(A) Thickness of enamel and dentin
(B) Pulp chambers are longer
(C) Roots are flaring
(D) All of the above

(A) Mandibular first molar
(B) Maxillary first molar
(C) Mandibular second molar
(D) Maxillary second molar

(A) Mesiolingual
(B) Distolingual
(C) Mesiobuccal
(D) Distobuccal

(A) Can attack to smooth enamel surfaces
(B) Can produce insoluble extracellular polysaccharides
(C) Are the main causative agent
(D) Are secondary invaders

(A) Glycogen – like glucan
(B) Dextran-like glucan
(C) Mucopolysaccharide
(D) Amylopectin

(A) More than the patient with normal salivary flow
(B) unaffected
(C) less than the patient with normal salivary flow
(D) None of the above

(A) Two
(B) One
(C) Four
(D) Five

(A) Proteolytic chelation theory
(B) Proteolytic theory
(C) Acidogenic theory
(D) Autoimmune theory

(A) S. Sarcinus
(B) S. salivarius
(C) S. sanguis
(D) S. macae

(A) Lactobacillus
(B) Strep. mutans
(C) Actinomyces
(D) Strep. viridans