When does the maxilla grow, and how does it happen?
- Intramembranous Ossification
- Sutural apposition & surface remodeling
- Moves out from under cranium- downward and forward
How does the mandible grow?
- Chin?
- Condyle?
- Ramus?
Endochondral & Intramembranous
- Chin - downward & forward
- Condyle - upward & backward
- Ramus - grows away from chin
Developmental Milestones:
- Tooth buds appear?
- Major development of face?
- Fusion of palatal shelves?
- Deciduous teeth begin to calcify?
- Reflexes develop?
- Permanent teeth begin to calcify?
- 6th week
- 3-6th week
- 7-8th week
- 14th week (or 16th week)
- 14-32nd week
- Birth
What are the time lines for the formation and eruption of primary teeth?
Review chart
What are the different anomalies in the mouth of the newborn?
- Inclusion Cysts
- Epstein’s pearls
- Bohn’s nodules
- Dental-lamina cysts
- Natal & Neonatal Teeth
- Predeciduous teeth
- Primary teeth
- Eruption hematoma
- What inclusion cyst is found on the midpalatal raphe?
- Buccal & lingual aspects of dental ridges?
- Crests of alveolar ridge?
- Epstein’s pearls
- Bohn’s nodules
- Dental-lamina cysts
What’s the difference between natal teeth and neonatal teeth?
- Natal teeth - present at birth
- Neonatal teeth - erupt within 30 days of birth
What are predeciduous teeth?
- Supernumerary teeth, defective, mobile
- Incidence 1 in 4000
- Risk for aspiration, removal is generally recommended
Describe the characteristics of primary teeth that erupt prematurely?
- Normal primary teeth
- Incidence 1 in 2000
- Should not be extracted (if possible)
- Radiograph helpful
What is the eruption sequence of primary teeth?
ABDCE
What is the eruption sequence for maxillary and mandibular permanent teeth?
- Maxillary - 6-1-2-4-5-3-7-8
- Mandibular - 6-1-2-3-4-5-7-8
What’s the rule of 6 regarding flouride supplements?
- Less than 6 months - No Flouride
- More than 0.6ppm - No Flouride
- More than 16 years - No Flouride
- Dosage changes at 6 months, half of 6 (3 years) and at 6 years
What is the Tanaka Johnson formula?
- mandibular incisor length/2 + 11 (max or 10.5 mandibular)
What’s the prevalence of diastemas in 6,9 and 14 year olds?
- 6 (ugly duckling) - 44-97%
- 9 - 33-46%
- 14 - 7-20%
What are the etiologies for diastemas?
- Normal
- Space, small teeth, supernumary
- Habit, malocclusion
- Frenum - may be effect, rather than cause
What’s the treatment for diastemas?
After eruption of the permanent canines, based on diagnosis of cause
What’s the standard protocol for X-rays?
- No “standard” prescription
- Order radiographs only if diagnostic yield is expected to effect care
What do you consider when giving X-rays?
- Age of patient/cooperation
- Oral hygiene
- Position of teeth
- Patient history
- Clinical exam
- Caries risk assessment
What is the SLOB rule?
Same Lingual, Opposite Buccal
When do you place a protective liner?
When all the decay is gone and there is no exposure
When do you place an indirect pulp cap?
Leave some of the decay and seal it, with the intention to come back and fix it after tertiary dentin has formed
When do you do a pulpectomy?
On a non-vital tooth
When would you perfrom an apexification?
Non vital, permanent immature tooth
Do you perform apexifications on primary teeth?
NO
