Clinical and radiographic assessment of reverse drilling technique on the upper jaw dimension and bone level in sinus lift surgery

Clinical and radiographic assessment of reverse drilling technique on bone dimension and crestal bone level in closed sinus lift surgery

Status

Active, not recruiting

Phases

Phase 3

Study type

Interventional

Source

IRCT

Registry ID

IRCT20250601066010N1

Enrollment

Registered

2025-06-03

Start date

2025-06-18

Completion date

Unknown

Last updated

2025-07-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Closed sinus lift. Moderate atrophy of the maxilla

Interventions

Intervention 1: Intervention group: Patients undergoing closed sinus lift using the reverse drilling technique with the Straumann kit. Intervention 2: Control group: Patients undergoing closed sinus l

Eligibility

Sex/Gender

All

Age

18 Years to No maximum

Inclusion criteria

Inclusion criteria: The patient is a candidate for implant placement in the posterior maxilla. The bone height in the posterior maxillary region is 4 to 5 millimeters. Implant placement requires a closed sinus lift. There is sufficient interarch space. The patient is in overall systemic health and does not take any medications.

Exclusion criteria

Exclusion criteria: The patient has uncontrolled systemic diseases such as cardiovascular disease, diabetes, or immune disorders. The Schneiderian membrane becomes perforated during surgery.

Design outcomes

Primary

Measure	Time frame
The extent of sinus floor augmentation. Timepoint: 3 months post-augmentation. Method of measurement: Assessing the vertical elevation of the sinus floor using radiographic examination.;Marginal Bone Level. Timepoint: Three months after augmentation and implant placement. Method of measurement: Measurement of the distance between the first thread of the implant and the crestal bone on periapical radiographs, recorded in tenths of a millimeter.;Perforation of the Schneiderian membrane. Timepoint: Immediately after sinus augmentation. Method of measurement: Valsalva maneuver.;Initial survival rate. Timepoint: Three months after augmentation and implant placement. Method of measurement: Evaluating the survival rate of the implants in the follow-up session.	—

Measure

Time frame

The extent of sinus floor augmentation. Timepoint: 3 months post-augmentation. Method of measurement: Assessing the vertical elevation of the sinus floor using radiographic examination.;Marginal Bone Level. Timepoint: Three months after augmentation and implant placement. Method of measurement: Measurement of the distance between the first thread of the implant and the crestal bone on periapical radiographs, recorded in tenths of a millimeter.;Perforation of the Schneiderian membrane. Timepoint: Immediately after sinus augmentation. Method of measurement: Valsalva maneuver.;Initial survival rate. Timepoint: Three months after augmentation and implant placement. Method of measurement: Evaluating the survival rate of the implants in the follow-up session.

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Secondary

Measure	Time frame
Evaluating the insertion torque of the implant. Timepoint: During the implant insertion. Method of measurement: Torque meter.	—

Countries

Iran (Islamic Republic of)

Contacts

Public ContactAli Forouzanfar

Mashhad University of Medical Sciences

ForouzanfarA@mums.ac.ir+98 51 3882 9501

Outcome results

None listed

Source: IRCT (via WHO ICTRP) · Data processed: Feb 4, 2026