Alveolar Bone Loss* / Therapy, Periodontitis
Conditions
Keywords
Periodontitis, Alveolar Bone Loss* / therapy, BMP-2, Hydrogel
Brief summary
This project aims to construct an injectable self-healing hydrogel loaded with BMP-2, with optimized gelation time and mechanical strength to meet the requirements for periodontal pocket filling, for the treatment of periodontitis and acceleration of tissue repair, achieving a "bactericidal-anti-inflammatory-regenerative" trinity function. This project will provide a novel intelligent material for promoting alveolar bone regeneration in periodontitis and establish a theoretical paradigm for the precise intervention of oral infectious diseases.
Interventions
subgingival scaling + BMP-2 hydrogel
Sponsors
Study design
Eligibility
Inclusion criteria
* Clinical Diagnosis: Meets the 2018 International Classification of Periodontal Diseases, diagnosed with Stage III or IV periodontitis. * Bone Defect Characteristics: At least one affected tooth presents with a deep periodontal pocket (PPD ≥5 mm), and CBCT imaging confirms the presence of significant vertical bone resorption or angular bone defects (these defect types are most suitable for in-situ hydrogel filling and guided regeneration). * Age and General Condition: Aged between 18 and 70 years, any gender, generally in good systemic health. * Compliance and Consent: The subject is able to understand the study procedures, voluntarily sign the informed consent form, and commit to returning for follow-up visits as required (1, 3, 6, 12 months).
Exclusion criteria
* Systemic Interference with Bone Metabolism: Presence of poorly controlled diabetes (HbA1c \> 7%), osteoporosis, or long-term use of medications affecting bone metabolism such as bisphosphonates or glucocorticoids within the past six months. * Local Anatomical Limitations: The affected tooth has a vertical root fracture, severe periapical pathology, or a residual root that is deemed non-restorable and without preservation value. * Factors Interfering with Healing: Heavy smokers (average \> 10 cigarettes per day), as impaired microcirculation can significantly compromise the biological effects of the hydrogel. * Special Physiological Periods: Pregnant or breastfeeding women.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Vertical Bone Defect Fill Height (VBH) | Up to 12 month | Three-dimensional reconstruction using CBCT (Cone Beam Computed Tomography) to measure the change in distance from the base of the bone defect to the alveolar crest between pre-operative and post-operative scans. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Clinical Periodontal Parameter Examination | Up to 12 month | Probing Pocket Depth (PPD), Clinical Attachment Level (CAL), Gingival Recession Depth (GR), Bleeding on Probing (BOP). |
Contacts
The First Affiliated Hospital of Xinxiang Medical College