Morbidity following transcrestal and lateral sinus floor elevation: A randomized trial

AimTo comparatively evaluate the morbidity following maxillary sinus floor elevation according to either transcrestal (tSFE) or lateral (lSFE) approach with concomitant implant placement. Materials & MethodsPatients with 1 edentulous maxillary posterior site with residual bone height (RBH) of 3-6mm were enrolled. tSFE was performed in association with a xenograft and a collagen matrix. For lSFE, the sinus was grafted with the xenograft, and the antrostomy was covered with a membrane. Implants were inserted concomitantly. The postoperative course was assessed through questionnaires. Pain level (VAS(pain)) was recorded using a 100-mm visual analogue scale. ResultsTwenty-nine and 28 patients were included in tSFE and lSFE group, respectively. On the day of surgery, VAS(pain) was significantly higher for tSFE compared to lSFE, and similar from day 1 to 14. tSFE was characterized by significantly lower incidence of swelling, bruising and nasal discharge/bleeding. Significantly less severe limitation in swallowing, continuing daily activities, eating, speaking, opening the mouth and going to school/work was found for tSFE only at specific postsurgery intervals. ConclusionslSFE was associated with lower pain on the day of surgery, and tSFE revealed lower postoperative morbidity as well as more tolerable postoperative course.