Plain English Summary
Background and study aims
The adult population of the city of Córdoba in Argentina currently has a high amounts of people who require dental extractions (teeth pulling), leading to issues with function and the looks. In the posterior sector (back section) of the upper jaw, bone remodeling following dental extractions leads to an unfavorable situation for rehabilitating with the implants that meet the basic biomechanical standards to support the corresponding prosthesis. Usually, when bone remodeling (saving) is done after a dental extraction, this makes it more difficult to put in a dental implant (an artificial tooth) and have the implant be successful. One of the strategies commonly used in surgical practice to add bone to the jaw is called a maxillary sinus floor elevation. This procedure adds a graft (which means placing tissue from one area of a body to another). Grafts can be autologous (tissue from the same individual) or allogeneic (tissue from someone else) but they need to be able to create enough bone height in the jaw in order to place implants. The grafts must comply with certain requirements in order to regenerate new bone and fix the bone to the jaw. One type of graft that is commonly used is Lyophilized Human Bone (LHB). The aim of this study is to evaluate, through clinical examination and imaging, the efficacy of using LHB as graft in maxillary sinus floor elevation.
Who can participate?
Adults aged 18 to 65 who have a tooth loss.
What does the study involve?
Participants attend a study visit where they undergo screening tests. They then undergo the maxillary sinus floor elevation. The materials used as a graft is LHB and contains of bone from the Blood Bank of the National University of Cordoba. Participants attend follow up appointments at day seven and day 180 after their procedure in order to assess the success of the bone regeneration and the dental implant.
What are the possible benefits and risks of participating?
There are no notable benefits or risks with participating.
Where is the study run from?
Faculty of Dentistry - National University of Cordoba (Argentina)
When is the study starting and how long is it expected to run for?
February 2014 to February 2016
Who is funding the study?
Department of Science and Technology, Ciudad University (Argentina)
Who is the main contact?
Dr Ricardo Bachur
Dr Ricardo Bachur
Cátedra de Cirugía III
Facultad de Odontología
Universidad Nacional de Cordoba
Haya de la Torre S/N
Non autologous human bone in adult patients to increment of mandible and maxillary bone for success of dental implant
The aim of this study is evaluate, through clinical studies and image diagnosis, the efficacy of human non-autologous bone as an alternative in the surgery of partial reconstruction of alveolar rims in jaw and maxilla for collocating dental implants.
Research and Ethics Committee of the Ministry of Health of the Province of Cordoba (Facultad Odontología-Universidad Nacional Córdoba), 12/08/2014, ref: ODO67
Interventional non-randomised study
Primary study design
Secondary study design
Non randomised study
Patient information sheet
See additional files (in Spanish)
Bone loss in mandibule and maxilla
Participants attend a first visit where they provide their clinical history and have the state of their oral cavity recorded. They undergo laboratory tests, x-rays and CT scans. Participants then undergo the surgery in order to recover the bone and have the maxillary sinus floor elevation. The material used as a graft in the surgery is LHB and irradiated, composed of ground bone particles ranging from 0.2 to 1 mm in size from the Blood Bank of the National University of Córdoba.
Participants attend follow up appointments at day seven and 180 where they undergo clinical examination and imaging to assess bone regeneration and the success of the dental implant.
Primary outcome measure
Bone regeneration is measured in millimeters using digital orthopantomographs by a specialist using the standard technique for orthopantomography, model Planmeca Autoprint, PM 2002, with automatic processor Kodak XP 400 at baseline, day seven and day 180.
Secondary outcome measures
Success of dental implant collocation is assessed by no-mobility of the implant when loaded at baseline, day seven and day 180.
Overall trial start date
Overall trial end date
Reason abandoned (if study stopped)
Participant inclusion criteria
1. Patients of both sexes
2. Aged from 18 to 65 years old
2. Experience of single or multiple tooth loss whose residual alveolar ridges are atrophic and therefore insufficient for an appropriate rehabilitation
Target number of participants
Participant exclusion criteria
1. History of type 1 diabetes mellitus
2. Symptomatic hypo- or hyperthyroidism
3. Immunodeficiency problems
5. Chemotherapy and/or radiotherapy
6. Arterial hypertension above 159/94
7. In the 6-month window period after acute myocardial infarction or cerebrovascular accident
8. Chronic periodontal disease
9. Bone diseases such as osteomalacia
12. Rheumatism or osteoporosis
14. Consumers of osteoactive drugs such as bisphosphonates, denosumab, raloxifene, teriparatide or corticoids
Recruitment start date
Recruitment end date
Countries of recruitment
Trial participating centre
Faculty of Dentistry National University of Cordoba (Facultad de Odontología Universidad Nacional de Córdoba)
Haya de la Torre s/n Ciudad Universitaria Pabellón Argentina
Department of Science and Technology (Secretaría de Ciencia y Técnica)
Juan Filloy s/n
Department of Science and Technology, Ciudad University
Funding Body Type
Funding Body Subtype
Results and Publications
Publication and dissemination plan
Planned publication in a high-impact peer reviewed journal.
IPD sharing statement:
The datasets generated during and/or analysed during the current study are/will be available upon request from Dr. Ricardo Bachur Chair of Surgery at email@example.com
Intention to publish date
Participant level data
Available on request
Basic results (scientific)
2019 results in: DOI: 10.25014/revfacodont271.2019.1.29 (added 12/12/2019)