Periodontal ligament repair after active splinting of replanted dogs' teeth

Autor: Léa Assed Bezerra da Silva, Paulo Nelson-Filho, Fábio Lourenço Romano, Carolina Maschietto Pucinelli, Marília Pacífico Lucisano, Cesar de Gregorio, Heloisa Aparecida Orsini Vieira, Francisco Wanderley Garcia Paula-Silva, Raquel Assed Bezerra da Silva, Nestor Cohenca
Rok vydání: 2021
Předmět:
Zdroj: Dental Traumatology. 37:758-771
ISSN: 1600-9657
1600-4469
DOI: 10.1111/edt.12698
Popis: BACKGROUND/AIM The high rate of root resorption resulting from tooth replantation represents a serious clinical problem. In order to prevent ankylosis and replacement resorption, the contemporary literature highlights the importance of using a flexible stabilization for traumatized teeth. For this purpose, orthodontic devices may be promising for obtaining a better prognosis and periodontal repair. The aim of this study was to evaluate the effect of an active splinting protocol with controlled force in dog's teeth following replantation. MATERIAL AND METHODS Sixty premolar roots from three dogs were used. They were submitted to endodontic treatment, hemisected, atraumatically extracted and subsequently replanted. They were divided into four groups: Passive Stabilization (n = 20)-after 20 min in a dry medium; Active Stabilization (n = 20)-after 20 min in a dry medium; Negative control (n = 10)-immediate replantation and passive Stabilization; and Positive control (n = 10)-90 min of extra-alveolar time and passive Stabilization. The samples were collected and submitted to histologic processing. They were then evaluated for the count of inflammatory cells, expression of neurotrophin 4, osteoclasts, apoptotic cells and collagen fibres. The results were submitted to ANOVA or Kruskal-Wallis statistical tests followed by Tukey or Dunn post-tests (α = 5%). RESULTS Passive Stabilization with orthodontic brackets without traction used after replantation had the highest number of inflammatory cells (p = .0122), osteoclasts (p = .0013) and percentage of collagen fibres in the periodontal ligament (p
Databáze: OpenAIRE
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