Antibacterial Effect of Diode Laser Clinical Trial
Official title:
Diode Laser Cavity Disinfection (A Six Month Randomized Clinical Trial).
This study will be conducted to assess antibacterial effect of the diode laser in deep carious cavity after step wise excavation using the bacteriological assessment method.
each patient should have at least two deep carious lesions The first clinical step in all
teeth will be the opening of the cavity and the removal of undermined enamel . Caries at the
lateral walls of the cavity and at the enamel-dentin junction was completely removed with
excavators and/or round carbide burs at low speed. Subsequently, the central cariogenic
biomasses and superficial part of the necrotic and demineralized dentin were removed. then
excavation continued until the pulp exposure would occur with further excavation; thus, a
layer of soft carious dentin was left on the cavity floor adjacent to the pulp wall.
A dentine samples will be then collected from the base of the cavity using sterile spoon
excavator from the both groups for baseline bacteriological assessment and another sample
will be taken after disinfection with diode laser in the intervention group .
In the two groups The remaining innermost layer of carious dentin are covered with calcium
hydroxide The cavity was then sealed with restorative material (resin modified glass ionomer)
after a 6 month period. This time was considered adequate for calcium hydroxide to exert its
effect and for the pulp to respond with possible formation of tertiary dentin. The teeth were
followed up every month and the integrity of the temporary restoration checked. After this
interval of 6 months. After the rubber dam application, the temporary filling is removed
samples are collected and the teeth are finally restored
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