COMPARISON OF SECTIONAL MATRIX VERSUES CIRCUMFERENTIAL MATRIX FOR RECONSTRUCTION OF PROXIMAL CONTACT IN CLASS 2 RESTORATIONS

Class II caries affects proximal surfaces of premolars and maintain their anatomical proximal contact of tooth, is important to avoid food impaction in the interdental area for protection of periodontium and occurrence of secondary carious lesion.Different types of Matrix band system are used to restore tooth cavities with missing proximal walls, including flat or pre-contoured bands, retainer-fixed circumferential systems, and sectional matrices, and either metal or plastic matrices which produces good contours and contacts for use with amalgam and can also be employed for insertion of composite resin.This study aimed at assessing the influence of different matricing techniques :either sectional matrix or circumferential matrix and the influence of operator experience on reproduction of optimum proximal contacts for posterior proximal resin composite restorations.

Study Overview

• Status: Recruiting
• Conditions: Tooth Decay
• Intervention / Treatment: Device: Sectional matrix; Device: Circumferential matrix

Detailed Description

Local anesthesia will be administrated, and the whole quadrant containing the offending tooth will be isolated by using a rubber dam.After caries removal and cavity preparation, matrix systems will be applied by dentist ; using either a sectional matrix system and circumferential matrix system.A properly sized wedge will be used with both systems to secure both matrices in place cervically and to prevent gingival overhangs , Resin composite restorations will be completed according to the manufacturer's instructions. Selective enamel etching will be performed by using etchant followed by applying Single Bond Universal adhesive to the entire surface of the enamel and dentin. Then, a thin layer of flowable composite will be applied to ensure adaptation at the gingival margin. Finally, prepared cavities will be restored by using resin composite. using the centripetal technique to build a proximal wall initially followed by successive cusp building. Restorations will be finished by using a flame-shaped finishing stone and polished, and the occlusal contact points will be checked by using a articulating paper. Tightness of proximal contacts will be evaluated using dental floss . For assessment of the restoration, the patients will be sitting in a dental unit with a standardized seating position, which will be reproduced by the unit's preset positioning system, and assessors evaluated the proximal contact by using unwaxed dental floss following theFDI recommendations accordingly to be either optimum, tight, or open contact.Proximal contacts will be categorized as optimum, open, and tight; if the dental floss passed through the contact area as natural dentition on the other side, it will be considered as an optimum contact point. Open contact points will be considered when the dental floss passed through the contact area without resistance; however, when the dental floss could not be passed at all or tore, proximal contact will be considered as tight.

• Study Type: Interventional
• Enrollment (Anticipated): 80
• Phase: Not Applicable

Contacts and Locations

Study Locations

• Pakistan
  • Islamabad, Pakistan, 04403
    • Recruiting
    • Pims ,school of dentistry

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 60 years (Adult)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

Tooth with compound class 2 cavities Patient with good general health. Patient with minimum age of 18 years. Fully erupted occluding premolar and molar teeth.

Exclusion Criteria:

Tooth complex class 2 cavities. Tooth with severe periodontal disease. Diastema between posterior teeth. Third molars are excluded.

. Tooth mobility greater than 1 mm.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Sectional matrix band; precontoured sectional matrix band	Device: Sectional matrix; The sectional matrix is the best way to achieve a strong contact point in Class II restorations with composite resin in the posterior dental sector. The pre-wedging is essential to get a separation between teeth which avoid the matrix deformation during its insertion; Device: Circumferential matrix; Circumferential matrix (thickness 0.038mm) ,the band encircle the tooth and secured by retainer on the buccal and lingual aspect
Active Comparator: Circumferential matrix band; Circumferential matrix band applied by tofflemire retainer	Device: Sectional matrix; The sectional matrix is the best way to achieve a strong contact point in Class II restorations with composite resin in the posterior dental sector. The pre-wedging is essential to get a separation between teeth which avoid the matrix deformation during its insertion; Device: Circumferential matrix; Circumferential matrix (thickness 0.038mm) ,the band encircle the tooth and secured by retainer on the buccal and lingual aspect

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Tightness of proximal contact	Proximal contact either optimum, tight, or open contact by using dental floss	immediately after the procedure

Collaborators and Investigators

• Sponsor: Pakistan Institute of Medical Sciences

Study record dates

Study Major Dates

• Study Start (Actual): August 27, 2022
• Primary Completion (Anticipated): March 2, 2023
• Study Completion (Anticipated): March 10, 2023

Study Registration Dates

• First Submitted: February 9, 2023
• First Submitted That Met QC Criteria: February 9, 2023
• First Posted (Actual): February 17, 2023

Study Record Updates

• Last Update Posted (Actual): February 17, 2023
• Last Update Submitted That Met QC Criteria: February 9, 2023
• Last Verified: February 1, 2023

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Stomatognathic Diseases; Tooth Demineralization; Tooth Diseases; Dental Caries
• Other Study ID Numbers: SOD/ERB/2023/18

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