Performance Of Class I Composite Restorations After Cavity Finishing By Air Abrasion Versus Diamond Stone

NCT ID: NCT06107218

Last Updated: 2023-11-18

Basic Information

• Recruitment Status: NOT_YET_RECRUITING
• Clinical Phase: NA
• Total Enrollment: 78 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2023-11-30
• Study Completion Date: 2025-06-30

Brief Summary

The aim of the study is to reveal the performance of the resin composite restorations after finishing the cavity walls and margins using bioactive glass air abrasion particles in comparison to the routine finishing with the finishing diamond stone according to the FDI criteria for post operative sensitivity, marginal adaptation, marginal discoloration, secondary caries, and retention.

Detailed Description

Intraoral air abrasion is the process of altering the surface of the tooth structure through the use of abrasive particles propelled by compressed air or other gasses. The use of intraoral air abrasion has become practical with devices that simultaneously output abrasive particles and water to control the spread of the particles. There are different types of abrasive particles maybe used depending on the clinical application for which the intraoral air abrasion is being performed. Intraoral air abrasion may also be used as a tool for dental prophylaxis, often called air polishing.

Different particles could be incorporated into air abrasion devices according to the intended use of them, such as aluminum oxide (alumina), Calcium Sodium Phosphosilicate (Biactive Glass) and Sodium bicarbonate. To obtain maximum cutting efficiency, the particle should be hard enough to indent the substrate it abrades, and irregular in shape with a sharp cutting edge. Round and smooth particles possess poor abrasive properties, so it may be used for polishing needs "air- polishing". Increased air pressure provided an increased number and velocity of the particles. Abrading power must be proportional to kinetic energy of the particles, which is the function of mass and velocity of the particle. The cutting efficiency of air abrasion depends on several criteria, such as: size, shape, hardness, density of the particles and air pressure.

Aluminum oxide (alumina) are the most abrasive type of particles used. They are irregular in shape with different particle sizes. Intraoral sandblasting with alumina particles (Al2O3) was first described in 1945 by Black. Initially, it was reported that the bond strength to the tooth surface improved, also confirmed by recent investigations, and some authors adopted its use in clinical procedures even after preparing the cavity with rotating instrument. A bioactive glass abrasive, is also commercially available but indicated for the purpose of tooth polishing. Some work has also showed potential for it to have selective cutting properties. However, its cutting time can take 2-3 times longer than alumina, making it clinically indicated for cavity finishing and not cutting.

Conditions

Abrasion, Dental; Class I Dental Caries

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: TRIPLE

Study Groups

Diamond Stone group (Comparator)

Class I cavities will be finished using 20-30 μm grit extra fine (EF) yellow coded diamond stone with maximum rotational speed 300,000 min -1.

Group Type: ACTIVE_COMPARATOR

Diamond Stone.

Intervention Type: OTHER

Finishing of cavity walls using Diamond Stone.

Bioactive Glass Air Abrasion group (Intervention)

Class I cavities will be finished by AquaCare Air Abrasion Device using bioactive glass air-abrasion particles (a mix of 30-60-90 μm particles). The nozzle of the air abrasion device will be 0.6 in diameter and angulated at 90° to the occlusal surface with a distance away from the tooth about 2-3 mm. The device will be used in a dynamic motion with 60 psi (4 Bar) adjusted pressure for 3 seconds.

Group Type: ACTIVE_COMPARATOR

Bioactive Glass Air Abrasion Particles.

Intervention Type: OTHER

Finishing of cavity walls by AquaCare Air Abrasion Device using Bioactive Glass Air Abrasion Particles.

Interventions

Bioactive Glass Air Abrasion Particles.

Finishing of cavity walls by AquaCare Air Abrasion Device using Bioactive Glass Air Abrasion Particles.

Intervention Type: OTHER

Diamond Stone.

Finishing of cavity walls using Diamond Stone.

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• Good oral hygiene (plaque index score 0 or 1).
• Absence of abnormal occlusion habits (e.g. bruxism, nail biting, tooth clenching and mouth breathing).
• Patients approving to participate in the study.

Exclusion Criteria

• Patients with known allergic or adverse reaction to the tested materials.
• Systematic disease that may affect participation.
• Xerostomic patients.

• Minimum Eligible Age: 25 Years
• Maximum Eligible Age: 45 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: Yes

Sponsors

Cairo University

OTHER

Sponsor Role: lead

Responsible Party

Mahmoud Essam Mahmoud

Principal Investigator

Responsibility Role: PRINCIPAL_INVESTIGATOR

Central Contacts

Mahmoud E Mahmoud, BDS

Role: CONTACT

mahmoud.essam@dentistry.cu.edu.eg

01226692855

Asmaa A Yassen, Professor

Role: CONTACT

Asmaa.yaseen@dentistry.cu.edu.eg

01001912610

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Other Identifiers

Air Abrasion in Finishing

Identifier Type: -

Identifier Source: org_study_id