Clinical Evaluation of Sectional Matrix Versus Circumferential Matrix for Reproduction of Proximal Contact

Clinical Evaluation of Sectional Matrix Versus Circumferential Matrix for Reproduction of Proximal Contact by Undergraduate Students and Postgraduate Dentists: Randomized Controlled Trial

Status

Completed

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT03795727

Enrollment

Registered

2019-01-08

Start date

2020-01-20

Completion date

2020-03-12

Last updated

2020-04-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Proximal Contact

Brief summary

The aim of this study is to evaluate the effects of different matricing techniques either sectional matrix or circumferential matrix on reproduction of optimum proximal contacts and contours during restoration of class II cavities with resin composite by undergraduate students or postgraduate dentists.

Interventions

DEVICEMD ring and precontoured sectional matrix by TOR VM

MD ring (separation ring) and precontoured sectional matrix (thickness 0.035mm hard) and a wedge was used to secure matrix in place

DEVICECircumferential matrix and tofflemire retainer by Kerr

Circumferential matrix (thickness 0.038mm) applied by tofflemire retainer and secured in place with wedge

Study design

Allocation

RANDOMIZED

Intervention model

PARALLEL

Primary purpose

TREATMENT

Masking

DOUBLE (Subject, Outcomes Assessor)

Eligibility

Sex/Gender

ALL

Age

18 Years to 40 Years

Healthy volunteers

Yes

Inclusion criteria

* Compound class II cavities * Good oral hygiene * No spacing or crowding * Healthy peridontium

Exclusion criteria

* Complex class II cavities * Poor oral hygiene * Spacing or crowding * Evidence of peridontal disease

Design outcomes

Primary

Measure	Time frame	Description
Proximal contact	Up to 3 hours from randomization till contact is restored	Reproduction of proximal contact either optimum, tight or loose (Categorical)

Countries

Egypt

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026