Dental Anatomy Final Exam review Exam with
complete solutions (2022 study guide)
Describe the difference between the Incisal Ridge and Incisal Edge
Incisal edge: sharp line that delineates facial from lingual forms
Incisal ridge: covers entire incisal surface. Has more surface area then incisal edge.
When does calcification begin? By what time have all primary teeth begun calcification
13-16 weeks in utero calcification commences
18-20 weeks in utero: all primary teeth have initiated calcification
What is the order of the first evidence of Calcification in the Primary dentition?
Central incisor → 1st Molar → Lateral incisor → Canine → 2nd Molar
Which Primary teeth are First to have a complete root? When?
Mx Central incisor
Md Central incisor
Md Lateral incisor
All at 1.5 years
Which Primary teeth are last to have a complete root? When?
Mx and Md canines
3.25 years of age
By what age does anterior tooth spacing stop?
6 years of age
Which Permanent tooth is the 1st to erupt into the oral cavity? What age?
Permanent 1st molars (Md precedes Mx slightly)
6 years of age
By age 6, which Permanent teeth have Crowns that are Completely calcified?
Central and Lateral incisors
1st Premolars
1st Molars
(Md and Mx for all of these)
What is the Chronology of Calcification of the Permanent Mandibular teeth?
1st Molar → Incisors → Canines → Premolars → 2nd Molar → 3rd Molar
What is the Chronology of Calcification of the Permanent Maxillary teeth?
1st Molar → Central incisor → Canine → Lateral incisor → Premolars → 2nd Molar →
3rd Molar
What is the Order of Eruption for the Permanent Mandibular teeth?
1st Molar → Central incisor → Lateral incisor → Canine → 1st Premolar → 2nd
Premolar → 2nd Molar → 3rd Molar
By 8 years of age, what is the state of the 2nd and 3rd Permanent Molars?
2nd molar has not yet erupted
3rd molar has not yet begun calcification
What are the 4 classifications of Cusp Form?
Haplodont: single cone
Triconodont: 3 cusps in straight line
, Tritubercular Molar: 3 cusps in primary triangle
Quadritubercular Molar: 4 cusps in rectangular or rhomboid form
From a Proximal aspect of the Mandibular teeth, which tooth has the greatest and which
tooth has the least Proximal Reference angle? give the specific angle measurement
Greatest angle: Lateral incisor at 23º
Least angle: 2nd Premolar at 6º
From a Facial aspect of the Mandibular teeth, which tooth has the greatest and which
tooth has the least Facial Reference angle? give specific measurement
Greatest angle: 2nd Molar at 14º
Least angle: Lateral incisor at 0º
What is the Facial reference angle of the Mandibular 2nd Premolar?
9º
List the Location of the Proximal Contact areas of the Maxillary Anterior teeth
Midline: Incisal third
Distal of central: Junction of incisal and middle thirds
Mesial of lateral: Junction of incisal and middle thirds
Distal of lateral: Middle third
Mesial of canine: Junction of incisal and middle thirds
Distal of canine: Middle third
(I,J,J,M,J,M)
Which periodontal fibers are Resistant to forceful impaction of a tooth into the alveolus?
Oblique fibers
Name the Smallest embrasue in the Posterior Maxilla
Between 1st and 2nd Molars
Describe the difference between Primary and Permanent teeth regarding the following:
Enamel
Dentin
Pulp horns
Pulp chambers
-Primary Enamel is Thinner and has Consistent depth
-Primary Dentin is Thinner (limited between enamel and pulp chambers)
-Primary Pulp Horns are Higher (higher underneath crown heights)
-Primary pulp chambers are proportionately Large
Describe the Incisal ridge of the Primary Maxillary Lateral incisor.
Describe the Lingal fossa of this tooth.
Curved toward the Facial surface
Lingual fossa is Modestly (moderately) deep
Where is most of the tooth structure on the Primary Maxillary Lateral incisor? Why?
Most tooth structure is on the Facial surface
Due to Lingual taper (less tooth structure on the lingual)
Which Line angle is unique on the Primary Maxillary Lateral incisor? What is unique
about it?
