Simultaneous Sinus Lift and Implant Installation: Prospective Study of Consecutive Two Hundred Seventeen Sinus Lift and Four Hundred Sixty‐Two Implants

Author:

Cha Hyun‐Suk1,Kim Andrew2,Nowzari Hessam2,Chang Hoo‐Sun3,Ahn Kang‐Min4

Affiliation:

1. Department of Prosthodontics Asan Medical Center, College of Medicine, University of Ulsan Seoul Korea

2. Department of Advanced Periodontics University of Southern California Los Angeles CA USA

3. Department of Preventive Medicine & Public Health College of Medicine, Yonsei University Seoul Korea

4. Department of Oral and Maxillofacial Surgery Asan Medical Center, College of Medicine, University of Ulsan Seoul Korea

Abstract

AbstractPurposeIf less than 4 mm of residual bone is remained in posterior maxilla, two‐stage operation is recommended for implant installation. However, if primary stability could be obtained using tapered designed implants, one‐stage surgery could be performed with reliable success rate in severely resorbed maxilla. The purpose of this prospective study was to evaluate survival and success rates of the implants simultaneously placed into grafted sinus using rough‐surfaced implant.Materials and MethodsA total of two hundred seventeen consecutive sinus lifting through lateral approach and four hundred sixty‐two simultaneous implants were installed from November 2003 for 5.5 years. Xenogenic bone was used solely for bone graft materials. Second surgery was performed around 6 months after operation and porcelain fused metal or gold crown was used for definitive restorations. Cumulative survival and success rates were evaluated according to residual alveolar bone height (RABH), smoking status, and Schneiderian membrane perforation.ResultsThe mean follow‐up was 57.1 ± 15.6 (36–98) months. Of the four hundred sixty‐two implants, two hundred sixty‐two implants (56.7%: group 1) were installed in posterior maxilla less than 4‐mm RABH and two hundred implants (43.3%: group 2) were placed in over 5‐mm RABH. The cumulative survival and success rates were 98.91% and 96.54%. There was no statistically significant difference in success rate between group 1 and group 2 (p = .3135). Perforation of the membrane was not related to success (p = .7162), but smoking status is significantly related with implant failure (p = .0003).ConclusionsSinus lifting with simultaneous implant placement could be used to treat atrophic maxilla in patients with minimal RABH when initial stability could be obtained by using taper designed implants with surgical techniques. Smoking is a possible factor for implant failure. Membrane perforation did not have an adverse effect on implant success if the membrane was repaired with absorbable membrane and fibrin glue.

Publisher

Wiley

Reference40 articles.

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3. Histologic analysis of clinically retrieved titanium microimplants placed in conjunction with maxillary sinus floor augmentation;Jensen OT;Int J Oral Maxillofac Implants,1998

4. Varying treatment strategies for reconstruction of maxillary atrophy with implants: Results in 98 patients

5. Augmentation of the Posterior Maxilla: A Proposed Hierarchy of Treatment Selection

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