DHYG 312 FINAL | Questions with 100% Verified Answers | Latest Update
Question: Primary dentition
Answer:
- Formation of the primary teeth begins in utero
- Average age after birth when the enamel is completely formed before the date of
eruption
Question: Mixed or Transitional Dentition
Answer:
- Occurs b/w 6 and 12 years when primary teeth are being exfoliated and permanent
teeth erupt
- Succedaneous teeth are permanent teeth that erupt into the position of exfoliated
primary teeth
Question: Permanent Dentition
Answer:
- 32 teeth that replace the primary teeth and serve throughout life.
- Roots are completely formed about 3 years after eruption into the oral cavity
- Table 16-1 Tooth development and Eruption: permanent teeth
Question: Attrition
Answer:
-Mechanical wear due to tooth to tooth contact, bruxism
-More attrition is seen in men than women, often associated with increasing age
-Facet: small shiny, flat, worn spot on the surface of a tooth
-gradual reduction in cusp height; flattening of incisal or occlusal plane
-Staining exposed dentin
Question: Abrasion
Answer:
-Mechanical wear due to foreign objects: stiffness of toothbrush bristles
-Risk: pipe smoking, chewing pens, betel nut chewing, and pica (eating nonfood items)
,Question: Erosion
Answer:
-Chemical wear process due to acidic environment
-Exogenous: acidic food
-Endogenous: eating disorders (bulimia), gastroesophageal reflux disease (GERD),
alcohol abuse
-Smooth, shallow, hard, shiny (in contrast to dental caries, in which appearance is soft and
discolored)
-May occur in combination with dental caries, calculus, or dental restorations
Question: Root caries
Answer:
A soft, progressive lesion of cementum and dentin that involves bacterial infection, tends to be
shallow and spread laterally. Tooth needs to present with recession.
Question: Initial lesion
Answer:
a clearly demarcated discoloration (light/ dark brown or black) below the cementoenamel
junction with no cavitation.
Question: Moderate/ Extensive Lesion
Answer:
discolored area on the root surface with cavitation. May have a leathery texture.
Question: Risk Factors
Answer:
age, history of root caries, # of teeth present, poor oral biofilm removal
Question: carious lesion
Answer:
microorganisms, fermentable carbohydrate, and a susceptible tooth surface.
Question: primary dental caries (original caries)
Answer:
Streptococcus mutans and lactobacillus
, Question: Recurrent carries
Answer:
under restorations
Question: G. V. Black's classification
Answer:
Used for carious lesions, cavity preparations and finished restorations
Question: G. V. Black's classification (CHART)
Answer:
Question: Occlusion
Answer:
Static occlusal relationships. The maximum intercuspation or contact of the teeth of the
opposing arches
Question: Malocclusion
Answer:
Any deviation from the physiologically acceptable relationship of the maxillary arch and/or
teeth to the mandibular arch and/or teeth
Question: Primary dentition
Answer:
- Formation of the primary teeth begins in utero
- Average age after birth when the enamel is completely formed before the date of
eruption
Question: Mixed or Transitional Dentition
Answer:
- Occurs b/w 6 and 12 years when primary teeth are being exfoliated and permanent
teeth erupt
- Succedaneous teeth are permanent teeth that erupt into the position of exfoliated
primary teeth
Question: Permanent Dentition
Answer:
- 32 teeth that replace the primary teeth and serve throughout life.
- Roots are completely formed about 3 years after eruption into the oral cavity
- Table 16-1 Tooth development and Eruption: permanent teeth
Question: Attrition
Answer:
-Mechanical wear due to tooth to tooth contact, bruxism
-More attrition is seen in men than women, often associated with increasing age
-Facet: small shiny, flat, worn spot on the surface of a tooth
-gradual reduction in cusp height; flattening of incisal or occlusal plane
-Staining exposed dentin
Question: Abrasion
Answer:
-Mechanical wear due to foreign objects: stiffness of toothbrush bristles
-Risk: pipe smoking, chewing pens, betel nut chewing, and pica (eating nonfood items)
,Question: Erosion
Answer:
-Chemical wear process due to acidic environment
-Exogenous: acidic food
-Endogenous: eating disorders (bulimia), gastroesophageal reflux disease (GERD),
alcohol abuse
-Smooth, shallow, hard, shiny (in contrast to dental caries, in which appearance is soft and
discolored)
-May occur in combination with dental caries, calculus, or dental restorations
Question: Root caries
Answer:
A soft, progressive lesion of cementum and dentin that involves bacterial infection, tends to be
shallow and spread laterally. Tooth needs to present with recession.
Question: Initial lesion
Answer:
a clearly demarcated discoloration (light/ dark brown or black) below the cementoenamel
junction with no cavitation.
Question: Moderate/ Extensive Lesion
Answer:
discolored area on the root surface with cavitation. May have a leathery texture.
Question: Risk Factors
Answer:
age, history of root caries, # of teeth present, poor oral biofilm removal
Question: carious lesion
Answer:
microorganisms, fermentable carbohydrate, and a susceptible tooth surface.
Question: primary dental caries (original caries)
Answer:
Streptococcus mutans and lactobacillus
, Question: Recurrent carries
Answer:
under restorations
Question: G. V. Black's classification
Answer:
Used for carious lesions, cavity preparations and finished restorations
Question: G. V. Black's classification (CHART)
Answer:
Question: Occlusion
Answer:
Static occlusal relationships. The maximum intercuspation or contact of the teeth of the
opposing arches
Question: Malocclusion
Answer:
Any deviation from the physiologically acceptable relationship of the maxillary arch and/or
teeth to the mandibular arch and/or teeth
