Dentures have been one of the most reliable and oldest forms of tooth replacement techniques in the field of dentistry. These dental devices are usually made from acrylic denture base with porcelain teeth embedded in it. Dentures are also useful for enhancing the smile of a patient.
While this procedure may be the oldest, there have been many innovations and advancements in the fabrication of removable dentures. One significant change was incorporating different materials for forming a more rigid and durable denture base.
Cast metal partial denture is one such innovation that uses a metal base to provide a better fit. Moreover, it can withstand substantial occlusal forces that minimize the risk of breakage. Cast metal partial dentures are typically used to replace multiple missing teeth in the mouth.
Today’s article will highlight the benefits of partial cast denture. Furthermore, we will discuss the technique for preparing partial cast dentures.
What is a removable cast metal partial denture?
Cast metal partial denture is a removable device that is made from a cast metal framework. This framework acts as a base for the acrylic material and porcelain artificial teeth. Unlike the traditional acrylic denture, cast partial dentures are durable, retentive, and have high strength. (1)
However, the fabrication of cast partial denture is slightly time-consuming and complicated as compared to the traditional removable dentures.
What is the purpose of cast partial denture?
Cast metal partial denture is used in several dental situations such as –
- Replacement of multiple missing teeth in the mouth
- Replacement of distal extension (where there is no tooth present behind the edentulous space)
- Patients who do not prefer fixed prosthesis (2)
- When there is trauma to the jaw bone
- People with stable periodontal condition
What are the benefits and disadvantages of cast partial denture?
Cast partial denture has several beneficial values which include –
- Ability to distribute substantial occlusal forces
- Balanced bite
- Support to the cheeks and lips
- Elimination of tipping
- Maintains the lost tooth space and prevent adjacent tooth migration
- Does not require relining or rebasing
- Minimal tissue changes
- Requires very minimal direct retention
While there are several benefits of cast partial dentures, there are also some disadvantages associated with it –
- Difficult to repair
- Complex fabrication process
- Some patients may find it too rigid and annoying.
- Cannot prevent lateral stresses
- Requires constant maintenance
- Not a good option for replacing front teeth that require aesthetics
- A time-consuming process as it requires several dental appointments.
What are the contraindications of cast metal partial denture?
Some of the dental conditions that may not be ideal for cast partial denture include –
- Poor oral hygiene
- Rempant dental caries
- Advanced periodontal disease
- Weak teeth in the jaw
- Replacement of anterior teeth that require better aesthetics
- A patient wants a fixed dental prosthesis.
How is cast metal partial denture made?
As mentioned earlier, making a cast partial denture is slightly complicated and involves many steps to get the desired fit and look. The technique for fabricating cast partial denture is done in the following way –
- Usually, in the first appointment, the impression of the dental arches is recorded to make a study model.
- The dentist then may perform some modification procedures to alter the shape of some teeth. This increases the stability and retention of the cast partial denture. (3)
- After preparation, final impressions of the arches are taken to form master models on which the denture is fabricated.
- The metal framework is prepared in the dental lab and sent for a trial in the patient’s mouth to check the fit and retention. Possible adjustments are made if required. Moreover, the dentist records the bite of the patient with the metal framework.
Bite registration helps in the arrangement of artificial teeth. During this time, the shade of the teeth is also recorded to provide a natural-looking smile.
- All the details are then transferred to the dental technician to make a trial denture. The trial denture is used to make any final adjustments before delivering the denture to the patient for regular use.
- During the trial period, the dentist mainly re-checks the retention. Fit, stability, aesthetics, and the bite of the patient. Moreover, he may also check the phonetics to ensure there are no obstructions while speaking.
- The final changes are made, and the denture is polished and delivered to the patient. A follow-up appointment is made after one week of using dentures to refine the imperfections that the patient may encounter through regular use of the cast partial denture. (4)
- Future visits are schedules accordingly to adjust the dentures until they fit perfectly in the mouth.
Usually, all of these procedures are performed in five to six dental visits. Therefore, the process of cast metal denture is time-consuming.
What is the cost of cast partial denture?
The cost of cast metal partial denture depends on the number of teeth being replaced and the tooth’s location in the mouth. On average, the cost of cast partial denture may range between $300 – $3500 per tooth. Most dental insurance covers the cost of removable partial dentures.
Take away message
Cast metal partial dentures are a unique variety of traditional removable denture prosthesis. These devices are typically made from a metal framework which provides rigidity and strength to the acrylic base and artificial teeth. Moreover, it gives better retention and stability in the mouth.
However, cast partial denture requires several dental appointments for fabrication. Therefore it is a time-consuming and complicated process as compared to the traditional denture. Moreover, it is expensive as compared to other types of dentures.
It is best to consult your dentist before deciding on the type of removable prosthesis you might want to replace multiple missing teeth.