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Efficacy of a Xanthan-based Chlorhexidine Gel in the Treatment of Peri-implant Mucositis

Efficacy of a Xanthan-based Chlorhexidine Gel in the Treatment of Peri-implant Mucositis: a Randomized Split-mouth Clinical Trial

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07047261
Enrollment
182
Registered
2025-07-02
Start date
2025-02-14
Completion date
2025-09-01
Last updated
2026-04-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Peri-implant Mucositis

Keywords

Peri-implant mucositis, adjunctive treatment, professional mechanical plaque removal, Xanthan-chlorhexidine based gel

Brief summary

The peri-implant mucositis is an inflammatory and reversible lesion that surrounds the peri-implant mucosa without loss of supporting bone, clinically characterized by bleeding on gentle probing. It has been estimated that it affects approximately 21% to 88% of individuals and 9% to 51% of implant sites, with prevalences of 47% and 29%, respectively. Experimental clinical researches show that peri-implant mucositis can be reversed if proper biofilm management is maintained. Prevention and regression of inflammation around the implant can be achieved through proper oral hygiene and an effective supportive care protocol, which may include regular clinical check-ups, radiographic assessments, oral hygiene instructions and professional mechanical plaque removal (PMPR). Therefore, adjunctive measures such as self-administration of oral rinse antiseptics (i.e. chlorhexidine) may be considered. For examples, the use of a chlorhexidine-based gel in combination with xanthan (XanCHX), in addition to PMPR has demonstrated clinical improvements in the treatment of periodontitis. The aim of the present study was to investigate the potential benefits of XanCHX gel in adjunction to PMPR in patients affected by peri-implant mucositis, promoting a complete healing of the affected tissues.

Interventions

PROCEDUREAdjunctive use of Xanthan-Chlorexidine based gel

The chlorhexidine and xanthan-based gel contains 0.5% chlorhexidine digluconate, 1% chlorhexidine dihydrochloride, and 0.5% xanthan gel. Xanthan is a polymer that creates a three-dimensional, pseudo-plastic network with water, forming a stable gel that allows a slow and prolonged release of chlorhexidine, allowing effectiveness for about 30 days. Chlorhexidine digluconate is released immediately upon application, whereas Chlorhexidine dihydrochloride is gradually delivered the following days, providing bacteriostatic and bactericidal effects for up to two weeks, helping the prevention of recolonization of treated site. The clinician cleaned and dried the implant site using compressed air and applied the XanCHX gel on the implant sites assigned to the test group, positioning the blunt needle at the bottom of the pocket and gently extruding the product while moving it out of the site. Finally, the patient was instructed not to drink or rinse for the following hour.

Sponsors

University of Turin, Italy
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 90 Years
Healthy volunteers
No

Inclusion criteria

* presence of two or more peri-implant mucositis sites (e.g. presence of bleeding and/or suppuration on probing with no bone loss evident on radiographs); * implant-supported fixed restorations inserted at least 6 months before patient enrollment

Exclusion criteria

* radiation therapy in the head and neck therapy or long-term corticosteroid treatments; * use of systemic antibiotics for more than 6 months; * diagnosis of not plaque-associated inflammatory diseases (e.g., Oral Lichen Planus); * pregnant or breastfeeding mother; * untreated peri-implantitis; * oral rehabilitation with full-arch prostheses; * allergy to chlorhexidine and/or other components contained in the gel.

Design outcomes

Primary

MeasureTime frameDescription
Bleeding on ProbingFrom baseline until the end of the study (6 months)Presence or absence of gingival bleeding within 30 seconds after probing

Secondary

MeasureTime frameDescription
Probing pocket depthFrom the baseline until the end of the study (6 months)Measure from the peri-implant mucosal margin to the base of the sulcus, applying a force of 0.2 N (20g)
Plaque indexFrom baseline until the end of the study (6 months)Presence or absence of plaque on implant surfaces
Gingival recessionFrom the baseline until the end of the study (6 months)Measure from prosthetic crown to the peri-implant mucosal margin in millimeters
Keratinized gingivaFrom the baseline until the end of the study (6 months)Measure from the peri-implant mucosal margin to oral mucosal margin in millimeters
Clinical attachment levelFrom the baseline until the end of the study (6 months)Measure, in millimeters, of the amount of gum tissue and bone attached to the root of the tooth. Specifically, it is the sum of the measurement of gingival recession and the probing depth.

Countries

Italy

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Apr 30, 2026