Crestal minimally-invasive sinus lift on severely resorbed maxillary crest: prospective study.
OBJECTIVE
This case series aimed to explore the clinical outcome of sinus floor elevation surgery using a crestal approach technique in case of severely resorbed maxillae.


METHODS
Seventeen edentulous patients received 20 implants and sinus floor elevation in posterior maxillae with residual crestal height of 1.2-5.0 mm and >7 mm. Drilling perforation was performed until the sinus floor was felt; the sinus mucosa was then lifted and magnesium-enriched hydroxyapatite granules (Mg-e HAP) were placed; and implants were immediately inserted. Four months later, definitive crowns were cemented, and patients were followed up for 24 months. Implant failures and complications 24 months after prosthetic loading were noted, and radiographic regenerated bone height was measured.


RESULTS
No patient dropped out, and all implants were successfully osseointegrated. There was minimal postoperative patient discomfort, and the only complication was a minimal perforation of the sinus membrane with no negative consequences. At the time of implant insertion, the residual crestal height mean value was 4.12 mm. After surgery and at the last follow-up, the mean heights of bone were 13.51 and 12.98 mm, respectively.


CONCLUSIONS
The procedure was able to obtain sinus elevation and implant osseointegration.
Private Practice, Piacenza , Italy.
Angelo
A
Sisti
Luigi
L
Canullo
Maria Pia
MP
Mottola
Giuliano
G
Iannello
D001862:Bone Resorption / Q000000981:diagnostic imaging / Q000601:surgery*; D003757:Dental Implantation / Q000379:methods; D019250:Dental Implants, Single-Tooth; D019094:Dental Prosthesis, Implant-Supported; D019232:Dental Restoration Failure; D005260:Female; D006801:Humans; D008297:Male; D008439:Maxillary Diseases / Q000000981:diagnostic imaging / Q000601:surgery*; D008443:Maxillary Sinus / Q000000981:diagnostic imaging / Q000601:surgery*; D019060:Minimally Invasive Surgical Procedures / Q000379:methods*; D011446:Prospective Studies; D011859:Radiography; D059546:Sinus Floor Augmentation / Q000379:methods*; D016896:Treatment Outcome