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Five‐year evaluation of the influence of keratinized mucosa on peri‐implant soft‐tissue health and stability around implants supporting full‐arch mandibular fixed prostheses

Open access
Schrott, Alexander René, Jimenez, Monik, Hwang, Jae‐Woong, Fiorellini, Joseph, Weber, Hans‐Peter·2009·Clinical Oral Implants Research

Abstract

Background: The question of the importance of keratinized mucosa around dental implants for the prevention of peri‐implant disease could not be answered in the relevant literature so far. Objective: To investigate the influence of peri‐implant keratinized mucosa on long‐term peri‐implant soft‐tissue health and stability over a period of 5 years. Material and methods: A total of 386 mandibular dental implants were placed in 73 completely edentulous patients, and subsequently restored with fixed full‐arch prostheses. At prosthesis delivery (baseline) and after 3, 6, 12, 18, 24, 36, 48 and 60 months, modified plaque index (mPlI), modified sulcus bleeding index (mBI), distance between implant shoulder and mucosal margin (DIM) and width of peri‐implant keratinized mucosa (KM) were recorded. Statistical analysis included multivariate logistic regression, multivariate ordinal logistic regression, generalized estimating equations and Bonferroni's correction. Results: Fifty‐eight patients with 307 implants completed the 5‐year study. Statistically significantly higher plaque accumulation on lingual sites (mean mPlI 0.67, SD 0.85), bleeding tendencies on lingual sites (mean mBI 0.22, SD 0.53) and larger soft‐tissue recession on buccal sites (mean DIM −0.69 mm, SD 1.11 mm) were found when the width of KM was <2 mm, compared to sites with≥2 mm of KM (mean mPlI 0.40, SD 0.68, P=0.001; mean mBI 0.13, SD 0.41, P<0.01; mean DIM −0.08 mm, SD 0.86 mm, P<0.001). The width of keratinized mucosa had no effect on bleeding tendency or plaque accumulation on buccal sites (P>0.05). Conclusion: In patients exercising good oral hygiene and receiving regular implant maintenance therapy, implants with a reduced width of <2 mm of peri‐implant keratinized mucosa were more prone to lingual plaque accumulation and bleeding as well as buccal soft‐tissue recession over a period of 5 years.

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Metadata

Authors
Schrott, A. R., Jimenez, M., Hwang, J., Fiorellini, J., & Weber, H.
Venue
Clinical Oral Implants Research
Publisher
Wiley
Published
2009-09-08
Volume
20
Issue
10
Pages
1170-1177
ISSN
  • 0905-7161 (ISSN-L)
  • 1600-0501
OpenAlex
W1978572250
Cited by
310
References
18
FWCI
9.14
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Five‐year evaluation of the influence of keratinized mucosa on peri‐implant soft‐tissue health and stability around implants supporting full‐arch mandibular fixed prostheses. https://app.cochat.ai/papers/10.1111/j.1600-0501.2009.01795.x
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Schrott, A. R., Jimenez, M., Hwang, J., Fiorellini, J., & Weber, H. (2009). Five‐year evaluation of the influence of keratinized mucosa on peri‐implant soft‐tissue health and stability around implants supporting full‐arch mandibular fixed prostheses. Clinical Oral Implants Research. https://doi.org/10.1111/j.1600-0501.2009.01795.x

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