Insufficient width of the peri-implant keratinized gingiva
Conditions
Interventions
test group:a partial-thickness modified apically positioned flap and gelatin-polycaprolactone biohybrid polymers membrane
control group:a partial-thickness modified apically positioned flap and free gingival graft
Sponsors
Peking University School and Hospital of Stomatology
Eligibility
Sex/Gender
All
Age
28 Years to 80 Years
Inclusion criteria
Inclusion criteria: (1) Adult patients: aged 18 to 80 years; (2) Stable implant-supported restoration in the mandibular posterior region, with no complications such as implant failure or loosening; (3) Insufficient keratinized gingival width (less than 4mm but greater than 2mm) following Phase I implant surgery and prior to Phase II surgery (bone grafting optional): measured using periodontal probing as the total width of keratinized gingiva at the crest of the alveolar ridge; (4) Systemically healthy patients with fasting blood glucose <=6.11 mmol/L; (5) Non-smokers or smokers limited to <=10 cigarettes/day; (6) Periodontally healthy with a plaque index <20% for the entire dentition.
Exclusion criteria
Exclusion criteria: (1) Patients with systemic diseases such as diabetes, osteoporosis, or hepatitis; (2) Patients with physical or mental conditions affecting daily oral hygiene maintenance (e.g., bruxism, Parkinson's disease); (3) Pregnant women, breastfeeding individuals, or those planning pregnancy. (4) Patients taking steroids, antiepileptic drugs, medications causing drug-induced gingival hyperplasia, bisphosphonates, or other drugs affecting bone metabolism. (5) Patients unable to comply with this study. (6) Sites with reduced vertical bone height in the posterior region, insufficient gingival-buccal sulcus depth, or less than 5mm apical displacement of the flap during surgery will be excluded.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Increase in keratinized gingiva width Six months after restoration; | — |
Secondary
| Measure | Time frame |
|---|---|
| Duration of surgery;Increase in keratinized gingiva width immediately after surgery;Patient satisfaction;Patient Anxiety Index;Increase in keratinized gingiva width Six weeks after surgery;Increase in keratinized gingiva width immediately after surgery;Enhance soft tissue color;Enhance soft tissue texture;Plaque index six months after restoration;bleeding index six months after restoration;Probing depth six months after restoration;gingival recession six months after restoration;Thickness before surgery;Thickness six months after restoration;marginal bone loss six months after restoration; | — |
Countries
China
Contacts
Public ContactJia Pingyi
Peking University School and Hospital of Stomatology
Outcome results
None listed