Root damage and repair in patients with temporary skeletal anchorage devices

American Journal of Orthodontics and Dentofacial Orthopedics : Official Publication of the American Association of Orthodontists, Its Constituent Societies, and the American Board of Orthodontics
Kasim Shakeel Ahmed VGoutham Kalladka

Abstract

The aim of this study was to evaluate the reparative potential of cementum histologically after intentional root contact with a temporary skeletal anchorage device. Seventeen patients (8 male, 9 female; mean age, 16.2 years; range, 13.5-21.6 years) who were scheduled for extraction of 4 first premolars as part of their orthodontic treatment participated in this study. The roots of the premolars were intentionally injured with a temporary skeletal anchorage device. The teeth were extracted at 4, 8, or 12 weeks after the injury. Root contact with the temporary skeletal anchorage device was confirmed by using a stereomicroscope. Histologic samples were prepared. Demineralized serial sections were stained with eosin and hematoxylin, and cementum repair was assessed histomorphometrically. Despite varying depths of the injuries, including involvement of dentin, reparative cementum formation was observed in all sections. Healing cementum was almost exclusively of the cellular type; 70% of all the teeth exhibited good repair by the end of week 12. This study established that healing of cementum takes place after an injury with a temporary skeletal anchorage device, and it is a time-dependent phenomenon.

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Citations

Apr 5, 2013·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Masayoshi UezonoKeiji Moriyama
Sep 19, 2015·Dental Traumatology : Official Publication of International Association for Dental Traumatology·Valai Kasim Shakeel AhmedRooban Thavarajah
Mar 12, 2015·The Angle Orthodontist·Patrick B HolmesJing Zhou
Oct 18, 2019·Australian Endodontic Journal : the Journal of the Australian Society of Endodontology Inc·Giampiero Rossi-FedeleEsma J Doğramacı
Jul 4, 2017·Progress in Orthodontics·Sneh A MehtaAmol S Patil
Dec 10, 2020·The Journal of the American Dental Association·Pi-En ChangYoon Jeong Choi
Apr 14, 2021·Scientific Reports·Yang-Jin YiYoung-Kyun Kim

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