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Outcome of orthodontic treatment in subjects with periodontal disease. Part III: a CBCT study of external apical root resorption
Jönköping University, School of Health and Welfare, HHJ. ADULT. Department of Orthodontics, Faculty of Odontology, Medical Academy, Lithuanian University of Health Sciences, Kaunas, Lithuania.ORCID iD: 0000-0001-8364-0510
Department of Oral and Maxillofacial Radiology, Sahlgrenska Academy, Institute of Odontology, University of Gothenburg, Gothenburg, Sweden.
Jönköping University, School of Health and Welfare, HHJ. Centre for Oral Health. Departments of Orthodontics, Institute for Postgraduate Dental Education, Sweden.ORCID iD: 0000-0002-3223-0068
Jönköping University, School of Health and Welfare, HHJ, Dep. of Natural Science and Biomedicine. Jönköping University, School of Health and Welfare, HHJ. Centre for Oral Health. Jönköping University, School of Health and Welfare, HHJ. ARN-J (Aging Research Network - Jönköping). Department of Periodontology, Institute for Postgraduate Dental Education, Sweden.ORCID iD: 0000-0001-5145-8220
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2019 (English)In: European Journal of Orthodontics, ISSN 0141-5387, E-ISSN 1460-2210, Vol. 41, no 6, p. 575-582Article in journal (Refereed) Published
Abstract [en]

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. 

Place, publisher, year, edition, pages
Oxford University Press, 2019. Vol. 41, no 6, p. 575-582
National Category
Dentistry
Identifiers
URN: urn:nbn:se:hj:diva-46973DOI: 10.1093/ejo/cjz040ISI: 000505544800003PubMedID: 31165877Scopus ID: 2-s2.0-85075092376Local ID: ;HHJOralISOAI: oai:DiVA.org:hj-46973DiVA, id: diva2:1375283
Available from: 2019-12-04 Created: 2019-12-04 Last updated: 2020-01-16Bibliographically approved

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Zasciurinskiene, EgleLindsten, RuneJansson, Henrik

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