At birth, the oral cavity usually contains: A. S. mutans only B. No micro organism C. S. mutans and S. salivavis D. Lactobacilli and S. mutans

At birth, the oral cavity usually contains:
A. S. mutans only
B. No micro organism
C. S. mutans and S. salivavis
D. Lactobacilli and S. mutans
by

1 Answer

Answer :

B. No micro organism
by

Related questions

Patient presents with rapidly progressive root caries on many teeth. Which of the following laboratory results would be a possible indicator of this? A. Stimulated salivary secretion rate of 1.5ml/min B. S. mutans concentration of 105 organism/ml C. A plaque sample containing 5% S. mutans D. A lactobacilli concentration of 105 organism/ml E. Salivary buffering PH 5.5 > 100000 CFU/ml high caries incidence

Description : Patient presents with rapidly progressive root caries on many teeth. Which of the following laboratory results would be a possible indicator of this? A. Stimulated salivary secretion rate of 1.5ml/min B. ... of 105 organism/ml E. Salivary buffering PH 5.5 > 100000 CFU/ml high caries incidence

Last Answer : E. Salivary buffering PH 5.5

A patient is resistant to caries but has a periodontal disease. In this case, sucrose in diet is important because: A. Sucrose is greatly involved in plaque development B. S. mutans produces Levans frictions which are used by periodontal pathogens C. The streptococcus mutans cannot survive with a continual supply of sucrose D. Existing plaque must continue to get sucrose in order to grow

Description : A patient is resistant to caries but has a periodontal disease. In this case, sucrose in diet is important because: A. Sucrose is greatly involved in plaque development B. S. mutans produces ... with a continual supply of sucrose D. Existing plaque must continue to get sucrose in order to grow

Last Answer : A. Sucrose is greatly involved in plaque development

The MOST common sites for squamous carcinoma in the oral cavity are:** A. Palate and gingivae B. Tongue and floor of the mouth C. Tongue and palate

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Last Answer : B. Tongue and floor of the mouth

Which cement is less soluble in the oral cavity: A. Polycarboxylate B. Zinc phosphate C. Silicate phosphate D. GIC

Description : Which cement is less soluble in the oral cavity: A. Polycarboxylate B. Zinc phosphate C. Silicate phosphate D. GIC

Last Answer : D. GIC

.Which of the following is true: A. Antibiotics are useful in the treatment of periodontitis B. Trauma from occlusion causes thickening of the marginal gingivae C. Periodontitis is the primary cause of teeth lost after the age of 35. D. All periodontal pockets can be identified by x-ray E. Periodontitis is the most common disease in the oral cavity

Description : .Which of the following is true:  A. Antibiotics are useful in the treatment of periodontitis   B. Trauma from occlusion causes thickening of the marginal gingivae  C. Periodontitis is the ... can be identified by x-ray  E. Periodontitis is the most common disease in the oral cavity

Last Answer : E. Periodontitis is the most common disease in the oral cavity

An old male presents complaining of having numerous white lesions in the oral cavity within past few days. Prior to this the family physician prescribed chlorite tetracycline for an upper respiratory infection, the patient is taking this antibiotic for the past two weeks; lesions are relatively non-painful, slightly elevated, adhered plaques on the lip mucosa, buccal mucosa and the tongue. MOST LIKELY to be:

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Last Answer : Moniliasis (Which is candidiasis) 

.What is the most common malignant lesion that occurs in the oral cavity: A. Ameloblastoma B. Squamous cell carcinoma C. Osteosarcom

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Benign migratory glossitis or Geographic Tongue, manifests itself in the oral cavity as, A. Irregularly outlined areas of hyperkeratosis of the dorsal surface of the tongue B. Furrows outlined the dorsal surface radiating out from a central groove in the centre of the tongue C. Loss (atrophy) of filiform papillae in multiple irregularly outlined areas D. Irregularly outlined erythematous area of hyper trophic fungiform E. A fibrinous exudate on the dorsal surface F. Grooves (fissures) radiating from a central fissure G. Irregular area in the midline of the tongue

