Pontic Design For Metal Ceramic Bridge Should Quizzn

Control thermal conductivity 4 only all of the above 1 2 3 1 and 3 2 and 4.

Pontic design for metal ceramic bridge should quizzn.

Provide for a rigid restoration. The components of a bridge are retainers pontics and connectors. D provide adequate embrasure spaces. Allow for complete coverage of the metal by the porcelain.

Metal ceramic pontics requirements adequate bulk of metal uniform thickness of porcelain continuous strip of metal on lingual surface 56. B be constructed to have an occlusal surface wider than the width of the tooth it replaces. Learn about the types of dental bridges including traditional cantilever maryland and implant supported. It must be easily cleaned.

According to some experiments it seems as if a somewhat higher difference up to 0 75 10 6 c can be used without the risk of cracks or fractures in the ceramic. Pontic design for a metal ceramic bridge should 1. Pontic or the artificial crown derives its name from a latin word pons which means bridge. Selection criteria for pontic and pontic designs.

Minimum thickness of connector for the posterior bridge should be 2 5 mm occluso gingivally and 2 5 mm bucco lingually. A metal ceramic posterior fixed partial denture pontic should a be constructed to have an occlusal surface one quarter the width of the tooth it replaces. Pontic design for a porcelain fused to metal bridge should 1. Pontic serves to restore the mastication speech to maintain tooth relationships both interarch and intra arch and also to satisfy patients esthetic and psychological needs by eliminating the space in dentition.

However wherever possible the maximum thickness of metal should be used commensurate with the maintenance of gingival health. Metal ceramic systems that have a difference in the coefficients of thermal expansion metal minus ceramic of 0 5 10 6 c or less are acceptable. All metal hygienic pontic fabrication 55. Fixed movable bridges have a major retainer at one end of the pontic.

All metal hygienic pontic fabrication 54. Retainers major or minor fixed fixed cantilever and spring cantilever bridges have only major retainer s. C cover as much mucosa as possible. Place the porcelain metal joint away from the soft tissues.

For resin bonded bridges the pontic should have light contact in intercuspal position icp. 2 and 4 4 only 1 and 3. Evidence to support or refute the effectiveness of ceramic materials for fixed prosthodontic treatment over metal ceramic. This design of bridge has been superseded.

Each part of the bridge should be designed individually but within the context of the overall design. The pontic is firmly attached to a retainer at one end of. Allow for complete coverage of the metal by the porcelain. All metal hygienic pontic fabrication 52.

Place the porcelain metal joint away from the soft tissues. 1 2 3 all of the above. A metal ceramic pontic must fulfill certain requirements.