scholarly journals A radiographic analysis of external apical root resorption of maxillary incisors during active orthodontic treatment

2007 ◽  
Vol 29 (2) ◽  
pp. 134-139 ◽  
Author(s):  
H. Mohandesan ◽  
H. Ravanmehr ◽  
N. Valaei
Keyword(s):  
Orthodontic Treatment ◽  
Root Resorption ◽  
Radiographic Analysis ◽  
Apical Root Resorption ◽  
External Apical Root Resorption ◽  
Maxillary Incisors

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.

scholarly journals External apical root resorption in maxillary root-filled incisors after orthodontic treatment: A split-mouth design study

2012 ◽  
pp. e523-e527 ◽  
Author(s):  
JM. Llamas-Carreras ◽  
A. Amarilla ◽  
E. Espinar-Escalona ◽  
L. Castellanos-Cosano ◽  
J. Martin-Gonzalez ◽  
...  
Keyword(s):  
Orthodontic Treatment ◽  
Root Resorption ◽  
Design Study ◽  
Apical Root Resorption ◽  
External Apical Root Resorption

scholarly journals Comparison of Apical Root Resorption encountered during Maxillary Incisor retraction using Stainless Steel Boot Loop and TMA Boot Loop – A Case Series

2016 ◽  
Vol 6 (1) ◽  
pp. 45-48
Author(s):  
Gaurav Gupta ◽  
Raj Kumar Singh ◽  
Ashima Relhan ◽  
Gurkeerat Singh ◽  
Abhishek Goyal
Keyword(s):  
Stainless Steel ◽  
Orthodontic Treatment ◽  
Root Resorption ◽  
Case Series ◽  
Maxillary Incisor ◽  
Apical Root Resorption ◽  
Incisor Retraction ◽  
External Apical Root Resorption

External apical root resorption (EARR) is probably the most common iatrogenic sequel of orthodontic treatment. The present case series focuses on the incisor retraction using frictionless mechanics. Boot loop made up of .019x.025 Stainless steel or TMA archwire were used for maxillary incisor retraction. Retraction with stainless steel boot loop showed greater root resorption as compared to TMA boot loop.Orthodontic Journal of Nepal, Vol. 6 No. 1, June 2016, pp.45-48 

scholarly journals Lower Incisor Root Resorption after Orthodontic Alignment and Leveling

2019 ◽  
Vol 21 (5) ◽  
pp. 494-499
Author(s):  
Ângela Graciela Deliga Schroder ◽  
Mariana Gonzaga Erthal Ribeiro ◽  
Alyssa Sales dos Santos ◽  
Amaro Ilidio Vespasiano Silva ◽  
Flavio Ricardo Manzi
Keyword(s):  
Orthodontic Treatment ◽  
Root Resorption ◽  
Positive Association ◽  
Time Interval ◽  
Bone Maturation ◽  
Lower Incisor ◽  
Apical Root Resorption ◽  
External Root Resorption ◽  
External Apical Root Resorption ◽  
Severe Degree

