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Posterior Maxillary AtrophyNCT07794293

Comparison of Three Surgical Approaches for Lateral Sinus Floor Elevation

A study testing Conventional Rotary Lateral Sinus Floor Elevation, Epinephrine-Soaked Cotton Roll and Piezoelectric Sinus Lift in people with Posterior Maxillary Atrophy and Maxillary Sinus Augmentation, run by Istanbul Aydın University at 1 site in Turkey (Türkiye).

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This study compares three surgical approaches used during lateral sinus floor elevation, a procedure performed to increase bone height in the back part of the upper jaw before or together with dental implant placement. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
Conventional Rotary Lateral Sinus Floor Elevation, Epinephrine-Soaked Cotton Roll and Piezoelectric Sinus Lift
Type of treatment
Surgery or procedure
Could I receive a placebo?
No, everyone receives an active treatment
How many people
504 participants
Where
1 siteTurkey (Türkiye)
Study dates
1 May 2021to 24 Jul 2026
Phase
Interventional
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

Who may be able to join

  • Must be older than 18 years
  • Clinical diagnosis of absence of one or more maxillary posterior molars with a healing period of at least 6 months after extraction
  • Clinical indication for Lateral Sinus Floor Elevation with either simultaneous or delayed implant placement; residual bone height ≤5 mm at the planned implant site
  • Must be confirmed by cone-beam computed tomography (CBCT)
  • Must have an availability of complete medical, clinical, and radiographic records.

Who cannot join

  • Uncontrolled systemic disease
  • Known bleeding or coagulation disorders, including clinically relevant thrombocytopenia or platelet dysfunction
  • Current use of anticoagulant or antiplatelet medications
  • Pathological sinus mucosal thickening or other radiographic or clinical evidence of sinus disease
  • Untreated periapical or periodontal infection adjacent to the maxillary sinus
  • Antiresorptive therapy
Show all 10Show fewer
  • History of head and neck radiotherapy
  • Requirement for additional vertical or horizontal bone augmentation procedures other than LSFE
  • Previous LSFE involving the same maxillary sinus
  • Schneiderian membrane thickness >4 mm on preoperative CBCT in otherwise clinically and radiographically healthy sinuses

Trial locations and contacts

1 site in 1 country.

Turkey (Türkiye)1 site
  • Istanbul Aydin University

    Istanbul, 34295

Other trials in Turkey (Türkiye)

About this study

Official title: Comparison of Intraoperative Conditions and Schneiderian Membrane Perforation Risk Among Three Surgical Approaches for Lateral Sinus Floor Elevation: A Prospective Comparative Study

This study compares three surgical approaches used during lateral sinus floor elevation, a procedure performed to increase bone height in the back part of the upper jaw before or together with dental implant placement. Participants are randomly assigned to one of three groups: a standard surgical procedure, a technique using an epinephrine-soaked cotton roll to help control bleeding, or a piezoelectric surgical technique.

The study compares these approaches in terms of bleeding during surgery, visibility of the surgical field, ease of performing the procedure, operation time, and Schneiderian membrane perforation, an intraoperative complication that can occur during sinus lift surgery. Patient-related and anatomical factors, including age, sex, smoking status, residual bone height, sinus membrane thickness, lateral sinus wall thickness, and the presence of sinus septa, are also recorded.

The aim is to determine whether the surgical approach influences intraoperative conditions and membrane perforation and whether patient-related or anatomical factors are associated with these outcomes.

Read the detailed description

This single-center, prospective, randomized, three-arm clinical trial evaluated intraoperative conditions and Schneiderian membrane perforation during lateral sinus floor elevation (LSFE) performed using three surgical approaches. Eligible patients requiring LSFE for implant rehabilitation were randomized in a 1:1:1 ratio to the standard procedure (SP), epinephrine-soaked cotton roll technique (ESCR), or piezoelectric sinus lift (PESL) group. The randomization sequence was computer-generated by an independent statistician using variable permuted blocks of 6, 9, and 12 participants. Treatment allocation was concealed through a centralized electronic allocation system and was released only after eligibility had been confirmed and written informed consent had been obtained.

A standardized local anesthesia protocol was used in all three groups. Before incision, 3 mL of Ultracain D-S Forte, corresponding to 120 mg articaine hydrochloride and 0.036 mg epinephrine, was administered. In the SP group, the lateral window was prepared using conventional rotary instrumentation, and the Schneiderian membrane was elevated using conventional hand instruments. In the ESCR group, following completion of the lateral sinus wall osteotomy, a cottonoid saturated with an additional 1 mL of Ultracain D-S Forte, containing 40 mg articaine hydrochloride and 0.012 mg epinephrine, was applied to the surgical field for 5 minutes. After removal of the cottonoid, membrane elevation was continued using conventional hand instruments. In the PESL group, piezoelectric instruments were used for lateral-window preparation and membrane elevation, with conventional hand instruments used when required to complete membrane elevation. Subsequent grafting and implant-related procedures were performed according to standardized surgical protocols.

