Which of the following principles of the cavity preparation is not considered much in modern methods of restorative dentistry? 1) Extension for prevention 2) Convenient form 3) Removal of the undermined enamel 4) Removal of the carious dentin
Conservative DentistryAnswer: 1
Efficiency of carbide bur increases by 1) Negative or Zero rake angle 2) 90 degree edge angle 3) At high angle 4) All of the above
Conservative DentistryAnswer: 4
The advantage of glass ionomer cement reinforced with metal particles is 1) Decreased strength but biocompatibility 2) Increased resistance to abrasion 3) Better colour 4) Ease of manipulation
Conservative DentistryAnswer: 2
Resin modified glass ionomer is designed to 1) Provide rapid setting to minimze cement acidity allowing early finishing 2) Reduce the rate of fluoride release 3) Reduce the cost of the product 4) Changing the translucency of the products
Conservative DentistryAnswer: 1
The order of placement of materials in deep caries from pulpal side 1) Cavity varnish, calcium hydroxide and zinc phosphate base 2) Calcium hydroxide, varnish and zinc phosphate base 3) Zinc phosphate, varnish and calcium hydroxide 4) There is no definite order
Conservative DentistryAnswer: 2
When using the acid etch technique to restore a Class IV fracture, exposed dentin should first be covered with 1) Varnish 2) Calcium hydroxide 3) Phosphoric acid 4) ZOE cements
Conservative DentistryAnswer: 2
Primary determinant of the outline form in class V preparation 1) Height of the gingival crest 2) Extension of the caries 3) Type of the restorative material 4) Teeth anatomy
Conservative DentistryAnswer: 2
When air alone is used as a coolant, it may result in all except 1) Dehydrating of the tooth 2) Drawing of odontoblasts into the tubules 3) Supercooling the tooth 4) Producing hypsersensitivity
