Radiographic Evaluation of a Star-shaped Incision Technique
- Conditions
- Clinical and Radiographic EffectImplantThick-gingivaThin-gingiva
- Interventions
- Diagnostic Test: The biotype of gingiva
- Registration Number
- NCT05190614
- Lead Sponsor
- Wen Luo
- Brief Summary
To evaluate a star-shaped incision technique to thick-gingiva and thingingiva patients treated with implant-supported fixed prosthesis. The star-shaped incision would be an effective and simple method to reconstruct gingival papillae and avoid the gingival recession in thick-gingiva patients treated with implant-supported fixed prosthesis, and it is worthy of clinical extend.
- Detailed Description
Objective: To evaluate a star-shaped incision technique to thick-gingiva and thin-gingiva patients treated with implant-supported fixed prosthesis. Methods and Materials: 24 patients received cross-shaped incision were assigned into thick-gingiva group (16 cases) and thin-gingiva group (8 cases). Follow-up examination was carried out 3 and 12 months after final restoration. Clinical and radiographic evaluation including gingival papilla height, modified plaque index, modified sulcus bleeding index, periodontal depth, and crestal marginal bone level were utilized.
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 24
Not provided
Not provided
Study & Design
- Study Type
- OBSERVATIONAL
- Study Design
- Not specified
- Arm && Interventions
Group Intervention Description thin-gingiva group The biotype of gingiva After the insertion of the probe into the facial aspect of the sulcus through the gingival margin, the simple visual method is based on the transparency of the periodontal probe through the gingival margin while probing the buccal sulcus at the midfacial aspect of the tooth. When the outline of the underlying periodontal probe can be seen through the gingival, the gingival phenotype is considered thin.
- Primary Outcome Measures
Name Time Method Papilla height Between June 2019 and June 2021 Presence/absence of papilla height was assessed visually according to the papilla index proposed by Jemt
Modified Plaque Index (mPI) Between June 2019 and June 2021 plaque accumulation around the marginal peri-implant tissue was assessed by the criteria of mPI
Modified Sulcus Bleeding Index (mBI) Between June 2019 and June 2021 the bleeding tendency of the marginal peri-implant tissue was evaluated using mBI
Probing Depth (PD, mm) Between June 2019 and June 2021 PD was assessed at the mid-buccal, mid-oral, mesial and distal aspects of the buccal surfaces of each implant with a standard periodontal probe, and final value was determined by the average of four aspects.
Gingival margin level (GML) Between June 2019 and June 2021 gingival margin level was assessed by calculating the vertical distance between the most apical point of gingival margin at the buccal aspect of the crown and line connecting the peak of the adjacent mesial and distal natural teeth (PMD)
The landmarks of first bone-implant contact (fBIC) and implant shoulder (IS) Between June 2019 and June 2021 fBIC-IS was defined as the vertical distance the first bone-implant contact to implant shoulder, and the distance was assessed at the mesial and distal aspect of implant, respectively. When the marginal crestal bone was located coronal to the IS, a positive (+) value was given, where a negative (-) value when located apically to the IS, the value was deemed as zero when IS and fBIC coincided. The crestal bone level at the time of impression taking was regarded as baseline. The known implant length was used for the calibration of dimensional distortion in the radiograph (the length of implant was 10 mm).
- Secondary Outcome Measures
Name Time Method
Trial Locations
- Locations (1)
West China Hospital of Stomatology
🇨🇳Chengdu, Sichuan, China