DistoLingual line angle is slightly Concave
What is the outline form of the Primary Maxillary 2nd Molar? How many cusps does it
have?
complete solutions (2022 study guide)
Describe the difference between the Incisal Ridge and Incisal Edge
Incisal edge: sharp line that delineates facial from lingual forms
Incisal ridge: covers entire incisal surface. Has more surface area then incisal edge.
When does calcification begin? By what time have all primary teeth begun calcification
13-16 weeks in utero calcification commences
18-20 weeks in utero: all primary teeth have initiated calcification
What is the order of the first evidence of Calcification in the Primary dentition?
Central incisor → 1st Molar → Lateral incisor → Canine → 2nd Molar
Which Primary teeth are First to have a complete root? When?
Mx Central incisor
Md Central incisor
Md Lateral incisor
All at 1.5 years
Which Primary teeth are last to have a complete root? When?
Mx and Md canines
3.25 years of age
By what age does anterior tooth spacing stop?
6 years of age
Which Permanent tooth is the 1st to erupt into the oral cavity? What age?
Permanent 1st molars (Md precedes Mx slightly)
6 years of age
By age 6, which Permanent teeth have Crowns that are Completely calcified?
Central and Lateral incisors
1st Premolars
1st Molars
(Md and Mx for all of these)
What is the Chronology of Calcification of the Permanent Mandibular teeth?
1st Molar → Incisors → Canines → Premolars → 2nd Molar → 3rd Molar
What is the Chronology of Calcification of the Permanent Maxillary teeth?
1st Molar → Central incisor → Canine → Lateral incisor → Premolars → 2nd Molar →
3rd Molar
What is the Order of Eruption for the Permanent Mandibular teeth?
1st Molar → Central incisor → Lateral incisor → Canine → 1st Premolar → 2nd
Premolar → 2nd Molar → 3rd Molar
By 8 years of age, what is the state of the 2nd and 3rd Permanent Molars?
2nd molar has not yet erupted
3rd molar has not yet begun calcification
What are the 4 classifications of Cusp Form?
Haplodont: single cone
Triconodont: 3 cusps in straight line
, Tritubercular Molar: 3 cusps in primary triangle
Quadritubercular Molar: 4 cusps in rectangular or rhomboid form
From a Proximal aspect of the Mandibular teeth, which tooth has the greatest and which
tooth has the least Proximal Reference angle? give the specific angle measurement
Greatest angle: Lateral incisor at 23º
Least angle: 2nd Premolar at 6º
From a Facial aspect of the Mandibular teeth, which tooth has the greatest and which
tooth has the least Facial Reference angle? give specific measurement
Greatest angle: 2nd Molar at 14º
Least angle: Lateral incisor at 0º
What is the Facial reference angle of the Mandibular 2nd Premolar?
9º
List the Location of the Proximal Contact areas of the Maxillary Anterior teeth
Midline: Incisal third
Distal of central: Junction of incisal and middle thirds
Mesial of lateral: Junction of incisal and middle thirds
Distal of lateral: Middle third
Mesial of canine: Junction of incisal and middle thirds
Distal of canine: Middle third
(I,J,J,M,J,M)
Which periodontal fibers are Resistant to forceful impaction of a tooth into the alveolus?
Oblique fibers
Name the Smallest embrasue in the Posterior Maxilla
Between 1st and 2nd Molars
Describe the difference between Primary and Permanent teeth regarding the following:
Enamel
Dentin
Pulp horns
Pulp chambers
-Primary Enamel is Thinner and has Consistent depth
-Primary Dentin is Thinner (limited between enamel and pulp chambers)
-Primary Pulp Horns are Higher (higher underneath crown heights)
-Primary pulp chambers are proportionately Large
Describe the Incisal ridge of the Primary Maxillary Lateral incisor.
Describe the Lingal fossa of this tooth.
Curved toward the Facial surface
Lingual fossa is Modestly (moderately) deep
Where is most of the tooth structure on the Primary Maxillary Lateral incisor? Why?
Most tooth structure is on the Facial surface
Due to Lingual taper (less tooth structure on the lingual)
Which Line angle is unique on the Primary Maxillary Lateral incisor? What is unique
about it?
DistoLingual line angle is slightly Concave
What is the outline form of the Primary Maxillary 2nd Molar? How many cusps does it
have?
