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This study aims to conduct a cross-sectional study to compare the differences in clinical indices, patient-reported outcomes, and levels of inflammatory factors in peri-implant gingival crevicular fluid between sites with adequate (≥ 2 mm) and inadequate (< 2 mm) keratinized mucosa after implant restoration, in order to explore the impact of the presence of keratinized mucosa on peri-implant soft and hard tissue health.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| inadequate keratinized mucosa | peri-implant width of keratinized mucosa less than 2 mm | ||
| adequate keratinized mucosa | peri-implant width of keratinized mucosa ≥ 2 mm |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| No intervention | Other | No intervention: observational case-control study |
|
| Measure | Description | Time Frame |
|---|---|---|
| Width of Keratinized Mucosa, KMW | on the day of enrollment | |
| Plaque Index(PI) | on the day of enrollment | |
| Bleeding on Probing(BOP) | on the day of enrollment | |
| Peri-implant Probing Depth(PPD) | on the day of enrollment | |
| Marginal Bone Loss(MBL) | The X-ray examination will be completed on the day of enrollment | |
| Patient Satisfaction | visual analogue scale [VAS] 0-10,e.g., not at all satisfied to perfectly satisfied | on the day of enrollment |
| Immunological parameters in peri-implant crevicular fluids(PICF) | PICF samples were collected from buccal aspects of implants after removing all supragingival plaque. The levels of IL-1β and PGE2 in PICF were measured using a sandwich ELISA kit. | The PICF will be collected on the day of enrollment |
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Inclusion Criteria:
Exclusion Criteria:
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Patients who have completed dental implant restoration（single crown or fixed bridge restorations） for at least 6 months and undergo routine follow-up examinations.
| Name | Role | Phone | Extension | |
|---|---|---|---|---|
| Misi Si | Contact | +86 18605712858 | misi_si@zju.edu.cn |
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| The Stomatology Hospital, Zhejiang University School of Medicine | Recruiting | Hangzhou | Zhejiang | 310000 | China |
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