Journal List > J Korean Acad Periodontol > v.39(Suppl) > 1049811

Nam, Park, Koo, Kim, Seol, Lee, Gu, Rhyu, and Chung: The influence of membrane exposure on post-extraction dimensional change following ridge preservation technique

Abstract

Purpose

Following tooth extraction caused by severe periodontitis, alveolar ridge dimension lose their original volume. To reduce the alveolar ridge dimension, the ridge preservation technique has been introduced and tested in many clinical studies with membrane alone or membrane plus graft, achieving reduced ridge loss compared to extraction only. The aim of the present clinical study was to compare the post-extraction dimensional changes in the membrane exposure group to non-exposure group during healing period following ridge preservation technique.

Methods

Ridge preservation was performed in 44 extraction sites. After extraction, deproteinized bovine bone mineral coated with synthetic oligopeptide (Ossgen-X15®) or deproteinized bovine bone mineral (Bio-Oss®) was implanted into the socket. A collagen membrane (Bio-Gide®) was trimmed to cover the socket completely and applied to the entrance of the socket. Four clinical parameters were compared between baseline and 6 months.

Results

During healing period, membrane exposure was observed at 19 sites. At the re-entry, hard newly formed tissue were observed at the ridge preservation site. The grafted socket sites were well preserved in their volume dimension. In both groups, horizontal ridge width was reduced and vertical height was increased. There were not statistically significant differences in horizontal (-1.32 mm vs -1.00 mm) and vertical ridge change (2.24 mm vs 2.37 mm at buccal crest, 1.36 mm vs. 1.53 mm at lingual crest) between two groups.

Conclusions

The ridge preservation approach after tooth extraction effectively prevented resorption of hard tissue ridge in spite of membrane exposure during healing period.

Figures and Tables

Figure 1
Ridge preservation procedure. (A) Post-extraction view (B) Bone particles and collagen membrane (C) Primary closure (D) 6 months healing view.
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Figure 2
Membrane exposure case (A) After extraction of #25, 27 (B) Ridge preservation on #25 extraction socket (C) 2 weeks of healing after ridge preservation. Membrane was exposed (D) 2 months of healing. Exposed membrane was not observed.
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Figure 3
(A) Before extraction (B) 6 months of healing after ridge preservation (C) Implant fixture installation.
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Table 1
Distribution of Extracted Teeth
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Table 2
The Change of Ridge Dimension Following Ridge Preservation Technique
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Student T-test, *Not statistically significant difference (p>0.05)

Table 3
The Change of Ridge Dimension in the Ossgen-X15® Group
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Student T-test, *Not statistically significant difference (p>0.05)

Table 4
The Changes of Ridge Dimension in the Bio-Oss® Group
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Student T-test, *Not statistically significant difference (p>0.05)

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TOOLS
ORCID iDs

Tae-Il Kim
https://orcid.org/http://orcid.org/0000-0003-4087-8021

Yang-Jo Seol
https://orcid.org/http://orcid.org/0000-0002-2076-5452

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