A minimally invasive technique for lateral maxillary sinus floor elevation: a Bayesian network study.
OBJECTIVE
To describe a minimally invasive technique for lateral maxillary sinus elevation and to identify the relationship between the involved factors.


METHODS
This is a retrospective study on patients treated with an original minimally invasive technique for lateral maxillary sinus elevation in a private dental clinic from 2008 to 2013. Failures, complications, and radiographic measurements were registered 9 months after surgery at the provisional prosthesis delivery. The relationship between demographic and clinical factors was investigated using Bayesian network analyses.


RESULTS
One hundred and twenty-four patients (147 maxillary sinuses) were treated, and 242 implants were placed. Seven patients dropped out. A total of two implants in two patients failed. Perforation of the sinus membrane occurred in seven patients (6%). Five different complications in five patients were observed. Mean peri-implant marginal bone level 9 months after surgery was 1.10 ± 0.74 mm. Mean vertical bone gain was 7.44 ± 1.95 mm. Perforation was more frequently observed in patients that did not undergo the sedation procedure. Complications (excluding perforation and including implant failure) were more frequent in cases where only bone substitutes were used.


CONCLUSIONS
This technique can be considered noninvasive, with a low early failure and early complication rate.
Clinica Merli, Rimini, Italy.|INDENT, Rimini, Italy.|Politecnico delle Marche, Ancona, Italy.
Mauro
M
Merli
Clinica Merli, Rimini, Italy.|INDENT, Rimini, Italy.
Marco
M
Moscatelli
Clinica Merli, Rimini, Italy.|INDENT, Rimini, Italy.
Giorgia
G
Mariotti
INDENT, Rimini, Italy.|Private Practice, Florence, Italy.
Umberto
U
Pagliaro
Clinica Merli, Rimini, Italy.|INDENT, Rimini, Italy.
Francesco
F
Bernardelli
INDENT, Rimini, Italy.|Department of Surgery and Translational Medicine, University of Florence, Florence, Italy.
Michele
M
Nieri
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001499:Bayes Theorem; D003758:Dental Implantation, Endosseous; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008903:Minerals; D011183:Postoperative Complications; D012189:Retrospective Studies; D059546:Sinus Floor Augmentation / Q000379:methods*; D016896:Treatment Outcome
C077540:Bio-Oss; D008903:Minerals
Bayesian networks; bone substitutes; bone transplantation; dental implant; oral surgical procedures; sinus floor augmentation