Examination of residual ridge for edentulous PT before construction of denture determine stability, support and retention related to the ridge:
a. True.***
b. False.
TYPES OF PROSTHETICS:
REMOVABLE COMPLETE PROSTHETICS:
The removable full denture, commonly known as a denture, is a replacement for natural teeth. It is said to be complete because the prosthesis replaces all the teeth, either the upper jaw for a denture at the top, or the lower jaw for a denture at the bottom.
Removable Complete Denture Removable term means that the prosthesis can be removed from the mouth for daily maintenance or just to sleep. Prostheses are made of acrylic resin teeth or, as in the past, of porcelain. Teeth obviously imitate natural teeth, but there is also pink acrylic to mimic the gums.
Dental technicians manufacture removable full dentures from measurements, fingerprints and prescriptions from a dentist, specialist (prosthodontist) or denturologist.
REMOVABLE PARTIAL PROSTHETICS:
Removable partial dentureThe partial denture, in comparison with the complete prosthesis (denture), is an apparatus for replacing one or more teeth in order to improve phonetics, chewing, as well as aesthetics.
Removable partial dentureDental technicians produce removable partial dentures from measurements, impressions and prescriptions from a dentist, a specialist (prosthodontist) or a denturologist.
The partial is partly made of plastic (the teeth and the gum) and a metal structure that allows, with hooks, to keep the partial well in place in the mouth of the patient.
CROWNED:
crown preparationWhen a tooth is broken, it does not have enough healthy natural tooth structure to support a composite resin or amalgam (because of caries for example) or it is devitalized following treatment channel, one generally proceeds to the manufacture of a crown.
The crown is a restoration that will completely cover the tooth that supports it. In the case of a root canal, when the visible natural structure of the tooth is destroyed, the manufacture of a pivot (anchored in the root) will be necessary in order to support the crown. The crown is a fixed restoration, that is to say it is glued in the mouth. Since only one or a few teeth are replaced with a crown and the crown is permanently cemented in the mouth, it is called a fixed partial denture. In contrast, a denture is a removable full denture.
Three methods are mainly used for the manufacture of a crown: the ceramo-metallic method, the all-ceramic method and the restoration of composite resin. Each of these methods has its requirements and responds to particular needs in terms of functionality, aesthetics and resistance. We can also add that it is still made completely yellow gold crowns for the posterior teeth. This type of crown has the advantage of being very strong, and not to unduly use the natural teeth of the opposite maxillary. This is an interesting solution when aesthetics is not at stake.
In order to make a crown, the dentist must first "prepare" the tooth that will receive it. To do so, it is necessary to reduce by grinding the size of this tooth in order to create a su'fisan 'space to allow obtaining a crown with a natural appearance.
Once the tooth is reduced, the dentist takes an impression of this preparation which will then be transformed into a working model by the dental technician.
From the different working models, the dental technician can then proceed to manufacture the crown.
To obtain a crown harmoniously arranged with the natural dentition, the dental technician works in collaboration with the dentist to make an appropriate selection of the color of the tooth. They will use different tools: color guides, photography (film or digital), color digitizer. All data collected will be recorded in the patient's file.
CERAMO-METALLIC:
The metal-ceramic crown The metal-ceramic crown, as its name says, is composed of two basic materials: a metal alloy and a dental ceramic. The alloy serves as a base (metal skeleton) to support the ceramic covering it. The term "porcelain" is sometimes also used to refer to dental ceramics. The metal-ceramic method is by far the most used because it has a very long life. It also makes it possible to work in certain more difficult conditions where the other manufacturing techniques are to be discouraged.
In order to produce the ceramic-metallic crown, a metallic structure is first produced, which is then covered with a succession of layers of ceramics specially designed to reproduce the hues and the translucency of a natural tooth.
CERAMIC CERAMIC:
The all-ceramic crown The all-ceramic crown is a crown entirely made of ceramic, which gives it light transmitting characteristics close to the natural dentition. As for the metal-ceramic crown, the ceramic-ceramic crown can also be elaborated on a substructure support, but it will also be ceramic.
The ceramic-ceramic crown is often more aesthetic, but will be contraindicated if certain parameters (occlusion, tooth type, etc.) are not respected.
COMPOSITE RESIN:
The composite resin is used in the form of paste which must be cured with a light source (photopolymerization). It is essentially the same material used by dentists for making "white fillings". Like the famous "white fillings", the composite crown has a shorter life than the ceramic crown.
The composite allows us to reach a similar aesthetic level to the natural dentition while having a level of abrasion close to that of the enamel.