Patient-related and anatomical variables, including age, sex, smoking status, side of surgery, residual bone height (RBH), Schneiderian membrane thickness, lateral wall thickness (LWT), and the presence of maxillary sinus septa, were recorded preoperatively. Anatomical measurements were obtained from cone-beam computed tomography (CBCT) images. Schneiderian membrane perforation was assessed intraoperatively and recorded as a binary outcome (yes/no).

The four co-primary intraoperative outcomes were bleeding, surgical field visibility, procedural simplicity, and operation time. Bleeding, visibility, and procedural simplicity were assessed immediately after completion of surgery by the operating surgeon using 11-point numerical rating scales (NRSs; 0-10). For bleeding, 0 indicated no bleeding and 10 indicated excessive bleeding sufficient to compromise the surgical field. For visibility, 0 indicated the poorest possible surgical visibility and 10 indicated optimal visibility. For procedural simplicity, 0 indicated maximal procedural difficulty and 10 indicated the greatest ease of surgical handling. Operation time was measured using a stopwatch from initiation of the lateral-window osteotomy to completion of Schneiderian membrane elevation and was recorded in minutes, rounded to the nearest whole number; graft placement and implant placement were not included in the recorded operation time.

The primary objective was to compare the three surgical techniques with respect to the four co-primary intraoperative outcomes. Schneiderian membrane perforation constituted the principal secondary outcome. Additional secondary analyses evaluated whether the associations between intraoperative bleeding, visibility, and procedural simplicity and membrane perforation differed according to surgical technique. Associations of patient- and anatomy-related characteristics with intraoperative conditions and membrane perforation were also explored.

Statistical analyses included unadjusted between-group comparisons and multivariable analyses. The four co-primary outcomes were evaluated using separate multivariable linear regression models adjusted for age, RBH, sinus septa, smoking status, Schneiderian membrane thickness, and LWT, with heteroskedasticity-consistent HC3 standard errors. Membrane perforation was evaluated using multivariable binary logistic regression adjusted for the same patient- and anatomy-related covariates. Technique-dependent modification of the relationships between bleeding, visibility, procedural simplicity, and membrane perforation was assessed using separate multivariable logistic regression models containing surgical technique × intraoperative parameter interaction terms and adjusted for age, RBH, sinus septa, smoking status, Schneiderian membrane thickness, and LWT. Supportive exploratory analyses included correlation and non-parametric association analyses.

Being tested
Conventional Rotary Lateral Sinus Floor Elevation, Epinephrine-Soaked Cotton Roll, Piezoelectric Sinus Lift
Keywords
Lateral Sinus Floor Elevation, Dental Implants, Schneiderian Membrane Perforation, Piezosurgery, Epinephrine-Soaked Cotton Roll, Surgical Simplicity, Surgical Visiblity, Operation Time, Residual Bone Height

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Conventional Rotary Lateral Sinus Floor ElevationProcedure or surgery

    Also called Standard Procedure, SP

    A lateral sinus window is created using a rotary round diamond bur. After removal of the bony window, the Schneiderian membrane is elevated using conventional manual sinus instruments. Membrane integrity is evaluated by direct visualization and the Valsalva maneuver. Subsequent grafting and implant-related procedures are performed according to the standardized study protocol.

  • Epinephrine-Soaked Cotton RollProcedure or surgery

    Also called Epinephrine-Soaked Cottonoid-Assisted Lateral Sinus Floor Elevation, ESCR

    A lateral sinus window is created using a rotary round diamond bur. Following completion of the lateral sinus wall osteotomy, a cottonoid saturated with an additional 1 mL of Ultracain D-S Forte, containing 40 mg articaine hydrochloride and 0.012 mg epinephrine, is applied to the surgical field for 5 minutes to promote local hemostasis. After removal of the cottonoid, Schneiderian membrane elevation is continued using conventional manual sinus instruments. Subsequent procedures follow the standardized study protocol.

  • Piezoelectric Sinus LiftProcedure or surgery

    Also called Piezoelectric Lateral Sinus Floor Elevation, PESL

    The lateral sinus window is created using US2 and UL4 piezoelectric surgical tips. The Schneiderian membrane is subsequently elevated using UL2 and UL5 piezoelectric inserts, supplemented with conventional manual sinus instruments when necessary. Membrane integrity is evaluated by direct visualization and the Valsalva maneuver. Subsequent grafting and implant-related procedures are performed according to the standardized study protocol.

