Primary tooth morphology Flashcards
ILO 8.5b: have knowledge of the form and function of teeth and associated structures in health and disease
what is the sequence of restoration for primary teeth?
6
- prevention
- fissure sealant
- preventative restorations
- simple fillings e.g. shallow cervical cavities
- fillings requiring LA but not into pulp
- pulpotomies (upper arch first)
when would you not use LA in cavities in children?
when cavities are minimal and require hadn excavation or limited removal with a slow speed handpiece
what are the max doses of lignocaine 2% and prilocaine 3% in children?
- lignocaine 4.4mg/kg (1/10 cartridge/kg) - 2.2ml cartridge has 44kg
- prilocaine 6mg/kg (less than 1/10 cartridge/kg) - 2.2ml cartridge has 66mg
what tooth is shown here?
primary central incisor (51)
what are the features of a primary central incisor?
- root may bend distally
- mesial edge of crown tends to be straighter
what tooth is shown here?
primary canine (53)
what are the features of a primary canine?
- mesial edge tends to be straighter
- distal flaring after the ACJ
what tooth is shown here?
primary upper second molar (65)
what are the features of a primary upper second molar?
- prominent transverse ridge
- two buccal roots
- one palatal root
what tooth is shown here?
primary lower second molar (85)
what are the features of the primary lower second molar?
- 3 buccal cusps
- distal root wider than mesial
what tooth is shown here?
primary upper first molar (54)
what are features of a primary upper first molar?
- prominent mesiobuccal tubercle
- two buccal roots
- one palatal root
what tooth is shown here?
primary lower first molar (84)
what are features of primary lower first molars?
- prominent mesiobuccal tubercle
- mesial root wider than distal
how deep should occlusal cavities be? what burs do you use?
no deeper than 1.5mm
high speed fissure or round bur
what should the cavity preparations in upper second molars look like (55)?
transverse ridge should be preserved
what should the cavity preparation in uppper first molars look like (54)?
what should the cavity preparation in lower second molars look like (85)?
what should the cavity preparation in lower first molars look like (84)?
