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CompletedNCT02904551Updated Dec 11, 2024

Gingival Augmentation Around Implants During Maintenance

An interventional study of Free gingival graft and Oral prophylaxis in Failure of Dental Implant Due to Lack of Attached Gingiva, sponsored by University of Maryland, Baltimore. Completed at 1 site in United States. Open to participants aged 18 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2024-12-11.

Sponsored by University of Maryland, Baltimore · Not applicable, Interventional, and Supportive care

Phase
Not applicable
Study type
Interventional
Enrollment
30
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

This prospective controlled randomized blind clinical study investigated 44 implants displaying lack of KG in 29 subjects. Fourteen subjects received FGGs followed by oral prophylaxis. Fifteen subjects in the control group did not receive FGGs. The width of KG, gingival recession (GR), pocket depths (PD), plaque index (PI) and gingival index (GI) were assessed at baseline, 6, 12, and 18 months. Changes in crestal bone levels, from baseline, were assessed at 18 months.

Read the detailed description

The purpose of this study was to evaluate clinical and radiographic outcomes following free gingival grafts (FGGs) around implants with limited keratinized gingiva (KG) compared to oral prophylaxis without gingival augmentation.

This prospective controlled randomized blind clinical study investigated 44 implants displaying lack of KG in 29 subjects. Fourteen subjects received FGGs followed by oral prophylaxis. Fifteen subjects in the control group did not receive FGGs. The width of KG, gingival recession (GR), pocket depths (PD), plaque index (PI) and gingival index (GI) were assessed at baseline, 6, 12, and 18 months.

There was a significant gain in KG with a reduction in GR in the FGG group compared to controls at 6, 12, and 18 months. The mean PI and GI were significantly lower for the FGG group at 12 and 18 months.

02

Conditions studied

  • Failure of Dental Implant Due to Lack of Attached Gingiva

Keywords

  • prospective study
  • free gingival graft
  • keratinized gingiva
  • dental implant
03

In context

Lead sponsor

University of Maryland, Baltimore is the lead sponsor of 696 studies on the registry; 131 are open to participants now.

Of its 91 completed or terminated interventional studies of FDA-regulated products, 63 (69%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. less than 2 mm KG present on the facial side of implant
  2. implant restoration is single unsplinted unit, and has been in function for at least 6 months with an opposing dentition.

Exclusion criteria

Exclusion Criteria:

  1. uncontrolled hypertension
  2. diabetes mellitus (DM),
  3. subjects with a history of a long-term (>6 months) use of corticosteroid
  4. subjects currently taking bisphosphonates, or with a history of taking bisphosphonates regardless of route of administration
  5. subjects on medications that cause gingival hyperplasia
  6. smokers
  7. pregnant women.
05

Study design

Phase
Not applicable
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Outcomes assessor)
Enrollment
30 participants (actual)

Study arms

  • Experimental
    Experimental

    Free gingival grafts

    Procedure: Free gingival graft

  • Active comparator
    Control

    Oral prophylaxis

    Procedure: Oral prophylaxis

Interventions

  • ProcedureFree gingival graft

    After infiltration anesthesia, a recipient bed was prepared with a horizontal split-thickness incision made with a 15 stainless steel blade at the mucogingival junction (MGJ) on the facial side of the selected implants. An intermediate thickness (0.75 mm) graft was taken from the palate. The graft was sutured with 6-0 polypropylene suture at the recipient site. Co-Pak® was applied on the recipient site. Analgesics (over-the-counter Tylenol or Ibuprofen) were prescribed for 5-7 days. PeridexTM (3M, St. Paul, MN) was prescribed for 7-10 days. No antibiotics were prescribed in relation to the surgery.

    Also known as: Experimental

  • ProcedureOral prophylaxis

    Oral prophylaxis is a regular dental cleaning. Titanium periodontal curette and superfloss were used on implant sites. Stainless steel periodontal curettes and a piezo scaler were used for natural teeth.

    Also known as: Control

06

What researchers measure

Primary outcomes

  1. Changes in the width of Keratinized Gingiva from baseline to 6, 12, 18 months

    Time frame: 6, 12, 18 months

07

Study locations

1 site
  • Advanced General Dentistry at UMB DS
    Baltimore, Maryland 21201, United States
08

References and documents

Individual participant data

Plan to share: No — IPD will not be shared. The results will be published.

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Feb 2012, a primary completion of Jun 2016 and a completion of Jun 2016. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 9, 2016
First posted
Sep 19, 2016
Start
Feb 2012
Primary completionActual
Jun 2016
CompletionActual
Jun 2016
Last update
Dec 11, 2024
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Dec 11, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02904551
Responsible party
Se-Lim Oh (Assistant Professor, University of Maryland, Baltimore) — Principal investigator
First posted
Sep 19, 2016
Start date
Feb 2012
Primary completion
Jun 2016
Completion
Jun 2016
Last update
Dec 11, 2024

Study contacts

Se-Lim Oh, DMD, MS
principal investigator · University of Maryland School of Dentistry

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Aug 2019. You cannot join it, but the record below documents what was studied.

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