The correlation between bone augmentation and surgical incision design
Conditions
Interventions
Group 1:Small incision (inside gingival papillary incision): a horizontal incision on the alveolar crest plus a vertical incision on the inner side of the distal gingival papilla, and the vertical inc
Group2:Large-scale incision (angular or trapezoidal): In addition to the horizontal incision on the top of the alveolar crest in the operation area, it is extended to 1-2 teeth outside the operation a
Group 3:Incision in the gingival sulcus: According to the scope of the bone defect, the incision is designed as a horizontal incision on the crest of the alveolar ridge of the operation area extending
Sponsors
The Stomatology Hospital, Zhejiang University School of Medicine
Eligibility
Sex/Gender
All
Inclusion criteria
Inclusion criteria: (1) Aged between 18 and 65 years old, regardless of gender; (2) Defect of maxillary anterior teeth and choose implant fixation; (3) Those who meet the indications for implantation and have no systemic diseases and can withstand implant surgery; (4) Periodontal condition is good, no progressive alveolar bone resorption, no periodontal abscess; (5) Those who have horizontal bone defects in the implantation area and require guided bone regeneration; (6) The remaining alveolar bone wall in the missing tooth area has at least one bone defect but no more than three walls, and there is no sufficient bone wrap around the implant; (7) There is no loosening of adjacent teeth in the missing tooth area; (8) Patients with good oral environment and good compliance; (9) Voluntarily sign an informed consent form for surgery.
Exclusion criteria
Exclusion criteria: (1) There are 4 bone walls remaining in the extraction socket, and there is no need to guide bone regeneration; (2) Metal porcelain crowns or metal cast posts are used for adjacent teeth in the missing tooth area; (3) Those who have severe periodontal disease and the periodontal condition is not stable; (4) Accompanied by acute or severe infection, white blood cell count>10x10^9/L; (5) Women during pregnancy and lactation; (6) Those who take special drugs for a long time, such as hormones, anticoagulants, bisphosphonates, etc.; (7) People whose general condition and nutritional status are poor and cannot tolerate dental implant surgery; (8) Those who have a history of heart disease or arteriosclerosis who cannot tolerate dental implant surgery; (9) People with blood system diseases and uncontrolled cardiovascular diseases (hypertension [systolic blood pressure>150mmHg, diastolic blood pressure>90mmHg], coronary heart disease, congenital heart disease, etc.); (10) Systemic or local bone diseases are considered contraindications for implant repair, such as bone tuberculosis, osteitis, bone tumors, etc.; (11) Those suffering from systemic immune diseases; (12) People suffering from severe epilepsy or mental illness or mental disorder; (13) Those with uncontrolled diabetes, fasting blood glucose>7.0mmol/L; (14) Head and neck diseases with a history of radiotherapy within 5 years; (15) The coagulation time check is greater than twice the normal range; (16) The investigator believes that it is not suitable to participate in this clinical study due to other reasons.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Changes in the horizontal bone width of different bone graft areas at 6 months, 12 months, and 24 months after surgery compared to the day after surgery;Changes in level of bone mass and bone resorption at 6 months, 12 months, and 24 months after surgery compared to the day after surgery; | — |
Countries
China
Contacts
Public ContactYang Guoli
Department of Implantology, Affiliated Stomatological Hospital of Zhejiang University School of Medicine
Outcome results
None listed