Horizontal Alveolar Ridge DeficiencySBBTvsSBTNCT07656662
Comparison of Split Box and Split Bone Block Techniques in Horizontal Ridge Augmentation
An observational study of Horizontal Alveolar Ridge Deficiency, run by Marmara University at 1 site in Turkey (Türkiye).
Trial summary
Horizontal alveolar ridge deficiencies may prevent the placement of dental implants and often require bone augmentation procedures before implant treatment. Two techniques commonly used for horizontal ridge augmentation are the Split Box Technique and the Split Bone Block Technique. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Horizontal Alveolar Ridge Deficiency
- What is being tested?
- Split Bone Block Technique and Split Box Technique
- Type of treatment
- Surgery or procedure
- How many people
- 31 participants
- Where
- 1 siteTurkey (Türkiye)
- Study dates
- Jan 2014to Jan 2026
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: The study population consisted of adult patients with horizontal alveolar ridge deficiencies who underwent horizontal ridge augmentation using either the Split Box Technique or the Split Bone Block Technique before implant placement. Patients were treated at Marmara University Faculty of Dentistry between January 2014 and January 2026 and had complete clinical records and CBCT imaging available for retrospective evaluation.
Who may be able to join
- Age ≥18 years.
- Patients with horizontal alveolar ridge deficiency requiring horizontal ridge augmentation before implant placement.
- Patients treated with either the Split Box Technique (SBT) or Split Bone Block Technique (SBBT) at Marmara University Faculty of Dentistry between January 2014 and January 2026.
- Availability of complete radiographic records, including CBCT scans obtained preoperatively (T0), 6 months after augmentation (T1), and during long-term follow-up after prosthetic loading (T2).
- Availability of complete clinical records and follow-up data.
Who cannot join
- Incomplete clinical or radiographic records.
- Patients lost to follow-up.
- Presence of uncontrolled systemic diseases or conditions known to adversely affect bone healing.
- Use of medications known to interfere with bone metabolism or healing.
- Active infection at the augmentation site or complications that altered the planned treatment protocol.
Trial locations and contacts
1 site in 1 country.
Turkey (Türkiye)1 site
Marmara University Faculty of Dentistry, Department of Oral and Maxillofacial Surgery
Istanbul, Istanbul, 34854
About this study
Official title: Comparison of Radiological Bone Gain and Resorption Between the Split Box Technique and the Split Bone Block Technique, and Evaluation of Implant Survival: a Retrospective Study
Horizontal alveolar ridge deficiencies may prevent the placement of dental implants and often require bone augmentation procedures before implant treatment. Two techniques commonly used for horizontal ridge augmentation are the Split Box Technique and the Split Bone Block Technique.
This retrospective study included patients treated at Marmara University Faculty of Dentistry between January 2014 and January 2026. Radiographic records were reviewed to evaluate bone gain after augmentation and the stability of the augmented bone during long-term follow-up. Implant survival after prosthetic rehabilitation was also assessed.
The purpose of this study was to compare the long-term outcomes of the Split Box Technique and the Split Bone Block Technique in terms of bone gain, bone stability, and implant survival.
Read the detailed description
Horizontal alveolar ridge deficiencies often require augmentation procedures before dental implant placement. Among the available augmentation methods, the Split Bone Block Technique (SBBT) and the Split Box Technique (SBT) are autogenous bone augmentation approaches designed to increase horizontal ridge width and facilitate implant-supported rehabilitation.
The aim of this retrospective study was to compare the radiological outcomes of SBBT and SBT with respect to horizontal bone gain, long-term bone stability, and implant survival. In addition, postoperative complications associated with both techniques were evaluated.
Patients treated between January 2014 and January 2026 at the Department of Oral and Maxillofacial Surgery, Marmara University Faculty of Dentistry, were retrospectively screened. Patients who underwent horizontal ridge augmentation using either SBBT or SBT and had complete radiographic follow-up records were included in the study.
