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EVALUATION OF THE INITIAL STABILITY AFTER SURGERY IN PATIENTS WITH MAXILLARY POSTERIOR DENTAL IMPLANTS WITH INDICATIONS FOR HYDRAULIC CLOSED SINUS LIFT WITH BONE GRAFTING
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Abstract
Objectives: Evaluation of the initial stability after surgery in patients with maxillary posterior dental implants, with indications for hydraulic closed sinus lift with bone grafting at the Central Odonto-Stomatology Hospital and Hai Phong Medical University Hospital. Subjects and methods: 33 maxillary posterior teeth were implanted, the useful bone height was measured, the bone density before implantation was measured, the initial stability level after implantation was measured and the relationship between the initial stability level and the implantation level was found. position of missing teeth, bone density, useful bone height, implant diameter and length. We studied 33 posterior maxillary teeth before implantation with hydraulic closed sinus lift with bone graft. Result: Initial stability 35N/cm2 - 45Ncm2: 69.7%, > 45 N/cm2: 30.3%, p < 0.05. Small molar group: the initial stable level of >45N/cm2 reached 28.5%. Group of molars: the initial stable level of > 45N/cm2 reached 30.77%. Pre-graft bone density of type D2 100% achieved stability > 45N/cm2, D3: 29.63% achieved > 45N/cm2, D4, 100% reached 35 - 45N/cm2, (p < 0.05). Useful bone height < 5mm, initial stability > 45 Ncm2: 25%. Useful bone height 5-6mm, initial stability > 45 N/cm2 reached 33.33% (p > 0, 05). Implant length 10mm, initial stability 35N/cm2 - 45 N/cm2: 62.5%. The implant length is 11.5mm, the initial stabilization level is 35 - 45 N/cm2: 76.47% (p> 0.05) . The implant diameter 4mm has the initial stabilization level of 35 - 45 N/cm2, reaching the rate: 57.14%. The implant diameter 4.5mm has an initial stabilization level of 35 - 45 N/cm2 83.33%. The implant diameter has the initial stabilization level of 35-45N/cm2, reaching 70% (p>0.05). Conclusion: Useful bone height and pre-graft bone density determine the initial stability;. While the position of tooth loss, the length and diameter of the implant did not signficantly affect the initial stability
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Keywords
implant, maxillary teeth, bone density
References
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