TRADITIONAL BRIDGE:
Traditional Bridge Framing When one or more teeth are missing, there are many ways to remedy this situation. The traditional bridge is one. We can compare the bridge in the dental field to that which connects the two banks of a river: two pillars connected by a bridge. In a similar way, the traditional bridge serves to join two pillar teeth with a hanging tooth. Many teeth can be connected, as long as the number and quality of the abutments are sufficient.
traditional bridge structureThe bridge requires the manufacture of a structure (frame) that will support the aesthetic material covering it.
Like the crown, the traditional bridge is designed in one of three ways: the metal-ceramic bridge, the all-ceramic bridge or the composite resin bridge. Note again that, for reasons of strength, the bridge with metal substructure is often the restoration of choice, especially for the posterior teeth.
a. True.***
b. False.
TYPES OF PROSTHETICS:
REMOVABLE COMPLETE PROSTHETICS:
The removable full denture, commonly known as a denture, is a replacement for natural teeth. It is said to be complete because the prosthesis replaces all the teeth, either the upper jaw for a denture at the top, or the lower jaw for a denture at the bottom.
Removable Complete Denture Removable term means that the prosthesis can be removed from the mouth for daily maintenance or just to sleep. Prostheses are made of acrylic resin teeth or, as in the past, of porcelain. Teeth obviously imitate natural teeth, but there is also pink acrylic to mimic the gums.
Dental technicians manufacture removable full dentures from measurements, fingerprints and prescriptions from a dentist, specialist (prosthodontist) or denturologist.
REMOVABLE PARTIAL PROSTHETICS:
Removable partial dentureThe partial denture, in comparison with the complete prosthesis (denture), is an apparatus for replacing one or more teeth in order to improve phonetics, chewing, as well as aesthetics.
Removable partial dentureDental technicians produce removable partial dentures from measurements, impressions and prescriptions from a dentist, a specialist (prosthodontist) or a denturologist.
The partial is partly made of plastic (the teeth and the gum) and a metal structure that allows, with hooks, to keep the partial well in place in the mouth of the patient.
CROWNED:
crown preparationWhen a tooth is broken, it does not have enough healthy natural tooth structure to support a composite resin or amalgam (because of caries for example) or it is devitalized following treatment channel, one generally proceeds to the manufacture of a crown.
The crown is a restoration that will completely cover the tooth that supports it. In the case of a root canal, when the visible natural structure of the tooth is destroyed, the manufacture of a pivot (anchored in the root) will be necessary in order to support the crown. The crown is a fixed restoration, that is to say it is glued in the mouth. Since only one or a few teeth are replaced with a crown and the crown is permanently cemented in the mouth, it is called a fixed partial denture. In contrast, a denture is a removable full denture.
Three methods are mainly used for the manufacture of a crown: the ceramo-metallic method, the all-ceramic method and the restoration of composite resin. Each of these methods has its requirements and responds to particular needs in terms of functionality, aesthetics and resistance. We can also add that it is still made completely yellow gold crowns for the posterior teeth. This type of crown has the advantage of being very strong, and not to unduly use the natural teeth of the opposite maxillary. This is an interesting solution when aesthetics is not at stake.
In order to make a crown, the dentist must first "prepare" the tooth that will receive it. To do so, it is necessary to reduce by grinding the size of this tooth in order to create a su'fisan 'space to allow obtaining a crown with a natural appearance.
Once the tooth is reduced, the dentist takes an impression of this preparation which will then be transformed into a working model by the dental technician.
From the different working models, the dental technician can then proceed to manufacture the crown.
To obtain a crown harmoniously arranged with the natural dentition, the dental technician works in collaboration with the dentist to make an appropriate selection of the color of the tooth. They will use different tools: color guides, photography (film or digital), color digitizer. All data collected will be recorded in the patient's file.
CERAMO-METALLIC:
The metal-ceramic crown The metal-ceramic crown, as its name says, is composed of two basic materials: a metal alloy and a dental ceramic. The alloy serves as a base (metal skeleton) to support the ceramic covering it. The term "porcelain" is sometimes also used to refer to dental ceramics. The metal-ceramic method is by far the most used because it has a very long life. It also makes it possible to work in certain more difficult conditions where the other manufacturing techniques are to be discouraged.
In order to produce the ceramic-metallic crown, a metallic structure is first produced, which is then covered with a succession of layers of ceramics specially designed to reproduce the hues and the translucency of a natural tooth.
CERAMIC CERAMIC:
The all-ceramic crown The all-ceramic crown is a crown entirely made of ceramic, which gives it light transmitting characteristics close to the natural dentition. As for the metal-ceramic crown, the ceramic-ceramic crown can also be elaborated on a substructure support, but it will also be ceramic.
The ceramic-ceramic crown is often more aesthetic, but will be contraindicated if certain parameters (occlusion, tooth type, etc.) are not respected.