Description : Benign migratory glossitis or Geographic Tongue, manifests itself in the oral cavity as, A. Irregularly outlined areas of hyperkeratosis of the dorsal surface of the tongue B. Furrows outlined the ... (fissures) radiating from a central fissure G. Irregular area in the midline of the tongue

Last Answer : C. Loss (atrophy) of filiform papillae in multiple irregularly outlined areas

Why is the frequency of carbohydrate intake more important than the quantity: A. Low number of streptococcus mutans B. Hetero formation is better at low sugar concentration C. Homo formation is better at high sugar intake D. Restricted diffusion of acid through plaque

Description : Why is the frequency of carbohydrate intake more important than the quantity: A. Low number of streptococcus mutans B. Hetero formation is better at low sugar concentration C. Homo formation is better at high sugar intake D. Restricted diffusion of acid through plaque

Last Answer : D. Restricted diffusion of acid through plaque

The MOST frequently synthesized substance by Streptococcus mutans is: A. Liven B. Fructose C. Glucan D. Glycogen

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Last Answer : C. Glucan

ariogenicity of Streptococcus mutans is because of the production of: A. Glucans B. Levans C. Fructans D. Sucrose

Description : ariogenicity of Streptococcus mutans is because of the production of: A. Glucans B. Levans C. Fructans D. Sucrose

Last Answer : A. Glucans

.In developing plaque; the adhesive polymer produced by streptococcus mutans is synthesis from: A. Glucose B. Fructose C. Sucrose D. Lactose E. Amylose

Description : .In developing plaque; the adhesive polymer produced by streptococcus mutans is synthesis from: A. Glucose B. Fructose C. Sucrose D. Lactose E. Amylose

Last Answer : C. Sucrose

Streptococcus mutans utilises which subtract to form dextran, Refer to Boucher Microbiology A. Glucose B. Fructose C. Sucrose D. Amylopectin E. Dextrans

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Which is TRUE about disinfectant solutions:** A. It destroys all pathogenic micro organism including high resistant B. It reduces the number of micro organism to a non infective level C. It kills all pathogens but not spores.

Description : Which is TRUE about disinfectant solutions:** A. It destroys all pathogenic micro organism including high resistant B. It reduces the number of micro organism to a non infective level C. It kills all pathogens but not spores.

Last Answer : B. It reduces the number of micro organism to a non infective level

442.Which is TRUE about disinfectant solutions:** A. It destroys all pathogenic micro organism including high resistant B. It reduces the number of micro organism to a non infective level C. It kills all pathogens but not spores.

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Last Answer : B. It reduces the number of micro organism to a non infective level

The causative micro organism for Herpetic gingivostomatitis is: A. Herpes simplex bacteria B. Herpes simplex virus C. Herpes zoster virus D. Borrelia vincentii

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What is Miller’s theory about A. Acidogenic micro-organism B. Proteolytic

Description : What is Miller’s theory about A. Acidogenic micro-organism B. Proteolytic

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A 12 years-old girl complains of sore mouth, she has painful cervical lymphadenitis and a temperature of 39°c, oral examination shows numerous yellow grey lesions. What is the MOST LIKELY diagnosis: A. Measles (koplick spots are present next to the molars usually) B. Erythema multiform se da general mentor hombres mas de 20 años en labios C. Herpetic gingivostomatitis D. Stevens-Johnson syndrome

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Last Answer : C. Herpetic gingivostomatitis

Which one of the following is true about oral hairy leukoplakia?** ADC M07 A. Associated with HIV virus infection and is commonly seen on the dorsal of the tongue B. Associated with HIV virus infection and is commonly seen on the lateral side of the tongue C. Usually caused by Candida species D. Always associated with trauma to the lateral side of the tongue E. Always associated with pernicious anaemia

Description : Which one of the following is true about oral hairy leukoplakia?** ADC M07 A. Associated with HIV virus infection and is commonly seen on the dorsal of the tongue B. Associated with HIV ... Always associated with trauma to the lateral side of the tongue E. Always associated with pernicious anaemia

