Evaluation of the Sandblasting on the Rebonding Strength

Evaluation of the Effectiveness of Enamel Surface Treatment Using Sandblasting on the Bond Strength in the Rebonding Process: a Randomized Controlled Trial

Patients at the Orthodontic Department of University of Aleppo Dental School will be selected if they meet the inclusion criteria then fixed orthodontic treatment with 0.018-inch slot MBT appliances will be applied for those patients.

The aim of this study is to compare Two rebonding procedures by applying a split-mouth design. The clinical failure rates of the two rebonding procedures will be evaluated.

Study Overview

• Status: Completed
• Conditions: Orthodontic Appliance Complication
• Intervention / Treatment: Procedure: Sandblasting; Procedure: Acid Etching

Detailed Description

The sample of this study will be chosen after examination of patients referred to the Department of Orthodontics at the University of Aleppo Dental School then subjects who meet the inclusion criteria will be included in this trial.

An information sheet will be given to each possible candidate. Then consent forms will be obtained.

All patients will receive both rebonding procedures by applying split-mouth design. Each patient will be asked to select an opaque sealed envelope from a box with 20 ones. Ten envelopes will Include instructions for applying sandblasting prior to acid-etching on the right upper premolars and acid-etching alone on the left upper premolars. In contrast, the other ten envelopes will include opposite instructions.

A total sample of 80 premolars will be obtained to study the clinical failure rates of the two rebonding procedures.

The 80 premolars will be randomly divided into two groups:

• The first group in which the enamel will be prepared using sandblasting prior to acid-etching.
• The second group in which the enamel will be prepared using acid-etching alone.

• Study Type: Interventional
• Enrollment (Actual): 20
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Syrian Arab Republic
  • Aleppo, Syrian Arab Republic, Al88 74TR
    • Department of Orthodontics, University of Aleppo Dental School

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 13 years to 18 years (Child, Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

1. good general health and oral hygiene
2. willing and able to comply with the trial procedures
3. No crossbite, scissor bite, or occlusal interferences with the bonded/rebonded brackets in the premolars region (to prevent any potential early bond failure)
4. no craniofacial anomalies.

Exclusion Criteria:

1. any type of pervious orthodontic therapy
2. any need for ortho-surgical treatment or teeth extraction.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Other
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Sandblasting; The enamel surfaces will be subjected to sandblasting prior to acid etching	Procedure: Sandblasting; Sandblasting will be applied onto the vestibular surfaces of the teeth before applying the etchant.
Active Comparator: Acid Etching Alone; Acid etching will be applied alone before the rebounding procedures	Procedure: Acid Etching; Only acid etching will be applied onto the vestibular surfaces of the teeth before rebonding

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Bonding Failure Rate	Number of brackets loosing their bond to the enamel during the observation period divided by the total number of braces being applied.	After six month exactly of bonding the brackets onto the surfaces of the teeth

Collaborators and Investigators

• Sponsor: Damascus University
• Investigators: Principal Investigator: Ahmad Rami Dirie, DDS MSc, Specialist and Clinical Lecturer, Department of Orthodontics, University of Aleppo; Principal Investigator: Heba M. Al-Ibrahim, DDS, MSc student in Orthodontics, University of Damascus; Study Director: Jamal Dabbas, DDS MSc PhD, Professor of Orthodontics, Department of Orthodontics, University of Aleppo; Study Director: Mohammad Y Hajeer, DDS MSc PhD, Professor of Orthodontics, Department of Orthodontics, University of Damascus

Publications and helpful links

General Publications

• Egan FR, Alexander SA, Cartwright GE. Bond strength of rebonded orthodontic brackets. Am J Orthod Dentofacial Orthop. 1996 Jan;109(1):64-70. doi: 10.1016/s0889-5406(96)70164-6.
• Bishara SE, Laffoon JF, Vonwald L, Warren JJ. The effect of repeated bonding on the shear bond strength of different orthodontic adhesives. Am J Orthod Dentofacial Orthop. 2002 May;121(5):521-5. doi: 10.1067/mod.2002.123042.
• Faust JB, Grego GN, Fan PL, Powers JM. Penetration coefficient, tensile strength, and bond strength of thirteen direct bonding orthodontic cements. Am J Orthod. 1978 May;73(5):512-25. doi: 10.1016/0002-9416(78)90241-5. No abstract available.
• Mizrahi E. Success and failure of banding and bonding. A clinical study. Angle Orthod. 1982 Apr;52(2):113-7. doi: 10.1043/0003-3219(1982)0522.0.CO;2.
• Dirie AR, Hajeer MY, Dabbas J, Al-Ibrahim HM. Evaluation of sandblasting with acid etching versus acid etching alone in the preparation of enamel for rebonding orthodontic brackets: An in vitro study and a randomized controlled trial. J World Fed Orthod. 2021 Mar;10(1):3-8. doi: 10.1016/j.ejwf.2020.12.001. Epub 2021 Jan 7.

Study record dates

Study Major Dates

• Study Start (Actual): June 20, 2011
• Primary Completion (Actual): May 10, 2012
• Study Completion (Actual): June 15, 2012

Study Registration Dates

• First Submitted: October 25, 2020
• First Submitted That Met QC Criteria: October 25, 2020
• First Posted (Actual): October 28, 2020

Study Record Updates

• Last Update Posted (Actual): October 28, 2020
• Last Update Submitted That Met QC Criteria: October 25, 2020
• Last Verified: October 1, 2020

More Information

Terms related to this study

• Other Study ID Numbers: UADS-2020-01

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No