An Evaluation of Integration Success and Maintenance of Short Implants in Maxillas Needing Sinus Augmentation

Inclusion Criteria: * patients of either sex and any race greater than 18 years of age * patients with partial edentulism in the posterior maxilla requiring a unilateral implant-supported maxillary prosthesis * patients with a residual alveolar floor of the sinus between 4 and 6 mm in height, as assessed on intraoral radiographs, and able to receive at least a 4mm wide implant * patients must be physically able to tolerate conventional surgical and restorative procedures Exclusion Criteria: * patients with active infection or severe inflammation in the areas intended for implant placement * patients with a \> 10 cigarettes per day smoking habit * patients with uncontrolled diabetes or metabolic bone disease * patient with a history of therapeutic radiation to the head * patients who are known to be pregnant * patients with para-functional habits with evidence of severe bruxing or clenching * patients not able to commit to a 3 year follow-up program