Abstract
In this study, we investigate the combined application of concentrated growth factor (CGF) and Bio-Oss (BO) for the treatment of periodontal bone defect (BD) after extraction of impacted wisdom teeth. Firstly, we assess the osteogenic properties of CGF in periodontal ligament stem cells (PDLSCs). The concentration-dependent effect of CGF on enhancing the activity of PDLSCs has been demonstrated. Furthermore, CGF effectively promotes differentiation and enhances the osteogenic function of PDLSCs, leading to improved expression of related osteogenic proteins. Subsequently, a total of 64 patients with loss of alveolar bone in the second molar, who received treatment at our hospital between July 2020 and July 2023, are included. They are randomly divided into a BO group (treated with BO) and a CGF/BO group (treated with CGF+BO). We observe that the combined application of CGF and BO demonstrated superior efficacy in alleviating pain, reducing swelling, and preventing dry socket incidence. In addition, it exhibited enhanced effectiveness in restoring periodontal tissue, including reducing probing depth, gingival depth, and clinical attachment loss. It also displayed better inhibition of gingival inflammatory response and gingival bleeding. Furthermore, it could enhance the restoration of periodontal BD, such as increasing the width of the alveolar bone and root depth, reducing the vertical distance from the apex of the alveolar ridge, as well as improving dental function. Therefore, the combined application of CGF and BO holds great potential in periodontal BD therapy for promoting the regeneration of periodontal bone, thus restoring dental function.
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