K05.2 K05.3
Conditions
Interventions
Group 1: Recession coverage by means of the envelope technique according to Raetzke (removal of connective tissue grafts from the hard palate and transplantation into a recipient site under local anes
part of the graft remains uncovered)
The recession and the transplant are digitally recorded pre- and intra-operatively with an intraoral scanner. After 6, 12, 60 and 120 months, an assessment is made as to whether the root surface was a
Sponsors
Poliklinik für Parodontologie, Zentrum für Zahn-, Mund- und Kieferheilkunde der Johann Wolfgang-Goethe Universität Frankfurt am Main
Eligibility
Sex/Gender
All
Age
18 Years to No maximum
Inclusion criteria
Inclusion criteria: - written informed consent - non-smokers - no untreated periodontal disease - Plaque and gingival index = 25% (Ainamo and Bay, 1975, O'Leary et al., 1972) - no intake of drugs that affect periodontal tissue/healing (e.g. calcium channel blockers, phenytoins, cyclosporins) - no existing contraindication for periodontal surgery - at least one single RT1 recession (Cortellini and Bissada, 2018) with a clearly identifiable, natural enamel-cement junction (tooth must be unrestored)
Exclusion criteria
Exclusion criteria: - pregnancy - presence of systemic diseases that have been shown to lead to wound healing disorders (e.g. diabetes mellitus, malignancies, HIV, radiation, immunosuppression)
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Complete root coverage (dichotomous): For this purpose, the preoperative intraoral scan is superimposed with the corresponding intraoral scan after 6, 12, 60 and 120 months using analysis software. If the natural enamel-cement junction cannot be identified after the two scans have been superimposed, the root is considered to be completely covered. | — |
Secondary
| Measure | Time frame |
|---|---|
| Ratio from graft and recession area (area ratio, metric): For this purpose, the respective area is determined using analysis software by means of an intraoperative scan of the transplant or a preoperative scan of the recession and the corresponding quotient [transplant area/recession area] is calculated. Absolute (mm) and relative (%) root coverage (metric): For this purpose, the preoperative intraoral scan is superimposed with the corresponding intraoral scan after 6, 12, 60 and 120 months using analysis software. The distance between the lowest point of the gingival margin preoperatively to the lowest point of the gingival margin postoperatively is considered to be absolute root coverage. Relative root coverage is the ratio of absolute root coverage multiplied by 100 to the preoperative depth of recession. Probing depths (mm) and bleeding on probing (BOP; dichotomous): Probing depths are recorded to an accuracy of 0.5 mm, as is the BOP, with a simple periodontal probe at 6 sites per test tooth. The probing depth is defined as the distance from the bottom of the pocket to the lowest point of the gingival margin. If bleeding occurs during one of the probes, this point is rated as BOP positive. Width of the keratinized gingiva (mm, metric): For this purpose, the respective intraoral scan is measured using analysis software from the lowest point of the gingival margin in the course of the tooth axis to the mucogingival junction. Plaque and gingival index (categorical): The plaque index is collected using a periodontal probe at 6 points on the operated tooth. For this purpose, the corresponding 6 sites per tooth are assessed visually using a given coding (Loe, 1967). The gingival index is also surveyed with a periodontal probe at 6 sites on the operated tooth. For this purpose, the corresponding 6 sites per tooth in the area of ??the gingival margin are carefully smeared with the periodontal probe at a 45 ° angle and then assessed using a given coding (Lo | — |
Countries
Germany
Contacts
Public ContactHari Petsos
Poliklinik für Parodontologie, Zentrum für Zahn-, Mund- und Kieferheilkunde der Johann Wolfgang-Goethe Universität Frankfurt am Main
Outcome results
None listed