This study retrospectively evaluated the effect of two different lateral window preparation techniques on peri-implant bone augmentation for patients who underwent lateral sinus floor elevation with simultaneous implant placement using two-dimensional and three-dimensional radiographic results, with special emphasis placed on the stability of the graft material after surgery.
Study Type
OBSERVATIONAL
Enrollment
34
The piezoelectric technique, another window preparation procedure that does not use a round bur, was first introduced to LSFE in 2001 for its high accuracy of osteotomy and low rate of membrane perforation. Later studies demonstrated that the operation time, postoperative reactions, and perforation rate of this procedure are considered to be acceptable compared with rotary bur. Moreover, the piezoelectric technique allows for the lateral bone window to be cut and preserved relatively completely.
Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine
Hangzhou, Zhejiang, China
Apical bone height
The distance (mm) from the implant apex to the most apical position of the graft material along the longitudinal axis of the implant
Time frame: Immediately after surgery, and 6 months after surgery
Endo-sinus bone gain
The distance (mm) from the level of the sinus floor (middle of the buccal level and palatal level) to the level of the most apical position of the graft material along the longitudinal axis of the implant
Time frame: Immediately after surgery, and 6 months after surgery
Palatal bone height
The vertical distance (mm) from the api- cal margin of the implant shoulder on the palatal side straight up to the position of the most apical position of the graft material
Time frame: Immediately after surgery, and 6 months after surgery
Buccal bone height
The vertical distance (mm) from the api- cal margin of the implant shoulder on the buccal side straight up to the position of the most apical position of the graft material
Time frame: Immediately after surgery, and 6 months after surgery
Augmentation volume
The volume of the endo-sinus reconstructed graft materials
Time frame: Immediately after surgery, and 6 months after surgery
Perforation incidence
Sinus perforation was determined by direct visualization and the Valsalva maneuver during the surgery process.
Time frame: During the surgery
Early implant loss
Early implant loss was defined as an implant show- ing clinical mobility prior to the placement of the abutment
Time frame: 6 months after surgery
Lateral window length
the distance between the edges of lateral window caused by the lateral antrostomy
Time frame: Immediately after surgery, and 6 months after surgery
Lateral bone length
the length of the bone window ob- tained by piezoelectric osteotomy
Time frame: Immediately after surgery, and 6 months after surgery
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