Objectives: The aim of our study was to compare the viability of graftless sinus floor augmentation with sinus augmentation
using xenograft material in crestal sinus lifting procedure.
Materials and Methods: A total of twelve patients who received fourteen dental implants were included in this study for
replacement of missed single tooth or multiple teeth in the maxillary posterior region after crestal sinus lifting procedure. The
average age was 38 years (ranged from 21 to 55 years). The patients were randomly divided into two groups. In the first group,
patients underwent crestal sinus floor elevation with simultaneous implant placement using graftless technique, while in the
second group, patient underwent crestal sinus floor elevation with simultaneous implant placement using xenograft. Patients
were evaluated clinically and radiographically at regular time intervals immediately, 3 months and 9 months after surgery. All
clinical and radiographic parameters were subjected to statistical analysis.
Results: Fourteen implants were stable. There was no significant difference in implant stability between group I
(64.14 ± 3.13, 70.43 ± 3.95, 78.0 ± 2.71) and group II (67.57 ± 5.06, 73.43 ± 4.31, 79.86 ± 2.91) through the whole study
period, while there was significant difference in bone height gain between group I (4.60 ± 0.95) and group II (6.16 ± 0.49)
after 9 months (P = 0.002).
Conclusions: This study confirms the validity of graftless sinus lifting procedure when simultaneous implant placement
is performed.