A comparative study of techniques for alveolar ridge preservation after tooth extraction
ISRCTN | ISRCTN92729767 |
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DOI | https://doi.org/10.1186/ISRCTN92729767 |
- Submission date
- 17/09/2025
- Registration date
- 19/09/2025
- Last edited
- 19/09/2025
- Recruitment status
- Recruiting
- Overall study status
- Ongoing
- Condition category
- Oral Health
Plain English summary of protocol
Background and study aims
Tooth extraction often leads to bone loss in the alveolar ridge, which can affect future implant placement. This study compares two techniques for preserving the ridge using different bone graft materials.
Who can participate?
Adults aged 20–50 with two similar teeth requiring extraction.
What Does the Study Involve?
Participants will receive two different treatments on each side of the mouth. One side will be treated with Sticky Bone, and the other with a calcium sulfate/tricalcium phosphate mixture.
What are the possible benefits and risks of participating?
No benefits and risks provided at registration
Where is the study run from?
Faculty of Dentistry, Idlib University, Syria
When is the study starting and how long is it expected to run for?
December 2024 to May 2027
Who is funding the study?
Investigator initiated and funded
Who is the main contact?
Dr Hussamdin Ismail, hussamdin_ismail@idlib.edu.sy
Contact information
Scientific, Principal Investigator
University Street
Idlib
+963
Syria
0000-0001-7811-8648 | |
Phone | +963 987733550 |
dr.hussam.d.i@gmail.com |
Public
Idlib University
Shoaib Street
Idlib
+44
Syria
0000-0003-4880-4035 | |
Phone | +963 7949825419 |
gohar_mushtaq@idlib.edu.sy |
Study information
Study design | Interventional randomized split-mouth single-centre non-blinded clinical trial |
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Primary study design | Interventional |
Secondary study design | Randomised controlled trial |
Study setting(s) | Dental clinic, University/medical school/dental school |
Study type | Prevention, Treatment |
Participant information sheet | 48017_PIS.pdf |
Scientific title | Effect of a mixture of calcium sulfate and tricalcium phosphate versus sticky bone technique on alveolar ridge preservation: a clinical, radiographic, and histological split-mouth study |
Study acronym | ARP reserve |
Study objectives | Evaluation of the efficacy of sticky bone graft and calcium sulfate in: Alveolar edge dimensions change Bone Density Osteogenesis (histological study) |
Ethics approval(s) |
Approved 15/05/2025, Ethics Committee of Idlib University (University Street, Idlib, -, Syria; +963936179302; fouad_aldaoud@idlib.edu.sy), ref: - |
Health condition(s) or problem(s) studied | Alveolar ridge resorption following tooth extraction |
Intervention | The method of randomization used in this study is allocation by the draw-a-card method. Group A (Sticky Bone): Atraumatic extraction followed by application of tricalcium phosphate mixed with PRF using the Sticky Bone technique. - Group B (CaSO₄ + TCP): Atraumatic extraction followed by application of a 40:60 mixture of calcium sulfate and tricalcium phosphate. - Follow-up Duration: 6 months - Measurements: Clinically: Measuring the dimensional changes of soft tissues and the thickness of the soft tissue covering the alveolar ridge crest. Radiographically: Evaluating the radiographic bone density of the newly formed bone and assessing the dimensional changes in the buccal and lingual walls of the socket. After standardizing the imaging parameters for cone-beam computed tomography (CBCT), radiographic scans will be taken using a Vatech X-ray device with the following settings: • 120 kVp, 5 mA • Voxel Size: 0.2 mm Two CBCT images will be taken: • First scan: Immediately after tooth extraction. • Second scan: Six months post-extraction. Both images will be loaded into the OnDemand3D software, where they will be aligned along the sagittal, coronal, and axial planes. The most relevant section of the image corresponding to the surgical intervention site will be selected. Histologically: Determining the quality of the newly formed bone six months after the surgical procedure. 1. Pain score using VAS at 1 and 7 days post-operative. 2. Healing index using the Landry scale at 1 week. 3. Soft tissue height at 6 months • Local anesthesia (2% lidocaine 1:100,000) administered to the alveolar ridge crest. A periodontal probe (UNC-15) will be inserted at the center of the soft tissue covering the alveolar ridge crest. A small drop of flowable composite will be placed on the soft tissue surface around the probe and then light-cured. The distance from the tip of the probe to the composite marker will be measured using a digital calliper. |
Intervention type | Procedure/Surgery |
Primary outcome measure | 1. Dimensional changes of soft tissues and the thickness of the soft tissue covering the alveolar ridge crest measured clinically after tooth extraction and six months post-extraction 2. Bone density of the newly formed bone and assessing the dimensional changes in the buccal and lingual walls of the socket, measured using cone-beam computed tomography (CBCT) with a Vatech X-ray device immediately after tooth extraction and six months post-extraction 3. Quality of the newly formed bone measured using histology six months after the surgical procedure |
Secondary outcome measures | 1. Pain measured using a Visual Analog Score (VAS) at 1 and 7 days post-operative 2. Healing measured using the Healing Index Landry scale at 7 days post-operative 3. Soft tissue height measured using the periodontal probe (UNC-15) method at 6 months |
Overall study start date | 08/12/2024 |
Completion date | 20/05/2027 |
Eligibility
Participant type(s) | Patient, Service user |
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Age group | Adult |
Lower age limit | 20 Years |
Upper age limit | 50 Years |
Sex | Both |
Target number of participants | 12 participants (24 extraction sites) |
Total final enrolment | 14 |
Key inclusion criteria | 1. Age 20–50 years 2. Good oral hygiene 3. Presence of two similar teeth requiring extraction in the same jaw (both upper and lower jaw) 4. The patient has two symmetrical teeth indicated for extraction 5. Type 1 socket classification (Elian) (indicating that the buccal bone plate is intact and undamaged following tooth extraction) |
Key exclusion criteria | 1. Smokers or alcohol users 2. Systemic diseases or medications affecting bone healing 3. Pregnant or lactating women 4. Presence of infection or fistula at the extraction site |
Date of first enrolment | 16/06/2025 |
Date of final enrolment | 21/12/2026 |
Locations
Countries of recruitment
- Syria
Study participating centre
Idlib
-
Syria
Sponsor information
University/education
University Street
Idlib
-
Syria
Phone | +963 179302 |
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info@idlib.edu.sy | |
Website | https://idlib.university |
https://ror.org/038n03236 |
Funders
Funder type
Other
No information available
Results and Publications
Intention to publish date | 20/01/2027 |
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Individual participant data (IPD) Intention to share | Yes |
IPD sharing plan summary | Available on request |
Publication and dissemination plan | Planned publication in a peer-reviewed journal |
IPD sharing plan | The datasets generated during and/or analysed during the current study are/will be available upon request from Dr Hussamdin Ismail, hussamdin_ismail@idlib.edu.sy. The shared dataset will include anonymized variables such as pain scores, healing indices, soft tissue measurements, radiographic bone density, and histological findings. Data will be made available via an open-access repository such as Zenodo or Dryad, or upon reasonable request to the principal investigator. Access will be granted to qualified researchers who provide a clear research purpose, obtain ethical approval, and sign a data use agreement ensuring responsible and confidential use. |
Study outputs
Output type | Details | Date created | Date added | Peer reviewed? | Patient-facing? |
---|---|---|---|---|---|
Participant information sheet | 19/09/2025 | No | Yes | ||
Protocol file | 19/09/2025 | No | No |
Additional files
Editorial Notes
19/09/2025: Study's existence confirmed by the Idlib University, University Council.