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Alveolar Ridge Regeneration With Open Versus Closed Healing in Damaged Extraction Sockets: A Preclinical In Vivo
Jae-Won Choi1, Jin-Young Park1, Jae-Kook Cha1
1Department of Periodontology, Research Institute of Periodontal Regeneration, Yonsei University College of Dentistry, Seoul, South Korea.
Clinical Oral Implants Research
|October 28, 2024
Summary
Alveolar ridge preservation (ARP) using open healing resulted in similar bone dimensions and new bone formation compared to closed healing. Open healing led to less buccal bone crest reduction and wider keratinized tissue.
Area of Science:
- Dental surgery
- Periodontology
- Regenerative medicine
Background:
- Alveolar ridge preservation (ARP) is crucial for maintaining bone dimensions after tooth extraction.
- Damaged extraction sockets present unique challenges for ARP procedures.
- Comparing open versus closed healing is essential for optimizing ARP outcomes.
Purpose of the Study:
- To compare open versus closed healing of soft and hard tissue following alveolar ridge preservation (ARP) in damaged extraction sockets.
- To evaluate clinical and histological parameters of both healing approaches.
Main Methods:
- ARP was performed in mongrel dogs using collagenated deproteinized bovine bone mineral (cDBBM) and a resorbable non-cross-linked collagen membrane (NCCM).
- Extraction sockets with damaged buccal walls were assigned to either open or closed healing groups.
- Clinical wound epithelization, keratinized tissue dimensions, augmented ridge dimensions, and new bone formation were assessed.
Main Results:
- Open healing showed faster wound epithelization and maintained the mucogingival junction more apically.
- No significant differences in augmented ridge dimensions or new bone formation were observed between groups.
- Membrane resorption was more pronounced in the crestal region with open healing.
Conclusions:
- Both open and closed healing approaches for ARP in damaged sockets yield comparable ridge dimensions and new bone formation.
- Open healing demonstrated advantages in preserving the buccal bone crest and increasing keratinized tissue width.
- These findings suggest open healing may be beneficial for managing damaged extraction sockets.
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