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KMID : 0362720100480030205
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Journal of the Korean Dental Association
2010 Volume.48 No. 3 p.205 ~ p.217
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Predictability of simultaneous implant placement with sinus floor elevation in the severely atrophic posterior maxillae ; Comparison of lateral and trans-crestal approaches
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Kim Yeong-Wook
Keum Yun-Seon
Son Hyo-Jeong
Lee Jang-Yeol
Kim Hyun-Chull
Lee Sang-Chull
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Abstract
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Purpose: The aim of this study is to evaluate the survival rates and analyze the stability of lateral approach and trans-crestal approach for maxillary sinus floor elevation of simultaneous implant placement.
Materials and method: 407 patients who have been treated in LivingWell dental hospital between 2003 to 2009 were selected. Lateral window technique, osteotome technique and sinus drill technique were used for sinus floor elevation procedure. A total of 714 implants- MP-1 HA coated implant(Tapered Screw VentTM, SplineTM, Zimmer, USA), FBR surfaced implant(Pitt-EasyTM, Oraltronics, Germany)-were placed in grafted maxillary sinus simultaneously. The autogenous bone or a combination with the allograft or alloplast was grafted into sinus. Sinus floor elevation was combined with vertical/horizontal onlay bone grafts to reconstruct the defect of alveolar ridge.
Results: The average preoperative height of the maxillary alveolar bone was 5.78mm(range: 0.4 ~12.5 ).
14 implants failed during the healing period(lateral approach: 4, trans-crestal approach: 10) and 3 implant failed after prosthetic loading(lateral approach: 2, trans-crestal approach: 1). The cumulative survival rate of implants after 6 years was 97.6%. Transcrestal approach(97.4%) and lateral approach(97.9%) had similar survival rates.
Conclusion: The results indicate that the trans-crestal approach and lateral approach for maxillary sinus elevation is a acceptable method at atrophic maxillary posterior area.
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KEYWORD
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lateral approach, maxillary sinus floor elevation, simultaneous implant placement, trans-crestal approach
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