AbstractThe objective of this study was to evaluate the external apical root resorption in the lower incisors after orthodontic alignment and leveling using digital periapical radiographs. The sample consisted of periapical radiographs of 90 lower central incisors from 45 patients, 19 men and 26 women aged 12-36 years (mean 22.7 years). All the 90 lower central incisors were performed periapical radiographs in two phases: 1 - initial before orthodontic treatment and 2 - after alignment and dental leveling phase. The initial periapical radiographs were digitized through a transparency scanner. All patients were treated by the same orthodontist, the inclusion criteria were: never having been treated orthodontically; absence of exodontia, agenesis, malformation or defect in teeth, supernumerary teeth, endodontic treatment and impacted incisors. The time interval between the initial and post-leveling radiographs was from 6 to 12 months, with an average time of 9 months. It was observed that 47.8% of the incisors evaluated presented external apical root resorption, being most grade 1 (irregular contour up to 1 mm reabsorption). There was a positive association of external root resorption with the triangular root shape. There was no association between the severity of root resorption and the type of malocclusion.   An association was observed between age and resorption severity, that is, patients who have already reached bone maturation were more likely to develop apical external root resorption. Female patients were more likely, but when men developed external root resorption, it tended to be a more severe degree. Female adult patients, with a triangular root shape, anatomical apical pipette shape, regardless of malocclusion type are more likely to develop apical external root resorption in orthodontic treatment. Keywords: Radiography, Dental, Digital. Orthodontic. Root Resorption. Resumo Esse estudo teve como objetivo avaliar a reabsorção radicular apical externa nos incisivos inferiores após  alinhamento e nivelamento ortodôntico com radiografias periapicais digitais. A amostra consistiu de 90 radiografias periapicais de incisivos centrais inferiores de 45 pacientes, sendo 19 homens e 26 mulheres com idade entre 12 e 36 anos (média de 22,7 anos). As radiografias periapicais foram realizadas em dois momentos: 1 - inicial antes do tratamento ortodôntico e 2 - após fase de alinhamento e nivelamento dentário. Todas as radiografias foram digitalizadas através de um scanner de transparência. Todos os pacientes foram tratados pelo mesmo ortodontista e preenchiam os seguintes critérios de inclusão: não ter sido tratado ortodonticamente anteriormente; ausência de exodontia, agenesia, malformação ou defeito nos dentes, dentes supranumerários, tratamento endodôntico e incisivos impactados. O intervalo de tempo entre as radiografias inicial e pós-nivelamento foi de 6 a 12 meses, com tempo médio de 9 meses. Observou-se que 47,8% dos incisivos avaliados apresentaram reabsorção radicular apical externa, sendo a maioria de grau 1 (contorno irregular até reabsorção de 1 mm). Houve associação positiva da reabsorção radicular externa com a forma da raiz triangular. Não houve associação entre a gravidade da reabsorção radicular e o tipo de má oclusão. Observou-se associação entre idade e gravidade da reabsorção, ou seja, pacientes que já atingiram a maturação óssea apresentaram maior chance de desenvolver reabsorção radicular externa apical. Pacientes do sexo feminino foram mais frequentes, mas quando os homens desenvolveram reabsorção radicular externa, tenderam a ser mais graves. Um  paciente adulto, do sexo feminino, com formato de raiz triangular, região apical na forma anatômica de pipeta, independentemente do tipo de má oclusão, tem maior probabilidade de desenvolver reabsorção radicular externa no tratamento ortodôntico. Palavras-chave: Radiografia Dentária Digital. Ortodontia. Reabsorção da Raiz. 

scholarly journals Comparative study of root resorption of maxillary incisors in patients treated with lingual and buccal orthodontics

2017 ◽  
Vol 87 (6) ◽  
pp. 795-800 ◽  
Author(s):  
Carlos Eduardo Nassif ◽  
Andreia Cotrim-Ferreira ◽  
Ana Claudia Castro Ferreira Conti ◽  
Danilo Pinelli Valarelli ◽  
Mauricio de Almeida Cardoso ◽  
...  
Keyword(s):  
Image Processing ◽  
Comparative Study ◽  
Root Resorption ◽  
Conventional Group ◽  
Anterior Crowding ◽  
Apical Root Resorption ◽  
Processing Program ◽  
External Apical Root Resorption ◽  
T1 And T2 ◽  
Maxillary Incisors

ABSTRACT Objective: To compare the magnitude of external apical root resorption (EARR) of maxillary incisors in patients with mild to moderate anterior crowding, treated with lingual and conventional (labial) orthodontics. Materials and Methods: The sample comprised 40 patients divided into two groups: lingual (20 patients) and conventional buccal brackets (20 patients). Patient ages ranged from 11 to 45 years, and the study included 12 men and 28 women. Apical root resorption was measured from periapical radiographs obtained at the beginning of treatment (T1) and at the end of the leveling phase (T2). Periapical radiographs were scanned and transferred to the CorelDraw X7 image-processing program, in which measurements of root lengths were performed. For intragroup and intergroup comparisons between the T1 and T2 phases, paired and independent t-tests, respectively, were used at 5% significance. Results: There was significant apical root resorption for all teeth evaluated; the magnitude of the EARR (T2−T1) ranged from −0.35 mm to −0.63 mm in the lingual group, and from −0.66 mm to −0.85 mm in the conventional group. Although there was an intergroup variation in the magnitude of EARR observed, no statistically significant differences were found. Neither group presented any teeth with resorption ≥1 mm. Conclusions: The magnitude of apical root resorption in maxillary incisors in patients with anterior crowding was similar regardless of orthodontic technique, lingual or conventional. Both techniques resulting in an apical rounding considered clinically insignificant.

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