Oral Health and Dental Management

Effectiveness and efficiency of chemo-mechanical carious dentin removal

39^th Asia-Pacific Dental and Oral Care Congress

October 26-28, 2017 Osaka, Japan

Sultan Ali Alanazi

Al-Farabi College for Dentistry and Nursing, KSA

Posters & Accepted Abstracts: Oral Health Dent Manag

Abstract:

The aims of this in vitro study were both to determine the time necessary for removal of carious dentin (effi ciency) and the knoop hardness number (KHN) of the remaining dentin (eff ectiveness), using a chemo-mechanical method (carisolv) or hand excavation. 30 human molars were bisected through occlusal carious lesions into two equal halves. Each half was randomly excavated by hand in circular movements with a spoon excavator or using carisolv gel according to the manufacturerâ�?�?s instructions. Th e duration of carious dentin removal was recorded. Tooth sections were resin-embedded, ground fl at and polished. Dentin KHN was determined at distances of 100, 200, 300, 400 and 500 m from the cavity fl oor. Data were analyzed by Wilcoxonâ�?�?s test (�?±=0.01), ANOVA and Studentâ�?�?s t test (�?±=0.05). Th e median of the time necessary for chemo-mechanical excavation was signifi cantly greater than for hand excavation. KHN mean (�?±SD) at 100, 200, 300, 400, 500 �?µm for chemo-mechanical method were, respectively: 15.6 (�?±4.96), 18.0 (�?±6.22), 21.3 (�?±9.30), 24.3 (�?±9.25), 28.5 (�?±11.80) and for hand excavation were: 21.2 (�?±10.26), 23.4 (�?±9.49), 28.2 (�?±11.62), 31.0 (�?±12.17), 34.3 (�?±11.95). It may be concluded that hand excavation presented higher effi ciency and eff ectiveness than chemo-mechanical excavation.