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Immediate implant placement in conjunction with guided bone regeneration and/or connective tissue grafts: an experimental study in canines
PURPOSE: This study was conducted to assess the effect of hard and/or soft tissue grafting on immediate implants in a preclinical model. METHODS: In 5 mongrel dogs, the distal roots of P2 and P3 were extracted from the maxilla (4 sites in each animal), and immediate implant placement was performed....
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Korean Academy of Periodontology
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9064777/ https://www.ncbi.nlm.nih.gov/pubmed/35505577 http://dx.doi.org/10.5051/jpis.2104040202 |
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author | Lim, Hyun-Chang Paeng, Kyeong-Won Kim, Myong Ji Jung, Ronald E. Hämmerle, Christoph HF. Jung, Ui-Won Thoma, Daniel S. |
author_facet | Lim, Hyun-Chang Paeng, Kyeong-Won Kim, Myong Ji Jung, Ronald E. Hämmerle, Christoph HF. Jung, Ui-Won Thoma, Daniel S. |
author_sort | Lim, Hyun-Chang |
collection | PubMed |
description | PURPOSE: This study was conducted to assess the effect of hard and/or soft tissue grafting on immediate implants in a preclinical model. METHODS: In 5 mongrel dogs, the distal roots of P2 and P3 were extracted from the maxilla (4 sites in each animal), and immediate implant placement was performed. Each site was randomly assigned to 1 of the following 4 groups: i) gap filling with guided bone regeneration (the GBR group), ii) subepithelial connective tissue grafting (the SCTG group), iii) GBR and SCTG (the GBR/SCTG group), and iv) no further treatment (control). Non-submerged healing was provided for 4 months. Histological and histomorphometric analyses were performed. RESULTS: Peri-implant tissue height and thickness favored the SCTG group (height of peri-implant mucosa: 1.14 mm; tissue thickness at the implant shoulder and ±1 mm from the shoulder: 1.14 mm, 0.78 mm, and 1.57 mm, respectively; median value) over the other groups. Bone grafting was not effective at the level of the implant shoulder and on the coronal level of the shoulder. In addition, simultaneous soft and hard tissue augmentation (the GBR/SCTG group) led to a less favorable tissue contour compared to GBR or SCTG alone (height of peri-implant mucosa: 3.06 mm; thickness of peri-implant mucosa at the implant shoulder and ±1 mm from the shoulder: 0.72 mm, 0.3 mm, and 1.09 mm, respectively). CONCLUSION: SCTG tended to have positive effects on the thickness and height of the peri-implant mucosa in immediate implant placement. However, simultaneous soft and hard tissue augmentation might not allow a satisfactory tissue contour in cases where the relationship between implant position and neighboring bone housing is unfavorable. |
format | Online Article Text |
id | pubmed-9064777 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Korean Academy of Periodontology |
record_format | MEDLINE/PubMed |
spelling | pubmed-90647772022-05-11 Immediate implant placement in conjunction with guided bone regeneration and/or connective tissue grafts: an experimental study in canines Lim, Hyun-Chang Paeng, Kyeong-Won Kim, Myong Ji Jung, Ronald E. Hämmerle, Christoph HF. Jung, Ui-Won Thoma, Daniel S. J Periodontal Implant Sci Research Article PURPOSE: This study was conducted to assess the effect of hard and/or soft tissue grafting on immediate implants in a preclinical model. METHODS: In 5 mongrel dogs, the distal roots of P2 and P3 were extracted from the maxilla (4 sites in each animal), and immediate implant placement was performed. Each site was randomly assigned to 1 of the following 4 groups: i) gap filling with guided bone regeneration (the GBR group), ii) subepithelial connective tissue grafting (the SCTG group), iii) GBR and SCTG (the GBR/SCTG group), and iv) no further treatment (control). Non-submerged healing was provided for 4 months. Histological and histomorphometric analyses were performed. RESULTS: Peri-implant tissue height and thickness favored the SCTG group (height of peri-implant mucosa: 1.14 mm; tissue thickness at the implant shoulder and ±1 mm from the shoulder: 1.14 mm, 0.78 mm, and 1.57 mm, respectively; median value) over the other groups. Bone grafting was not effective at the level of the implant shoulder and on the coronal level of the shoulder. In addition, simultaneous soft and hard tissue augmentation (the GBR/SCTG group) led to a less favorable tissue contour compared to GBR or SCTG alone (height of peri-implant mucosa: 3.06 mm; thickness of peri-implant mucosa at the implant shoulder and ±1 mm from the shoulder: 0.72 mm, 0.3 mm, and 1.09 mm, respectively). CONCLUSION: SCTG tended to have positive effects on the thickness and height of the peri-implant mucosa in immediate implant placement. However, simultaneous soft and hard tissue augmentation might not allow a satisfactory tissue contour in cases where the relationship between implant position and neighboring bone housing is unfavorable. Korean Academy of Periodontology 2021-11-23 /pmc/articles/PMC9064777/ /pubmed/35505577 http://dx.doi.org/10.5051/jpis.2104040202 Text en Copyright © 2022. Korean Academy of Periodontology https://creativecommons.org/licenses/by-nc/4.0/This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (https://creativecommons.org/licenses/by-nc/4.0/). |
spellingShingle | Research Article Lim, Hyun-Chang Paeng, Kyeong-Won Kim, Myong Ji Jung, Ronald E. Hämmerle, Christoph HF. Jung, Ui-Won Thoma, Daniel S. Immediate implant placement in conjunction with guided bone regeneration and/or connective tissue grafts: an experimental study in canines |
title | Immediate implant placement in conjunction with guided bone regeneration and/or connective tissue grafts: an experimental study in canines |
title_full | Immediate implant placement in conjunction with guided bone regeneration and/or connective tissue grafts: an experimental study in canines |
title_fullStr | Immediate implant placement in conjunction with guided bone regeneration and/or connective tissue grafts: an experimental study in canines |
title_full_unstemmed | Immediate implant placement in conjunction with guided bone regeneration and/or connective tissue grafts: an experimental study in canines |
title_short | Immediate implant placement in conjunction with guided bone regeneration and/or connective tissue grafts: an experimental study in canines |
title_sort | immediate implant placement in conjunction with guided bone regeneration and/or connective tissue grafts: an experimental study in canines |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9064777/ https://www.ncbi.nlm.nih.gov/pubmed/35505577 http://dx.doi.org/10.5051/jpis.2104040202 |
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