Condition category
Oral Health
Date applied
Date assigned
Last edited
Retrospectively registered
Overall trial status
Recruitment status
No longer recruiting

Plain English Summary

Background and study aims
Dental implants are artificial replacements for tooth roots that are placed within the bone of the jaw so that they can be used to support dentures, crowns (caps) or bridges.
In some patients there is not enough bone in their jaw to allow dental implants to be inserted. In cases where a lot of bone is needed, it may be possible to rebuild the jaw using bone taken from another part of the body. DentoGen® is a new bone graft product that can be used in place of bone.
The aim of this study is to evaluate the efficacy of using calcium sulfate bone graft (bone substitute with commercial name DentoGen®).

Who can participate?
Patients aged 25 – 65 years with tooth loss in the anterior area of the maxilla extracted at least 3 months before the study.

What does the study involve?
Patients undergo dental implant surgery as normal using the bone substitute material in place of a usual bone graft. Patients are followed up after four months.

What are the possible benefits and risks of participating?
The possible benefits are to gain bone in the buccal side of the dental implants so that means we could achieve one stage implantation with GBR by a new method using a reliable material allowing us to:
1. Dispense the use of collagen membrane and titanium mesh
2. Reduce the overall treatment plan time in these cases from nearly a year to just 4 months
3. Give the ability to treat the patient with bone loos by dental implant without expose them for more than 1 surgery.
The possible risk is to not having a perfect bone remodelling on the margin of the buccal side of the implant which will slightly effect the aesthetic side of the area

Where is the study run from?
Faculty of Dentistry of Damascus University (Syria)

When is the study starting and how long is it expected to run for?
June 2019 to May 2020

Who is funding the study?
Damascus University (Syria)

Who is the main contact?
Kenan Saoud,

Trial website

Contact information



Primary contact

Dr Kenan Saoud


Contact details

Damascus University
Mazzeh Highway
+963 966600565

Additional identifiers

EudraCT number

Nil known number

Nil known

Protocol/serial number

Nil known

Study information

Scientific title

Evaluation of the effectiveness of using calcium sulfate bone graft in the context of immediate grafting around dental implants


Study hypothesis

Calcium sulfate from (DentoGen ®) is effective as a bone grafting material

Ethics approval

Approved 14/05/2019, Scientific research committee in the faculty of dentistry at Damascus University (Mazzeh Highway, Damascus, Syria; +963113341864;, ref: 557

Study design

Prospective interventional study

Primary study design


Secondary study design

Prospective interventional study

Trial setting


Trial type


Patient information sheet

Not available in web format, please use the contact details below to request a patient information sheet


Bone grafting in the buccal side of dental implants when the bone is thin


After local anesthesia a full-thickness flap is made in the implantation site, the best place of the implant in point and axes is determined, a very thin layer of bone is left buccally after socket preparation then the implant is inserted then the graft (CS) is mixed and the buccal bone layer dried by Gauze, after that apply the material on the buccal side by layers and making pressure on it by Gauze moisturizer with the combined solution waiting 2 - 4 minutes until the graft is solid then make sure that the flap can be sutured free of tension to make a firm closure using 4-0 nylon sutures.

Next day a CBCT image is taken of the implantation area, measured to determine the width of the site, the amount of the gain, graft and bone density.

The sutures are removed 8 - 10 days after the surgery.
After 4 months the final CBCT image is taken to do the same measurements and compare it with the previous ones to determine the final width of the site, the amount of the gain, graft and bone density and the resorption rate of the graft.

Intervention type



Drug names

Primary outcome measure

Using CBCT imaging technique:
1. Width of the bone in the grafted area the day after the procedure and at 4 months
2. Bone and graft density buccally to the implants the day after application and after 4 months
3. Resorption rate of the graft by comparing measures taken the day after and 4 months after

Secondary outcome measures

1. Width in the site of implantation the day after the procedure and at 4 months using CBCT imaging technique
2. The thickness of attached gingiva in the area of implantation before the procedure and 4 months after using CBCT imaging technique
3. The success rate at 4 months (further surgery required, yes or no)

Overall trial start date


Overall trial end date


Reason abandoned (if study stopped)


Participant inclusion criteria

1. Patient with tooth loss in the anterior area of the maxilla extracted at least 3 months before the study.
2. Healthy patient with no general diseases and no medication intake.
3. Aged 25 - 65 years
4. Width of the alveolar ridge 3.5 - 5.5 mm on a diagnostic CBCT image
5. Non smoking

Participant type


Age group




Target number of participants


Participant exclusion criteria

1. Newly extracted teeth in the area of tooth lost
2. General diseases or medication intake
3. Bad oral hygiene or smoking

Recruitment start date


Recruitment end date



Countries of recruitment


Trial participating centre

Damascus University
Faculty of Dentistry Mazzeh Highway

Sponsor information


Damascus University

Sponsor details

Mazzeh Highway
+963 (0)114442727

Sponsor type




Funder type


Funder name

Damascus University

Alternative name(s)

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 current data sharing plans for this study are unknown and will be available at a later date

Intention to publish date


Participant level data

To be made available at a later date

Basic results (scientific)

Publication list

Publication citations

Additional files

Editorial Notes