COMPOSITE RESIN:
The composite resin is used in the form of paste which must be cured with a light source (photopolymerization). It is essentially the same material used by dentists for making "white fillings". Like the famous "white fillings", the composite crown has a shorter life than the ceramic crown.
The composite allows us to reach a similar aesthetic level to the natural dentition while having a level of abrasion close to that of the enamel.
TRADITIONAL BRIDGE:
Traditional Bridge Framing When one or more teeth are missing, there are many ways to remedy this situation. The traditional bridge is one. We can compare the bridge in the dental field to that which connects the two banks of a river: two pillars connected by a bridge. In a similar way, the traditional bridge serves to join two pillar teeth with a hanging tooth. Many teeth can be connected, as long as the number and quality of the abutments are sufficient.
traditional bridge structureThe bridge requires the manufacture of a structure (frame) that will support the aesthetic material covering it.
Like the crown, the traditional bridge is designed in one of three ways: the metal-ceramic bridge, the all-ceramic bridge or the composite resin bridge. Note again that, for reasons of strength, the bridge with metal substructure is often the restoration of choice, especially for the posterior teeth.
PAPILLON BRIDGE:
Butterfly bridge Alternative solutions to the replacement of a tooth, butterfly bridges are considered as a feasible option when conditions permit. Butterfly bridges have the advantage of being more conservative for bearing teeth. Note also that the duration of this type of restoration is a little inferior to traditional crowns and bridges.
The Maryland Bridge (or butterfly bridge) takes its name from the university where it was born. The metaphor of the butterfly perfectly explains the principle of this restoration: a body with two wings. The butterfly bridge is used when a tooth is missing and you want to avoid attacking adjacent natural teeth by making a traditional bridge.
RADICULAR PIVOT, COUPLED BODY:
Detail - Root Pivot, Cast Body When a tooth has had to undergo root canal treatment, a change in its color is observed over time (the tooth becomes darker, more gray). That's when the option to make a crown becomes interesting.
Before the crown can be made, a pivot must be made to sit in the cavity created by the root canal treatment. This same pivot can also take the place of support for the crown that will follow.
FACET:
The facetThe facet is an aesthetic restoration mainly used on the front teeth (anterior teeth). It can correct many unsightly situations without unduly attacking the tooth that supports it. The facet is glued in place and only covers the surface of the tooth that is exposed during the smile. It can repair:
- Inequalities in the length and position of the teeth
- aesthetic problems caused by too many composite fillings or that have changed color over time (caffeine, cigarette)
- Prematurely worn teeth that show an unsightly stain
- A slightly broken tooth
INCRUSTRATION:
Porcelain inlayThe encrustation of porcelain or composite resin is an aesthetic alternative to replace an amalgam (filling). By replacing the metal of the amalgam with a material that can reproduce the colors and effects of the tooth, the incrustation integrates perfectly with the natural dentition.
(Text and photos by Émilie Brulé t.d.)
PROSTHETICS ON IMPLANTS
Implant placement is the latest alternative to entering the dental prosthesis market. This technique allows the replacement of one or more missing teeth by placing titanium implants directly into the maxillary bone. Thanks to the placement of implants, a patient will be able to recover all the comfort of a stable removable prosthesis. In the case of a fixed prosthesis (crown or bridge), the aesthetic and functional effect is comparable to the natural dentition. In addition, the use (and modification) of neighboring natural teeth is no longer necessary (as is the case when making a bridge).
A treatment in implantology requires a lot of rigor, as much in the planning as in the realization. The collaboration of several specialists in the dental field (surgeon, dentist, dental technician) is necessary for the realization of the various stages. We begin with an analysis of the case to achieve. The surgeon then places the implant in the bone. It is allowed to heal for a few months to allow the titanium implant to integrate with the bone mass. Thereafter, the dental technician (technician) can proceed to the manufacture of the prosthesis from fingerprints taken by the dentist.
CROWN AND BRIDGE ON IMPLANTS:
Crown detail - crown, screw, pound and implantThis is the replacement method for one or more missing teeth closest to the natural dentition. The implants here replace the root of the missing teeth. The crown or bridge is fixed on this implant (s) in one of the following ways:
Using a screw, directly on the implant glued in place on a pillar which is itself screwed on the implant
REMOVABLE PROSTHESIS ON IMPLANTS:
Removable prostheses on implants are ideal for patients whose complete denture (denture) is unstable in the mouth (lack of support of the gum to ensure retention). The prosthesis can be performed on implants according to different methods. The chosen method will depend on the number of implants placed in the mouth and functional restrictions (height available to make the prosthesis, position of the implants, etc.).
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