Oral Health and Pregnancy - Dental Treatment and Material Considerations

what is the pregnant pt at risk of and why

caries and erosion risk

due to sugary diet caused by cravings = caries susceptibility

acid reflux/ monring sickness = erosion

perio risk

tooth mobility due to pdl disturbances

what is teratogenic damage and when does it happen

harmful effects of drugs on the foetus most prone in 1sr trimester

what di we nit do in third trimester

treat pt supine due to prevention of hypotensive syndrome

correct positioning avoids maternal vena cava and arota compression

what is the placental barrier

acts as an interface between mother and foetus

gas exchnage and transfer of nutrients and waste products

secretion of hormones for foetal growth and development

transfers immunity from mum to foetus

what is greatest risk to foetus

organogenesis in 1st trimester

what are the placental barrier mechanisms of transfer

simple diffusion

molecular weight

lipid solubility

degree of ionisation

protien binding

when do we not use amalgam

children under 15

pregnant or breastfeeding women

except when strictly necessary based on medical needs of pt

what are the concerns of resin composites

elution of bisphenol a (bpa);

is an endocrine distruptor

mimics oestrogen

new resin comps associated with short term bpa in saliva and urine

bpa can cross placental barrier

no restrictions tho

what do we know about amalgam

surpisingly little

chemical form of mercur determines the celluler uptake;

mercury vapour - passive diffusion

methyl mercury - active transport by amino acid carriers