LL-37 · research summary

Dual-Function Antimicrobial Peptides as a Prospective Strategy Against Peri-Implantitis: Bridging Cutaneous Wound Healing and the Peri-Implant Soft-Tissue Seal.

Medicina (Kaunas, Lithuania) · 2026. Summary drawn from the study's full text. Each statement is followed by the exact sentence it comes from. This is a research summary, not medical advice.

Study type

Narrative review
“This article is a narrative review rather than a systematic one.”

Subjects

Antimicrobial peptides (AMPs) functionalized on titanium and zirconia implant surfaces
“This review examines AMP-functionalized titanium as a prospective strategy against peri-implantitis through a dermatological lens, drawing on the established roles of the cathelicidin LL-37 and the β-defensins in cutaneous and oral wound healing.”

Sample size

58 sources retained for synthesis
“after title/abstract assessment for relevance to the antibacterial or host-modulatory roles of peptides at implant or epithelial surfaces, 58 sources were retained for the synthesis”

Duration

Literature search covered database inception to February 2026
“The literature was identified through searches of PubMed/MEDLINE and Scopus for English-language publications up to early 2026, combining terms for antimicrobial and host-defense peptides (including LL-37, defensins, GL13K, KR-12, and HHC-36) with terms for peri-implantitis, dental implants, titanium surface functionalization, biofilm, soft-tissue seal, and osseointegration; the reference lists of key papers were screened for additional sources, covering the period from database inception to February 2026.”

Reported findings

Preclinical evidence indicates AMP-functionalized surfaces provide antibacterial activity while preserving osseointegration
“Taken as a whole, the available preclinical evidence indicates that antimicrobial peptide-functionalized titanium surfaces provide simultaneous antibacterial activity and preservation of osteogenic potential, while several in vivo studies have demonstrated maintenance or enhancement of osseointegration in animal models [25,39,42,43].”
Host-defense peptides can simultaneously suppress biofilm and promote soft-tissue seal formation in animal models
“Most tellingly, in a rat model of immediate post-extraction implantation, the LL-37-functionalized surface produced, after four weeks, a peri-implant epithelial structure resembling the junctional epithelium of a natural tooth and a soft-tissue seal that resisted the penetration of a tracer molecule [44].”
The evidence is predominantly preclinical and does not yet demonstrate clinical prevention in patients
“The evidence assembled here, however, is predominantly preclinical, derived from in vitro and animal studies, and does not yet demonstrate clinical prevention of peri-implantitis in patients.”

Limitations stated by the authors

Evidence is predominantly preclinical, with translational barriers including stability, cytotoxicity, cost, regulation, and absence of human trials
“The evidence assembled here, however, is predominantly preclinical, derived from in vitro and animal studies, and does not yet demonstrate clinical prevention of peri-implantitis in patients.”

Source: PubMed 42654360 · DOI 10.3390/medicina62081463 · all study summaries

Subjects

Antimicrobial peptides (AMPs) functionalized on titanium and zirconia implant surfaces

“This review examines AMP-functionalized titanium as a prospective strategy against peri-implantitis through a dermatological lens, drawing on the established roles of the cathelicidin LL-37 and the β-defensins in cutaneous and oral wound healing.”

Duration

Literature search covered database inception to February 2026

“The literature was identified through searches of PubMed/MEDLINE and Scopus for English-language publications up to early 2026, combining terms for antimicrobial and host-defense peptides (including LL-37, defensins, GL13K, KR-12, and HHC-36) with terms for peri-implantitis, dental implants, titanium surface functionalization, biofilm, soft-tissue seal, and osseointegration; the reference lists of key papers were screened for additional sources, covering the period from database inception to February 2026.”

Reported findings

Preclinical evidence indicates AMP-functionalized surfaces provide antibacterial activity while preserving osseointegration

“Taken as a whole, the available preclinical evidence indicates that antimicrobial peptide-functionalized titanium surfaces provide simultaneous antibacterial activity and preservation of osteogenic potential, while several in vivo studies have demonstrated maintenance or enhancement of osseointegration in animal models [25,39,42,43].”

Host-defense peptides can simultaneously suppress biofilm and promote soft-tissue seal formation in animal models

“Most tellingly, in a rat model of immediate post-extraction implantation, the LL-37-functionalized surface produced, after four weeks, a peri-implant epithelial structure resembling the junctional epithelium of a natural tooth and a soft-tissue seal that resisted the penetration of a tracer molecule [44].”

The evidence is predominantly preclinical and does not yet demonstrate clinical prevention in patients

“The evidence assembled here, however, is predominantly preclinical, derived from in vitro and animal studies, and does not yet demonstrate clinical prevention of peri-implantitis in patients.”

Limitations stated by the authors

Evidence is predominantly preclinical, with translational barriers including stability, cytotoxicity, cost, regulation, and absence of human trials

“The evidence assembled here, however, is predominantly preclinical, derived from in vitro and animal studies, and does not yet demonstrate clinical prevention of peri-implantitis in patients.”