dental materials

How will Composite material appear on radiographs?

radial opacity  

Amalgam restoration will appear-

radiopaque 

How to see dental materials?   

  They look different than our natural enamel would appear  

How do the amalgam edges look?  

 Very sharp & Cleary defined  

Composite restorations look?

not as clearly defined as our amalgam restoration 

Clinically, amalgam restoration will appear 

  as silver 

Clinically a composite restoration will appear- 

 tooth colored 

What makes a radiograph non-diagnostic for caries?

Inter proximal overlap 

What is the mach effect?

A trick our mind plays on us 

When does the mach effect occur?

Under metal or metallic restoration 

When are amalgam & composite restorations used?   

  To fill a tooth that has a carious lesion 

The amalgam/composite restoration process?  

 The dentist will remove all the decay from the pulp and then replace the tooth structure thar was destructed by the caries process, replace that tooth structure with either composite or amalgam restoration 

When are amalgam & composite restorations useful?  

Where we have carries that are moderate or advanced 

When to get a crown? 

If there’s a cusp broken off or there’s not a lot of integrity, or a lot of tooth structure  

Overhang-

when the restoration extends beyond the tooth the tooth structure itself 

The consequences of overhang?

   that area of where plaque, biofilm, food & bacteria can become trapped  

Biofilm, food, bacteria, & plaque can contribute to?

Recurrent decay & issues with the bone  

Cervical burnout location?

Around the cej  

how Composite restoration can appear 

appear in many ways  

When is root therapy/ root canal needed?  

 If tooth becomes infected or an exposed nerve 

Whose composite material will not appear opaque?

The older generations, it will appear radiolucent, so if you ever have a question, check clinically 

What determines the opacity of the composite?

The amount & type of composite used  

What is a root canal therapy?  

Removes the nerves from the root from the canal and then the canal is prepared to have something put in the replace the nerve  

What is often used to replace nerves? 

Gutta percha more often & silver points (older practice) 

What is gutta percha?

A rubbery material 

How does gutta percha show up radiographically?

Opaque but not bright as metal & blends in into the canal 

Silver points radiographically?  

Appear radiopaque since it is a metal & stiff looking, doesn't right in the structure 

What does it mean if we have a dental implant? The tooth is considered missing 

The tooth is considered missing 

Dental implant 

 the whole ROOT NOT CROWN is replaced with a structure that looks like a screw 

What's the difference between an implant and a root canal therapy tooth?  

With a root canal therapy tooth, you will have the natural root of the tooth, so the tooth is still considered present, whereas with implant the whole tooth including the root is removed & something artificial is put in its place 

What happens if a tooth becomes reinfected after it has root canal therapy?

Perform Apicoectomy

Apicoectomy  

material is usually amalgam some metal at the apex of the tooth  

Crown

is a restorative measure made of different materials (metal, porcelain fused to metal or gold),  

Porcelain fused crown-

metal inside the crown & around the outside i porcelain 

Why is porcelain outside? 

To make it look more like a natural tooth  

When to get a crown treatment?

For a larger, more serve carious lesions. A tooth is fracture and there's minimal tooth structure available to build a filling with  

What will a dentist do in a crown treatment? 

Will prepare the tooth by making it into like thimble or stump

Make sure the crown is cemented permanently on the stump that they have prepared   

Crown feature

crown is hollow in the middle 

Crown treatment radiographically-  

a COMPLETE covering of the natural tooth which includes the enamel, dentin, the pulp chamber 

Porcelain fused to metal (pfm)radiographically-  

surrounding the metal there’s another outline of the tooth structure which is porcelain 

Which crown is more frequently used, pediatric & temporary?

Stainless steel crown 

Why are stainless steel crowns temporary?

they are not fabricated for the individual person’s tooth, they are premade in specific sizes 

Stainless steel crowns radiographically?

Ghost like, see through the crown & see the natural tooth as well 

Dental bridged-

several crowns that are connected to replace a missing or multiple missing teeth & multiple teeth can be involved 

Abutments-

the teeth that have crowns on them & there’s a natural tooth there 

Pontic- 

  the tooth is being replaced  

Can bridges be created with implants? 

  Yes 

Can pontic only be centered?  

 No, it can be on the side 

Space maintainer radiographically-

  radiopaque since it is metal