Hyaluronic acid (HY) is used in dentistry to improve wound healing after oral and periodontal surgical interventions. After the application of HY, a positive effect on the wound healing of extraction sockets and periodontal defects has been described. The removal of a mandibular wisdom tooth (LM3) often leads to remaining residual defects with increased probing depths distal to the second molar. To date, the influence of HY on periodontal healing of the distal aspect of the second molar after removal of the LM3 has not yet been investigated. Accordingly, the aim of this double-blind, controlled and randomized clinical study is the influence of the application of HY Gel or HY Gel in combination with an absorbable collagen sponge on the periodontal healing of the second molar after surgical removal of the LM3 compared to the standard procedure (blood clot). A total of 102 patients with an impacted LM3 and a pre-existing bone defect of at least 5 mm distal to the second molar will be included. In the HY test group (n = 34), HY gel is applied to the LM3 extraction socket, and in the HY + C test group (n = 34) HY gel and an absorbable collagen sponge, while the control group (n = 34) does not receive any additional treatment. Patients are followed up for 12 months and the presence of an increased probing depth (≥ 5mm) on the distal side of the second molar is defined as the main parameter. A more stable blood clot and thus improved wound healing including periodontal healing is expected through the use of HY.
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Probing depth at adjacent second molar
Timeframe: 1 year