What is PMMA Denture Base?

PMMA denture base is a resin material used to make denture base, where PMMA stands for polymethyl methacrylate. The denture base is the base part of the denture, which is used to support and hold the root of the denture. The following is a detailed explanation of PMMA denture base:

First, material characteristics

Main ingredients: PMMA denture base is mainly made of polymethyl methacrylate (PMMA) and other resin materials. PMMA is a transparent thermoplastic with good processing and physical and mechanical properties.

Physical and chemical properties: PMMA denture base has good transparency, wear resistance and chemical resistance. It can be customized to the patient's oral condition to ensure good fit and comfort.

Biocompatibility: PMMA denture base has good biocompatibility and does not cause irritation or allergic reaction to oral tissue. It can also better resist adhesion, reduce the growth of bacteria, and thus contribute to oral health.

Second, the scope of application

Full denture: PMMA denture base is suitable for making the base of full denture to provide stable support and fixation for artificial teeth.

Partial dentures: For patients with partial missing teeth, PMMA denture bases can also be used to create a base for partial dentures, helping to restore the patient's chewing and articulation functions.

Single denture: In some cases, PMMA denture bases can also be used to create a base for a single denture.

Third, the production process

Oral impression: An oral impression is first performed to obtain the precise shape and dimensions of the patient's mouth.

Resin coating: Apply PMMA resin to the impression, ensuring uniform coverage and filling of all details.

Thermal curing treatment: The resin material is hardened by thermal curing treatment to form a stable denture base.

Dressing and adjustment: Finally, dressing and adjustment are carried out according to the patient's oral condition to ensure the comfort and stability of the denture.

Fourth, advantages and limitations

Advantages:

Good processing performance: easy to shape and process into various shapes and sizes.

High stability: high hardness and stability after curing.

Good aesthetics: It has good transparency and can meet the needs of patients for aesthetics.

Limitations:

Limited strength: Although PMMA denture base has high hardness and stability, its strength is still limited and may not be suitable for all complex oral restoration situations.

Insufficient wear resistance: PMMA denture base may be worn and damaged during long-term use.

Fifth, maintenance and maintenance

Regular cleaning: Patients should be cleaned regularly with a special denture cleaner to maintain the hygiene of the PMMA denture base and extend its service life.

Avoid overheating and strong acid and alkali: Avoid using overheated water or strong acid and alkali solution to clean the PMMA denture base, so as not to cause damage to it.

In summary, PMMA denture base is a resin material widely used in dental restoration, with good processing properties, stability and aesthetics. However, it is also necessary to pay attention to the limitations of its strength and wear resistance during use, and carry out appropriate maintenance and maintenance.