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- Title
Augmentation of keratinized tissue using autogenous soft‐tissue grafts and collagen‐based soft‐tissue substitutes at teeth and dental implants: Histological findings in a pilot pre‐clinical study.
- Authors
Lim, Hyun‐Chang; Strauss, Franz J.; Shin, Seung‐Il; Jung, Ronald E.; Jung, Ui‐Won; Thoma, Daniel S.
- Abstract
Aim: To histomorphometrically assess three treatment modalities for gaining keratinized tissue (KT) at teeth and at dental implants. Materials and Methods: In five dogs, the distal roots of the mandibular second, third and fourth premolars were extracted. Dental implants were placed at the distal root areas 2 months later. After another 2 months, KT augmentation was performed at both distal (implants) and at mesial root (teeth) areas in the presence (wKT groups) or absence (w/oKT groups) of a KT band at the mucosal/gingival level. Three treatment modalities were applied randomly: apically positioned flap only (APF), free gingival grafts (FGGs) and xenogeneic collagen matrices (XCMs). A combination of the above produced six groups. Two months later, tissue sections were harvested and analysed histomorphometrically. Results: The median KT height and length were greatest at implants with FGG in both wKT (3.7 and 5.1 mm, respectively) and w/oKT groups (3.7 and 4.6 mm), and at teeth with FGG in wKT groups (3.7 and 6.1 mm) and with APF in the w/oKT groups (3.9 and 4.4 mm). The XCM and APF produced more favourable results at teeth than at implants. Conclusions: FGG was advantageous in gaining KT, especially at implants.
- Subjects
TEETH surgery; THIRD molar surgery; DENTAL implants; AUTOGRAFTS; RESEARCH funding; GINGIVA; PILOT projects; GUIDED tissue regeneration; DOGS; XENOGRAFTS; DESCRIPTIVE statistics; TISSUE scaffolds; HISTOLOGICAL techniques; ANIMAL experimentation; COLLAGEN; MANDIBLE; DENTAL extraction; DATA analysis software; CONNECTIVE tissues
- Publication
Journal of Clinical Periodontology, 2024, Vol 51, Issue 5, p665
- ISSN
0303-6979
- Publication type
Article
- DOI
10.1111/jcpe.13949