To evaluate a cross-shaped incision technique to thick-gingiva and thin-gingiva patients treated with implant-supported fixed prosthesis.
Objective: To evaluate a cross-shaped incision technique to thick-gingiva and thin-gingiva patients treated with implant-supported fixed prosthesis. Methods and Materials: 55 patients received cross-shaped incision were assigned into thick-gingiva group (29 cases) and thin-gingiva group (26 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.
Study Type
OBSERVATIONAL
Enrollment
55
The biotype of gingival was also determined by periodontal probe.
West China Hospital of Stomatology
Chengdu, Sichuan, China
papilla height
Presence/absence of papilla height was assessed visually
Time frame: Between June 2018 and June 2020.
Modified Plaque Index (mPI)
plaque accumulation around the marginal peri-implant tissue was assessed
Time frame: Between June 2018 and June 2020.
Modified Sulcus Bleeding Index
the bleeding tendency of the marginal peri-implant tissue was evaluated
Time frame: Between June 2018 and June 2020.
Probing Depth (PD, in millimeters)
PD was assessed at the mid-buccal, mid-oral, mesial and distal aspects of each implant with a standard periodontal probe, and final value was determined by the average of four aspects
Time frame: Between June 2018 and June 2020.
Gingival margin level
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
Time frame: Between June 2018 and June 2020.
first bone-implant contact (fBIC) and implant shoulder (IS)
the landmarks of first bone-implant contact (fBIC) and implant shoulder (IS) were used for measurements. 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.
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Time frame: Between June 2018 and June 2020.