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Paper Information

Journal:   CELL JOURNAL (YAKHTEH)   FALL 2016 , Volume 18 , Number 3 (71); Page(s) 389 To 396.
 
Paper: 

IMMUNOHISTOLOGICAL EVALUATION OF REVASCULARIZED IMMATURE PERMANENT NECROTIC TEETH TREATED BY PLATELET-RICH PLASMA: AN ANIMAL INVESTIGATION

 
 
Author(s):  MORADI SAEID, TALATI ALI, FORGHANI MARYAM, JAFARIAN AMIR HOSSEIN, NASERI MANDANA, SHOJAEIAN SHIVA*
 
* DEPARTMENT OF ENDODONTICS, DENTAL SCHOOL, SHAHID BEHESHTI UNIVERSITY OF MEDICAL SCIENCES, TEHRAN, IRAN
 
Abstract: 

Objective: Pulp regeneration within the root canal of necrotic teeth is considered an ideal treatment to allow for continued root development and recover teeth vitality. This study aims to evaluate the inductive effect of platelet-rich plasma (PRP) on expression of angiogenesis factors and pulpal revascularization of immature necrotic teeth.
Materials and Methods: In this experimental animal study, we randomly divided 28 immature premolars from two mixed breed dogs into four groups, two experimental, negative and a positive control. Premolars in negative control group were left intact to develop normally. In the positive control and experimental groups, we removed the pulps and induced pulp necrosis, after which the chambers were sealed. Then, we applied the revascularization protocol in the experimental teeth located in the right quadrant. Two months later, the same protocol was applied to the left quadrant. The root canals were disinfected by irrigation with sodium hypochlorite (NaOCl) solution and application a triple antibiotic past. Following the induction of a blood clot (BC) inside the canal space, the coronal portion of the canals was assigned to either of two experimental groups: group 1 [BC+PRP+ mineral trioxide aggregate (MTA)], group 2 (BC+MTA). Access cavities were sealed with a Glass Ionomer. The jaws that held the teeth were processed for histologic analysis of newly formed tissue and immunohistochemical evaluation according to vascular endothelial growth factor (VEGF) and factor VIII expressions in the canals.
Results: Histological analysis demonstrated no significant difference in the formation of new vital tissue inside the root canals between groups1 (42.8%) and 2 (43.5%, P>0.05).
Based on immunohistochemical evaluation, micro-vessel density (MVD) of the granulation tissues in both groups were similar and were higher compared with the normal pulp. We observed strongly positive expressions of VEGF and factor VIII in the stromal and endothelial cells, with severe intensity after one month. Both factors showed downregulation at three months postoperative.
Conclusion: PRP could not increase the formation of new vital tissue. The immunohistochemical results showed that VEGF and factor VIII played a pivotal role in the formation of new vessels inside the root canals of immature, non-vital teeth.

 
Keyword(s): PLATELET-RICH PLASMA, REVASCULARIZATION, VASCULAR ENDOTHELIAL GROWTH FACTOR
 
 
References: 
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Citations: 
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APA: Copy

MORADI, S., & TALATI, A., & FORGHANI, M., & JAFARIAN, A., & NASERI, M., & SHOJAEIAN, S. (2016). IMMUNOHISTOLOGICAL EVALUATION OF REVASCULARIZED IMMATURE PERMANENT NECROTIC TEETH TREATED BY PLATELET-RICH PLASMA: AN ANIMAL INVESTIGATION. CELL JOURNAL (YAKHTEH), 18(3 (71)), 389-396. https://www.sid.ir/en/journal/ViewPaper.aspx?id=510760



Vancouver: Copy

MORADI SAEID, TALATI ALI, FORGHANI MARYAM, JAFARIAN AMIR HOSSEIN, NASERI MANDANA, SHOJAEIAN SHIVA. IMMUNOHISTOLOGICAL EVALUATION OF REVASCULARIZED IMMATURE PERMANENT NECROTIC TEETH TREATED BY PLATELET-RICH PLASMA: AN ANIMAL INVESTIGATION. CELL JOURNAL (YAKHTEH). 2016 [cited 2021July27];18(3 (71)):389-396. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=510760



IEEE: Copy

MORADI, S., TALATI, A., FORGHANI, M., JAFARIAN, A., NASERI, M., SHOJAEIAN, S., 2016. IMMUNOHISTOLOGICAL EVALUATION OF REVASCULARIZED IMMATURE PERMANENT NECROTIC TEETH TREATED BY PLATELET-RICH PLASMA: AN ANIMAL INVESTIGATION. CELL JOURNAL (YAKHTEH), [online] 18(3 (71)), pp.389-396. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=510760.



 
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