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2. A simplified classification and repair system for sinus membrane perforations;Fugazzotto;J Periodontol,2003
3. A retrospective multicenter evaluation of osseous integrated implants supporting overdentures;Engquist;Int J Oral Maxillofac Implants,1988
4. Localized ridge augmentation using guided bone regeneration. I. Surgical procedure in the maxilla;Buser;Int J Periodont Rest Dent,1993
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