Clinical trial NCT05734027: COMPARISON OF SECTIONAL MATRIX VERSUES CIRCUMFERENTIAL MATRIX FOR RECONSTRUCTION OF PROXIMAL CONTACT IN CLASS 2 RESTORATIONS
Official title: COMPARISON OF SECTIONAL MATRIX VERSUES CIRCUMFERENTIAL MATRIX FOR RECONSTRUCTION OF PROXIMAL CONTACT IN CLASS 2 RESTORATIONS
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: NA
Conditions: Tooth Decay
Lead sponsor: Pakistan Institute of Medical Sciences
Sponsor class: OTHER_GOV
First posted: 2023-02-17
Enrollment: 80
Sex: ALL
Minimum age (years): 18
Maximum age (years): 60
Standard ages: ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: TREATMENT

Brief summary: 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.

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.

Eligibility criteria: 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.

Primary outcomes:
measure: Tightness of proximal contact
timeFrame: immediately after the procedure
Secondary outcomes:
Other outcomes:
Locations:
city: Islamabad
country: Pakistan
facility: Pims ,school of dentistry
Study officials:
References: