Surface Wear of Clear Aligner Attachment Composites

Marmara University35 enrolled

Overview

The aim of this study is to investigate the amount of surface wear that may occur during treatment with different composite materials used for clear aligner attachments. Two different flowable composites (AlignerFlow LC, VOCO GmbH, Cuxhaven, Germany; AlignerConnect, GC, Tokyo, Japan) will be used to bond the attachments in split mouth designs. To determine the composite for the upper right segment, a coin toss will be performed. The remaining quadrants will be bonded with alternate composite resin. After bonding, intraoral scans will be performed from baseline to 6 months for every 2 months. Stl files obtained from the scans will be imported to NemoStudio, to evaluate the volume loss of the attachments.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

SINGLE

Enrollment

Conditions

Composite Resins Clear Aligner Therapy

Interventions

Eligibility

Sex: ALLMin age: 14 Years

Medical Language ↔ Plain English

Inclusion Criteria: * Receiving Invisalign treatment at the Clinic of the Department of Orthodontics, Faculty of Dentistry, Marmara University * Mild to moderate crowding * Exhibiting good oral hygiene * No active dental caries * Voluntarily agreeing to participate in the study and signing the written informed consent form * Having no history of any syndrome, systemic disease, or allergy Exclusion Criteria: * Being pregnant or lactating * Presenting with advanced periodontal disease of a severity that could affect orthodontic treatment * Having prosthetic restorations within the oral cavity * Presenting with white spot lesions prior to orthodontic treatment

Outcomes

Primary Outcomes

Within-patient difference between composites in volume wear

After importing stl files to NemoStudio software, T0 (without attachments), T1(immediately after bonding) and T4(6 months) scans will be superimposed using surface registration. Using Booleans extractions, T0 model will be removed from T1 and T4, leaving only the attachments. Software will calculate the volumes of attachments in mm³.

Time frame: From baseline to 6 months