Does Apical Papilla Survive and Develop in Apical Periodontitis Presence after Regenerative Endodontic Procedures?

Regenerative endodontic procedures (REPs) have emerged as a treatment option for immature necrotic teeth to allow the reestablishment of a newly formed vital tissue and enable continued root development. The apical papilla stem cells (SCAPs) play an important role in physiologic root development and...

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Main Authors: Paulo J. Palma, João Martins, Patrícia Diogo, Diana Sequeira, João Carlos Ramos, Aníbal Diogenes, João Miguel Santos
Format: Article
Language:English
Published: MDPI AG 2019-09-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/9/19/3942
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author Paulo J. Palma
João Martins
Patrícia Diogo
Diana Sequeira
João Carlos Ramos
Aníbal Diogenes
João Miguel Santos
author_facet Paulo J. Palma
João Martins
Patrícia Diogo
Diana Sequeira
João Carlos Ramos
Aníbal Diogenes
João Miguel Santos
author_sort Paulo J. Palma
collection DOAJ
description Regenerative endodontic procedures (REPs) have emerged as a treatment option for immature necrotic teeth to allow the reestablishment of a newly formed vital tissue and enable continued root development. The apical papilla stem cells (SCAPs) play an important role in physiologic root development and may also contribute to further root development during REPs. The goal of these case reports is to show evidence of the apical papilla survival and development, in human teeth with apical periodontitis, after REPs, with 5-year clinical and radiographic follow-up. In the first case, an 11-year-old girl with acute apical abscess of tooth 15 was referred for a REP. Treatment was performed with an intracanal medication followed by induction of a blood clot and a Mineral Trioxide Aggregate (MTA) cervical barrier. The 5-year follow-up showed an appreciable increase in root length as well as root canal thickness. In case 2, a 16-year-old girl was referred for endodontic treatment of tooth 21. The parents of the patient recalled a previous dental trauma (no specified on the patient records) on tooth 21 at age 7. The dental history reports a previous endodontic treatment failure and presence of a long-standing sinus tract. A mineralized tissue beyond the root apical portion could be seen at the preoperative X-ray. Nonsurgical root canal retreatment with an apical barrier was suggested as the treatment plan and accepted by the patient. After 2 weeks, the patient was recalled for a follow-up appointment presenting spontaneous pain, swelling, and sinus tract. Apical surgery was performed. Histopathological assessment of the apical root fragment collected showed the presence of dentin, cementum and pulp tissue, including odontoblasts. The 5-year follow-up depicted complete apical healing. The present case reports support survival and continued potential differentiation of the apical papilla after endodontic infection.
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spelling doaj.art-cfc740f46e8a462b86a2f490a3dcaa792022-12-22T02:02:27ZengMDPI AGApplied Sciences2076-34172019-09-01919394210.3390/app9193942app9193942Does Apical Papilla Survive and Develop in Apical Periodontitis Presence after Regenerative Endodontic Procedures?Paulo J. Palma0João Martins1Patrícia Diogo2Diana Sequeira3João Carlos Ramos4Aníbal Diogenes5João Miguel Santos6Institute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, PortugalInstitute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, PortugalInstitute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, PortugalInstitute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, PortugalInstitute of Operative Dentistry, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, PortugalDepartment of Endodontics, University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USAInstitute of Endodontics, Faculty of Medicine, University of Coimbra, 3000-075 Coimbra, PortugalRegenerative endodontic procedures (REPs) have emerged as a treatment option for immature necrotic teeth to allow the reestablishment of a newly formed vital tissue and enable continued root development. The apical papilla stem cells (SCAPs) play an important role in physiologic root development and may also contribute to further root development during REPs. The goal of these case reports is to show evidence of the apical papilla survival and development, in human teeth with apical periodontitis, after REPs, with 5-year clinical and radiographic follow-up. In the first case, an 11-year-old girl with acute apical abscess of tooth 15 was referred for a REP. Treatment was performed with an intracanal medication followed by induction of a blood clot and a Mineral Trioxide Aggregate (MTA) cervical barrier. The 5-year follow-up showed an appreciable increase in root length as well as root canal thickness. In case 2, a 16-year-old girl was referred for endodontic treatment of tooth 21. The parents of the patient recalled a previous dental trauma (no specified on the patient records) on tooth 21 at age 7. The dental history reports a previous endodontic treatment failure and presence of a long-standing sinus tract. A mineralized tissue beyond the root apical portion could be seen at the preoperative X-ray. Nonsurgical root canal retreatment with an apical barrier was suggested as the treatment plan and accepted by the patient. After 2 weeks, the patient was recalled for a follow-up appointment presenting spontaneous pain, swelling, and sinus tract. Apical surgery was performed. Histopathological assessment of the apical root fragment collected showed the presence of dentin, cementum and pulp tissue, including odontoblasts. The 5-year follow-up depicted complete apical healing. The present case reports support survival and continued potential differentiation of the apical papilla after endodontic infection.https://www.mdpi.com/2076-3417/9/19/3942apical papillaapical papilla stem cells (SCAPs)apical periodontitisimmature permanent toothhistologyregenerative endodonticsroot canaltissue engineeringpulp regeneration
spellingShingle Paulo J. Palma
João Martins
Patrícia Diogo
Diana Sequeira
João Carlos Ramos
Aníbal Diogenes
João Miguel Santos
Does Apical Papilla Survive and Develop in Apical Periodontitis Presence after Regenerative Endodontic Procedures?
Applied Sciences
apical papilla
apical papilla stem cells (SCAPs)
apical periodontitis
immature permanent tooth
histology
regenerative endodontics
root canal
tissue engineering
pulp regeneration
title Does Apical Papilla Survive and Develop in Apical Periodontitis Presence after Regenerative Endodontic Procedures?
title_full Does Apical Papilla Survive and Develop in Apical Periodontitis Presence after Regenerative Endodontic Procedures?
title_fullStr Does Apical Papilla Survive and Develop in Apical Periodontitis Presence after Regenerative Endodontic Procedures?
title_full_unstemmed Does Apical Papilla Survive and Develop in Apical Periodontitis Presence after Regenerative Endodontic Procedures?
title_short Does Apical Papilla Survive and Develop in Apical Periodontitis Presence after Regenerative Endodontic Procedures?
title_sort does apical papilla survive and develop in apical periodontitis presence after regenerative endodontic procedures
topic apical papilla
apical papilla stem cells (SCAPs)
apical periodontitis
immature permanent tooth
histology
regenerative endodontics
root canal
tissue engineering
pulp regeneration
url https://www.mdpi.com/2076-3417/9/19/3942
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