Clinical trial NCT03797963: Clinical Study on the Use of Symbios Xenograft for Sinus Floor Elevation
Official title: Split-mouth Randomized Clinical Study on the Use of Symbios Xenograft for Sinus Floor Elevation
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Sinus Floor Augmentation
Keywords: Maxillary sinus augmentation
Sinus lift
Biomaterial
Anorganic bovine bone
Porcine bone mineral
Implant dentistry
Lead sponsor: Universidad de Granada
Sponsor class: OTHER
First posted: 2019-01-09
Enrollment: 10
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: The study aims to evaluate the clinical and radiological behavior, the histological and morphometrical components, the expression of proteins related to bone formation, and the analysis of markers of reparative mesenchymal stromal cells, after using two different xenogenic biomaterials in combination with autogenous cortical bone for maxillary sinus floor elevation.

A randomized split-mouth clinical study is designed to include patients in need of two-stage bilateral maxillary sinus floor elevation. Patients will be assigned to receive a mix of autogenous cortical bone (collected by a bone scraper from the access window to the maxillary sinus) and anorganic bovine bone (BioOss Xenograft) in one maxillary sinus or autogenous cortical bone and porcine bone mineral (Symbios Xenograft) in the other maxillary sinus. Cone-beam computerized tomography (CBCT) scans will be performed before and after sinus floor elevation and 6, 12 and 18 months after the procedure to assess the bone gain. Bone core biopsies will be obtained at the site of implant placement 6 months after the floor elevation. Histological sections will be subjected to histomorphometric and immunohistochemical evaluation of differentiation markers.


Eligibility criteria: Inclusion Criteria:

* Partially edentulous patients.
* Kennedy class I in the upper jaw.
* Less than 5 mm of residual crestal bone to the maxillary sinus.
* Need for the replacement of teeth with dental implants.

Exclusion Criteria:

* Sinus pathology (sinusitis, mucocele, cysts).
* Smokers.
* Previous long-term (\>3 months) use of drugs known to affect bone metabolism, such as bisphosphonates.

Primary outcomes:
measure: Sinus floor height change
timeFrame: From surgery to 6 months
Secondary outcomes:
measure: Sinus floor height change after 12 months
timeFrame: From surgery to 12 months
measure: Sinus floor height change after 18 months
timeFrame: From surgery to 18 months
measure: Area of new mineralized tissue
timeFrame: 6 months
measure: Area of non-mineralized tissue
timeFrame: 6 months
measure: Area of remaining graft particles
timeFrame: 6 months
Other outcomes:
Locations:
city: Granada
country: Spain
facility: Universidad de Granada
Study officials:
affiliation: Universidad de Granada
name: Pablo Galindo-Moreno, DDS, MS, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Galindo-Moreno P, de Buitrago JG, Padial-Molina M, Fernandez-Barbero JE, Ata-Ali J, O Valle F. Histopathological comparison of healing after maxillary sinus augmentation using xenograft mixed with autogenous bone versus allograft mixed with autogenous bone. Clin Oral Implants Res. 2018 Feb;29(2):192-201. doi: 10.1111/clr.13098. Epub 2017 Oct 26.
citation: Galindo-Moreno P, Avila G, Fernandez-Barbero JE, Aguilar M, Sanchez-Fernandez E, Cutando A, Wang HL. Evaluation of sinus floor elevation using a composite bone graft mixture. Clin Oral Implants Res. 2007 Jun;18(3):376-82. doi: 10.1111/j.1600-0501.2007.01337.x. Epub 2007 Mar 12.
citation: Galindo-Moreno P, Abril-Garcia D, Carrillo-Galvez AB, Zurita F, Martin-Morales N, O'Valle F, Padial-Molina M. Maxillary sinus floor augmentation comparing bovine versus porcine bone xenografts mixed with autogenous bone graft. A split-mouth randomized controlled trial. Clin Oral Implants Res. 2022 May;33(5):524-536. doi: 10.1111/clr.13912. Epub 2022 Mar 3.