Study groups in NCT07794293
Study groupRoleWhat they receive
Conventional Rotary Lateral Sinus Floor Elevation (SP)Active comparatorThe lateral sinus window was prepared using a rotary round diamond bur. After removal of the bony window, the Schneiderian membrane was elevated using conventional manual sinus instruments.
Receives: Procedure: Conventional Rotary Lateral Sinus Floor Elevation
Epinephrine-Soaked Cotton Roll (ESCR)ExperimentalThe lateral sinus window was prepared using a rotary round diamond bur. Following completion of the lateral sinus wall osteotomy, a cottonoid was saturated with an additional 1 mL of Ultracain D-S Forte, containing 40 mg articaine hydrochloride and 0.012 mg epinephrine, and applied to the surgical field for 5 minutes. After removal of the cottonoid, Schneiderian membrane elevation was continued using conventional manual sinus instruments.
Receives: Procedure: Epinephrine-Soaked Cotton Roll
Piezoelectric Sinus Lift (PESL)ExperimentalThe lateral sinus window was prepared using US2 and UL4 piezoelectric surgical tips. The Schneiderian membrane was elevated using UL2 and UL5 piezoelectric inserts, supplemented with conventional manual sinus instruments when necessary.
Receives: Procedure: Piezoelectric Sinus Lift

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Intraoperative bleeding score

    Intraoperative bleeding was assessed immediately after surgery by the operating surgeon using an 11-point numerical rating scale (NRS; 0-10). A score of 0 indicated no bleeding, whereas a score of 10 indicated excessive bleeding sufficient to compromise the surgical field. Higher scores represented greater intraoperative bleeding.

    Measured: Immediately after completion of surgery

  2. Surgical Field Visibility Score

    Surgical field visibility was assessed immediately after surgery by the operating surgeon using an 11-point numerical rating scale (NRS; 0-10). A score of 0 indicated the poorest possible surgical visibility, whereas a score of 10 indicated optimal visibility. Higher scores represented better surgical field visibility.

    Measured: Immediately after completion of surgery

  3. Procedural Simplicity Score

    Procedural simplicity was assessed immediately after surgery by the operating surgeon using an 11-point numerical rating scale (NRS; 0-10). A score of 0 indicated maximal procedural difficulty, whereas a score of 10 indicated the greatest ease of surgical handling. Higher scores represented greater procedural simplicity.

    Measured: Immediately after completion of surgery

  4. Operation time

    Operation time was measured using a stopwatch from initiation of the lateral-window osteotomy to completion of Schneiderian membrane elevation and was recorded in minutes, rounded to the nearest whole number. Graft placement and implant placement were not included in the recorded operation time. Higher values indicated a longer operative duration.

    Measured: From the start to the completion of sinus membrane elevation

Secondary outcomes (1)
  1. Intraoperative Schneiderian Membrane Perforation

    Schneiderian membrane perforation is assessed intraoperatively by direct visualization and the Valsalva maneuver and recorded as a binary outcome (yes/no). The outcome is reported as the number and percentage of participants experiencing membrane perforation in each intervention group.

    Measured: During the surgical procedure, through completion of sinus membrane elevation

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted31 Aug 2026
  2. Study start1 May 2021
  3. Primary completion24 Jul 2026
  4. Study completion24 Jul 2026

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase N/A
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Model description
Participants were randomly allocated in a 1:1:1 ratio to one of three parallel intervention groups: standard procedure (SP), epinephrine-soaked cotton roll technique (ESCR), or piezoelectric sinus lift (PESL). A computer-generated randomization sequence with variable permuted blocks of 6, 9, and 12 was used. Allocation was concealed through a centralized electronic system and was released only after eligibility had been confirmed and written informed consent had been obtained. Each participant received only the allocated intervention, with no crossover between groups.
Masking
None (open label)
Enrolment
504 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT07794293
Sponsor's protocol ID
IAU-DENT-OMFS-LSFE-2026-01
Status last verified
Oct 2026
First submitted
26 Aug 2026
Last updated
7 Oct 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: Individual participant-level data will not be made publicly available because of participant confidentiality and institutional data-protection requirements. Aggregated data may be available from the corresponding author upon reasonable request, subject to ethical and institutional approval.

Questions about this trial

What is this clinical trial studying?

A study testing Conventional Rotary Lateral Sinus Floor Elevation, Epinephrine-Soaked Cotton Roll and Piezoelectric Sinus Lift in people with Posterior Maxillary Atrophy and Maxillary Sinus Augmentation, run by Istanbul Aydın 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 10 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 7 Oct 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?

Intraoperative bleeding score (time frame: Immediately after completion of surgery). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 7 Oct 2026.

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