Chinese Journal of Tissue Engineering Research ›› 2014, Vol. 18 ›› Issue (34): 5441-5448.doi: 10.3969/j.issn.2095-4344.2014.34.006

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Acellular dermal matrix allograft combined with coralline hydroxyapatite repair periapical tissue defects

Xu Jun1, Wang Jin-tao2, Li Gang1, Shi Fang-chuan2, Zhong Liang-jun2   

  1. 1 Periodontal & Mucosal Department, Center of Stomatology, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China; 2 Department of Stomatology, the Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, Zhejiang Province, China
  • Revised:2014-06-05 Online:2014-08-20 Published:2014-08-20
  • Contact: Zhong Liang-jun, M.D., Professor, Chief physician, Department of Stomatology, the Affiliated Hospital of Hangzhou Normal University, Hangzhou 310015, Zhejiang Province, China
  • About author:Xu Jun, Master, Lecturer, Attending physician, Periodontal & Mucosal Department, Center of Stomatology, the First Affiliated Hospital of Xinjiang Medical University, Urumqi 830054, Xinjiang Uygur Autonomous Region, China
  • Supported by:

     a grant from Xinjiang Uygur Autonomous Region, No. 201091144

Abstract:

BACKGROUND: Chronic periapical periodontitis often causes periapical tissue defects and ultimately leads to the loss of teeth if the inflammation is not promptly cleared to terminate bone resorption and destruction of gingival tissue. Acellular dermal matrix allograft and coralline hydroxyapatite are the common materials to repair periodontal injury.

OBJECTIVE: To evaluate clinical efficacy of acellular dermal matrix allograft combined with coralline hydroxyapatite in repairing periapical tissue defects. 
METHODS: A total of 76 patients of chronic apical periodontitis were randomly divided into two groups, with
38 cases in each group. In the experimental group, periapical tissue defects were treated with acellular dermal matrix allograft and coralline hydroxyapatite. In the control group, tissue defects were not treated. All the involved patients underwent apicectomy and retrograde filling. Clinical parameters and radiographic film were recorded at 1 week, 6 months and 3 years follow-up visits to evaluate the repairing effects. 

RESULTS AND CONCLUSION: After 1 month of treatment, all acellular dermal matrix allografts survived, and the defect of gingival tissues that caused by repairing fistula had been healed. After 3 years, the repairing efficiency in the experimental group was significantly higher than that in the control group (P < 0.05). The bone defect disappeared in the experimental group at 6 months, the transmission of coralline hydroxyapatite particles was decreased, and there were some fuzzy images of compact density. This suggested that new bone was growing. The density of coralline hydroxyapatite particle got closed to normal bone tissue after 3 years, and there were transitional changes of density between coralline hydroxyapatite with normal bone. Coralline hydroxyapatite particle gradually fused with alveolar bone. Acellular dermal matrix allograft and coralline hydroxyapatite have good biological compatibility. In repairing periapical tissue defects, the application of acellular dermal matrix allograft combined with coralline hydroxyapatite is effective in clinical practice.


中国组织工程研究杂志出版内容重点:生物材料;骨生物材料; 口腔生物材料; 纳米材料; 缓释材料; 材料相容性;组织工程


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Key words:  hydroxyapatites, periapical periodontitis, periodontitis, periodontium

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