Podcast
Questions and Answers
What is the main characteristic of the mandibular first molars?
What is the main characteristic of the mandibular first molars?
At what age does the eruption of maxillary first molars generally occur?
At what age does the eruption of maxillary first molars generally occur?
Which of the following describes the root structure of maxillary first molars?
Which of the following describes the root structure of maxillary first molars?
What is the shape of the mandibular first molars' crown?
What is the shape of the mandibular first molars' crown?
Signup and view all the answers
Which cusp is the largest on the maxillary first molars?
Which cusp is the largest on the maxillary first molars?
Signup and view all the answers
When does crown completion of mandibular lateral incisors occur?
When does crown completion of mandibular lateral incisors occur?
Signup and view all the answers
What is a distinguishing feature of maxillary central incisors?
What is a distinguishing feature of maxillary central incisors?
Signup and view all the answers
What is the smallest cusp on the maxillary first molars?
What is the smallest cusp on the maxillary first molars?
Signup and view all the answers
Which of the following best describes the initial calcification timeline for mandibular central incisors?
Which of the following best describes the initial calcification timeline for mandibular central incisors?
Signup and view all the answers
What type of grooves are characteristic of mandibular first molars?
What type of grooves are characteristic of mandibular first molars?
Signup and view all the answers
At what age does initial calcification of the maxillary lateral incisors typically occur?
At what age does initial calcification of the maxillary lateral incisors typically occur?
Signup and view all the answers
Which of the following features is characteristic of the mandibular canines?
Which of the following features is characteristic of the mandibular canines?
Signup and view all the answers
What is the typical eruption age for maxillary first premolars?
What is the typical eruption age for maxillary first premolars?
Signup and view all the answers
How many pulp horns are generally present in mandibular first premolars?
How many pulp horns are generally present in mandibular first premolars?
Signup and view all the answers
Which characteristic distinguishes the maxillary second premolars from other premolars?
Which characteristic distinguishes the maxillary second premolars from other premolars?
Signup and view all the answers
What is the typical root completion age for maxillary lateral incisors?
What is the typical root completion age for maxillary lateral incisors?
Signup and view all the answers
Which feature is typically observed in maxillary first premolars?
Which feature is typically observed in maxillary first premolars?
Signup and view all the answers
The eruption of mandibular canines typically occurs around which age?
The eruption of mandibular canines typically occurs around which age?
Signup and view all the answers
Initial calcification of mandibular first premolars occurs at which of the following ages?
Initial calcification of mandibular first premolars occurs at which of the following ages?
Signup and view all the answers
Maxillary lateral incisors can occasionally present which of the following conditions?
Maxillary lateral incisors can occasionally present which of the following conditions?
Signup and view all the answers
At what age does the eruption of the upper second molars typically occur?
At what age does the eruption of the upper second molars typically occur?
Signup and view all the answers
What is the typical age range for root completion of lower second molars?
What is the typical age range for root completion of lower second molars?
Signup and view all the answers
What is the initial calcification period for maxillary canines?
What is the initial calcification period for maxillary canines?
Signup and view all the answers
Which feature is characteristic of mandibular second premolars?
Which feature is characteristic of mandibular second premolars?
Signup and view all the answers
What is a common characteristic of lower third molars?
What is a common characteristic of lower third molars?
Signup and view all the answers
What is the crown completion age for lower second molars?
What is the crown completion age for lower second molars?
Signup and view all the answers
During which period does initial calcification of lower second molars occur?
During which period does initial calcification of lower second molars occur?
Signup and view all the answers
Which upper molar characteristic involves a smaller distal palatal cusp compared to maxillary first molars?
Which upper molar characteristic involves a smaller distal palatal cusp compared to maxillary first molars?
Signup and view all the answers
What type of root structure do lower second molars typically exhibit?
What type of root structure do lower second molars typically exhibit?
Signup and view all the answers
What is the main distinguishing feature of maxillary canines compared to other teeth?
What is the main distinguishing feature of maxillary canines compared to other teeth?