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The bur should be tilted lingually when preparing the occlusal surface of class II cavity on a mandibular first premolar in order to: I. Remove unsupported enamel II. Prevent encroachment on the buccal pulp horn III. Prevent encroachment on the lingual pulp horn IV. Maintain dentinal support of the lingual cusp A. I and II B. I and III C. II and IV D. III and IV E. IV only

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Last Answer : C. II and IV

When preparing a class III cavity for composite restoration; in which situation should acid itching be used: A. Always should be performed to minimise marginal leakage B. Should not be performed because it might damage the adjacent tooth C. When extra retention is required D. Only in situations where cavity is shallow to avoid pulp irritation

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What is TRUE about Benzodiazepine and diazepam in 5-10mg oral dose used for oral sedation in dentistry: A. Good analgesic effect if given 1 hour prior to dental sessions B. Would be reversed by flumazepil because it is a Benzodiazepam C. Post operative headache D. There is a profound amnesic action and no side affects

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Last Answer : B. Would be reversed by flumazepil because it is a Benzodiazepam

Patient has hot and cold sensation and pain on percussion after the filling of class III Cavity with GIC base and composite. What will be possible cause – 1) bacterial microleakage 2) mechanical trauma of cavity cutting 3) Exothermic reaction while setting GIC

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Occlusal cavity with extension of the buccal fissure is classified as, A. Class II B. Class III C. Class I D. Class V

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In preparing a very small proximal amalgam cavity on a molar tooth what would consider, A. Extend the cavity to the gingival margin B. Extend the cavity beyond the contacts areas C. Achieve at least 2mm in dentine D. Extend cavity just beyond dento enamel junction

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While you finish a class I cavity, the enamel is sound but you notice a brown line in the dentine and on the Dento-enamel junction, what is your response, A. You leave it and complete the final restoration B. You extend your preparation and clean it C. You apply a cover of varnish

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In the preparation of Premolar class I cavity what is the best way of getting retention, A. Slightly done undercut of the mesial and distal walls B. Slightly done undercut of the buccal and lingual walls C. The convergence of the cavity walls

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A patient complains of sensitivity, on examination you find a composite filling restoring a good cavity preparation without any secondary caries; what is your next step: A. Extirpate the pulp that is obviously inflamed B. Place ZOE dressing to sedate the pulp C. Ask patient to come back in six months D. Repeat restoration

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In cavity preparation 1mm below DEJ what is seen: A. More dentinal tubules, some intertubular and peritubular B. Some dentinal tubules, more intertubular and less peritubular C. More peritubular, some intertubular and dentinal tubular D. Equal amount of dentinal tubules, intertubular and peritubular

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Last Answer : B. Some dentinal tubules, more intertubular and less peritubular

To achieve optimum cavity preparation, which of the following factors of internal anatomy must be considered in root canal treatment: A. Outline form B. The age and shape of pulp chamber; in addition to the direction of individual root canals. C. Internal external relationship D. Intra-coronal preparation E. None of the above

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The principle cause of failure of amalgam restoration is: A. Improperly prepared amalgam B. Improper cavity preparation C. Perio involvement D. Particles of amalgam

Description : The principle cause of failure of amalgam restoration is: A. Improperly prepared amalgam B. Improper cavity preparation C. Perio involvement D. Particles of amalgam

Last Answer : B. Improper cavity preparation

Sensitivity to hot and cold foods soon after cavity preparation and placement of GIC and composite resin in an upper incisor tooth is due to: A. Mechanical trauma due to cavity preparation B. Chemical C. Heat from GIC settings

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Last Answer : A. Mechanical trauma due to cavity preparation

What is the danger of using air as a cooler during cavity cutting: A. Hypersensitivity B. Odontoblast is drawn into the tubule

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Last Answer : B. Odontoblast is drawn into the tubule

