Journal of Shandong University (Health Sciences) ›› 2020, Vol. 58 ›› Issue (8): 115-119.doi: 10.6040/j.issn.1671-7554.0.2020.0966

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Factors influencing root resorption after replantation of avulsed permanent teeth: a report of 47 teeth

HAN Ting1,2, DU Jing3, YU Jiali2,4, ZHENG Wenzhou2,4, WANG Yan2,4   

  1. 1. Department of Emergency, School and Hospital of Stomatology, Cheeloo College of Medicine, Jinan 250012, Shandong, China;
    2. Shandong University &
    Shandong Key Laboratory of Oral Tissue Regeneration &
    Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration;
    3. Department of Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, Sichuan, China;
    4. Department of VIP Center, School and Hospital of Stomatology, Cheeloo College of Medicine, Jinan 250012, Shandong, China
  • Published:2020-08-07

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Abstract: Objective To summarize the clinical characteristics of avulsed permanent teeth and to analyze the factors influencing root resorption after implantation. Methods A total of 35 patients with 47 avulsed permanent teeth due to trauma were enrolled in this study. The avulsed teeth were replanted during 2017 and 2018 in the Hospital of Stomatology, Shandong University. All cases were followed up regularly for more than 1 year. Results (1) Root resorption was observed in 20(42.6%)teeth during the follow-up. (2) For the 7 teeth replanted within 1 hour after avulsion, the rate of root resorption was 0.0%, while for the 40 teeth replanted more than 1 hour after avulsion, the rate of root resorption was 50%, and the difference was significant(P=0.015). (3) The rate of root resorption was significantly lower in mature cases(32.3%)than in immature cases(62.3%)(P=0.047). (4) Teeth stored in saliva(n=17)had a lower rate of resorption(17.6%)than teeth stored in normal saline(n=11, 63.3%, P=0.020)or in dry medium(n=11, 72.7%, P=0.006), and there was no difference between the latter two media. Conclusion The time elapsed from the socket and storage medium play an important role in improving the periodontal healing of avulsed teeth. Replanting the avulsed teeth in time and storing them in appropriate medium can significantly reduce the rate of root resorption.

Key words: Avulsion, Tooth replantation, Root resorption, Pulpectomy

CLC Number: 

  • R781
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