Effect of miniscrew design on survival rate and pain in orthodontic patients

A comparison of the effect of taper and cylindrical miniscrew designs on clinical success rate and pain in orthodontic patients

Status

Active, not recruiting

Phases

Phase 3

Study type

Interventional

Source

IRCT

Registry ID

IRCT201607049569N3

Enrollment

212

Registered

2016-08-02

Start date

2016-04-03

Completion date

Unknown

Last updated

2018-02-22

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

Conditions

Orthodontic Anchorage Procedures. Adjustment and management of other implanted devices

Interventions

Intervention 1: Control group: 106 cylindrical miniscrews manufactured by General Implant Company, with a diameter of 1.6mm and a length of 11mm will be inserted on both sides of maxilla between secon

Treatment - Other

Control group: 106 cylindrical miniscrews manufactured by General Implant Company, with a diameter of 1.6mm and a length of 11mm will be inserted on both sides of maxilla between second premolar and f

Intervention group: 106 taper miniscrews manufactured by General Implant Company, with a diameter of 1.6mm and a length of 11mm will be inserted on both sides of maxilla between second premolar and fi

Eligibility

Sex/Gender

All

Age

10 Years to 40 Years

Inclusion criteria

Inclusion criteria: Inclusion criteria: A treatment plan to insert miniscrews on both sides of maxilla between the second premolar and the first molar for retraction of anterior teeth. Exclusion criteria: Any disease compromising bone quality like osteoporosis, osteomalasia, and osteopetrosis.

Exclusion criteria

Exclusion criteria:

Design outcomes

Primary

Measure	Time frame
Mobility in miniscrews. Timepoint: every 4 weeks after miniscrew placement. Method of measurement: By placing a calibrated probe on the miniscrew and lateral movement, if mobility is greater than 0.5 millimeter, the miniscrew is designated mobile.;Pain. Timepoint: immediately after miniscrew placement and 6hours, 24hours, 48hours, and a week after. Method of measurement: registeration of the amount of pain from 0 (minimum pain) to 10 (maximum pain) according to Visual Analogue Scale in special times.	—

Measure

Time frame

Mobility in miniscrews. Timepoint: every 4 weeks after miniscrew placement. Method of measurement: By placing a calibrated probe on the miniscrew and lateral movement, if mobility is greater than 0.5 millimeter, the miniscrew is designated mobile.;Pain. Timepoint: immediately after miniscrew placement and 6hours, 24hours, 48hours, and a week after. Method of measurement: registeration of the amount of pain from 0 (minimum pain) to 10 (maximum pain) according to Visual Analogue Scale in special times.

—

Secondary

Measure	Time frame
Amount of insertion torque of the miniscrews. Timepoint: during insertion of miniscrews. Method of measurement: Torque measurement device (Orthonia, JEIL Company).	—

Countries

Iran (Islamic Republic of)

Contacts

Public ContactAmir Mohammadi

Department of Orthodontics of Dental Faculty of Tabriz University of Medical Sciences

amirortho@gmail.com+98 41 3329 4312

Outcome results

None listed

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