Performance of Curing Times and Intensitis

Cairo University (CU)

Status: Completed

Conditions: Clinical Performance

Treatments: Device: High intensity light cure

Study type: Interventional

Funder types: Other

Identifiers

NCT05334901

OPR 22/3/2022

Details and patient eligibility

About

The aim of the study is to compare the effect of high intensity light cure (2200 mw/cm2) for 1 second with low intensity light cure (1200 mw/cm2) for 20 seconds on the clinical performance of bulk fill resin composite restorations in compound Class II cavities of posterior teeth

Full description

The prepared cavities will be conditioned with 35% phosphoric acid gel for15 seconds, then will be rinsed and dried with compressed air. Then application of universal adhesive system to all cavity with bond brush then light cured for 10 seconds using LED light curing unit (1200 mw/cm2). Extra-Fill bulk fill resin composite will be applied in onebulk increment and will be light polymerized for 1 second using (LED) light curing unit (2200 mw/cm2).for intervention group Extra-Fill bulk fill resin composite will be applied in one bulk increment and will be light polymerized for 20 seconds using (LED) light curing unit (1200 mw/cm2) fot control group

Enrollment: 28 patients

Sex: All

Ages: 20 to 40 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Permanent premolars or molars.
• Moderate to deep compound class II cavities.
• Vital with the positive reaction to a cold thermal stimulus.
• Absence of parafunctional habits

Exclusion criteria

• Teeth with clinical symptoms of pulpitis such as spontaneous pain or sensitivity to pressure.
• Non-vital teeth.
• Secondary carious lesions.
• Advanced periodontal disease

Trial design

Primary purpose: Treatment

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: Double Blind

---

28 participants in 2 patient groups

High intensity light cure

Experimental group

Description:

High intensity light curing (2200 mw/cm2)To achieve increased power and a wider spectrum for short exposure time (1 second) to overcome resin composite restoration techniques sensitivity and shorten the clinical procedure

Treatment:

Device: High intensity light cure

Low intensity light cure

Active Comparator group

Description:

Conventional light curing (1200 mw/cm2) for long exposure time (20 seconds) to achieve the slower rate of conversion allowing for a better flow of the material, which decreases contraction stress in the filling material

Treatment:

Device: High intensity light cure