Cone-beam computed tomography (CBCT) images obtained preoperatively, 6 months after augmentation, and during long-term follow-up after prosthetic rehabilitation were used to assess changes in horizontal bone width and graft stability. Radiological measurements were performed to evaluate bone gain after augmentation, dimensional changes during follow-up, and long-term maintenance of the augmented ridge.
The primary outcome measures were horizontal bone gain and long-term bone resorption. Secondary outcome measures included implant survival following definitive prosthetic rehabilitation and the occurrence of postoperative complications.
The study was designed to determine whether the Split Box Technique and the Split Bone Block Technique provide comparable long-term clinical and radiological outcomes for the treatment of horizontal alveolar ridge deficiencies prior to implant placement.
- Conditions
- Horizontal Alveolar Ridge Deficiency
- Being tested
- Split Bone Block Technique, Split Box Technique
- Keywords
- Split Box Technique, Split Bone Block Technique, Horizontal Ridge Augmentation, Dental Implants, Bone Resorption, Implant Survival, CBCT
- Medical subject headings
- Bone Resorption
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Split Bone Block TechniqueProcedure or surgery
Also called SBBT
Autogenous horizontal ridge augmentation procedure using cortical bone plates harvested from the mandibular ramus to reconstruct deficient alveolar ridges prior to implant placement.
Split Box TechniqueProcedure or surgery
Also called SBT
Autogenous horizontal ridge augmentation procedure involving mobilization and fixation of a buccal bone segment to increase horizontal ridge width prior to implant placement.
| Study group | Role | What they receive |
|---|---|---|
| Split Bone Block Technique (SBBT) | Patients who underwent horizontal alveolar ridge augmentation using the Split Bone Block Technique. Receives: Procedure: Split Bone Block Technique | |
| Split Box Technique (SBT) | Patients who underwent horizontal alveolar ridge augmentation using the Split Box Technique. Receives: Procedure: Split Box Technique |
What is being measured
The primary outcome is the main question the study is designed to answer.
Long-Term Horizontal Bone Gain
Overall change in horizontal alveolar ridge width from baseline to long-term follow-up after prosthetic loading, measured on CBCT images.
Measured: From baseline (preoperative CBCT) to long-term follow-up after prosthetic loading(average follow-up: 4.2 years)
Secondary outcomes (4)
Implant Survival Rate
Survival of dental implants placed in augmented sites following prosthetic rehabilitation.
Measured: From implant placement through study completion (average follow-up: 4.2 years)
Postoperative Complications
Occurrence of complications related to augmentation procedures, including wound dehiscence, infection, graft exposure, and neurosensory disturbances.
Measured: From augmentation surgery through study completion (average follow-up: 4.2 years)
Long-Term Bone Resorption
Change in horizontal ridge width between the post-augmentation healing period and long-term follow-up, measured on CBCT images.
Measured: From 6 months after augmentation surgery to long-term follow-up after prosthetic loading (average follow-up: 4.2 years)
Horizontal Bone Gain
Change in horizontal alveolar ridge width from baseline to 6 months after augmentation, measured on CBCT images.
Measured: From baseline (preoperative CBCT) to 6 months after augmentation surgery
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted18 Jun 2026
- Study startJan 2014
- Primary completionJan 2026
- Study completionJan 2026
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for Horizontal Alveolar Ridge DeficiencyStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Retrospective
- Enrolment
- 31 participants (actual)
Sponsor and investigators
- Lead sponsor
- Marmara University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Guhan Dergin, DDS, PhD, Principal investigator, Marmara University Faculty of Dentistry
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07656662
- Sponsor's protocol ID
- 2025-11-02/2025-86
- Other IDs
- 2025-11-02/2025-86
- Acronym
- SBBTvsSBT
- Status last verified
- Jun 2026
- First submitted
- 5 Jun 2026
- Last updated
- 18 Jun 2026
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Dergin G, Kirac Can SB, Can S. A novel approach for horizontal augmentation with split box: A method that combines split bone block and ridge split techniques. J Stomatol Oral Maxillofac Surg. 2024 Dec;125(6):101790. doi: 10.1016/j.jormas.2024.101790. Epub 2024 Feb 1.
PubMed 38296024Khoury F, Hanser T. Mandibular bone block harvesting from the retromolar region: a 10-year prospective clinical study. Int J Oral Maxillofac Implants. 2015 May-Jun;30(3):688-97. doi: 10.11607/jomi.4117.
PubMed 26009921
Study at a glance
From the registry record, last updated by the sponsor on 18 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Comparison of Radiological Bone Gain and Resorption Between the Split Box Technique and the Split Bone Block Technique, and Evaluation of Implant Survival: a Retrospective Study
- ClinicalTrials.gov ID
- NCT07656662
- Acronym / sponsor ID
- SBBTvsSBT / 2025-11-02/2025-86
- Conditions
- Horizontal Alveolar Ridge Deficiency
- Keywords
- Split Box Technique, Split Bone Block Technique, Horizontal Ridge Augmentation, Dental Implants, Bone Resorption, Implant Survival, CBCT
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 31 participants (actual)
- Lead sponsor
- Marmara UniversityUniversity, hospital or other
- Study start
- Jan 2014 (actual)
- Primary completion
- Jan 2026 (actual)
- Study completion
- Jan 2026 (actual)
- First posted
- 18 Jun 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Horizontal alveolar ridge deficiencies may prevent the placement of dental implants and often require bone augmentation procedures before implant treatment. Two techniques commonly used for horizontal ridge augmentation are the Split Box Technique and the Split Bone Block Technique.
This retrospective study included patients treated at Marmara University Faculty of Dentistry between January 2014 and January 2026. Radiographic records were reviewed to evaluate bone gain after augmentation and the stability of the augmented bone during long-term follow-up. Implant survival after prosthetic rehabilitation was also assessed.
The purpose of this study was to compare the long-term outcomes of the Split Box Technique and the Split Bone Block Technique in terms of bone gain, bone stability, and implant survival.
Detailed description
Horizontal alveolar ridge deficiencies often require augmentation procedures before dental implant placement. Among the available augmentation methods, the Split Bone Block Technique (SBBT) and the Split Box Technique (SBT) are autogenous bone augmentation approaches designed to increase horizontal ridge width and facilitate implant-supported rehabilitation.
The aim of this retrospective study was to compare the radiological outcomes of SBBT and SBT with respect to horizontal bone gain, long-term bone stability, and implant survival. In addition, postoperative complications associated with both techniques were evaluated.
Patients treated between January 2014 and January 2026 at the Department of Oral and Maxillofacial Surgery, Marmara University Faculty of Dentistry, were retrospectively screened. Patients who underwent horizontal ridge augmentation using either SBBT or SBT and had complete radiographic follow-up records were included in the study.
Cone-beam computed tomography (CBCT) images obtained preoperatively, 6 months after augmentation, and during long-term follow-up after prosthetic rehabilitation were used to assess changes in horizontal bone width and graft stability. Radiological measurements were performed to evaluate bone gain after augmentation, dimensional changes during follow-up, and long-term maintenance of the augmented ridge.
The primary outcome measures were horizontal bone gain and long-term bone resorption. Secondary outcome measures included implant survival following definitive prosthetic rehabilitation and the occurrence of postoperative complications.
The study was designed to determine whether the Split Box Technique and the Split Bone Block Technique provide comparable long-term clinical and radiological outcomes for the treatment of horizontal alveolar ridge deficiencies prior to implant placement.