The pulpal floor of the Class II cavity for a mandibular first premolar should be: GA.Parallel to occlusal plane B. Perpendicular to long axis C. Tilted lingually

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The best method of cleaning and toilet cavity: A. Alcohol B. Citric acid C. Water D. Organic acid

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In class II restorations, all of the following are considered to occur as probable causes of periodontal problems except: A. Flat ridge B. Faulty or not proper contour C. Not properly polished restoration D. Cervical wall is too deeply apical E. Overextension of lining in cavity

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Last Answer : E. Overextension of lining in cavity

Why can Class IV gold not be used in cavity as a filling material: A. Can not be polished “burnished” B. The corrosive properties

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Last Answer : A. Can not be polished “burnished”

Upper first premolar with MO cavity; what is important about the application of the matrix band (the question has also shown too as ….What is complicated by): A. The mesial concavity of the root surface B. Small lingual pulp C. High buccal pulp horn D. High lingual pulp horn E. Concavity of distal root surface

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Last Answer : A. The mesial concavity of the root surface

At which angle to the external surface of proximal cavity walls should a class II preparation for amalgam be finished A. An acute angle B. An obtuse angle si es el cajon proximal C. A right angle D. An angle of 45°

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Last Answer : B. An obtuse angle si es el cajon proximal

the pulp horn most likely to be exposed in the preparation of large cavity in permanent molar tooth is,CHECK ITS VERY CONTROVERSIAL QUESTION A. Mesio–Lingual in upper first molars B. Mesio–Buccal in upper first molars C. Disto–buccal in lower first molars D. Mesio–Lingual in lower first molars E. Mesio- Buccal in lower first molar

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Last Answer : B. Mesio–Buccal in upper first molars

The best way to clean a cavity before the placement of GIC is,** A. H2O2 B. Phosphoric Acid C. Polyacrylic acid 10% sturdavent 563pag

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Last Answer : C. Polyacrylic acid 10% sturdavent 563pag

Before filling a class V abrasion cavity with GIC you should(+adc March07) A. Clean with pumice, rubber cup, water and weak acid B. Dry the cavity thoroughly before doing anything C. Acid itch cavity then dry thoroughly

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Last Answer : A. Clean with pumice, rubber cup, water and weak acid

A newborn a. Contains indigenous micro biota before birth. b. Remains sterile for many weeks after birth, c. Becomes colonized soon after conception. d. Is colonized with many common micro biotas within a few days after birth.

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Oral mucosal pigmentation; what is TRUE: a. Commonly depends on ethnicity. b. Commonly an amalgam tattoo. c. Commonly oral melanoma. d. Commonly melanotic naevus.

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Last Answer : a. Commonly depends on ethnicity.

A 13 years-old has enlarged gingivae; gives a history of Dilantin sodium what is you treatment: a. Oral prophylaxis and gingivoplastic. b. Oral prophylaxis, scaling, root planning. c. Stop medication.

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.In minor oral surgery which is TRUE in regard to antibiotics: a. Amoxil is satisfactory against most oral infection. b. Metronidazole and Amoxil have the same penetrating power. c. It is evident that it will reduce post operative swelling.

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In the case of malignant melanoma occurring intra orally, which of the following is true: a. Uncommon on the palate when occurs intra orally. b. Should not biopsied, as this will increase metasis . c. The 5 year survival rate is 20%. d. The incidence of oral melanoma is the same as those on the skin. e. Commonly occurs intra orally.

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Last Answer : c. The 5 year survival rate is 20%.

Denture stomatitis is commonly associated with, A. The continuous wearing of removable orthodontic appliances in otherwise healthy patient B. The proliferation of hypertrophic tissue at the denture periphery C. The overgrowth of some constituents of oral normal microflora D. Allergy to denture base material

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Which of the following is an expansile lesion of the oral mucosa, A. Keratocyte more expansion B. Radicular cyst C. Cementoma

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The most common cause of caries in children is, A. Soft diet B. High intake of carbohydrate C. Poor oral hygiene

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