Patient characteristics and treatment variables associated with apical root resorption during orthodontic treatment

Linge, Leif; Linge, Brita Ohm

doi:10.1016/s0889-5406(05)81678-6

Cited by 382 publications

(285 citation statements)

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“…The levels of OIIRR in each group were similar and correspond to previous reports for orthodontic treatment using fixed appliances. [4][5][6][7]10,44 Additionally, OIIRR measured at the maxillary central incisor was not significantly influenced by age or sex of the patient, initial root length, history of dentoalveolar trauma during treatment, relative duration of the alignment phase or pain experience during this phase. Finally, the proportion of patients with severe OIIRR (>2 mm) was in agreement with previous studies 4,9,45 , similar amongst experimental groups and therefore not influenced by the use of vibrational force.…”

Section: Main Findingsmentioning

confidence: 79%

“…Measurements were made directly from scanned radiographs using Adobe Photoshop CS3 Version 10 (Adobe Systems, Inc., San Jose, CA, USA) using the Ruler Tool to the nearest 0.1 mm by a single operator (ATD) who was blinded to which group the patient was in. The difference in root length from the LCPA taken at T1 and T3 was determined using a correction factor to account for differences in enlargement between the two films based on the measured crown length 4 (Fig. 1).…”

Section: Discussionmentioning

confidence: 99%

“…4,5 The upper right central incisor should therefore be representative of any generalized level of OIIRR experienced. Of course, it is possible that other teeth were affected to a greater or lesser extent, but to assess this would have required greater exposure of the patients to ionizing radiation, which was also considered ethically unacceptable.…”

Section: Main Findingsmentioning

confidence: 99%

“…The prevalence of OIIRR among orthodontic patients has been reported as 73%, 1 90% 2 and 100% 3 in studies using plain film radiographs, cone beam computed tomography or histology, respectively. OIIRR most commonly affects the maxillary incisor, mandibular incisor and first permanent molar teeth 4,5 and is usually mild in nature, with only around 16% of orthodontic patients having clinically-relevant shortening of at least one tooth. [6][7][8][9] The aetiology of OIIRR is believed to be multifactorial with many factors influencing outcome, including root morphology, 10 history of dentoalveolar trauma, 4 patient age 6 and the presence of any underlying systemic inflammatory condition, such as asthma or allergy.…”

Section: Introduction Backgroundmentioning

confidence: 99%

“…OIIRR most commonly affects the maxillary incisor, mandibular incisor and first permanent molar teeth 4,5 and is usually mild in nature, with only around 16% of orthodontic patients having clinically-relevant shortening of at least one tooth. [6][7][8][9] The aetiology of OIIRR is believed to be multifactorial with many factors influencing outcome, including root morphology, 10 history of dentoalveolar trauma, 4 patient age 6 and the presence of any underlying systemic inflammatory condition, such as asthma or allergy. [11][12][13] Factors related to orthodontic treatment include the level and direction of force, [14][15][16][17][18] type of force 19,20 and contact of tooth roots with cortical bone.…”

Section: Introduction Backgroundmentioning

confidence: 99%

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Effect of supplemental vibrational force on orthodontically induced inflammatory root resorption: A multicenter randomized clinical trial

DiBiase

Woodhouse

Papageorgiou

et al. 2016

American Journal of Orthodontics and Dentofacial Orthopedics

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INTRODUCTION A multicenter parallel 3-arm randomized clinical trial was carried out in 1 university and 2 district hospitals in the United Kingdom to investigate the effect of supplemental vibrational force on orthodontically induced inflammatory root resorption (OIIRR) during the alignment phase of fixed appliance therapy. METHODS Eighty-one subjects less than 20 years old with mandibular incisor irregularity undergoing extraction-based fixed-appliance treatment were randomly allocated to supplementary (20 minutes a day) use of an intraoral vibrational device (AcceleDent; OrthoAccel Technologies, Houston, Tex) (n = 29), an identical nonfunctional (sham) device (n = 25), or fixed appliances only (n = 27). OIIRR was measured blindly from long-cone periapical radiographs of the maxillary right central incisor taken at the start of treatment and the end of alignment when a 0.019 × 0.025-in stainless steel archwire was placed (mean follow-up, 201.6 days; 95% confidence interval [CI], 188.6-214.6 days). Data were analyzed blindly on a per-protocol basis because losses to follow-up were minimal, with descriptive statistics, 1-way analysis of variance, and univariable and multivariable regression modeling. RESULTS Nine patients were excluded from the analysis; they were evenly distributed across the groups. Mean overall OIIRR measured among the 72 patients was 1.08 mm (95% CI, 0.89-1.27 mm). Multivariable regression indicated no significant difference in OIIRR for the AcceleDent (difference, 0.22 mm; 95% CI, -0.14-0.72; P = 0.184) and AcceleDent sham groups (difference, 0.29 mm; 95% CI, -0.15-0.99; P = 0.147) compared with the fixed-appliance-only group, after accounting for patient sex, age, malocclusion, extraction pattern, alignment time, maximum pain experienced, history of dentoalveolar trauma, and initial root length of the maxillary right central incisor. No other side-effects were recorded apart from pain and OIIRR. CONCLUSIONS The use of supplemental vibrational force during the alignment phase of fixed appliance orthodontic treatment does not affect OIIRR associated with the maxillary central incisor. REGISTRATION ClinicalTrials.gov (NCT02314975). PROTOCOL The protocol was not published before trial commencement. FUNDING Functional and sham AcceleDent units were donated by the manufacturer; there was no contribution to the conduct or the writing of this study.

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