complete dentures opposed by natural teeth

Question 1

why do natural teeth opposing dentures create issues?

Answer 1

natural teeth create more force than fake teeth

excessive forces are applied to the opposing edentulous ridge

Question 2

what can result from the excessive forces from natural teeth opposing dentures? 3

Answer 2

trauma

alveolar resorption and fibrous tissue replacement

lack of denture stability

Question 3

what is combination syndrome?

Answer 3

just lower anterior teeth, results in resorption of upper anterior ridge and overgrowth of maxillary tuberosities

Question 4

other issues with complete dentures opposed by natural teeth

Uneven occlusal plane -> unable to achieve balanced occlusion

Inadequate or excess FWS -> over-eruption or worn teeth

Difficulty recording jaw relationships

Aesthetics may be affected by tooth position

Drifting of teeth can alter overbite/overjet

Tooth wear of denture teeth - more than if opposed by another denture

Question 5

how is a upper fibrous ridge overcome? 2

Answer 5

mucostatic (at rest) impression using a special tray perforate and spaced anteriorly

If more sever a 2 stage impression is taken

Question 6

how is trauma to maxillary denture bearing area overcome? 2

Answer 6

maximum coverage of denture bearing area

ensure prosthesis covers primary load bearing sites - residual ridge and hard palate

Question 7

how is combination syndrome overcome?

Answer 7

consider lower denture also

Question 8

how is an optimum border seal created in upper denture?

Answer 8

post-dam

Question 9

how is lower incisor overbite managed in an upper denture? 2

Answer 9

denture tooth position

reduce incisal edge of natural teeth

Question 10

how is an irregular occlusion managed?

Answer 10

reduce cusp tips of natural teeth

crown some natural teeth

extract over-erupted teeth

overlay appliance if tooth wear

Question 11

are issues more severe in upper denture and lower natural teeth or lower denture and upper natural teeth?

Answer 11

lower denture and upper natural teeth as severe forces are concentrated over a smaller denture bearing area

Question 12

how are issues like trauma with lower denture and upper natural teeth managed? 3

Answer 12

soft lining - requires maintenance and replacement

retain roots, RCT and overdentures

implants - gold standard