Effect of Force Magnitude on Canine Retraction and Gingival Crevicular Fluid Proteome

Conditions

• Tooth Crowding

Eligibility Criteria

Sex

ALL

Age

11 Years - 16 Years

Healthy Volunteers

Accepted

Interventions

• Light Force (150g Niti Coil) — DEVICE
  Patients' participation in the study (T0) will be started at the stage of canine retraction. At this appointment, 0.019 x 0.025-inch stainless steel archwire will be placed; power arms will be fabricated from 17x25-inch stainless steel on the maxillary first molars and canines. The height of the power arm will be matched with the center of resistance of both canines and molars based on the root length measured on the periapical radiographs. The archwire will be engaged in the canine bracket using stainless steel ligature wire. NiTi coil spring calibrated for force magnitude (150g) at oral temperature will be used to deliver the assigned force will be engaged from the first molars to the canine power arms
• Heavy Force (400 g Niti coil) — DEVICE
  Patients' participation in the study (T0) will be started at the stage of canine retraction. At this appointment, 0.019 x 0.025-inch stainless steel archwire will be placed; power arms will be fabricated from 17x25-inch stainless steel on the maxillary first molars and canines. The height of the power arm will be matched with the center of resistance of both canines and molars based on the root length measured on the periapical radiographs. The archwire will be engaged in the canine bracket using stainless steel ligature wire. NiTi coil spring calibrated for force magnitude (400g) at oral temperature will be used to deliver the assigned force will be engaged from the first molars to the canine power arms

Study Details

This study aims to examine the effect of force levels in orthodontic treatment during canine retraction. Force levels refer to the pressure applied by the orthodontic devices to move teeth. Data collection will include gingival fluid, dental molds from a digital scanner, and x-rays of the upper canine region on both sides of the mouth during treatment. The null hypothesis to be tested is that there is no significant difference in the rate of canine movement between the light force and the heavy force levels.

Key Dates

Start date

Nov 13, 2024

Status verified

Oct 2024

Primary completion

Oct 1, 2027

Completion

Apr 1, 2028

Study Design

Enrollment

40 participants (estimated)

Allocation

RANDOMIZED

Intervention model

SINGLE_GROUP

Primary purpose

TREATMENT

Arms

• Active Comparator: Light force (150g Niti Coil Spring)
  One of the maxillary canines to be retracted will be assigned to the light force group randomly. Patients' participation in the study (T0) will be started at the stage of canine retraction. At this appointment, 0.019 x 0.025-inch stainless steel archwire will be placed; power arms will be fabricated from 17x25-inch stainless steel on the maxillary first molars and canines. The height of the power arm will be matched with the center of resistance of both canines and molars based on the root length measured on the periapical radiographs. The archwire will be engaged in the canine bracket using stainless steel ligature wire. NiTi coil spring calibrated for force magnitude (150g) at oral temperature will be used to deliver the assigned force will be engaged from the first molars to the canine power arms.
• Experimental: Heavy force (400g NiTi Coil Spring)
  One side of the maxillary canines to be retracted will have a heavy force assigned randomly. Patients' participation in the study (T0) will be started at the stage of canine retraction. At this appointment, 0.019 x 0.025-inch stainless steel archwire will be placed; power arms will be fabricated from 17x25-inch stainless steel on the maxillary first molars and canines. The height of the power arm will be matched with the center of resistance of both canines and molars based on the root length measured on the periapical radiographs. The archwire will be engaged in the canine bracket using stainless steel ligature wire. NiTi coil spring calibrated for force magnitude (400g) at oral temperature will be used to deliver the assigned force will be engaged from the first molars to the canine power arms.

Primary Outcome Measure

Rate of Canine retraction [ Time Frame: 16-17 weeks ]

Central Contacts

• Flavio Uribe, DDS, MDentSc
  860-679-2664
  [email protected]
• Georgiana Defilio
  860-679-2550

Locations (1)

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