did longer OT.

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