Signup and view all the answers
Study Notes
Permanent Dentition
-
Mandibular First Molars:
- 5 Cusps: ML, DL, MB, DB, D
- MB cusp larger than DB cusp
- ML cusp larger than DL cusp
- D cusp smallest
- Oval crown shape
- 2 buccal developmental grooves, mesial groove deeper and longer
- 2 roots: mesial and distal, mesial root wider with central groove
- 3 or 4 root canals, 5 pulp horns
-
Maxillary First Molars:
- 4 Cusps: MB, DB, MP, DP
- MP cusp largest, DP cusp smallest
- Equilateral rhomboid shape
- Oblique ridge divides occlusal surface, runs from DB to MP cusp
- P cusps lie further onto occlusal surface
- 3 roots: MB, DB, P
- 3 or 4 root canals, 4 pulp horns
- Cusp of Carabelli may be present on palatal surface of MP cusp
-
Mandibular Central Incisors:
- Flat labial surface, concaved lingual surface
- Distal-incisal angle slightly more rounded
- Cervical undulation
- Small marginal ridges and cingulum on lingual surface
- 1 root, 1 root canal, 2 pulp horns: mesial and distal
-
Maxillary Central Incisors:
- Convexed labial surface, concaved palatally
- Sharp MI angle, rounded DI angle
- Mesial and distal marginal ridges meet centrally to form convexed cingulum
- Hollow cingulum pit
- CEJ undulates mesially and distally
- 1 root, 1 root canal, 2 pulp horns: mesial and distal
-
Mandibular Lateral Incisors:
- More fan shaped than lower central incisor
- Mesial-incisal angle sharp, Disto-incisal angle rounded
- Concaved lingual surface
- More pronounced distal root groove
- Small cingulum
- 1 root, 1 root canal, mesial and distal pulp horns
-
Maxillary Lateral Incisors:
- Smaller, less bulky, and narrower
- Pronounced rounding of DI angle
- Mesial and distal marginal ridges palatally
- Cingulum with pit more pronounced
- CEJ undulates mesially and distally
- 1 root, 1 root canal, 2 pulp horns: mesial and distal
- Can be 'peg' shaped or missing, may have 2 roots or bi-lacerated roots
-
Mandibular Canines:
- Less bulky than upper canine
- Convexed labial surface, more bulbous distally
- Shorter mesial slope
- 1 cusp inclines distally
- Less pronounced mesial and distal marginal ridges
- Mesial and distal lingual fossae, larger distally
- 1 root, 1 root canal, no pulp horns
-
Maxillary Canines:
- Convexed labial surface, concaved palatal surface
- Distal slope longer and surface more bulbous
- Pronounced medial and distal marginal ridges, large cingulum, can be pointed
- Mesial and distal palatal fossae
- Distal root groove more prominent than mesial
- 1 long root with distal inclination, 1 root canal, no pulp horns
- Can be impacted
-
Maxillary First Premolars:
- 2 cusps: buccal and palatal, buccal cusp larger
- Longer mesial slope
- Tip of palatal cusp displaced mesially
- Mesial and distal marginal ridges
- One central groove with 2 fossae
- Developmental groove on mesial root between 2 cusps
- Canine fossae: concavity on mesial root surface houses distal bulge of canine
- 2 roots, 2 root canals, 2 pulp horns: buccal and palatal
- Root formation can vary, may have 1 or 2 roots, 2 roots can be partly fused
-
Maxillary Second Premolars:
- 2 cusps: buccal and palatal, buccal cusp larger, longer distal slope
- Tip of palatal cusp displaced mesially
- Mesial and distal marginal ridges
- One central groove with 2 fossae
- Apex has distal inclination
- More prominent distal developmental groove
- 1 root, 1 or 2 root canals, 2 pulp horns: buccal and palatal
- May have additional cusp on distal slope or bi-furcated root
-
Mandibular First Premolars:
- 2 cusps: 1 large buccal, 1 small lingual
- Buccal cusp angled mesially, leans lingually
- Shorter mesial slope, bulbous distal surface
- One central developmental groove
- 2 fossae: distal fossae larger
- Lingual cusp overhangs root
- 1 root, 1 root canal, single pulp horn
-
Mandibular Second Premolars:
- 3 cusps: 1 large buccal, 2 lingual, ML cusp larger than DL cusp
- Shorter mesial slope buccally
- Larger than lower 4s
- Distal inclination at apex
- 1 root, 1 root canal, 2-3 pulp horns
-
Lower Second Molars:
- 4 cusps: MB, DB, ML, DL
- MB cusp higher than DB cusp, ML cusp higher than DL cusp
- Wider mesially than distally
- Cross-shaped groove pattern occlusally
- Convexed buccal surface
- Wide and grooved mesial root
- 4 fossae occlusally
- Buccal and lingual groove, buccal groove deeper
- 2 roots, 3-4 root canals, 4 pulp horns
-
Upper Second Molars:
- 4 cusps: MB, DB, MP, DP
- Smaller DP cusp than maxillary 6s
- Oblique ridge and palatal fissure present
- Not equilateral
- 3 roots: P, MB, DB (less divergent)
- 3 or 4 root canals, 4 pulp horns
- May have fused roots or missing DP cusp
-
Lower Third Molars:
- 4, 5, or 6 cusps
- Very convexed buccal surface, bulbous crown
- Wider mesial root, marked root distal inclination
- Variable number of roots and root canals
- Variable in size, shape, presence, impaction, and root fusion
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Related Documents
Description
null