Study design
- Observational model
- Cohort
- Time perspective
- Retrospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Split Bone Block Technique (SBBT) | – | Procedure: Split Bone Block TechniquePatients who underwent horizontal alveolar ridge augmentation using the Split Bone Block Technique. |
| Split Box Technique (SBT) | – | Procedure: Split Box TechniquePatients who underwent horizontal alveolar ridge augmentation using the Split Box Technique. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- The study population consisted of adult patients with horizontal alveolar ridge deficiencies who underwent horizontal ridge augmentation using either the Split Box Technique or the Split Bone Block Technique before implant placement. Patients were treated at Marmara University Faculty of Dentistry between January 2014 and January 2026 and had complete clinical records and CBCT imaging available for retrospective evaluation.
Key inclusion criteria (5 listed)
- Age ≥18 years.
- Patients with horizontal alveolar ridge deficiency requiring horizontal ridge augmentation before implant placement.
- Patients treated with either the Split Box Technique (SBT) or Split Bone Block Technique (SBBT) at Marmara University Faculty of Dentistry between January 2014 and January 2026.
- Availability of complete radiographic records, including CBCT scans obtained preoperatively (T0), 6 months after augmentation (T1), and during long-term follow-up after prosthetic loading (T2).
- Availability of complete clinical records and follow-up data.
Key exclusion criteria (5 listed)
- Incomplete clinical or radiographic records.
- Patients lost to follow-up.
- Presence of uncontrolled systemic diseases or conditions known to adversely affect bone healing.
- Use of medications known to interfere with bone metabolism or healing.
- Active infection at the augmentation site or complications that altered the planned treatment protocol.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Split Bone Block TechniqueAlso: SBBTAutogenous horizontal ridge augmentation procedure using cortical bone plates harvested from the mandibular ramus to reconstruct deficient alveolar ridges prior to implant placement. | Procedure or surgery | Split Bone Block Technique (SBBT) |
| Split Box TechniqueAlso: SBTAutogenous horizontal ridge augmentation procedure involving mobilization and fixation of a buccal bone segment to increase horizontal ridge width prior to implant placement. | Procedure or surgery | Split Box Technique (SBT) |
Primary outcome
Long-Term Horizontal Bone Gain
Time frame: From baseline (preoperative CBCT) to long-term follow-up after prosthetic loading(average follow-up: 4.2 years)
Overall change in horizontal alveolar ridge width from baseline to long-term follow-up after prosthetic loading, measured on CBCT images.
4 secondary outcomes
Implant Survival Rate
Time frame: From implant placement through study completion (average follow-up: 4.2 years)
Postoperative Complications
Time frame: From augmentation surgery through study completion (average follow-up: 4.2 years)
Long-Term Bone Resorption
Time frame: From 6 months after augmentation surgery to long-term follow-up after prosthetic loading (average follow-up: 4.2 years)
Horizontal Bone Gain
Time frame: From baseline (preoperative CBCT) to 6 months after augmentation surgery
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 18 Jun 2026.
- Results publication: PubMed 38296024Dergin G, Kirac Can SB, Can S. A novel approach for horizontal augmentation with split box: A method that combines split bone block and ridge split techniques. J Stomatol Oral Maxillofac Surg. 2024 Dec;125(6):101790. doi: 10.1016/j.jormas.2024.101790. Epub 2024 Feb 1.
- Results publication: PubMed 26009921Khoury F, Hanser T. Mandibular bone block harvesting from the retromolar region: a 10-year prospective clinical study. Int J Oral Maxillofac Implants. 2015 May-Jun;30(3):688-97. doi: 10.11607/jomi.4117.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Guhan Dergin, DDS, PhD principal investigator
Marmara University Faculty of Dentistry
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Horizontal Alveolar Ridge Deficiency, run by Marmara University at 1 site in Turkey (Türkiye).
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 18 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Turkey (Türkiye). Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Long-Term Horizontal Bone Gain (time frame: From baseline (preoperative CBCT) to long-term follow-up after prosthetic loading(average follow-up: 4.2 years)). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT07656662, which also lists 2 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 18 Jun 2026.