Header

UZH-Logo

Maintenance Infos

Augmentation of keratinized tissue at tooth and implant sites by using autogenous grafts and collagen-based soft-tissue substitutes


Thoma, Daniel S; Lim, Hyun-Chang; Paeng, Kyeong-Won; Kim, Myong Ji; Jung, Ronald E; Hämmerle, Christoph H F; Jung, Ui-Won (2020). Augmentation of keratinized tissue at tooth and implant sites by using autogenous grafts and collagen-based soft-tissue substitutes. Journal of Clinical Periodontology, 47(1):64-71.

Abstract

AIM
To investigate the effect of three treatment modalities on the gain of keratinized tissue (KT) at tooth and implant sites in dogs.
MATERIALS AND METHODS
In five dogs, the distal roots of the mandibular second, third and fourth premolars were extracted, while the mesial roots were maintained. After 2 months of healing, implants were placed with KT excision. After another 2 months of healing, free gingival grafts, collagen-based matrices and apically positioned flap only were applied. The height of KT was measured during implant placement, immediately before soft-tissue grafting and after 10, 30 and 60 days.
RESULTS
Two months after KT excision, spontaneous KT regrowth was greater at tooth sites than at implant sites (median, 2.0 mm vs. 1.1 mm). The outcomes of soft-tissue grafting at implant sites favoured the free gingival graft treatment, with a greater final median height (5.0-5.5 mm) and increase in KT (4.0-4.2 mm). Locations of the recipient sites significantly influenced KT regeneration at both tooth and implant sites.
CONCLUSIONS
At implant sites, the free gingival graft treatment led to higher KT regeneration. At tooth sites, however, the differences between the three treatment modalities seemed clinically irrelevant.

Abstract

AIM
To investigate the effect of three treatment modalities on the gain of keratinized tissue (KT) at tooth and implant sites in dogs.
MATERIALS AND METHODS
In five dogs, the distal roots of the mandibular second, third and fourth premolars were extracted, while the mesial roots were maintained. After 2 months of healing, implants were placed with KT excision. After another 2 months of healing, free gingival grafts, collagen-based matrices and apically positioned flap only were applied. The height of KT was measured during implant placement, immediately before soft-tissue grafting and after 10, 30 and 60 days.
RESULTS
Two months after KT excision, spontaneous KT regrowth was greater at tooth sites than at implant sites (median, 2.0 mm vs. 1.1 mm). The outcomes of soft-tissue grafting at implant sites favoured the free gingival graft treatment, with a greater final median height (5.0-5.5 mm) and increase in KT (4.0-4.2 mm). Locations of the recipient sites significantly influenced KT regeneration at both tooth and implant sites.
CONCLUSIONS
At implant sites, the free gingival graft treatment led to higher KT regeneration. At tooth sites, however, the differences between the three treatment modalities seemed clinically irrelevant.

Statistics

Citations

Dimensions.ai Metrics
1 citation in Web of Science®
2 citations in Scopus®
Google Scholar™

Altmetrics

Downloads

29 downloads since deposited on 04 Dec 2019
25 downloads since 12 months
Detailed statistics

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > Center for Dental Medicine > Clinic of Reconstructive Dentistry
Dewey Decimal Classification:610 Medicine & health
Scopus Subject Areas:Health Sciences > Periodontics
Language:English
Date:1 January 2020
Deposited On:04 Dec 2019 13:54
Last Modified:13 Sep 2020 00:00
Publisher:Wiley-Blackwell Publishing, Inc.
ISSN:0303-6979
OA Status:Hybrid
Publisher DOI:https://doi.org/10.1111/jcpe.13194
PubMed ID:31518443

Download

Hybrid Open Access

Download PDF  'Augmentation of keratinized tissue at tooth and implant sites by using autogenous grafts and collagen-based soft-tissue substitutes'.
Preview
Content: Accepted Version
Filetype: PDF
Size: 4MB
View at publisher