Question

Resin bonded FPD (Maryland \& Virginia) are not indicated in patients with:

• A. Open bite
• B. Deep bite
• C. Cross bite
• D. Bilateral cross bite

Hint:

Resin bonded bridges require good enamel surface and adequate occlusal clearanceDeep bite cases increase debonding risk.

Answer 1

The Correct Option is B

Step 1: Understanding resin bonded FPD.
Resin bonded fixed partial dentures (Maryland or Virginia bridges) rely on adhesive bonding to enamel surfacesThey require minimal tooth preparation and depend heavily on proper occlusal clearance for success
Step 2: Importance of occlusal relationship.
For long-term retention, the prosthesis should not be subjected to heavy occlusal forcesExcessive vertical overlap may cause dislodgement of the retainer wings
Step 3: Evaluation of options.
(A) Open bite: May provide sufficient clearance and reduced occlusal stress
(B) Deep bite: In deep bite cases, excessive vertical overlap causes heavy occlusal contacts on the pontic or retainerThis increases the risk of debonding
(C) Cross bite: May not always contraindicate depending on occlusal clearance
(D) Bilateral cross bite: Not an absolute contraindication unless occlusal interference exists
Step 4: Conclusion.
Resin bonded FPDs are not indicated in deep bite cases due to excessive occlusal forces and risk of failure